MoFi SourcePoint 10 Review
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- เผยแพร่เมื่อ 16 พ.ย. 2024
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There is no perfect speaker. However, within the realm of imperfect speakers the MoFi SourcePoint 10 is clearly an excellent design, especially for the price point. This was an honest and insightful review!
If you read forums all you need is a $150 speaker that measures flat and youve made it.
@@Audfile 😁
@@Audfile
Smooth, not flat.
I heard them in a store for 45 minutes. I was really underwhelmed. They sound like a big studio speaker, they really lack soul. I think there are much better options in the budget categories under 2000 EUR/USD.
Not mine. Had em for 3 weeks now. Broken in and dialed in. Well treated 12x14 room. Made a few tweaks to my curve…. and they quickly became my favorite speaker. PLENTY OF SOUL. Midbass slam is awesome, highs are beautiful, vocals are lovely, and the sound stage & 3-dimensional imaging are tons of fun. To me it’s an exciting speaker. I’ve always wanted a soft-dome bookshelf that gives me the low end of my Dynaudio Contour 20’s plus the vibrant mids & highs of my fantastic Heco Celan Revolution 3’s, and the SP10’s provide that and then some.
The man is back and he's on fire! Great job Erin. Thank you 😊
Fantastic delivery. I remember at the start being scared of this channel because of all these graphs. No more. Can’t wait for the source point 8, more accessible to my living space.
Man, that's awesome news. Thanks for letting me know that.
Erin, you're the Goat of the YT audio community!
Maybe not goat... but hopefully at least an anteater.
Nah Goat for sure.
Your diffraction comments are spot on. I have designed a few of these coaxial woofers with this size of tweeter. And I can tell you that the bump is there because of the angle of the first horn throat. The closer you are to parallel walls the greater the cancellation potential. There are a number of ways to get the most juice out of the lemon. But there is always a tradeoff in a coaxial design. Nice review.
Mark
i checked out your website, you used to do work for funk? (at least until he stopped paying his bills?). do anything for harbottle too? are those the same company?
@@commanderrussels2612 funk didn’t pay his bills? More info since I am thinking of buying a funk sub
@@commanderrussels2612 Harbottle is the maiden name of the wife of a friend of Nathan's. I have never done work for them. And do not intend to either.
@@Ctripp2448 He liked having the consulting, the website, the running of two RMAF shows. Measuring, further design consulting. Process consulting for manufacturing. But paying, not so much. It was a learning experience for me as well. I had great clients up until then. The kind that a handshake was a contract. Now, I take a retainer.
Erin, excellent review. Everything you say is to the point and no blabla like most reviews on TH-cam. Respect.
glad to have you back Erin.
Thanks. 🙂
The Andrew Jones pictorial segment was killer funny! He’s certainly become angelic indeed. He’s no doubt my audio god responsible for the joy I get every time I play my KEF Ref 1 Meta. Nice to see you back in the saddle so quickly Erin. Enjoy the moments, I know we do. 👍
Nice to hear the soundstage opened up and didnt lose any precision after you spread the speakers out
The off axis placement is a real thing. I have a few HSU CCB-8’s and they require the same attention to detail with aiming. Makes a big difference! Can’t wait to get a pair of these MoFi’s someday!
I was about to order a pair of the HSU speakers, but they do not have any in stock. Looks like it’ll be July before they get any back.
@@ErinsAudioCorner I'd love to see a review of the HSU speakers.
@@ErinsAudioCorner Yes, please review the CCB-8s when you get a chance. I've had my eyes on them for awhile, mainly because they appear to be a great choice for identical LCR speakers under my projection screen.
Nice, quick summary up front.
Good testing and subjective and objective analysis.
Erin it’s so great to have you back! Your reviews are so insightful. I have always been a fan of compression drivers (JBL fan) bit picked up a pair of Kef concentric speakers and I’m really liking them. I have them just off axis and their soundstage is so impressive. So much so I’m just using a pair of them in a phantom center channel configuration. Keep it up! The community missed you for sure.
Was looking for data on these! Good timing. Out of my price range but still love to see how new speakers perform.
Thanks for the review Erin. I have three HSU CCB-8’s across the front in our Games Room 7.2.4 Atmos setup, and when I set them up (as they are coaxial speakers as well) there was a bit of tweaking to get them just right. The results from REW, and listening, indicate I got them just right for the room. Of course having dual subs helps out on the bottom end. I hope you get some HSU CCB-8’s to test soon. I think they are a huge bargain for what they deliver.
I was going to order a pair this morning to review but they're out of stock until July. If anyone seeing this happens to have a pair they're willing to loan for review please let me know via email at hardisj at gmail dot com.
The AJ hymn at 3:11 had me laughing my bum off, lol.
Thanks for the great review!
Now we wait for the first DIYer to put the drivers into a bigger enclosure with deeper bass...
This is what I like about this channel. It explains the science behind the sound and the principles of speaker design and how they influence the sound. Too many reviewers ignore all that and focus on subjective experiences only.
You're correct, you shouldn't point these type's of speakers directly to your ears.
One of my designs uses an 8" dual concentric driver and I optimzed the frequency response to be linear under a 15 degree axis. This solves most of the issues and the result is a very coherent sounding loudspeaker.
Your honest efforts are so appreciated!
The gangsters paradise jumpscare lol
Glad the song wasn’t overlooked.
At first I thought it was the intro to “This Corrosion”, by The Sisters of Mercy..
I watched 3 different reviews of this speaker and yours was BY FAR the most concise and believable. I trust your opinion, thank you!
Probably the best review of this speaker and some of the other speakers on You Tube. Thank-you Erin.
To combat the beaming at higher frequencies, for many of their speakers, DALI have married a dome with ribbon tweeter, the latter taking over at around 10k (if I'm not mistaken) in horizontal plane. For this reason DALI say one really shouldn't toe in their speakers as off-axis it's most linear. Seems like a clever idea, even if it seems counter-intuitive initially. Would be interesting for you to test one... Thanks for a great channel, just subscribed.
Good to see you back in the saddle again, And please keep doing things that gives you meaning, joy and vitality. BMX, cycling and exercise are good!
Awesome speaker review glad to see your videos again Erin
In the late 1940s--early 1950s Harry Olson at RCA designed the LC1, a coaxial using a direct radiating cone tweeter at the center of the 15" cone. He addressed directivity and response problems with a diffusor over the tweeter and "speed bumps" on the cone. The LC1 was used as a playback and monitor speaker in RCA recording studios, there are photos of Fritz Reiner and Elvis listening to playback over them. I heard LC1s a couple of months ago and they were excellent.
It would be really cool to get some speakers like that (and older, "legendary" ones) to review. The issue aside from obtaining them is trusting that the mechanical parts haven't worn down after decades of either just sitting on a shelf or being used constantly.
Tom Brennan: all so very true. I grew up listening to these speakers.
If interested I would love to discuss RCA labs.
Erin: I may be able to get a raw pair, nearly identical model #’, 1 a
LC1A, the other a close relative. 😊
@@ErinsAudioCorner Well, Great Plains Audio makes new Altec 604s in both Alnico and ferrite magnet versions. When Telex sold off Altec the last Altec head engineer bought all the tooling and now makes Altec compression drivers, woofers and coaxes under the name Great Plains Audio. The company also rebuilds old Altec drivers, even to the point of making the phenolic spiders and paper surrounds for 1940s "Hollywood" 515 woofers and 604B coaxes. And they supply new compression driver diaphragms and remagnetizing too.
I had a pair for a while and was quite disappointed with them after hearing so much praise for them. I’d have to try to dig up the measurements I made, but I recall that the tweeter was operated down to approximately its resonant frequency with a first order high pass filter and didn’t look very good in the time domain. With no lowpass filter on the woofer either, the balance was OK (frequency response was pretty good), but upper mids and highs were somewhat rough and lacking in refinement. I would guess that unfiltered woofer cone breakup also contributed to that.
Great review! It's amazing how much information you convey without getting bogged down in technospeak. As to the speaker itself - I think modifying the tweeter waveguide could overcome the HF problems without adding cost. A larger VC diameter for the LF unit would allow more space to do this effectively.
Much appreciated!
Man you're on fire!
How many reviews are you doing?!
Great honest review. I always learn a lot about how measurements work with your explanations ✌🏼
I'd love to hear a pair of these. My favorite system runs a pair of diysoundgroup Vortex15 in slot ported 6 cubic feet cabs, tuned to 35hz. I like them 15 degrees off axis, and the soundstage is massive with great imaging, and they are tonally fantastic. I am hooked on them. I fell in love with Urei 604 monitors in one of the studios that I was tracking in, then started using dsp Turbosound coax 12's for my live vocal monitors and that made me take a chance on the 15 coax design, and wow, am I ever thankful that I did. Just great to get lost in music with. Glad that you are back and rockin', Erin!
Thanks for the great review, Erin! Glad to see more of you again. Would you recommend these over the Wharfedale Lintons?
Great stuff Erin, I’m not in the market for new speakers at all but I love the info and style of your reviews. Keep it up!
Instead of turning the speakers 10 - 15 degrees off-axis, wouldn’t sitting slightly above or below the tweeter accomplish the same?
Effectively, yes. Or a combo of the two.
Like Erin said, you can do either to get 10-25 degrees.
Also, a common technique with controlled directivity speakers such as these is to toe them in. Let’s say you want to cover a wide area, like a couch that seats 3. Instead of pointing both speakers on axis to the central seat, you toe them in so the “beams” cross in front of the main position (imagine 2 laser beamed crossing).
The center seat is now off axis to both speakers, but the image is in the middle because they still centered in front of the center.
The right seat is naturally closer to the right speaker. Typically this would be louder because you’re closer, collapsing the image to the right side. But now you’re even more off axis to the right speaker because it’s pointing more to the left seat, and you’re more on-axis to the left speaker. So the left speaker gets a little bit louder to compensate for your increased distance from it, and the right speaker gets a little quieter because you are more off axis so the SPL isn’t quite as high.
This widens the sweet spot to cover a larger area with more constant volume level at each position, with the image staying anchored in the middle.
@@armandosinger Thanks for the detailed response, Armando! I'm interested in using controlled directivity speakers for my LCR under my 115" projection screen. With such a wide center stage possible with just left and right speakers it seems that a center channel speaker may not be necessary depending on far away from the center of the screen one is sitting. I need my left and right speakers to sit about 11 feet apart, so I'm not sure I could get away with not having a center speaker if a viewer is sitting too far to the left or right from the center of the screen. If I decided to go with a center, I'm guessing the best thing to do would be angling it slightly above or below ear-level when seated. Left and right speakers could be angled in as Erin described or pointed directly at the center seat making sure to angle slightly above or below ear-level. I don't have MoFi money, but would most likely go with three of the Hsu CCB-8s. I've heard great things about these.
Very helpful review, you're one of the best!
Not tryin' to be some kinda ass kiss but this is why Erin is one of the best reviewer's, he really breaks it down and gives it to ya from all angles and listening situations. That little Gangsta Paradise clip with the almighty Andrew Jones pic was hilarious 🤣. I did get a chance to listen to this Mofi's briefly at the Florida show. The room was small, the speakers were up close but I gotta admit I really liked them. Andrew must have had them set up pretty good cause I felt that bass was going lower than 40-50hz in that little room. I didn't think he any subs running but I can't be sure.
I'll take it! lol
back with the most requested!
Thanks for the review, Erin. Would be useful if you could mention what drivers are used in the speakers you review, if identifiable. Also if you could show the electric and acoustic transfer functions respectively of the crossover network.
These are custom drivers.
Coincident driver with passive time alignment: Thiel Audio CS3.7.
Prove it: check Stereophile measurements.
Sweet!
I assume the only difference between the 10" and the 8" is the base response?
I live in a small townhouse where i have to place to my speakers up against the front wall. You mention that …. Placement near a wall can increase the base but the “wall bounce” will create a “suck out” in the mid-range area of 200 to 500 hertz. That is the “trade-off” between sacrificing a little midrange quality to get some extra base.
What features can look for in a speaker that will perform its best when placed against the front wall?
Thanks
Learned something about the issues some of coaxial speaker designs. Are KEF coaxial speakers behave similarly?
LOL.... Gangster's Parricide insert made me choke on my cereal .. lol ...hahahah... Oh my lord.
Excellent review! Thanks!
Hey Erin! Great content, as always. Question - I got a pair of these used for an absolute steal (around $1,500 with stands). I agree with your assessment that the high-end is a bit pronounced/forward for me. I was thinking of addressing this by 1) using in-app EQ on my WIIM to knock everything above 4k down by 2-3 decibels and 2) potentially pairing with a better amp that may bring out a warmer sound, potentially an ArcamSA20. Does this seem like a reasonable approach to you?
I’d use the EQ. I wouldn’t bother trying to match an amp. You’ll be chasing your tail.
@@ErinsAudioCorner amazing, thanks Erin!
I own and love the "KSD C8 reference". An active DSP corrected coaxial setup with FIR filter. I would love to see proper measurements as the subjective radiation pattern blows my mind. Never heard better in close to mid range. I have them cut at 200hz to minimize the Doppler effect. The bass is played by bigger drivers.
Erin ... "𝘫𝘶𝘴𝘵 𝘸𝘩𝘦𝘯 𝘐 𝘵𝘩𝘰𝘶𝘨𝘩𝘵 𝘐 𝘸𝘢𝘴 𝘰𝘶𝘵, 𝙮𝙤𝙪 𝙥𝙪𝙡𝙡 𝙢𝙚 𝙗𝙖𝙘𝙠 𝙞𝙣".
After a brief hiatus, back, Erin's back ... and stronger than ever!
Coming out swinging ...
MoFi's SourcePoint 10, hell yes!
Erin, your Kung-fu is good ... my fellow BMX brethren.
Obviously, there's a huge connection between BMX and audio ... said 𝙣𝙤 𝙤𝙣𝙚 𝙚𝙫𝙚𝙧!
It's been said, but it's worth repeating;
Brother, it doesn't matter what your content is, we're here for you.
It was so nice seeing your new material in my suggested feed.
All the best
Solid content ...
Much appreciated
BMX 4 LYFE!!!! 💪💪💪
So Erin, with your expertise on drivers, would you consider a good MTM driver configuration better than a good coaxial driver configuration ?
Great video as always. On your point of a tweeter and woofer not being time aligned in a coincident design, how far would the tweeter need to be offset from the woofer? And would that offset be physically possible?
Both voice coils would need to be physically aligned, which will push the tweeter quite a ways back into the motor structure of the woofer, and that will be different from woofer to woofer. Then making that work with a tweeter, especially a soft dome, pushed back 1-2" into the woofer is going to cause a lot more reflection issues than it solves. (Take a toilet paper roll core, cut it to 2" long, and put it around a tweeter measure the response)
Even compression drivers used in a coax configuration aren't aligned as they are often positioned 2-3 inches behind the voice coil of the woofer.
Hi Erin, thank you for another review. What do you think about extreme toe-in as dr. Geddes advocate for narrow DI (especially for his Gedlee) speakers? So the axes of tweeters meets before the listener.
Great review as always
You asked us to name a passive coaxial speaker that is time aligned. The Urei 809 and 813 systems were just that. In spite of a fairly large physical offset of the voice coils, the passive crossover time aligned them, and the speaker could pass a square wave remarkably well. I haven’t studied the crossover, but I would guess than an all pass network was used to delay the woofer.
Likely was the case.
Darko's interview with Andrew posted a couple weeks ago discusses the IMD phenomena and his thoughts about it with these Sourcepoint drivers
I saw that was posted but I avoided watching it because I knew I was getting these speakers in and didn't want to be influenced by anything discussed there. But I'll need to find some time to watch that. Thanks for letting me know!
thanks for an excellent review ... would you make room for these in your home?
They’d be on my list. But there are a lot of others on that list. So many speakers. Too few square feet. 😂
Wow, just found out about your life tsunami buddy after I checked this review out. You're not alone Erin. I went through this exact thing two decades ago but the basis is still the same - selfishness. I me my. The X didn't even try counseling or anything. Just SURPRISE! Our current society paves a red carpet for this behavior as I see it. This may seem impossible for you now but you, me, all parents do not suffer as much as kids. Keep your head Erin and keep your priorities clear as this road does not stop here. And keep clear in the future. Do not let yourself be ethically compromised, stick to what your heart says - your kids will be watching with binoculars.
Wow, yourself. Thank you for the inspirational words. 💪
Great video Erin. Please keep doing what you’re doing-you are helping to educate more than entertain and I for one appreciate your efforts!
Quick question: would Andrew Jone’s coaxial design on his Elac Unifi UB5 require the same off axis aiming?
1:45 Erin Headroom😂😅❤❤
Erin, it's great to see you back. You mentioned intermodulation distortion, that is usually attributable to amplitude non-linearity, not the case here, I believe it's Doppler distortion that produces a similar effect. Regarding the harmonic distortion plots, they appear to be about 10dB higher than you'd expect from a speaker in this class? Please compare it with the Elac Debut 2.0 6.2.
In regards to harmonic distortion, I attribute that to its intended low linear excursion. Which is why I’m not surprised by it.
So you agree the distortion is higher than a non-coaxial speaker, like the Debut? The Kef Uni-Q designs do not appear to suffer from the same effect.
@@trevorbartram5473 looking at these on my phone, it looks like distortion is better above 100Hz but worse below that on the MoFi.
What a great channrl. Someone who knows what he is talking about. Subbed. Congrats
always GREAT information!
could a Schitt Lokius equalizer fix the brightness?
Have you tested the most famous coax, the Altec 604? (Still made today by Great Plains Audio). The 604 was used in Urei monitors with a supposedly time aligned passive crossover by Ed Long. Long copyrighted the term time aligned. Jeff Markwart designed DIY passive crossovers for various versions of the 604 which are supposedly "phase corrected". These crossovers are popular with 604 fans though I expect more for their voicing than any phase correction.
I’ve heard a few of their different speakers, but back then I didn’t know which models were, which. So I can’t really say if I’ve heard them or not.
Andrew jones made some pretty nice speakers for pioneer that actually had a real nice crossover designed or most pioneer speakers didn't even have a crossover he also makes great value for the money his Speakers what made me enjoy music the most
The distortion seems much better than the klipsch nines, but you don’t seem very happy with the results? Which speaker has way less distortion? Thank for all your hard work Erin!
I hear you. I tend to focus on the things I think are important relative to the thing being reviewed. Which means I may gloss over some aspects that aren’t necessarily noteworthy one way or another. I used to try to highlight everything, but the reviews were extremely long and I didn’t feel it added much to the overall impression.
thank you
Thanks for putting up this review. Great to see an honest review of this speaker rather than all the gushing sales reviews out there. So 3 dB lift in the bass, 3 dB lift in the treble, it's a speaker designed to have a smile response so it will demo well in a store. This type of response is fun but it looks pretty easy to flatten it out. I'm not a fan of ported bass, but passive speakers tend to go that way rather than adding a second woofer to save money.
No 3dB lift in bass. The bass is linear with a typical rolloff so nothing noteworthy there. If you want an example of a smile response look at the frequency response of this speaker: www.erinsaudiocorner.com/loudspeakers/jamo_s803/
Actually, more like a "Batman" response. 😅
Interesting for sure as other reviews talked about how “good” the bass was which I called BS on. I have yet to hear a speaker I can afford that is not self powered that does not need subs.
My speakers are huge and expensive and I still use subs. Just saying.
Wonder what will happened, when someone sends these to Danny at GR-research for a upgrade on that chessie crossover.
@@rikardekvall3433 Is it reliably demonstrable that more expensive crossover parts make for a different sounding speaker? Never mind better, just different?
@@tombrennan6312 Well yes, from my side. Many others have the same experience but I can’t judge their speakers, because I haven’t heard them. I have a pair of Dali Zensor 1 desktop speakers that sounds great in a small room. Bought new speakers and then did an experiment on my Dalis. Changed on One of the speakers, both capacitors, one tweeter and one bass. Letting them play in the garage for 2 days, then I placed them at their old place and the sound was different and better. More clarity in the upper mid and tweeter, not fatiguing. The bass got tighter and more clarity, then the other, not upgraded speaker. I turned my head many times so both ears would hear the change. Used my over ear headphones as a double check. I believe that a capacitor upgrade does do a lot. Like using a speaker grill of denim jeans and after upgrade it was like the grill was gone. Try to change the capacitor to the same value but with a HIFI graded brand. You will be surprised.
Dual concentric drives are much like horns in placement. My Tannoy's need no toe in, zero, none. Hans Beekhuyzen taught me a lot about this.
Which model? My guess is they do benefit from it but you just don't notice it for one reason or another.
Hmm I still like the KEF R3 better. The directivity is not as perfect but it shows way less resonances. The frequency response is much smoother.
And kef r3 meta is better than r3 and only cost 3/4 sourcepoint 10 :D
So you’d still recommend a sub with the Sourcepoint 10? If so, why not get smaller (more affordable) single driver bookshelf speakers like the the Closer Acoustics OGY and use a sub? Jay’s Iyagi just reviewed the OGY. I have them in my living room since 2022.
I would. Can't say anything about the ones you mentioned as I don't have any direct experience with them.
Be aware of fullrange drivers to became overdriven with higher SPL and also start beaming at much lower frequency. They are very specific to say atleast.
@@pulDag People shrug off full range drivers with that argument and it’s silly. Every design has a compromise. Crossovers have a very noticeable effect on the sound. With full range drivers like the OGY you can stick to a medium or small room and be fine.
@@user-xg6zz8qs3q yeah, definitely. I just named differences between these two speakers .
Understood you perfectly. No shill going on here!
Thanks for the great review. I’ve been thinking about trying a single SourcePoint 10 as a center channel since I first read about its design. How do you think it would do as a center?
Actually, that’s a good idea. Though, there may be other options. Heck, you may even want to wait to see how the new 8 inch version of the speaker performs. If you’re using it in a home theater, you will be using subwoofers and the 8 inch won’t impact you that much. No pun intended.
Thanks!
How far behind was the Kef reference mid woofer behind the tweeter in m milliseconds ?
Andrew Jones choir lol!
HEY EVERYONE!!!!! This speaker is meant to be off axis! Ha! For real, this is a great review! Thank you sir!
So why this and not just the KEF LS50 Meta or Wireless?
If you set in a triangle aprox. Isnt you as a listener getting them more on axis if you turn them against yourself, if they point straight out in the room my ears are not on axis with the tweeter, far from, hope you know what I mean, But You should toe them in against your listening postion so its about 10-15 degrees of axis from one´s ears i suppose ?
Love the AJ intro sound. Heard the 8 at Axpona in a very well damped setting. Sounded excellent. Try to get that one please. May be better than the 10.
Well done Erin - straight up objective, nice! When is Andrew gonna get himself a NFS 🙂
Good stuff. Thanks for the info. 🤙
I was not aware of the LF limitations Concentric speakers present. This makes so much sense though as the old school Altec Duplex drivers face the same limitations.Can these mo-fi's be stuffed & plugged btw?
Well, "can they" is "yes"... but I think you mean "should you". In which case, I'm not sure there's any real benefit to doing that.
@@ErinsAudioCorner Aside from sound preferences, Wouldnt sealing at least help with wall distance limitations
Correct me if I'm wrong.
It's already phase aligned to get proper summation. Just the low frequency driver itself just don't have the high frequency content in signal that rise the impulse response that fast. The initial rise in the impulse response it the point to align, not the peak position.
The two peaks would be perfectly aligned in step response. In my Kef LS50 Wireless II review I provided the step response with the "Phase Correction" set to both off and on. You can see the difference this makes. Link: www.erinsaudiocorner.com/loudspeakers/kef_wireless_ii/
@@ErinsAudioCorner That'll need FIR filter to correct the phase shift caused by the corssover. Still there's nothing wrong with the "time" of both units.
You can see the impulse response shift by the crossover simply using REW to create a 0-1600Hz LPF (woofer) by EQ tab, generate EQ response and sum it with 1600 - infinity Hz HPF (tweeter). The summed FR would be perfectly flat yet the impulse response would like the one you see on the passive crossover speaker, though there's no any time delay applied to both responses.
@@youtube改名也太難了吧 I didn't say there was an issue with the time other than the fact they are not *technically* time aligned.
@@ErinsAudioCorner I guess I'm confused with the term time aligned.
@@youtube改名也太難了吧 It is better to say distance aligned. And as you say that does not in itself guarantee perfect transient response as the driver roll off and the crossover need to be considered also.
"Linear" is a poor term to use when referring to a flat frequency response. A frequency response of a very linear speaker or a linear system can be far from flat. The over use of the term linear will just cause confusion. A speaker with a non-linear response will produce harmonics when it plays a sinewave. A linear speaker will produce a single sinewave when it is reproducing a sinewave. The amplitude may be different, but that is not due to a non-linearity. A linear speaker has low harmonic distortion. A flat speaker has a flat frequency response. I have noticed other TH-cam content producers starting to misuse this term as well and it will cause confusion.
In the context, I’m using it, it’s born from the term “linear distortion“ which is a deviation from flat frequency response.
Not to be confused with “non-linear, distortion” which is distortion that varies with Output (HD, IMD, etc).
Very true. Plus the added confusion from a linear FUNCTION being described via ax+b, but for a linear system an input vs output plot at a certain frequency will have b equal to zero.
Thanks as always.
Wonder how these compare to the Kalis?
Nice review and good explanation of what you were seeing and hearing!
Wow that's a great spaker.
awesome review
Can someone explain what compression is? Thanks.
Nice review, could you please do review on Mission 770 too
I'd like to... I'll try.
Noob question. When you say off axis are you referring to toe in?
Or toe-out. Anytime the speaker is not facing directly at you it is “off axis”.
So about 8 or 9 feet apart firing straight?
Stoked to see you back on the reviews in rapid fire!!
What if it was on-axis with external EQ?
I tried that, too. Ultimately, 10-15 degrees off-axis with a little bit of treble adjustment seemed to be what I liked the most (in my listening tests).
I heard that this speaker is best listened to off axis. 😁
That’s what I heard, too. Not so sure. 😂😂
How do they compare to the HSU Research CCB-8's? Those CCB-8'S are incredible! Everything about them. Everyone's making a big deal that it's a source point speaker like it's never been done before. HSU did this years ago.
No idea.
I am curious as well. I have a few of the HSU’s and I have embarrassed myself spending more on other speakers that simply don’t deliver the same “wow” levels of subjective performance. Curious how they measure objectively.
My only complain is in home theater use, the center channel (just another Ccb-8) isn’t the most aesthetically pleasing thing to look at.
@@PumpUptheJam81 I have the HC-1 MK2 center and it matches wonderfully with the CCB-8's.
@@mikedelara8226 Good to know! I may have to check it out, especially with the current sale.
MoFi Engineering should have asked the Marketing Dept.--- Now What Exactly Is The Market We're TARGETING???
When you say "off axis", do you mean towed in or towed out?
How to Aim Your Speakers
th-cam.com/video/C-2Uy2Gk7Dg/w-d-xo.html
When I model/simulate speakers I always wind up with some on-axis treble rise on purpose because I anticipate never listening to them on-axis. This can always be adjusted later with some DSP/EQ so I really don't care how "flat" a speaker is through most of the range. The obsession with "flatness" is blown way out of proportion by all modern reviewers as many listeners don't even like "flat." A low distortion speaker with broad bandwidth, good dynamic headroom, low distortion, that behaves like a point source at the intended listening range, can be far from flat and sound fantastic. Some listeners may need some EQ but that's not a show stopper for most these days. A speaker that fails on any of those other characteristics can't be fixed with EQ and will sound poor regardless.
Flatness is the least important attribute of a speaker in the modern world, despite it being put on a pedestal by so many reviewers.
I am disappointed that this design was done as a 2-way. The "waveguide" created by the concentric configuration should NOT be a cone with any significant movement. A 3-way with a smaller mid-range driver, crossed up around 200-300hz from a more robust woofer that could have been tuned deeper would have made this a more useful broadband speaker that could go subless.
But, what about on-axis though? 😂 Kidding!
The resonances in the midrange, whats the cause?
Not sure. I'm not seeing any resonances in the impedance anywhere so I assume it's some sort of issue external of the driver and/or enclosure. But I don't know.
@@ErinsAudioCorner my man! Only smart dudes have the confidence to say, I don't know. I appreciate that!
Lightweight fibre cone in their “controlled” breakup is my Scientific Wild Arse Guess.
Almost all larger / higher sensitivity PA drivers exhibit this. More well damped cones with smoother responses eg. Typical late 1990s hi-fi are like this, with smoother responses. But the heavier cone come at the expense of lower sensitivity…
Good info, thx!
Why not a metal dome? Wouldn't that help a little with the top end beaming?
Why would it? Its the diameter thats mostly relevant to when the beaming starts. Larger gives more beaming..
@@impuls60 The diameter alone can't be the whole story. Check out the datasheet of a few comparable drivers (soft and metal domes in the same diameter and faceplate, same manufacturer for measurement consistency), and you'll see the soft domes tend to start beaming at far lower frequencies. The SEAS catalogue is a good place to see this.
I suspect it's about metal domes maintaining pistonic behaviour up to the break up point, while soft domes gradually decouple from the voice coil at farily low frequencies gradually turning then into ring radiators.
Regardless, it's about managing a set if trade offs.
It's not necessarily a drive unit excels at this or that, what's vital is the sum of the compromises being optimal.
Always pleasant encountering the level of viewer comment contributions ...
Erin's Kung-fu is strong.
Of course speaker design is a question of balancing compromise. Whenever I hear "no compromise" I think oh, you'll get it, you just don't get to decide how.
My thought on the tweeter was just that it might have benefitted from one with wider dispersion in the top octave, slightly less of an on axis lift, and listening a little closer to the axis. That's all.
@@thomaslutro5560
Good points.
Since the drive units are purpose built, perhaps the HF dome size is for additional level capability or directivity elsewhere up and down the region.