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Lancaster Hi-Fi
United States
เข้าร่วมเมื่อ 7 เม.ย. 2022
Welcome to Lancaster Hi-Fi: Vintage audio gear and plenty of music! Most of my videos are about repair, restoration, and modification of audio gear and generally include music sound clips, but I've got a few videos focussed solely on the music. I work mainly on amplifiers, receivers, preamplifiers, turntables, and speakers. I've built several resto/mod tube amps and have more in the works, but I love my solid state gear as well.
Another Beautiful Phase Linear Preamp! The 4000
I bought the Phase Linear 4000 one year ago, restored it to good working condition, used it for a few months, and sold it in spring 2024. In this video, I show what I did and how this preamp works.
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Vintage Preamp Restoration: Phase Linear 2000
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The Phase Linear 2000 is a thing of beauty! This preamplifier was not designed by Bob Carver, and it's simple in comparison to the model 4000 (but that will be the subject of another video). I do a basic restoration that includes replacing out-of-spec electrolytic capacitors, reflowing stressed solder joints, treating switches and potentiometers, polishing the shiny face and knobs, and restorin...
Best Gear Haul Ever?
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Dahlquist DQ-10! Phase Linear 200 and 2000! Kenwood KD-2055! (The Rock!)
Is the Sansui 881 the Biggest Bargain in Vintage Hi-Fi?
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Looking for a vintage, top-of-the-line Marantz, Pioneer, or Sansui receiver? The Sansui 881 might be your best buy. At 63 watts per channel, it has plenty of power for most users, and it has the looks and sound quality you expect from Sansui.
Should You Upgrade Your Cables?
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I tested cables, or RCA interconnects, ranging in price from free to over $1000 in my system. After that, I upgraded all of the RCA interconnects in my system. What did I upgrade to and why?
Why Shouldn't You Buy a Vintage Turntable? What Could Go Wrong?
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Bearings get worn, good belts are hard to find, and other problems with vintage turntables.
Vintage Receiver Repair: Sansui 881
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Diagnosis and repair of a vintage Sansui receiver with no sound. BTW, the op-amps referred to in the video aren't actually op-amps, but whatever!
Tone Control Mods on a Vintage, Tube-Era Sansui Receiver
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I'm using LTSpice circuit modeling software to modify the existing tone controls, remove the high and low filters, and design a bypass of the tone controls.
Problem Solved! Vintage Receiver Malfunction Fixed!
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A Yamaha CR-620 looked fine without a load connected to the speaker terminals, but with a load, half of the waveform was missing! A bad resistor between the "pull-side" driver emitter and output base was the problem. Heat damage and increased the resistor's value by more than two orders of magnitude. With no load, almost no current passed through the resistor, so voltages were normal. With a lo...
Wait! That's a Thing? Vintage Receiver Malfunction
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Wait! That's a Thing? Vintage Receiver Malfunction
Do Cables Matter? How Much Should You Spend?
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Do Cables Matter? How Much Should You Spend?
Do Cables Matter? Testing! Differences Detected!
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Do Cables Matter? Testing! Differences Detected!
Preamp Mod For Moving Coil Cartridge!
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Preamp Mod For Moving Coil Cartridge!
Preamps: Why Are the Best So Expensive?
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Preamps: Why Are the Best So Expensive?
The Best Affordable Tube Amps: Consoles
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The Best Affordable Tube Amps: Consoles
Tube Amps: Single-Ended vs. Push-Pull and Buying Advice
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Tube Amps: Single-Ended vs. Push-Pull and Buying Advice
Should You Buy Sensitive Speakers? Uh ... Whut?
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Should You Buy Sensitive Speakers? Uh ... Whut?
Should You Buy Vintage Speakers? Yes!
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Should You Buy Vintage Speakers? Yes!
What's the Deal With Separates? Vintage or Otherwise?
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What's the Deal With Separates? Vintage or Otherwise?
Should You Buy a Vintage Receiver? Or Any Receiver?
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Should You Buy a Vintage Receiver? Or Any Receiver?
I Must Build an SET Tube Amp With Type 45 Triodes! Why?
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I Must Build an SET Tube Amp With Type 45 Triodes! Why?
Should You Buy a Vintage Cassette Deck? Or Any Cassette Deck?
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Should You Buy a Vintage Cassette Deck? Or Any Cassette Deck?
Can a Restored Vintage Tube Amp Beat a New DIY Amp? PACO SA-40 vs. Beaver Valley
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Can a Restored Vintage Tube Amp Beat a New DIY Amp? PACO SA-40 vs. Beaver Valley
Should You Buy a Vintage Turntable? Or Any Turntable?
มุมมอง 31K9 หลายเดือนก่อน
Should You Buy a Vintage Turntable? Or Any Turntable?
Should you buy a vintage light bulb or a new one?
Even through my phone's speaker the Yamaha sounded more flat and compressed than the pioneer which sounded fuller with actual separation of instruments in the music.
Semi-autos, with a cuing lever, are a bit more simple and relieve the clumsiness you spoke of. And I am partial to Technics because they last and last and last while sounding great doing it.
Thanks for taking the time to go through all the features of this preamp. Wow, this gives me renewed respect for Bob Carver. It's too bad some of these features never caught on, nor got developed into something more user friendly. Carver would put a merketing spin on his ideas, which to me presented as gimmicks. The dynamic range expander was marketed very well by DBX (assuming they are the same or similar), especially in pro audio, but I never knew Carver had something similar. That's a shame.
I guess I don't have to yell FREEBIRD! Lol Nice. I could see this in a huge rec-room jamming out on a warm summer's day back then. What a trip back in time. Thanks.
I can't believe this is even a topic? A CD player is the highest quality sound you can have.
I dont need to buy 'vintage' speakers as I bought them new in 1980. Yes, I have the amazing Spendor BC1's.
During the pandemic someone moving put out a pair of Cerwin Vega RE-38s. Big 90 lb behemoths. They were rough but I knew they'd be repairable. Even though I’m pretty terrible at that sort of thing, I took them & refurbished them over a few months. Cleaned up very nicely. Had to buy new speaker foam, a new dust cap, a new crossover just for the fuse drawer. Now they're the cornerstone of my stereo. Best sounding set of speakers I've ever heard. Edit : Reforming is pretty easy. The first one I did was _ever so slightly_ off-center. I thought I botched it. Simply Speakers told me it was probably fine but they could redo them for $160. I tried it figuring I had a fallback option. They sounded amazing. They were right. The slight imperfection didn't matter at all.
The Singing Cops - Zenyatta Mondatta!
Interesting tour of the Autocorrelation function. Did you do nothing more than repair the connectors and touch up the solder joints, and service the controls? No recapping?
I didn't replace any caps that I recall. It had been worked on, and I think it was actually modified, so I think a lot of the caps were replaced then. I had a mental "to do" list for that preamp, but I sold it before I got to anything on the list.
@ 🙂
I think the video achieved your goal of a general, and cautious, restoration of a typical (and relatively simple) piece of vintage ‘kit’ as the Brits say.
Thanks! The combination of interior simplicity and exterior beauty makes a relatively coherent video possible. As opposed to the untold hours of footage I've taken of my work on a Sansui 1000!
I know exactly what you mean! I have two vintage cassette decks sitting here right now that can only record from 20Hz to 20kHz within 1dB using Dolby C with a crappy TDK FE Type I tape, and Dolby HX Pro only gives them enough additional headroom to reach a signal-to-noise ratio approaching 80dB. They both have diabolical wow and flutter figures of 0.045% WRMS too. I haven't had a cassette deck chew up a single tape in the past 47 years, but I'll be fully expecting all of my tapes to self-destruct now that you say they will. How did I ever allow myself to get conned this badly?!
Pretty sure they also made speakers as well. Thanks for bring back so many wonderful memories from some 50 years ago.
He "appeared" to be pretty competent? Oh my goodness gracious, did you learn differently. I'm speechless. Good that it's now yours and will get the proper attention. She's a beauty and deserves better.
Hi there, I recall demoing quite a bit of Phase Linear equipment as a HiFi salesman for customers. My opinions of PL was always that their equipment sounded unique. It had good sound no doubt about that, but Bob Carver had a talent for coming up with idea's outside of the mainstream, and marketing them as some sort of audio bliss magic dust. Thanks for the video.
If you compair the spect to the Phase Linear 2000, the 2000 has better Signal to noice ratio and less distortion. In my mind noice and distortion is the enemy when it comes to HiFi. I too had a 4000, I thought the thing had to much noice.
Did you see that I also posted a video about the 2000? I've been sitting on the footage for the 4000 for a year; I figured that as long as I was making a video about the 2000, I should finally edit the video for the 4000. The 4000 is a bit better looking, but I didn't really want all those features, and it seems like all that extra circuitry raises the noise floor and distortion level, like you said.
Nice find I saw it on Craigslist recently same model I don't know if that's the one you bought but it's a good one I went to an estate sale I hardly ever go to those ever anymore but it was a friend who passed away the basement was jam packed how about 600 tubes tube tester ham radio classic and a bunch of other cool crap for practically practically free very little money he had four deep cycle monster batteries 12 volts 1,750 cranking amps each I could have gone for five bucks a piece but I don't know what I would do with them and they were good I was just overwhelmed and it was pouring rain I had to get out of there I just I don't know what I would do I bought one deep cycle battery a smaller one it was a thousand cranking amps but the other four somebody needs some but not me have a great day I can't buy anything ever again I got too much junk but it's good junk the best deal I found in the last 5 years was a 2325 Marantz for $10 yep $10 and it works and it's nice I went through it replaced a few things that needed but it really is nice somebody was asleep at the switch at that sale thanks for the videos I'll keep watchingPlus I'm a geezer can't hardly walk I can lift stuff I just can't transport it
I bought the 4000 this time last year and sold it at the end of March this year to a guy in Eugene. I found the listing you're talking about. Looks like there are two for sale. They're asking a lot for "untested, doesn't seem to power up" and "untested. Power light comes on"!
Just the fact that somebody imagined all those parts and pieces, figured out what they should do, then how to make them, make a lot of them, then figured out what order to put them in to get the desired results....... I'm not saying it was space aliens, but it was probably space aliens.
🤣🤣🤣
My OCD is acting up since the cover did not get a light sanding to remove all the water stain.... Arghhh... 😅
Yeah, I know how it is, but they're not very noticeable, and I can always work on them later if I want.
who did you get the new output transformers from?
iwistao. Chinese company.
I like your work but in this video the music make it hard to watch, I had to keep this sequences.
Yeah, I found leaving it in kind of amusing, but I probably won't do that again.
Fast forward should be muted. Cut editing is probably better here.
I congratulate you on your work on this console. You proceeded in the same way as I did when I managed to find my Phase-Linear 2000 console, at the end of 2002. I have my 2000 console connected to a Quad 405-2 and it works fine. It has remained working in due condition to this day, being used practically every day for my regular listening. What I didn't know was that this console wasn't designed by Bob Carver. This is something strange to me. How did you find out about that fact? I did an exhaustive search on the web regarding the console and nowhere did I find this information. The operations to revitalize the Phase-Linear 2000 console are an investment in labor that is fully justified, because anyone who has a console like this will keep it for the rest of their life, making it a completely reliable machine. The only thing left to do on my console is to change the OPAMPS, this being a procedure recommended by the majority of people who have done it and who are allegedly satisfied with the result obtained. Apparently, this change of OPAMPS provides a more compatible operation with current musicality (this is not an observation of my own). This is an issue that I have not yet seen expressly explained. What do you think about that? Does it really justify changing the OPAMPS? Since my console is working fine, I'm hesitant to make the switch. Best wishes for continued good work. Greetings from Portugal. Macedo Pinto
I'm not sure where I saw the information about Carver, but my recollection is that the 2000 was designed to have a lower price than the 4000. Their superficial resemblance aside, the 2000 and 4000 are very different designs. Also, the 4000 has "designed by Bob Carver" printed on the back, and the 2000 has nothing similar printed on the back. Regarding the opamps, the conventional wisdom is that opamps have improved substantially since the 70's, and the 2000 would benefit from the newer technology, which would, for example, lower the noise floor. However, replacing the opamps is not simple and requires adapters at the least, and perhaps also additional capacitors to prevent oscillation.
@@Lancaster_Hi-Fi thanks for you assessments about what I mentioned. In fact, the change of OPAMPS must be accompanied by more interventions of which I am not aware. I will study this more in detail before deciding on this. Thanks for your quick response. Macedo Pinto
Maybe it's just me, but this super-fast playback of the video and the background music is making me hyperventilate. I had to mute it. Seriously.
Indeed, it really distracted what would otherwise have been a great video. Not good...
Garbage deck for me nowdays is any deck without any kind of bias adjustment, like the one you present. Such a deck is incapable of making a reasonably good recording on the vast majority of tapes, which happen to be normal bias.
Was there "Police" playing?
Yeah, Zenyata Mondata.
Painters tape on the power amp, What gives
That part of the face is barely attached and needs to be fixed. I'm just trying to keep it in place and prevent further damage until I fix it.
This IS about records, but I got a Teac X-3 r2r, maybe keep ur vinyl and put it on a 7 inch reel at 7.5 ips. Mr.Lancaster HiFi, great website u have here!
Pretty peachy ... indeed! Simple but elegant.
Yes, I'm digging it. I was expecting something like the 4000 (video on that next), which is stuffed full of boards.
Nice work - looks so much better now and likely performs better than new! I liked the neat trick of replacing the two pairs of electrolytics with a single pair of film caps!
Thanks! Once I realized the function of those caps, replacing each pair with a single film cap with half the value seemed the obvious thing to do. Still, I hesitated a little at "changing things."
I have the Yamaha R-S300. I really like it. That vintage Pioneer has the looks. But, the Yamaha has the performance and functionality that I like. I wish that Yamaha made a dock for the modern Apple Or Android devices. That hiss at maximum loud volumes is normal for many receivers that I tried regardless of brand.
Close to 69 yrs old and recently bought Rollin Stones early years an Zeplin's Stairway to heaven. I buy at thrift shops as well as Spinnakers over in Hyannis, Mass. Nice ppl their. I wash the albums 1st warm soapy distilled water. Got a carbon brush too. Good luck and have a gr8 time.
Funny as he'll "Every1 loves Raymond where Ray an Rob put their dad's box of albums by the furnace so they could set up a race car set...records warped from heat so yeah heat's no good for records!
I had a SounDesign w Tt over tuner an cheap-ass spkrs. Went to a friend's plc an saw big 3- ways an Eq R2R and A Big Marantz rcvr. When I got a System from Tek Hifi in 80 a Kenwood Kr6030 anToshiba SR-,A200Tt and Pioneer large3-ways...wicked good. ...started buyin vinyl like crazy.
Got Chicago at a thrift shop, still lookin for BST n spinnin wheels Just got PF love that $. I wash my records from thrift shops warm soapy distilled water and a good rinse.let dry Speakers...C Vega SL-12 but just got the SL-15 wicked boss bass. Vintage sx650, 750, 850 and 950 + a Kenwood kr6030 or kr6600. The $ I save from internet goes to vinyl.
I'll give you 10 for the sansui u can double your money 🤣 But really what would it take to pry it outta your hands
I'd have to think about that. Message/email me if you're interested.
Quite obvious that the SET amp is just more open and extended on the top end, with nice sparkle and noticeably longer sustain on things like cymbals. Maybe a bit more bloat in the mid bass. Not really any low bass in any of the recordings. I guess this is why high power SET amps cost tens of $$$. I have quite a few pairs of ADS Speakers, btw. Great speaker even by modern standards.
Alright. You can fix all issues with the green bottle. 😂
After a few... sips... can you truly trust what you see or hear? 😅 How do we know if the record was cut at precisely 33.33rpm or 1KHZ? How do we know the power line frequency is at precisely 60hz? It seems to me the most precise thing we can hang our calibration hat on is the quartz lock circuit/mechanism and the oscilloscope. With that in mind, there is an "offset" option for the RPM app to match the quartz locked turntable. I would suspect the source, in this case, and not the quartz mechanism... unless that has drifted off... which is unlikely.
What speakers were you using? Thank you
JBL 4411
Blueray better cd player
My experience is high end speakers and amplifiers have not improved in build or sound quality. Digital has improved and that's the only area i have spent money on my 90,'s audio system.
Hope you found a nice pair of speakers. Speaking of sensitive speakers 'Sound and Vision' reviewed and lab tested B&W CM9's and found them to achieve 92db sensitivity. I bought a pair long time back new and yes they have enormous volume capability and quite reasonable bass for their relatively modest cabinet volume. SQ wise though they are a bit forward and bright stock settings. It's the two crossover zones that sound a little off. The 250-400hz range iv given a approx 3db Q of 2 bowl shaped cut to which makes the mids sound less forward and more open. And also gave them a similar but even heavier 4db Q2 bowl shaped cut 2-4.5k which really helps out the sibilence of the big 6" midranges struggle with its 4k crossover to the tweeter (like a higher BBC dip). Pre-amp Yamaha RX-A3060. Amp Nad M3 Class A/AB amp. With their notable flaws damped I really like their overall sound.
I have my Denon table with the app at 33.32. The only adjustments you can make is making sure the belt track is clean. The pulley is clean and the bearing spindle is good. I think you would drive yourself crazy trying to get it down to the nitty-gritty. You couldn't possibly hear that difference although the tone generated from your vinyl record seems to have some flutter thanks for the video.
Hi, you mentioned lubing the motor shaft and showed still images, but what areas should be lubed? Thanks!
I've worked on so many turntables since this one, I can't remember exactly. In general, you want to find the service manual, and it should tell you where to lube with what.
I have a Phase Linear 400 restored and a Phase Linear preamp.
Also a Magnavox CD player like yours!
The Dahlquist are really nice. Got myself a pair recently. They are in rough shape though and need some restoration work. Can you provide us with some tips. Thanks!
I'll be checking out various online forums. And there's this: www.regnar.com/dahlquist-dq-10-upgrade-kits.html
I used to have a pair…they needed power and to be played loud to sound their best. Believe it or not you can improve the high end by cleaning the fuse contacts or even simply going to a slightly higher value fuse in the crossover.
I have a nicely restored pair of DQ-10's that I bought from a local seller here in Pasco County, FL for $375.
Wow! Great deal!
Nice!
Oh my!
Nice haul indeed! Looking forward to your impressions of the Dahlquist.