Does Front Porting a Speaker Make a Difference? 32 Hz tuning
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- เผยแพร่เมื่อ 7 มี.ค. 2024
- Does front porting a speaker make a difference vs rear porting? It was left out of the discussion in the video but these speakers were tuned to 32 Hz.
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What a port does primarily is tune the resonant frequency of the bass driver. The output of the port itself - which could be reflected directly off the wall if it's a rear port - is marginal in comparison.
would love to see a second video highlighting midrange leakage/port resonances
Great idea!
Thanks for the info! I wish I say this before building the Torii P2. I would have liked to put the ports in the back to show off the beautiful from panel. I guess I'll just have to build another one!!
Sorry Ara! Next time ask us first ;)
Excellent info! I am currently working on a pair of speakers for my HT and was forced to change from rear ported to front due to space constraints. Seeing this comparison was quite informative
Glad it was helpful!
Nice explanation, great work here. I always wondered how much of a difference there was. Really interesting stuff!
Great video
Thanks!
Just out of curiosity would having a little bit of a box at the bottom, back for rear ported speakers that kind of looks like a backwards foot and having the "ports" on the top of the little box that would be at the bottom back part of the speaker would look like toe nails. You would be able to put them right up against the wall and would not obstruct the sound. I do not know if it would sound ok or not. Just an idea i was thinking of while watching this video.
I'm having a hard time visualizing what you are describing but building the speakers in a way that the port doesn't get blocked when pushing them up against a wall is definitely something you could do.
Thank you for this explanation - I *think* this idea started by the fact that you can't locate a rear ported speaker right hard against the wall - because it actually blocks the ports. But it has morphed into that somehow a rear ported speaker will get too much room gain vs a front ported speaker. Which is what you show is incorrect - so again, thanks!
I think it morphed into a marketing talking point over the years
@@css_audio Yes, that could be it?
Bass is omnidirectional, but somehow where the port is located matters? 😅 Speakers need to be pulled away from a wall boundary.
@@jonathandavis9507 Right, generally speakers get too much room lift - but some speakers are designed to use the room lift.
Is that a coaxial behind you? Can't wait!
It is a 7" waveguide
IMO passive radiators in the front of the speaker sound more clean and articulate then any port.
Depends on the space.
Any thought given to using passive radiators instead of ports?
What about No port??
That would convert the box to sealed which will drastically change the low end response. You will still see the same effect as you push close to a wall.
+/- 20 db
Not a good look
Is the response better in a vacuum ?
Apparently it is which is no surprise +/- 3 db as expected
Otherwise, very interesting content relative to ported speaker placement
These types of swings are very common with in-room bass measurements. Anechoic measurements are +/-3dB 32-20kHz
@@css_audio Tharbamar just put up a video with one of your kit speakers and said he was letting his KEFs go in favor of your speakers.
I commented that was what I would have done as well
I edited my comment to reflect your comment
Your speakers are held in high regard as you know.
I was going to buy your bookshelf speakers but don’t want to put a crossover together
I don’t feel competent to do so
I buy my custom and kit crossovers assembled from a company that provides design and full assembly services
@@middleearthltd thanks for the kind words! Have you seen our SmartNode crossover boards? They're designed specifically to make it easy for first-time crossover builders to have success right out of the gate. I'm confident you could do it!
I found out that the front port on a center channel makes a small difference. This is because the rear port of a center speaker is almost always in the direct line of sight of the back-wave of the speakers hence some mid-rage will escape through the port and cause cancellations.. For the front port, only reflected sound can escape through it but all or some are absorbed by the damping materials before they can reach the port.
Would love to see a comparison between MDF vs real wood panel cabinets. Just need to be convinced by real pro.