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Open baffle subwoofer

Don't forget that the room has a great impact on bass response. What's good on your friend's room can be disapointing in your room.

I think it's a good advice to finish your speaker before. Listen to them, measure your room if possible and see if you have a bass issue to begin with.
An OB subwoofer can't be place where you necessarly want it. If you have a room mode at 70hz and can't place your OB sub where it helps you'll never get the bass you want.
 
patate91 said:
Don't forget that the room has a great impact on bass response. What's good on your friend's room can be disapointing in your room.

I think it's a good advice to finish your speaker before. Listen to them, measure your room if possible and see if you have a bass issue to begin with.
An OB subwoofer can't be place where you necessarly want it. If you have a room mode at 70hz and can't place your OB sub where it helps you'll never get the bass you want.
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My loft is a big rectangle. It definitely has bass problems i can hear it. once we move to the new house I'm gonna put bass traps in my listening room and acoustic panels. My mom said I can have the whole family room to use :)
 
ev13wt said:
wth how did I think of Germany? Must be the name Erwin. Sound like an old German grandpa
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Hes from the philippines.

Germany was great, however I took some emotional excessive baggage that I was not planning on taking with me.

I may have had a "thing" going with my german exchange partner (a girl). I got kinda emotional about it as it could not go any further.
So yeah Germany was great
Oh and the castles and cities were nice too!





She started it......
 
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nick parkin said:
The bass. Ohhhhhh the bass. They tuned their tube amp so the bass sounds like this
Its hard hitting and deep. Powerful and clean, however the bass just sort of comes out and touches you, then goes back into hiding. its really fantastic, borderline spectacular! It is not boomy at all. The woofer only provides bass ONLY when the music calls for it. its just sooooo nice!
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Look. We know how colorful you can describe the sound (is this the first semi decent system you have heard in your life?) but you first write tube amps, then the bass hase a plate amp, then its "tuned tubes".

What is it? Tuned tubes that can move 15" woofers to 90dB without an enclosure... wait. How about 2 OB woofers that can do 90dB? Something isn't adding up here - you need to stop posting and start reading. Focus that energy.


Watch those first 15 minutes of the vid I posted. It WILL open your eyes to the subject of: "If you know or see, or are being told what you hear - you hear it!"
 
ev13wt said:
Look. We know how colorful you can describe the sound (is this the first semi decent system you have heard in your life?) but you first write tube amps, then the bass hase a plate amp, then its "tuned tubes".

What is it? Tuned tubes that can move 15" woofers to 90dB without an enclosure... wait. How about 2 OB woofers that can do 90dB? Something isn't adding up here - you need to stop posting and start reading. Focus that energy.


Watch those first 15 minutes of the vid I posted. It WILL open your eyes to the subject of: "If you know or see, or are being told what you hear - you hear it!"
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the tube amp amplifies the input signal which it outputs to the plate amp. So you can still tune the amp to change the sound of the bass. All the plate amp does is amplify the goodness that the amp outputs.

He let me borrow his 7 watt per channel tube amp, and my polk audio subwoofer sounds better than ever.
 
There's a lot of good info for OB subs online. Many DIY builds. With your Zenith/tweeter highs, you could easily build a H-Frame sub, and integrate them, if desired? Like this:

0d1b5f0cb3be9e5373559531baede238--audiophile-speakers-audio-speakers.jpg


But multiple woofers are usually required for an OB sub. A single woofer won't move much air, since there's no box support for the woofer, when used OB.

78f220b812111d0db4e6fb9aa28ac015--diy-speakers-diy-audio.jpg


Though, if you really want to use 8" OB woofers, this is one of the best implementations. Designed by Nelson Pass, so it's good.

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http://www.enjoythemusic.com/diy/0911/slot_loaded_open_baffle_speaker.htm

Good luck.
 
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StimpyWan said:
There's a lot of good info for OB subs online. Many DIY builds. With your Zenith/tweeter highs, you could easily build a H-Frame sub, and integrate them, if desired? Like this:





But multiple woofers are usually required for an OB sub. A single woofer won't move much air, since there's no box support for the woofer, when used OB.



Though, if you really want to use 8" OB woofers, this is one of the best implementations. Designed by Nelson Pass, so it's good.




http://www.enjoythemusic.com/diy/0911/slot_loaded_open_baffle_speaker.htm

Good luck.
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Well erwin has a 15' mounted on an open baffle and it sounds just fine....
we can't hear any low frequencies being canceled out. I brought this to his attention. I said "but won't the low frequencies cancel out"

He said "nick my friend, you can use your O-silly-scope to take measurements, microphones to take frequency response measurements, but there are 3 kinds of ears. The engineer, the testers, and the people who buy the product. the only ear that matters is the ear of the person who buys the product." what he's saying is that it does not matter what the measurements say. It all matters what your ears say.

That said there is validity to the fact that low frequencies get canceled out. Each of his open baffle speakers are pointed at an angle to the listener, and each have a wall next to them, which won't allow the bass to wrap around on both sides. The wall blocks the bass on one side, resulting a only a partial cancelation of the low frequencies, which he can account for with the eq on the plate amp. Scientifically its difficult to explain why the bass on his speakers can play so low, but they do even though conventional wisdom tells just that it shouldn't!
 
nick parkin said:
My loft is a big rectangle. It definitely has bass problems i can hear it. once we move to the new house I'm gonna put bass traps in my listening room and acoustic panels. My mom said I can have the whole family room to use :)
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You can quickly identify your bass issue you à tone generator and walking through your room and sitting at various spot.

http://onlinetonegenerator.com

You can test with 10hz increments. Some frequencies will disapear. Speakers placement could solve a couple of them.
 
Generally woofers with a Qts of 1.0 or higher are recommended for use in open baffles. The Tymphany has a Qts. of .33.

That being said I was surprised by the nice bass performance of these 16 inch woofers pulled from an old Sansui left on the curb. I have no idea of

their Qts but would not expect it to be very high.


PC130020.JPG
 
mkane said:
thanks for the link also but, how do you use it?
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You have to play a tone, let say 70hz, leave it on and then walk in your room, and sit un various spot. You'll ear by yourself what's happening.

Note that you need a way to connect your computer to your amp.
 
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