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In Reply to: RE: Tympanis posted by andyr on June 01, 2017 at 02:14:11
Sure Andy, a couple of subs will deliver more/lower bass but they use to be difficult to integrate with planars and the listening room. Most listeners value the added quantity of bass more than a seamless integration. Large planar speakers can reduce the need for subs.
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Perhaps that depends on what your need for subs is ? :-))
I suspect you would have to have many Tymp bass panels combined with your 20.7s to deliver flat to 20Hz ... and flat to 20hz is what you need if you like organ music. :-)) (I can hear 16hz organ tones ... but not 12hz!)
Andy
I am not a great fan of church organs. Hearing or feeling? I have been told that we hear down to about 23 Hz. Below that we use our bodies to feel the sound. There is a certain overlap. Most speakers also distorts a lot at lower frequences. Sometimes we hear the overtone of what is being generated. I have some audio buddies that are infra freaks (mostly action movies). You will need sealed boxes and a sealed room to fully get that. In order to reproduce 20 Hz at 110 dB, you need to move about 6 liters of air.
Well, there's the same issue in a church, listening to the organ there. Whether you hear ... or feel the 16/20hz tones is immaterial - you know they are going on!
Yes, my subs are sealed - ported subs are a nono, IMO (trying to squeeze a quart out of a pint pot!).
The REW sweeps I have done in my room (with the door closed) show -3dB at 16hz - which is sensational, IMO! And given the sub cones only seem to move 5 or 6mm, I don't think they are getting into 'distortion' mode. But then, I am not listening at 110dB. :-))
Andy
The way I set up the T IV panels for wall loading and with good bracing I get the tangential room mode so the bass peaks at 25-40hz. but there is still useful output down to 16hz and the 20hz output is still at midrange output levels. The integration of a sub would not really do that much for extension as much as it would enhance bottom octave output. With a 20.7 in line, a Tympani would have baffle and output coupling effects with the mains to get you better bass and likely no need for enhancement till you get to 25 hz, where output would falter a bit..
If money is no object (must be nice ;-), the Eminent Technology TRW-17 is the only true subwoofer. Flat response to DC!
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