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In Reply to: RE: At that frequency range posted by Les Hudson on August 10, 2010 at 07:55:07
I disagree. Recorded music may not contain anything below 32 Hz except in rare cases, but low bass (below that) is present on many recordings in the form of venue information. An orchestra may not play a single note below 30 or 35 Hz, but the concert hall often conveys more.
One of my clients has electrostatic subwoofers that are flat to 20 Hz, I think 3 dB down at 14 Hz, with usable response to 8 Hz. Another client is considering a pair of Bruce Thigpen's unique rotary subwoofers (http://www.rotarywoofer.com) which are effectively flat to DC. Thigpen's product rolls off substantially above 30 Hz. That is a subwoofer, and for its performance is something of a bargain, in my opinion.
Brian Walsh
Remember, Central Fest is on Saturday, Sept. 4th, and you're invited! Email me for details.
Follow Ups:
If you want to reproduce hall rumble, just run the PPSL boxes sealed and EQ the low end (like BagEnd).
Edits: 08/12/10
Why not:
- Much lower sensitivity due to EQ
- I'm a purist. The less stuff in the chain the better. EQ is a lot of stuff. Lots more to be said.
- It does not address LF response, or more correctly the lack thereof, at low volumes.
Brian Walsh
Remember, Central Fest is on Saturday, Sept. 4th, and you're invited! Email me for details.
"Much lower sensitivity due to EQ"EQ does not affect sensitivity, box size does.
It makes no sense to build a huge box to have high sensitivity at 8~10hz.
It makes sense to build a medium sized box with high sensitivity above 40hz and EQ it to have output at 8~10hz. Hall effects (room rumble), may be low in frequency, but they are not particularly loud.
"It does not address LF response, or more correctly the lack thereof, at low volumes."
So you want loudness compensation?
"I'm a purist"
OK, if you say so.
"EQ is a lot of stuff"
EQ may be designed into an existing circuit, frequently without needing extra active stages.
Edits: 08/12/10 08/12/10 08/13/10
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