Distributed Bass Array configuration

There is no such thing as stereo bass below 80 Hz since it’s a fact that humans cannot determine the originating location of any sound deeper than approximately 80 Hz.

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I agree 100% mapman..

It’s not about what we can determine. If you only use the signal from the left of a stereo recording you are leaving out 1/2 of the TOTAL BASS signal. There is a RIGHT side too. There is a left a right and the combination of the TWO.

Mcintosh Preamps
4 outputs; A, B, unswitched and LTE (on the MX120 and C2500)


A - 80hz and down the Rythmik amps (GRs 2 x 12" OB)
B - I run a modified 2496 to split the signal from 80 - 300 hz.
UN switched to the passive XOs for Monitors ONLY (no bass)..
LTE (unused)

When I run just "B" , and turn OFF the monitor amps. LOL There is NO MONO anything... It IS STEREO.. PERIOD.. 80 hz to 300 hz is ALL STEREO.. My ears YOUR ears and anybody else’s ears (as long as they both work pretty good) is gonna hear a stereo signal WITH a center channel to BOOT..

80hz and DOWN has a stereo signal left and right, the TWO are a complete signal with ALL the different BASS tracks laid down. It has NOTHING to do with mono or stereo HEARING. PERIOD!!

JFTR :-)

< 20 - 60 hz is considered SUB BASS. It is MONO, I don't care what you do to it. BUT if there is a left and right SUB bass signal from the source that is replaying via the MIXED recording, you can't just use the left or right signal and call it good. 

I've read here on AG countless times "it makes no difference because its MONO", use either the left or the right output. NO!

You have to use BOTH LEFT and RIGHT signals to play the WHOLE bass track...

Second. BASS is directional PERIOD.. 60 - 80 hz is transitional from SUB to BASS. BASS is 80-250 hz. 

The problem is the decay rate of ALL the lower frequency waves 80 < loading the room and BOOMING.

I went to GRs OB servo system.. FIXED that problem, right NOW! BOTH sided of the cone are in the room. How simple is that? The only place and WAY OB works for ME.
It has a step baffle and a pretty well programmed firmware chip.. Rythmik plate amps.

The other problem is overshoot from 80-250 hz (where ALL the SLAM is).

THAT is where a lot of systems get sloppy from MB to MIDS, they get muddy and OVER-exaggerated low mids.. or bloated? I can't stand when the congas SUCK. or Cher's voice.. :-) A baritone girl or a Contralto (to be correct) sound bad.. 

I direct couple the MB columns to serious class d 12k pro amps.. and use an active full blown DSP XO. It Fixed the overshoot problem for the first time without a (SLOW A$$) VERY EXPENSIVE accelerometer set up.. 1/10 the cost..

There is a difference in SUBs and BASS BUT I keep seeing the TWO used as if they were the same thing.. I use two different drivers for TWO different things.. More floor space but a much bigger smile. :-)