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favorite this post BBE 422 Sonic Maximizer - $100 (Traverse City) hide this posting unhide

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condition: excellent

IF THIS ITEM IS LISTED IT'S STILL FOR SALE, I WILL TAKE IT DOWN WHEN IT IS SOLD!

BBE 422 Sonic Maximizer in Excellent condition. Original owner, original box and packing.

$100.00 or best offer.

Call - 23one-947-527one - 231-947-5two71 This phone does NOT accept text messages.

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IF THIS ITEM IS LISTED IT'S STILL FOR SALE, I WILL TAKE IT DOWN WHEN IT IS SOLD!

BBE 422 Sonic Maximizer in Excellent condition. Original owner, original box and packing.


BBE 422 corrects the phase and amplitude relationship on the harmonic and fundamental frequencies which is called " envelope distortion". The loss of sound integrity is perceived as muddy and smeared. To correct problems BBE applies phase correction to the high frequencies. Furthermore the signal is broken up into three sub-bands. The low group is delayed about 2.5 ms by a low pass filter. the mid drop is delayed about 0.5 ms and passes through an active band-pass filter. The high frequencies are used as a point of reference. To make dynamic amplitude corrections to the high frequencies. Two RMS average loudness detectors continuously monitor the both the mid-range and the high-frequencies to compare the relative harmony content levels of the two bands.

The Sonic Maximizer is a dual channel enhancer designed to operate with -10dBu levels. It works by applying phase correction to the high frequencies which it does by splitting the sound into 3 bands, crossover frequencies being 150Hz and 1200Hz, and applying delays to the two lower bands. The high band passes through a VCA and is controlled in relation to the mid band. There are two modes - 'Auto' mode provides dynamic response so that the 422 expands or compresses the high band in relation to the mid, while in 'Manual' a factory preset expansion ratio is applied. Each channel has a Lo-contour and a Definition knob. Lo-contour is for bass EQ at 50Hz, Definition regulates the processing of the high band in relation to the mid and effectively adds more top end.
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