DBX subharmonic synthesizer
rubin
Posts: 565
I have this dbx product which runs through the tape loop of my preamp.When activated this thing will easily bottom out the woofers.Under the hood there is a large circut board and a very snall transformer.How does it produce so much bass?It's actually quite impressive.Would it be similar to the loudness button found on some receivers? When I do use it I have to be careful not to destroy the bass drivers.
Post edited by rubin on
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Would it be similar to the loudness button found on some receivers?
yes, it is an EQ circuit with a bump in the bass dept.,Dodd - Battery Preamp
Monarchy Audio SE100 Delux - mono power amps
Sony DVP-NS999ES - SACD player
ADS 1230 - Polk SDA 2B
DIY Stereo Subwoofer towers w/(4) 12 drivers each
Crown K1 - Subwoofer amp
Outlaw ICBM - crossover
Beringher BFD - sub eq
Where is the remote? Where is the $%#$% remote!
"I've always been mad, I know I've been mad, like the most of us have...very hard to explain why you're mad, even if you're not mad..." -
I'm not sure if it works on the same principal but Audio Control had a similar product the Phase Coupled Activator.I believe the intent of both units is the restoration of the lowest octave only,whereas a loudness contour will work well up into the midbass and is only meant to compensate for low listening levels.Testing
Testing
Testing -
I'm not sure if it works on the same principal but Audio Control had a similar product the Phase Coupled Activator.I believe the intent of both units is the restoration of the lowest octave only,whereas a loudness contour will work well up into the midbass and is only meant for low listening levels.
your right, I over simplified my answer.
The DBX takes the lowest octive in the original signal, recreates it an octive lower and blends/adds it to the original signalDodd - Battery Preamp
Monarchy Audio SE100 Delux - mono power amps
Sony DVP-NS999ES - SACD player
ADS 1230 - Polk SDA 2B
DIY Stereo Subwoofer towers w/(4) 12 drivers each
Crown K1 - Subwoofer amp
Outlaw ICBM - crossover
Beringher BFD - sub eq
Where is the remote? Where is the $%#$% remote!
"I've always been mad, I know I've been mad, like the most of us have...very hard to explain why you're mad, even if you're not mad..." -
your right, I over simplified my answer.
The DBX takes the lowest octive in the original signal, recreates it an octive lower and blends/adds it to the original signal
Now that you guys mentioned it,yes that's what does, as I remember reading.But is it considered good/accurate bass or exagerated bass?Personally I like it. -
I'm not sure if it works on the same principal but Audio Control had a similar product the Phase Coupled Activator.I believe the intent of both units is the restoration of the lowest octave only,whereas a loudness contour will work well up into the midbass and is only meant to compensate for low listening levels.
Ya I remember the A C unit also. -
I have no personal experience with it but my take is that as with any signal processor over zealous use will result in very unnatural effects.Used in moderation it "may" add a pleasing amount of bass extension to a system.The fact that you like what it does is all that matters..But is it considered good/accurate bass or exagerated bass?Testing
Testing
Testing -
fool around with it and have fun, but I would not use it for, well only for low level listeningDodd - Battery Preamp
Monarchy Audio SE100 Delux - mono power amps
Sony DVP-NS999ES - SACD player
ADS 1230 - Polk SDA 2B
DIY Stereo Subwoofer towers w/(4) 12 drivers each
Crown K1 - Subwoofer amp
Outlaw ICBM - crossover
Beringher BFD - sub eq
Where is the remote? Where is the $%#$% remote!
"I've always been mad, I know I've been mad, like the most of us have...very hard to explain why you're mad, even if you're not mad..." -
fool around with it and have fun, but I would not use it for, well only for low level listening
Yep low level only otherwise too much(dangerous)cone movement. -
A DBX subharmonic synthesizer samples bass frequencies between 55 and 110Hz, synthesizing corresponding frequencies exacly one octive lower and mixes then back into the music. This would not be the same as the loudness contour for low listening levels.
Setting amount of synthesized bass accordingly, you should have no problems listening at any spl level. These units are good for older material where they rolled off the bass as it creates corresponding amounts of bass in the lower octive.
Arthur SchopenhauerAll truth passes through three stages. First, it is ridiculed, second it is violently opposed and third, it is accepted as self evident. -
I have the AudioControl version which supposedly takes the upper harmonics left over from the bass which was lost in the recording process and re-creates what used to be there from these higher harmonics. It sounds good so long as you don't over use it. Like a subwoofer you should only hear it now and then on something special. Of course we all know how everyone sets up subwoofers these days...
madmaxVinyl, the final frontier...
Avantgarde horns, 300b tubes, thats the kinda crap I want...
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I have the AudioControl version which supposedly takes the upper harmonics left over from the bass which was lost in the recording process and re-creates what used to be there from these higher harmonics. It sounds good so long as you don't over use it. Like a subwoofer you should only hear it now and then on something special. Of course we all know how everyone sets up subwoofers these days...
madmax
ya too loud!!!! -
A DBX subharmonic synthesizer samples bass frequencies between 55 and 110Hz, synthesizing corresponding frequencies exacly one octive lower and mixes then back into the music. This would not be the same as the loudness contour for low listening levels.
Setting amount of synthesized bass accordingly, you should have no problems listening at any spl level. These units are good for older material where they rolled off the bass as it creates corresponding amounts of bass in the lower octive.
It's easy to get carried away with it and over use .
