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Old 10th February 2004, 11:47 PM   #1
diyAudio Member
Join Date: Sep 2003
Location: Calgary Canada
Default Low Pass Pre Outs

I am in the middle of Creating / designing a pre-amp.

I have a mono sub 120hz crossover point @ 24dB octave drop. This is being fed to it's own RCA jack.

Right now i am combining R+L channels with a summing op amp with unity gain. Am I going to run into a problem where bass on both channels is going to be twice as loud as bass on only one channel?
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Old 15th February 2004, 12:47 PM   #2
sreten is offline sreten  United Kingdom
diyAudio Member RIP
Join Date: Nov 2003
Location: Brighton UK
Some form of volume control for the sub is a good idea.

Its unlikely sub amp gain and subspeaker voltage effeciency
will match the main speakers correctly.

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