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Old 03-12-08, 08:28 PM   #6 (Link)
 
deromax
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Alias: deromax
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Re: Cabling - LFE to Multiple Plate Amps


Quote:
Mike P. wrote: View Post
At one time I had four plate amps connected to a receiver the way you mentioned. I had no problem with "signal loss". As Boom stated, a phasing adjustment is a definite plus.
The signal may not get attenuated (no loss of gain) but I'd be more annoyed by the loading impedance becoming too low for some preamp out to cope with. Paralleling 4 inputs decrease the impedance seen by the source by a factor of four. So a 20 kOhms impedance become 5 kOhms. The preamp output may not like it and may actually overload at high output levels. Or maybe it won't care!

Try it. If you hear headroom issues, but have enough gain available, you may add resistors in your splitter to up the impedance value, then add gain to regain level. Or even better, you could use an audio distribution amplifier. You could probably build one with a few OP amp for cheap.


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