2. amps-preamps
  3. 1324578119

How do I hook up 2 preamps to one amp

I have a NAD preamp that I use for music. I have a Lexicon preamp that I use for Video. The problem is I have 1 five chanel amp that I need to use for both preamps. When I try to use rca splitters/y adapters, my speakers play at a low volume. If I disconnect one preamp, the speakers play louder. What should I do to allow both preamps access to my 5 channel amp and not have humming or low volume.
kartez

Showing 2 responses by orpheus10

orpheus10
8,668 posts
 
Go to radio shack and buy a double pole double throw switch. Connect each pre to one side of the switch and the amp to the center. By flipping the switch you will alternate between pre A or pre B feeding amp C.
orpheus10
8,668 posts
 
"This is the way I did it" All my parts came from Radio Shack. You can use expensive "audiophile" parts if you desire. First I constructed a small wooden box to house the parts. After I sanded, stained, and shellacked the box; it was quite attractive.

Next I drilled holes for the small red rectangle rocker switch and six female jacks. After installing this, I soldered wires from the jacks to the switch; L & R in from each pre, and L & R out to the amp.

I now use that same box with the 6 female jacks and rectangle rocker switch on another project.
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