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 4 responses by herman

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When you use the splitter you are effectively hooking the 2 preamp outputs together which is never a good idea.

I haven't used a tape loop in a while but I don't believe that would work as described. The tape in from the Lexicon would be controlled by the NAD volume control if you use the regular outputs. It is the tape out that isn't affected by the volume control but if you use that then you won't be able to control the volume for music either.

Use the normal pre outputs from the NAD to the input of the amp. Take the Lexicon front L and R output and put into any unused input on the NAD including tape in. Choose that input when watching videos. When you do, set the volume control on the NAD so it matches the level when you have the Lexicon hooked directly to the amp.

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I considered that too but since I have no experience with either decided not to comment.

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Elizabeth,

What he said about the tape loop or what he said about just using the Lexicon?

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what Elevick said is the answer - both of his posts.

BDG,

no, he said to run the Lexicon through tape loop which will not work. In fact, I don't really know what that means. How do you "run something through the tape loop"?

What you said will work which is basically what I said.

Perhaps he wants to use the NAD for music because it has a phono section. In that case he could feed the tape out of the NAD to a Lexicon input, the Lexicon preouts to the amp, and use the lexicon to control the volume for everything.

Otherwise I agree just ditch the NAD.

I don't like the idea of a switch either. You need another set of cables and have to build a box to house the switch and connectors unless you want to cut the connectors off the ends of the cables.. It is unnecessarily complicated when there are much easier ways.

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