Splitter -- One preamp to two amps. What to use?


I need your help! If people are bi-amping, How are they connecting from their preamp to their two amps and to their speakers?

I am currently running my NAD 1700 preamp with two separate outputs. One is a Lab unfiltered RCA out which goes to my Mid’s and Highs into one of my NAD 2600 amps. And I have a second RCA Normal, which is lower fidelity which runs thru another NAD 2600 into my woofers. I then run two sets of 10 gauge Blue Jean cable to each speaker. What I would like to do us upgrade my speaker wire ( AudioQuest Redwood or DR Acoustics Red Sky Bi wire ) which are bi-wire cables and bridge my amps to achieve 450 watts per channel.

Here is the problem. In order to do this I need to split the one output from the Lab RCA on my preamp to feed the two separate amps. I am currently using Audioquest Waters and hate to put something inline that is a lower quality than the Waters.

I can’t believe I am the only one with this problem. How are the smart audiophiles addressing this problem?
captaindidactic

Showing 2 responses by mrdecibel

Your best option, ime and imo, and this is because you have two exact stereo amplifiers, is to passively, vertically biamp the ARs. What this entails, is each amp drives one speaker. Each amp would have one channel feeding the bass, the other channel of the same amp feeding the midrange and treble. Repeat for the other channel. One rca channel from the preamp to each amplifier, with a y splitter going to each the left and right input of the amp. All 4 speaker wires should be the same ( same for the woofers, and same for the midrange and tweeters ). Y connectors would have a 1 female rca,  accepting from the preamp cable, to a pair of male rcas, going to each channel of each amp. Enjoy ! MrD.