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Old 22nd December 2012, 06:00 PM   #1
diyAudio Member
 
Join Date: Nov 2002
Location: Largo, FL
Question DIY RCA "Y" splitter cables

Hello,
My goal is to biamp my speakers. And my preamp has only one "main out".
  1. Can I simply splice (soldering) 1 RCA cable into 2?
  2. Would this cause any damage to the preamp or to the 2 amplifiers?
  3. Besides testing for continuity, how should I test to ensure the output is equal to the 2 legs?

THanks.
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Old 22nd December 2012, 06:16 PM   #2
sreten is offline sreten  United Kingdom
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Join Date: Nov 2003
Location: Brighton UK
Hi,

Yes you can use a splitter cable. Your power amplifiers need the
same gain or one needs a volume control. To biamp 2-ways
you really only need a much smaller treble amplifier, and
adding a first order high pass to it by reducing the input
coupling capacitor will prevent bass causing clipping.

TBH bi-amping with similar amplifiers for me only makes
sense for 3-ways, one for bass, one for mid and treble.

rgds, sreten.
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When your only tool is a hammer, every problem looks like a nail - Abraham Maslow
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Old 22nd December 2012, 06:54 PM   #3
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Join Date: Nov 2002
Location: Largo, FL
Quote:
Originally Posted by sreten View Post
Hi,

Yes you can use a splitter cable.

rgds, sreten.
Thanks Sreten.
I may have a problem then. The objective is drive Martin Logan electrostics with tube preamps for the upper end and a solid state amp for the lowers.

And I would like to fabricate the "Y" cables myself.
Any further thoughts?
Rgds,
Joe
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Old 22nd December 2012, 07:11 PM   #4
sreten is offline sreten  United Kingdom
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Join Date: Nov 2003
Location: Brighton UK
Hi,

Why a problem ? ML's are not typical 2 ways, at all.

Some will feed the bass amplifier from an attenuator off
the valve amplifiers output (with variable level) to get
less change of character between the two amplifiers.

rgds, sreten.
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