2. amps-preamps
  3. 189679-187056

Using 2 Amps with Audible Illusions Modulus 3A Preamp

I want to have 1 amp driving the woofers and the other driving the midrange and tweeters. Can I use a y adaptor coming out of the main set of outputs, or should I use the second set of outputs, which I believe has an additional cap in the circuit. Unlike some out there, I have never had my AI unit burning through tubes. ( I have only used the specifically recommended Russian ones or Tungsram, over the years)

laginz
hiend2's avatar
hiend2
376 posts
 

Why not just use the sets of output jacks on the preamp

Im doing the same here with a L3 Bi-amped

On my l3 there are resistors on the CD input to reduce Glare.

knotscott
814 posts
 

I split the outputs of my Lazarus tube preamp in a bi-amp configuration.  I use the solid spitters vs the y-adapters but either should do the trick.

imhififan's avatar
imhififan
2,123 posts
 

According to the Audible Illusions Modulus 3A manual, its output impedance is 1.2kΩ. It is best to check that the input impedance of the two power amplifiers paralleled should not be lower than 12kΩ, otherwise it may cause low-frequency roll-off.

https://www.allaboutcircuits.com/tools/parallel-resistance-calculator/

 

More to discover