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Hi, is there a wiring diagram available that i can look at? I need to hook up my balanced jtree kit with my balanced inputs and un balanced inputs using an otto.
Thank you.
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Here is a quick diagram for wiring up the signals into and out of the relay boards for balanced use: Brian Donegan attached the following image(s):  Balanced_JT_Wiring.JPG (37kb) downloaded 1,003 time(s).You cannot view/download attachments. Try to login or register.
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Is it safe to assume the jumper is there for both boards in balanced use?
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Yes. The jumper causes the ground to be shared by both the + and - sides, so that both signals are referenced to the same ground. It is equivalent to using a jumper wire between the IN GND positions in the terminal blocks.
For single-ended use, you can leave the jumper out for separate left-right grounds, or use it if you have (or to create*) a shared ground.
*Creating a shared ground at the JT is not recommended unless you know what you are doing to avoid possible ground loops.
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Brian,
Your diagram above show the + signal going to the gnd and gnd going to input of one side of board is that correct?
Bill
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NO It is not correct. +IN(and out) and GND are swapped. Good catch. :) Edited by user Tuesday, May 12, 2009 7:04:44 PM(UTC)
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fault151 wrote:Hi, is there a wiring diagram available that i can look at? I need to hook up my balanced jtree kit with my balanced inputs and un balanced inputs using an otto.
Thank you. hope this is helpfull to you 
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nevermind... question bad. Edited by user Thursday, June 4, 2009 8:22:23 AM(UTC)
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When hooking up the wires to the joshua tree output posts in balanced mode, is it best to pair the + from both amplifier boards to the same jtree board and both the - amplifier boards to the other jtree board? Or does it not matter? Does that make sense?
For example:
b22 amplifier Right+ board connects to jtree board 1
b22 amplifier Left + board connects to jtree board 1
b22 amplifier Right - board connects to jtree board 2
b22 amplifier Left - board connects to jtree board 2
Thanks
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Use one JT relay board per channel. Both + and -.
You want to keep those signals close together.
Cheers!
Russ
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are you supposed to tie the boards' grounds together? Also, I have 30V coming in from a sigma 22 PSU. Should I put a zener diode or maybe just a resistor in line with the wiring to pull the voltage down a bit? It works with the 30V, but it gets hot quickly and I don't want to burn out the onboard rectifier. Edited by user Monday, January 18, 2010 2:47:08 PM(UTC)
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I would chassis-mount the vreg if possible, or at the very least use a larger HS for it with 30V in.
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I'm just going to go ahead and add a trafo. Also, for those trouble shooting their JTA's, I had a problem with one of my boards (I'm running a 2 board balanced setup) that turned out being fixed when I pushed the ribbon cable harder into the snap connector.
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