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Trident 65 direct outs
Old 23rd August 2015
  #1
Gear Nut
Trident 65 direct outs

Does anyone know if the direct outs on the Trident 65 are balanced or unbalanced?
Old 24th August 2015
  #2
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voodoo4u's Avatar
I believe they're balanced. At least I think they were on mine. A quick way to find out, without taking it apart, is to slowly put a mono 1/4" jack into one and if you can feel it click twice as it gets to the end of the jack, it's balanced. One click is unbalanced.

Last edited by voodoo4u; 24th August 2015 at 02:35 AM.. Reason: typo
Old 24th August 2015
  #3
Gear Nut
Thanks for the help. Anyone know where I can find a copy of the manual? I don't have access to the board at the moment as it is in storage, and I really need to know definitively if the direct outs are unbalanced or balanced. Thanks in advance.
Old 24th August 2015
  #4
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Studerfreak's Avatar
 

The direct outputs on the Trident 65 are UNBALANCED.
Just like the insert sends and returns.

If you join the Trident forum on groups.yahoo.com you may find schematics.
https://groups.yahoo.com/neo/groups/TridentAudio/info
For access to files you need to become a forum member.

Last edited by Studerfreak; 24th August 2015 at 10:01 AM.. Reason: correction yahoo
Old 24th August 2015
  #5
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For future reference !
Attached Thumbnails
Trident 65 direct outs-backpanel.jpg  
Old 24th August 2015
  #6
Gear Nut
Thanks so much guys!!!
Old 24th August 2015
  #7
Unbalanced with a direct feed to the jack. It will NOT drive any load below 2k ohms, 600 ohm gear is a no-no. That prevents all your transformer coupled gear from being used in the inserts too.

Add a 100 ohm resistor in series with the direct output feed and you will stop the oscillations and THD driving longer cables. Use a better opamp and they will drive 600 ohm transformer outboard well.
Old 25th August 2015
  #8
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Quote:
Originally Posted by Jim Williams View Post
Unbalanced with a direct feed to the jack. It will NOT drive any load below 2k ohms, 600 ohm gear is a no-no. That prevents all your transformer coupled gear from being used in the inserts too.

Add a 100 ohm resistor in series with the direct output feed and you will stop the oscillations and THD driving longer cables. Use a better opamp and they will drive 600 ohm transformer outboard well.
The direct outs do drive my tape recorder with transformer coupled inputs through a 10 meters snake without any noise or problems (at least none that I can hear).
Old 25th August 2015
  #9
Quote:
Originally Posted by Jack Luminous View Post
The direct outs do drive my tape recorder with transformer coupled inputs through a 10 meters snake without any noise or problems (at least none that I can hear).
You may want to measure the voltage drop from the 071 opamps driving that load. If it is 600 ohms it may also increase THD significantly. Run a square wave and see the ringing/overshoot from the opamp.

The 65 can output a max of +21 dbu from the unbalanced direct outputs. Feed ing a 600 ohm load will also reduce headroom as you will loose a couple of db's in level.
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