Author Topic: PRR-176 REV 4 Build Thread ***Manual up!***1/16/14 - (chk 1st post)  (Read 17925 times)

ilfungo

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  • Posts: 820
  • ITALY
Re: PRR-176 REV 4 Build Thread ***Manual up!***1/16/14 - (chk 1st post)
« Reply #460 on: July 30, 2014, 07:54:14 PM »
Hi Manulaf

"I saw that there was a plate balance trim in the latest revision of prr176. Why removed it ? Can it help me to fix my issue ?"

I'm just studying a little mod to add 1k trimmer for plate balance....
I  say you when I'm ready.

On my unit I've a strange problem.
The meter stay on 0, but on the left channel if I move the release pot, meter go up and down.
If then I switch in stereo mode, the meter are totally out , left -2 right + 2... :-\
Thanks


shot

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  • Posts: 198
  • Zagreb, Croatia
Re: PRR-176 REV 4 Build Thread ***Manual up!***1/16/14 - (chk 1st post)
« Reply #461 on: July 31, 2014, 10:55:45 AM »
I'm slowly going through BOM to create my shopping cart.

I noticed that on positions R11, R12, R65 & R66 there is 3K3 marked on the PCB
But on the schematic (included in BOM pdf document) it says 6K8
(check just after T3 transformer on schematic)

What is the correct value - 3K3 or 6K8?
What did you guys use?
Semi-pro level is -10 dBV (316mV)=>-7.8dBu; Pro level +4 dBu=> 1.23V ; Most insert sends of analog mixers operate at -2dBu=> 615mV

ilfungo

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  • Posts: 820
  • ITALY
Re: PRR-176 REV 4 Build Thread ***Manual up!***1/16/14 - (chk 1st post)
« Reply #462 on: July 31, 2014, 06:31:42 PM »
Hi Shot

6k8 is the right value...

johnnyscotch

  • Member
  • Posts: 149
Hey guys,

C112 on the PSU pcb is marked 47uF 25v, but the BOM says 100uF 25v


Also C110 is marked 100uF 16v, but on the BOM it says 470uF 25V

Do you follow the silkscreen or BOM?

thanks!
« Last Edit: Today at 01:56:31 AM by johnnyscotch »


 

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