Re: [BUILD] CAPI FC526~500 Series~FET Limiter Kit~Official Support Thread
« Reply #420 on: February 10, 2019, 03:34:30 PM »
Too All Guys having problems with TP2 during the first part of the calibration (Q-Bias) on a XFMR model and before you start scrutinizing your DT05 and resistors.....

DOUBLE CHECK YOU HAVE BRIDGED THE JUMPER ON RV7! (that little nugget costed me 4 hours)

I used logic pro x and the built in Test Oscillator plugin, output pointed towards the FC526.

0.0245 V = approx. -30dbu, measure with RMS voltmeter across Pin 2 & Pin 3 XLR out, adjust DAW out to get 0.0245 V and bypass all the patch bays and other crud

Good Luck, Mines Awesome :) Thanks Jeff!!

Matt



Re: [BUILD] CAPI FC526~500 Series~FET Limiter Kit~Official Support Thread
« Reply #421 on: February 23, 2019, 03:31:01 PM »
i have two of the rev1 comps. one is working perfectly. the second unit tests spot on with all of the test points except in meter cal tp10 with 7dbu of GR in im getting -0.826 vdc and vr8 does not change this. meter is pegged . Ive gone through the cal several times to determine if i missed something and reread this thread.

any input would be appreciated!
thanks

Re: [BUILD] CAPI FC526~500 Series~FET Limiter Kit~Official Support Thread
« Reply #422 on: March 07, 2019, 06:28:06 PM »
Has anyone experienced having the Peak LED illuminating as soon as the module is plugged in?

And any issues with getting the MTR TP 11 to read the proper voltage?

Re: [BUILD] CAPI FC526~500 Series~FET Limiter Kit~Official Support Thread
« Reply #423 on: March 07, 2019, 06:45:10 PM »
Too All Guys having problems with TP2 during the first part of the calibration (Q-Bias) on a XFMR model and before you start scrutinizing your DT05 and resistors.....

DOUBLE CHECK YOU HAVE BRIDGED THE JUMPER ON RV7! (that little nugget costed me 4 hours)

I used logic pro x and the built in Test Oscillator plugin, output pointed towards the FC526.

0.0245 V = approx. -30dbu, measure with RMS voltmeter across Pin 2 & Pin 3 XLR out, adjust DAW out to get 0.0245 V and bypass all the patch bays and other crud

Good Luck, Mines Awesome :) Thanks Jeff!!

Matt


What do you mean by "Bridged" RV7 Jumper? I was told to leave that portion blank.

jsteiger

Re: [BUILD] CAPI FC526~500 Series~FET Limiter Kit~Official Support Thread
« Reply #424 on: March 08, 2019, 10:00:16 AM »

What do you mean by "Bridged" RV7 Jumper? I was told to leave that portion blank.
In the BOM it says RV7 is not used and to "Jumper it". On the PCB silkscreen for RV7 it says JUMP and theres a silkscreen line connecting the 2 pads to jump.

IF THIS IS NOT DONE FOLKS YOUR COMP WILL NEVER WORK.
« Last Edit: March 08, 2019, 10:04:21 AM by jsteiger »
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Re: [BUILD] CAPI FC526~500 Series~FET Limiter Kit~Official Support Thread
« Reply #425 on: March 11, 2019, 01:45:46 PM »
So I am encountering an issue where as soon as I plug my module into my rack, the Red Peak LED illuminates, plugging in the module also causes the preamp next to it to peak even though there is no signal going into either module. Please give me any suggestions or ideas on how to fix this issue.

jsteiger

Re: [BUILD] CAPI FC526~500 Series~FET Limiter Kit~Official Support Thread
« Reply #426 on: March 11, 2019, 09:48:19 PM »
So I am encountering an issue where as soon as I plug my module into my rack, the Red Peak LED illuminates, plugging in the module also causes the preamp next to it to peak even though there is no signal going into either module. Please give me any suggestions or ideas on how to fix this issue.
Does the unit pass signal properly according to all of the Test Points?
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Re: [BUILD] CAPI FC526~500 Series~FET Limiter Kit~Official Support Thread
« Reply #427 on: March 13, 2019, 12:00:48 PM »
So I am encountering an issue where as soon as I plug my module into my rack, the Red Peak LED illuminates, plugging in the module also causes the preamp next to it to peak even though there is no signal going into either module. Please give me any suggestions or ideas on how to fix this issue.

Someone please get back to me on this. I can't seem to get this issue to stop I've tried everything I can think of!

jsteiger

Re: [BUILD] CAPI FC526~500 Series~FET Limiter Kit~Official Support Thread
« Reply #428 on: March 13, 2019, 12:32:47 PM »
Someone please get back to me on this. I can't seem to get this issue to stop I've tried everything I can think of!
You never answered my question. Have you passed all audio Test Points? Is the unit properly calibrated? What 2520 style opamp is in it and who built it?

It is possible that the peak LED is illuminated and doing its job because you are clipping the unit but you have not given us any other info to go on.
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CAPI is not affiliated with, endorsed by, or sponsored by API.

Re: [BUILD] CAPI FC526~500 Series~FET Limiter Kit~Official Support Thread
« Reply #429 on: March 13, 2019, 01:03:48 PM »
You never answered my question. Have you passed all audio Test Points? Is the unit properly calibrated? What 2520 style opamp is in it and who built it?

It is possible that the peak LED is illuminated and doing its job because you are clipping the unit but you have not given us any other info to go on.

Sorry I didn't see your original response. I will do all the tests and calibration etc that I can later today and let you know.


jsteiger

Re: [BUILD] CAPI FC526~500 Series~FET Limiter Kit~Official Support Thread
« Reply #430 on: March 13, 2019, 01:23:25 PM »
Sorry I didn't see your original response. I will do all the tests and calibration etc that I can later today and let you know.
The peak LED is the last thing I would worry about. If your unit is not passing audio or is all jacked up, that could explain the peak LED. BUT one thing at a time.
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Re: [BUILD] CAPI FC526~500 Series~FET Limiter Kit~Official Support Thread
« Reply #431 on: March 16, 2019, 11:35:04 PM »
Joe the only thing that's really throwing me off, is why would plugging in the FC526, cause the pre amp in my rack to also peak,  and have the vu meter and peak led indicate that the preamp is clipping???

jsteiger

Re: [BUILD] CAPI FC526~500 Series~FET Limiter Kit~Official Support Thread
« Reply #432 on: March 17, 2019, 01:14:30 AM »
Joe the only thing that's really throwing me off, is why would plugging in the FC526, cause the pre amp in my rack to also peak,  and have the vu meter and peak led indicate that the preamp is clipping???
Who's Joe?

I have no idea but once you verify that the FC526's audio path is OK or not, we'll get to that.
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CAPI is not affiliated with, endorsed by, or sponsored by API.


 

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