|
|
Post by keymod on Nov 30, 2018 6:04:54 GMT -6
I just finished building 5 of these kits which I had in storage for a couple of years. Did the initial short circuit test and Power on test and everything is fine. I now have to do the calibration which is daunting to say the least and leaves me fearful that I will screw it up. Looking for encouragement.
|
|
|
|
Post by EmRR on Nov 30, 2018 9:02:46 GMT -6
I found the original wording confusing. I don't know if the updated docs changed it or not, but it wasn't hard once I understood it.
|
|
|
|
Post by indiehouse on Nov 30, 2018 9:17:46 GMT -6
I just finished building 5 of these kits which I had in storage for a couple of years. Did the initial short circuit test and Power on test and everything is fine. I now have to do the calibration which is daunting to say the least and leaves me fearful that I will screw it up. Looking for encouragement. I'm right there with you. I have two from the first revision and two from the second revision on the bench. It's the calibration process that's kept me from moving forward on the builds. I even bought a second hand Oscilloscope, but I have no clue how to use it. |
|
|
|
Post by EmRR on Nov 30, 2018 9:31:01 GMT -6
Mine are old look 1st rev. They are really good.
I don't remember clearly, but there was something counterintuitive about the original wording that could easily have you going in reverse order until the trim pots bottom out. If so....recenter and go the other direction! I think the wording was changed, and wasn't there a 'simplification' in the rev2 design?
There is (was?) a potential problem with some non-standard racks too, the initial voltage reference adjustments depend on correct VPR rack wiring, and won't align if not.
Read the big GroupDIY thread.
|
|
|
|
Post by keymod on Nov 30, 2018 9:56:16 GMT -6
Mine are first revision also. Tried reading the whole thread a few times - my eyes get blurry and head aches, LOL.
|
|
|
|
Post by Blackdawg on Nov 30, 2018 10:24:07 GMT -6
|
|
|
|
Post by Blackdawg on Nov 30, 2018 10:27:41 GMT -6
|
|
|
|
Capi FC526
Nov 30, 2018 15:07:38 GMT -6
via mobile
Post by mdmitch2 on Nov 30, 2018 15:07:38 GMT -6
The new ones don’t require the THD adjustment. But it can be done pretty easily in REW if needed. Just don’t ask me for details because I haven’t had to do it in a while.
|
|
|
|
Post by stratboy on Dec 1, 2018 14:47:12 GMT -6
Words of encouragement: go for it!
The worst you can do is not get it right and from what I hear, Jeff will help you out if you’re totally lost.
|
|
|
|
Capi FC526
Dec 11, 2018 10:20:38 GMT -6
via mobile
Post by kevinnyc on Dec 11, 2018 10:20:38 GMT -6
You’ll be my hero with a video tutorial of your successful calibration!
|
|
|
|
Post by keymod on Dec 16, 2018 10:21:17 GMT -6
Can anyone recommend a conversion chart which shows accurately equivalent voltages per a given DBU ? My DMM is quite accurate, but I need to know what voltages I'm looking for while doing this calibration.
|
|
|
|
Post by Blackdawg on Dec 16, 2018 10:44:03 GMT -6
Can anyone recommend a conversion chart which shows accurately equivalent voltages per a given DBU ? My DMM is quite accurate, but I need to know what voltages I'm looking for while doing this calibration. This should help: www.sengpielaudio.com/calculator-db-volt.htm |
|
|
|
Post by matt@IAA on Dec 16, 2018 12:22:32 GMT -6
Can anyone recommend a conversion chart which shows accurately equivalent voltages per a given DBU ? My DMM is quite accurate, but I need to know what voltages I'm looking for while doing this calibration. |
|
|
|
Post by keymod on Dec 16, 2018 13:16:43 GMT -6
So when the calibration instructions say to " apply a 1Khz sine wave at -30DBU " , I need to show 0.0254vrms. This is 254 millivolts, correct?
|
|
|
|
Post by matt@IAA on Dec 16, 2018 16:10:00 GMT -6
25.4 mV is 0.0254V
|
|
|
|
Post by gar381 on Dec 16, 2018 17:01:46 GMT -6
|
|
|
|
Post by keymod on Jun 11, 2019 6:29:48 GMT -6
Well, I gave in after some frustrating attempts and sent my units out to be calibrated by Billy Pratt. He did a great job, communicated well and was reasonable with cost. Very happy that I found him to do this for me. So, my sidecar is finally, basically, finished. Maybe.  Unless I switch out the Five Fish modules for CAPI VP28s...…. Or add faders...... Or a Silver Bullett…….. Anyway, some pics:   |
|
|
|
Post by Blackdawg on Jun 11, 2019 9:49:43 GMT -6
Well, I gave in after some frustrating attempts and sent my units out to be calibrated by Billy Pratt. He did a great job, communicated well and was reasonable with cost. Very happy that I found him to do this for me. So, my sidecar is finally, basically, finished. Maybe. Unless I switch out the Five Fish modules for CAPI VP28s...…. Or add faders...... Or a Silver Bullett…….. Anyway, some pics: Looks awesome! Is it all routed as channel strips through like a console? You build it all yourself? |
|
|
|
Post by keymod on Jun 11, 2019 18:18:21 GMT -6
Well, I gave in after some frustrating attempts and sent my units out to be calibrated by Billy Pratt. He did a great job, communicated well and was reasonable with cost. Very happy that I found him to do this for me. So, my sidecar is finally, basically, finished. Maybe. Unless I switch out the Five Fish modules for CAPI VP28s...…. Or add faders...... Or a Silver Bullett…….. Anyway, some pics: Looks awesome! Is it all routed as channel strips through like a console? You build it all yourself? Thank you. Yes, like channel strips. Everything from kits, except the 8200 & 8200A. I had Redco punch out the metal work for the meters and I did all the wood work myself. |
|
|
|
Post by Blackdawg on Jun 11, 2019 18:48:26 GMT -6
Looks awesome! Is it all routed as channel strips through like a console? You build it all yourself? Thank you. Yes, like channel strips. Everything from kits, except the 8200 & 8200A. I had Redco punch out the metal work for the meters and I did all the wood work myself. Very cool! Looks like a cool side car! Lots of tone options there. |
|
|
|
Post by Johnkenn on Jun 12, 2019 21:54:11 GMT -6
Well, I gave in after some frustrating attempts and sent my units out to be calibrated by Billy Pratt. He did a great job, communicated well and was reasonable with cost. Very happy that I found him to do this for me. So, my sidecar is finally, basically, finished. Maybe. Unless I switch out the Five Fish modules for CAPI VP28s...…. Or add faders...... Or a Silver Bullett…….. Anyway, some pics: View Attachment View AttachmentOr VP28 Platinums...which yours truly could help out with |
|
Unless I switch out the Five Fish modules for CAPI VP28s...….
