Hairball Audio

Re: [BUILD] New FET/RACK Official Help Thread - Please read first post!
« Reply #1220 on: May 08, 2018, 03:41:19 PM »

Can I purchase the bourns and will it work with this board? Which model?  Thanks

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Re: [BUILD] New FET/RACK Official Help Thread - Please read first post!
« Reply #1221 on: May 14, 2018, 11:32:20 AM »
Hello,

I am having some trouble with the power supply on my kit. I just finished building it and the ground test is reading correctly but I'm only reading like 200 mVDC when I do the next test. I've tried looking around for issues but can't seem to find any. Ideas on why I'm not getting any voltage?

Thanks.

Hairball Audio

Re: [BUILD] New FET/RACK Official Help Thread - Please read first post!
« Reply #1222 on: May 14, 2018, 09:28:40 PM »
Hello,

I am having some trouble with the power supply on my kit. I just finished building it and the ground test is reading correctly but I'm only reading like 200 mVDC when I do the next test. I've tried looking around for issues but can't seem to find any. Ideas on why I'm not getting any voltage?

Thanks.

There is a -10VDC and a +30VDC rail.

Which one is having the issue?

Mike
Hairball Audio, LLC
DIY Parts and Kits
http://hairballaudio.com/shop

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Re: [BUILD] New FET/RACK Official Help Thread - Please read first post!
« Reply #1223 on: May 17, 2018, 06:34:32 PM »
So I'm using the Hairball Rev. A daily now and it's ridiculously good (I've only used it on bass and electric guitars in the middle of my guitar blues-rock project for some instructional work so granted I haven't run acoustic guitar or vocals through it yet but for what I'm doing I can't imagine anything better; I drove the input stage yesterday (GR off) coming out of Lola on a 1x12" open back turned up to 8 and got the most vicious Page kind of dirty guitar-rock rhythm sound) & dreaming about building several more.....

I'm torn between a Rev D and the new Rev F although in time I'm sure I'll wind up with all of them. Stupid question but I'm thinking ahead....

For the Stereo Link on the Rev A, I'm assuming it wouldn't really be right to link that to a different revision? I'm micing cabinets now in stereo so often it's probably another Lola & Rev A to keep things even but just wanted to check in here for suggestions before I officially decide which way to go on the next order. I'm finally getting good guitar sounds!!! Thanks Mike

Sean

Hairball Audio

Re: [BUILD] New FET/RACK Official Help Thread - Please read first post!
« Reply #1224 on: May 17, 2018, 07:17:14 PM »
So I'm using the Hairball Rev. A daily now and it's ridiculously good (I've only used it on bass and electric guitars in the middle of my guitar blues-rock project for some instructional work so granted I haven't run acoustic guitar or vocals through it yet but for what I'm doing I can't imagine anything better; I drove the input stage yesterday (GR off) coming out of Lola on a 1x12" open back turned up to 8 and got the most vicious Page kind of dirty guitar-rock rhythm sound) & dreaming about building several more.....

I'm torn between a Rev D and the new Rev F although in time I'm sure I'll wind up with all of them. Stupid question but I'm thinking ahead....

For the Stereo Link on the Rev A, I'm assuming it wouldn't really be right to link that to a different revision? I'm micing cabinets now in stereo so often it's probably another Lola & Rev A to keep things even but just wanted to check in here for suggestions before I officially decide which way to go on the next order. I'm finally getting good guitar sounds!!! Thanks Mike

Sean

Nice!

Ya linking would mostly be for overheads on drums and you would want the same setup on both sides.  No need to link on a stereo guitar set up IMO.  And you could use different pres and revs.

Mike
Hairball Audio, LLC
DIY Parts and Kits
http://hairballaudio.com/shop

Top secret stuff and upcoming releases:
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Uroarz

Re: [BUILD] New FET/RACK Official Help Thread - Please read first post!
« Reply #1225 on: May 18, 2018, 05:33:38 AM »
   Hey guys I'm calibrating my 1176 rev A for the second time. What would be a full reset for the pots? i understand CW for the q-bias but what about the others? I'm on the "Reduction Meter Tracking Adjustment" and my output isn't going above 0.293 VAC. I'm putting in 1db 0.775 VAC on the input but the output is maxing out at 0.293 VAC. I'm assuming i need to reset all the pots but let me know. Thanks! -Austin

Hairball Audio

Re: [BUILD] New FET/RACK Official Help Thread - Please read first post!
« Reply #1226 on: May 18, 2018, 12:56:27 PM »
   Hey guys I'm calibrating my 1176 rev A for the second time. What would be a full reset for the pots? i understand CW for the q-bias but what about the others? I'm on the "Reduction Meter Tracking Adjustment" and my output isn't going above 0.293 VAC. I'm putting in 1db 0.775 VAC on the input but the output is maxing out at 0.293 VAC. I'm assuming i need to reset all the pots but let me know. Thanks! -Austin

Pots or trimmers?  The rest of the trimmers should be centered.  The front pots should be set according to the calibration guide.

Sounds like you have larger issues.  Check this guide and report back:

http://www.hairballaudio.com/blog/resources/post/fetrack-troubleshooting-guide

Mike
Hairball Audio, LLC
DIY Parts and Kits
http://hairballaudio.com/shop

Top secret stuff and upcoming releases:
http://facebook.com/hairballaudio
http://twitter.com/HairballAudio/