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Blackstar HT1r amp or computer
Please tell me what is going on in this amp that it's this busy. I just wanted to change out a few signal caps to OD. Any help?1 Photo
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After stopping the squeal the first time by moving the input jack lead I never looked at it again. Sure enough thanks to JM Fahey I knew where the problem...
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First grid or the input from input jack to the lead channel. In the pic its the lead that runs to V3 with V1 and V2 being the tubes to the right that are...
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Seems everyone is stumped like me. I am just thinking about building a noise gate and put it inline. The mxr schematic seems like minimal parts and should...
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For shits and giggles I once again swapped tubes from a 100w high gain amp that is dead quiet to this amp and lil piggy squealing. I tapped all the tubes...
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Ok I am back to this amp that is gonna be the death of me. Sometimes you just have to walk away and think about it. I usually come up with some ideas but...
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Hey Justin
There is always little flecks of solder during the process of building and if its not a lot all I do is turn it upside down and shake a...
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Ok so now I am really freaked out. The amp no longer squeals on the bench or whenever it is upside down. The moment I put it in the headshell and of course...
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I found it finally!!! The input to the lead channel was shielded and grounded properly and I used a 68k directly on the triode pin but it ran underneath...
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Wow! Ok now I have some things reacting. The bass on the lead channel doesn't do anything but the mid and treble definitely have a big effect on that squeal....
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the pre gain volume does not affect the squeal but does work flawlessly otherwise.
I disconnected the NFB and the squeal was still there over...
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Alright. That was a half assed thread starter. My apologies I know better.
I work hard on my lead dress but I sometimes put signal lines too close...
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2 Channel Amp Help with squeal on one channel
I am frustrated with finding where the squeal is coming from. The channels share no parts except when they get to the LTPI. The one channel which has almost...
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New Build PT help
So I sold a build for a SE EL84 high gain amp. It's based on an amp I built before and I always used the Hammond 269EX which I first used because it came...
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I want to "Like" what you wrote but I don't see an icon anywhere to do that. You are always so informative and you say it in a way I can understand....
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OMG!!! The new girlfriend put all these little notes over my work bench. That chewed up toy was in the hamster cage. So freaking funny you keyed in on those...
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Hey Chuck here is the SE84 amp that my friend wants as the crunch channel. Yes the convo has turned into a SE84 amp but my original question was could I...Last edited by chunkitup; 07-05-2017, 10:32 AM.
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Wow! I turn away from my phone for a day to celebrate the holiday and the thread explodes. Chuck, here is the schematic and if you can't read it I'll try...
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Chuck thank you! You answered a lot of my doubts. I love the sound of the crunch channel running thru the SE 84 and to hear you say the 84 is unique in its...
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That would be the Sovtek 5881. I heard that's the only one that can withstand the high plate voltage. And I hear it breaks up earlier than most 6L6's so...
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