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  1. Replies
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    If the problem is with the FX jacks, it could...

    If the problem is with the FX jacks, it could easily be triggered just from the clunk of patching in a new cable, as well as the amp warming up and causing the metal to expand. See the thread about...
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    Plug a patch cable between FX Send and FX Return....

    Plug a patch cable between FX Send and FX Return. Does that fix it? If it does, you need to clean the return jack.

    Also, you must measure the resistance of your speaker cable before you may...
  3. I did something this week while re-capping a...

    I did something this week while re-capping a AA165 Pro Reverb. While pulling the old 20uF filter caps at the same time, which I don't usually do, a yellow wire came out that could have gone to two...
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    Yes they are beautiful, but very much a difficult...

    Yes they are beautiful, but very much a difficult situation to deconstruct. And There is NO WAY I am at all interested in re-engineering an amp that was just built for a guy, and is currently being...
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    Tough spot to be in with a new Matchless

    A Matchless sponsored player brings me a new C-30 that was built for him. It is an AC-30 inspired build. His complaint is that it lacks treble, and sounds like there is a blanket over it on the drive...
  6. termos, you really need to start a new thread for...

    termos, you really need to start a new thread for this.
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    Tremolo is up/down change in volume, vibrato is...

    Tremolo is up/down change in volume, vibrato is up/down change in pitch. Leo had that wrong.
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    "I couldn't measure the ohms on those big...

    "I couldn't measure the ohms on those big violet/blue (resistors ?) that were connected to the screens"

    Why not? That seems easy enough.
  9. No output from either channel in Fender Blackface amp

    I did a full electrolytic re-cap on a 1965 Pro Reverb. When I powered it up, I had very, very little sound from an iPod. I thought PI tube? Nope it makes noise when I put meter to grids. Moving back...
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    Crap in the gap!

    A EV ZLX powered speaker came in for sounding dull. Playing recorded music through it revealed a weak sounding horn. It was there, but not like it should have been. I pulled the diaphragm for...
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    Knucklehead alert! I was forgeting about the...

    Knucklehead alert! I was forgeting about the little red jewel, which had come out of the hole and was in a bin of parts. I was trying to get the white part to snap into the chassis hole, which it...
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    Blasted Blues Jr pilot lamp.

    Is there a trick for installing these plastic pilot lamps? It just popped right out, but for the life of me I can't get it back in.

    56263
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    I ordered a turret board from him a couple of...

    I ordered a turret board from him a couple of years ago. He sent me the wrong one, refunded my money and told me to keep the board. Sorry to hear this turn of events.
  14. I get paid to do sound gigs. I do not make sense...

    I get paid to do sound gigs. I do not make sense of your second sentence above, but if you have keyboard sound thru your mains, this is not an issue. Your Aux 1 send is your monitor send, this is...
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    Can we work from the same schematic? I don't even...

    Can we work from the same schematic? I don't even see a bias adjust on the one I'm looking at? If you have - 50v+ on your pin 5, then it should be easy to figure out what's up.
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    Let's see, PT, OT, tone stack, bias adjust, aux...

    Let's see, PT, OT, tone stack, bias adjust, aux speaker switching jack, input jack, filter caps, preamp HV mod, nickb replacement tube board, standby switch, tubestore.com premium tube set. The man...
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    "The signal is present on all the taps whether...

    "The signal is present on all the taps whether you use the tap or not."

    Got it! Thank you.

    I know this is a lot of bother to add an aux speaker jack, but plug and play with a two tap OT is what...
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    "The 4 ohm tap is no longer used for speaker...

    "The 4 ohm tap is no longer used for speaker output, but it can still be used for NFB. "

    Ah, I see. So is the reverse OK as well, as in leaving NFB connected to the 8 ohm tap in the Blues Jr?...
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    Looking at the schematic in post #12, the grey...

    Looking at the schematic in post #12, the grey negative feedback wire is connected to the 4 ohm tap, it doesn't appear to be employed when using just the main speaker. Why is this the case? I am...
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    Part of the sound of a tape delay such as an...

    Part of the sound of a tape delay such as an Echoplex is that it does roll off the high end. There are digital delays that have settings that roll off the high end to simulate a tape delay sound. It...
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    It's the way of the world now. I have a good...

    It's the way of the world now. I have a good re-coner, but the cost of shipping now has made many things like this not cost effective. I don't like it, but more and more I am telling folks some of...
  22. I had a Vibrolux Reverb in here recently that had...

    I had a Vibrolux Reverb in here recently that had '66 and '65 OT and PT' date codes, '78 chassis serial no., '2008 ink stamp inside the chassis next to the PT, and '2008 choke and reverb codes. It...
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    Thanks Jazz, I suspected it was something along...

    Thanks Jazz, I suspected it was something along those lines. That's what I will do. Need to figure out the correct switching jack, preferably an open switchcraft type.

    This should do the trick....
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    This is a blues Jr, and I don't think (or see a...

    This is a blues Jr, and I don't think (or see a reason) why the main speaker would be disconnected. This guy is savvy and just wants to be able to add a cab in certain rooms. I know the switch will...
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    My idea is to put the switch between the jacks so...

    My idea is to put the switch between the jacks so that it points to the jack. One side points the main jack, and the other side points to the jack when you plug in an extension cab.
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    Dual tap OT quandry

    Customer brings me a 2016 Blues Jr and wants every mod known to man done to it. One of which is to install a David Allen OT he supplied with 4 and 8 ohm taps. He wants to be able to run just the...
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    Thanks guys!

    Thanks guys!
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    Blues Jr replacement tube board

    Can anyone direct me to the member here who sells the black Blues Jr. tube boards. I can't seem to find the link I had. I'd like to contact him directly because I am unsure of which one to order....
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