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  1. D

    Completed JohnH Attenuators?

    Silvertone 1482!!! Love mine, but it's hardly original. The filament secondary stopped working so I had to add a new transformer to the chassis. While I was in there, made a few other changes to tighten things up. Did you add a jack for the speaker or are those wires hard-wired to transformer...
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    Relic'd Guitars are for Posers

    I assembled my first partcaster with a relic'd finish body during the early covid lockdown. It is now my favorite guitar. I have a piano black telecaster that is stunning, but I got a scratch on it recently and now I'm pissed. Everytime I look at it I'm a little bummed. I don't even know how it...
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    Simple Attenuators - Design And Testing

    Being able to add a little sparkle for the late night heavy attenuation is a great feature. This may have to be included in my next build. I have the parts for another M2 and I'm pretty sure I have some 2uF caps in my drawer. I have a neighbor that wants one so I will give him my first M2 and...
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    Simple Attenuators - Design And Testing

    I haven't been keeping up with the entire thread much since I finished mine, but I was just thinking it would be nice to "boost" the volume of my amp as opposed to boosting the signal going into my amp and the footpedal idea seems like it will meet my needs. My amp is already pretty dirty...
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    Simple Attenuators - Design And Testing

    My M3 is at the rehearsal space so I will need to pick it up on Saturday. I have an audio interface and one of those electet microphones from Parts Express somewhere. I will see what I can figure out.
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    Simple Attenuators - Design And Testing

    I'm in the US so probably not cost efficient to send to DE. I built an M2 and an M3... it might be more effective to help me figure out how to make the measurements you did so that I can post them.
  7. D

    Simple Attenuators - Design And Testing

    Let me know if you want to measure my M3. I have a gig that I need it for in 2 weeks but after that I could send it to you as long as you promise to send it back.
  8. D

    Simple Attenuators - Design And Testing

    Am I understanding this correctly? I can plug an 8 ohm M2 into the 8 ohm output of my amp and then plug a 4 ohm load (two 8 ohm speakers in parallel) into the M2??? I thought the speaker load was part of the load the amplifier sees. It would certainly make things easier if all I had to do was...
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    Simple Attenuators - Design And Testing

    A little background... I have an amp with two speaker outputs - one for 8 ohms and the other for 4 ohms. It is wired so that if you plug in two 8 ohm speakers it will parallel the two cabinets for a 4 ohm load. Right now, I have an M2 and a M3 for 8 ohm loads. I have used both plugged into the...
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    Simple Attenuators - Design And Testing

    That is what I typed but it seems that the extra spaces are being collapsed in the HTML. I guess that is why you don't try to draw with text.
  11. D

    Simple Attenuators - Design And Testing

    One thing I found making my second attenuator is that you can minimize the number of separate wires required with some creative positioning of the resistors. For example you can connect groups of resistors like this: EDIT: Text layout removed because the spaces were not maintained. Refer to the...
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    Simple Attenuators - Design And Testing

    I will try to get some recordings soon. I also have a CaptorX and a Jet City attenuator (somewhere). The CaptorX works great for recording but the 20dB attenuator is too much for band practice. I generally use 10 or 14dB on the M2. I got the Jet City as a Christmas present years ago. I didn't...
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    Simple Attenuators - Design And Testing

    I built a third attenuator for a friend that does not want it (he has an Ox Box). I was thinking of listing it on Reverb with a link back to this thread for reference. Are there any rules against doing that?
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    Simple Attenuators - Design And Testing

    I have been using the attenuator with a Vox AC15 and a Silvertone 1482 and monitoring the heat but I have not found the enclosure or resistors to get warm at all so I have not included any ventilation holes. Perhaps if I had higher power amps then I might have a need but for my amps it doesn't...
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    Simple Attenuators - Design And Testing

    Here are the glamour shots of the M3. I think she's the sexiest attenuator so far. Love the way the push button switches (060-958) look and they are very smooth and have a solid feel when they are engaged. They require a 16mm hole, I had a 16.5mm drill bit. Worked out fine. The enclosure came...
  16. M3 Internal wiring

    M3 Internal wiring

    • dbishopbliss
    • Media item
    • Comments: 0
    • Category: Marshall Amps
  17. M3 Rear Panel

    M3 Rear Panel

    • dbishopbliss
    • Media item
    • Comments: 0
    • Category: Marshall Amps
  18. M3 Front Panel

    M3 Front Panel

    • dbishopbliss
    • Media item
    • Comments: 0
    • Category: Marshall Amps
  19. M3 Front Panel Close Up

    M3 Front Panel Close Up

    • dbishopbliss
    • Media item
    • Comments: 0
    • Category: Marshall Amps
  20. D

    Simple Attenuators - Design And Testing

    Very early and subjective thoughts... the levels for each position are pretty much the same when I switch back and forth between my M2 and M3. Its hard to say exactly because I have to turn off the amp, unplug it, etc. But I think this is basically expected. The bigger question is sound. They...

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