The Amp Garage

I don’t have my notes in front of me(on tour) but the 6v6s were right at 420 and all of the preamps were pretty much right in spec with the deluxe schematic. So thinking 185-190 on v1, etc. Nothing much higher or lower than spec. My bias was taken off the hv winding and I implemented Merlin’s bias ...

I don’t have the specs but don’t el84s need a good deal less gain to drive them then 6v6s? That would make sense.

add grid resistors downstream and reduce the values of the coupling caps to reduce low bass, esp. early in the circuit. see if the filtering is sufficient I messed a little bit with coupling caps, but preferred what the smaller cathode caps did in this circuit. There is a nice clear bass that I can...

Those changes are all the ones I implemented... Fixed a couple of things in the mark-up. Where did B+ land? Any changes to the dropping string? I don’t have my notes in front of me(on tour) but the 6v6s were right at 420 and all of the preamps were pretty much right in spec with the deluxe schemati...

I was thinking the same thing... I read through the thread and tried to capture the changes in the attached. Questions: Are the other filters 16u or 22u? Is the Reverb Dwell a 1M linear pot? Martin, You posted just as I was. Yes. Those changes are all the ones I implemented. Thanks for the markup. ...

Wondering if you have an updated final schematic? I have a similar amp nearing completion, seems to have more gain than I expected or want. I would be interested to see where you ended up. I didn’t do a schematic with my changes. I did, however, go through the amp following the instructions fender ...

It does sound nice with a 335! I have a ‘65 335 and a ‘55 Jr. Both sounded fantastic! The pre PI gain attenuation really is huge. I messed around with dumping gain in a couple of other places, but that is really the money spot. I also knocked the cathode bypass down to 5uF on the first two stages. A...

I thought I knew how to post video. DOn't have time to research right now, but will post them back up as soon as I do

Hey everyone. Well, i'm disappointed that I didn't win 'Tolexer of the year' but they said to keep on practicing. All kidding aside, this is the first time I've built and designed a whole thing. I tend to care more about sound than looks, but since this was for my kid, I tried to make it look as coo...

I have to fly out of town again this weekend. I will try to take some photos and post a clip or two, once I get everything buttoned up

I wanted to update everyone with the amp build. Once I get my faceplate back I will post some pics. This is the first project where I did everything. Made the cab. Tolexed it, etc. I'm really happy with the results. For the pre PI gain, after playing with the 250k pot for a while, I settled on 82k. ...

Awesome. In that case I will just change the tail, and it wouldn’t be an amp build for me without squealing leads on initial power up. Seems that no matter how closely I follow the the diagram, I always have to reverse the primary leads

This comes up all the time. You can keep the same feedback resistor on the same tap, and put the speaker on whichever one it matches, or, move the feedback resistor to the tap the speaker is on, and adjust it's value by (New Spkr Tap/Old Spkr Tap)^0.5 Given the secondary hookup for the 1620, you wi...

I bit on Ian's suggestion to try the Hammond OT, so waiting for that to arrive. The multiple taps open up some options for me, and I'm probably going to use a Celestion vintage 30 that I have. I love that amp for mid level amps like this. Anyway, it's a 16 ohm speaker. If I want to keep the feedback...