The Amp Garage

Thanks, I'll look into the VTX series. I look at some pictures, it looks pretty good. Do you have any idea whether the chassis is at least 16 gauge thick? Comparing with a handy circuit board, I'd call it 0.062" or so and that's 16 Gauge. It's strong enough that 100W iron is screwed into threaded h...

Thanks for the replies, 10thTx what would changing the coupling caps to 0.02 do? DonMoose & Mark, Yeah going into this I was thinking that I would have to compromise. I use and play a lot more music that the top boost is more suited for so that side was my focus. Maybe if this turns out to be somew...

I'd say look at the transformer(s) to get an idea of how strong the chassis has to he to hold them. I'd also second Lord Preset's suggestion - the VTX series tend to go for short money, and (at least the one I'm playing in) the iron mounts flat to the outside - no giant well for the PT - so you have...

The Dumble clean works largely because the power amp is nearly HiFi with NFB. The Vox power amp is open loop - no NFB.

It will be a cool experiment, but I wonder how clean you'll be able to stay at equivalent volumes. Only one way to find out.

One option is to mount the chassis-mount sockets with screws coming UP through the chassis so you can get them out again with the board in place. Add legs to each socket pin made of long, bare solid-core wire pointing straight up. Use your solder sucker to clear the existing socket lead holes and ch...

Leo_Gnardo wrote:

xtian wrote:Where the moose live?

Somewhere near Wassamatta U? Or maybe here:

11 states and 14 cities, so far (including NH). Indianapolis at the moment.

I'm back to fiddling with my 'ToneLego' pipedream project, and am looking at some architectural ideas. The overall mission is to build myself a fleet of the 'canonical' amps (AB763 Deluxe Reverb, 5F6A Bassman, JTM45, MarkI/II/III, AC30TB, and so forth) in a single rack and provide them with a switch...

good info, just at that stage on a current build. Ok for parallel caps same idea, just parallel the R - I have 150k's on hand 3w should work out. For parallel caps, you only need one bleeder. The phrasing 'one resistor in parallel with each cap' is a little loose - it's one bleeder per each [1 or m...

You'll need a copy of MPLAB: http://www.microchip.com/pagehandler/en-us/family/mplabx/ and a programmer of some sort. Sparkfun has good prices and development boards: https://www.sparkfun.com/categories/6 https://www.sparkfun.com/categories/9 You'll also need to learn at least one language - C and P...

If the secondary is isolated from the line and grounded to the pedal ground, you _should_ be safe.

Look for UL and CE approvals.
Ideally you can find the datasheet and look for whether it's supposed to have passed HiPot or other insulation testing.

Yes, that's the deal! The only other issue is how much higher the filament voltage will be with 2 output tubes out as it could get high enough to shorten tube life and or make the preamp tubes sound brittle on the top end! If it where me I would leave in or get 2 weak output tubes and disconnect th...

The OT will handle to power just fine - the one thing there that you've doubled the impedance the primary faces (half the tubes), so you need to use the next step lower on the speaker side (plug an 8-ohm load into the 4-ohm tap). The PT will also be fine, but your voltages may be a bit high as they'...

Here's what sounds like a dumb question, but I was wondering ...

Does a touring US-based musician headed into EU-land have to bring only CE-compliant gear? I mean, if it's non-vintage stuff.

I've become curious about the guts of the Cyber line controls - the motors and pots, specifically. Does someone have handy a good gut shot and maybe a BOM?