The Amp Garage

If you wanted to make a cool DI you would need to tap off and isolate it before the master volume. and give it a dedicated master volume. or if you just wanted the clean "pure" instrument tap off the input. The problem with tapping it off before a MV (if there IS one...) is that it doesn't capture ...

I'm guessing he does a lot of POD and digital amp modeling recording so getting the line out into the box makes his software easier to process. You might also want to introduce him to a nice ribbon microphone and vintage preamp :wink: Interesting conclusions you've jumped to... No POD - not even cl...

Well, that's not what I asked... While I personally prefer a DI box, and love my H&K Red Box Pro, the customer wants a recording out. He records at home (has a damn-nice studio too, for a 'hobby' studio :D ). He uses the recording out on a couple of his other amps and likes the approach, so I'll bui...

Hi, solder-sniffers! Looking for a little advice on the hookup of a simple recording out control/jack. I plan to to put one on an amp I'm building for a customer. I'm just going to copy the simple configuration that Mesa uses on their amps - a resistor and a pot in series coming off the hot lead to ...

Heck - just get on the phone and call them and ask them if they're actually the Cliff brand. They're pretty cool with questions like that.

The problem with the metal tape is the adhesive is not conductive... Keep looking. There are MANY metal tape sizes and brands that have fully-conductive adhesive. For example, the shielding tape that StewMac sells for shielding guitar control cavities is VERY sticky, AND conducts VERY well. Love it...

Richie wrote:... seen some amps even use screen...

Vintage Fenders for example...

Good for you! Congrats. I had a similar experience with a batch of 6V6s several years ago. I'm friends with Jim of Southbay and Scumback/bag fame, and one or the other of us found a BIG stash of old 6V6s somewhere, which we jointly purchased and split between us. GREAT stash of a variety of old 6V6s...

Yeah, sure no problem I think. I looked at both in Tubecad w/B+=400V, 47K/51K plate resistors, balance about the same I think, better than 10%, get about 260V plate, input and output impedance about the same, at 3mA current. "good enough for rock n' roll"! Bias points are quite different, 12AT7 is ...

6CG7 would make a reasonable PI I think... more like a 12AT7. I have a Silvertone 1484 in the shop again to sort out, and it uses a 6CG7 for the PI... And it's missing... And... I don't have one in my tube drawer. Just for the sake of trouble-shooting the amp for signal continuity, is a 12AT7 reaso...

I don't think in a [anything] it really matters which way you put them in. The stripe may or may not tell you which end is what anyway. you would have to test them. If you think it matters then clip them in and switch it around a few times to determine the best sound. It's simple: It doesn't matter...

Yes that may be the issue. The first thing I would do is straighten out the lead dress. There is simply too much wire in there. The grid wires, the OT wires in and out,etc. There are many avenues for crosstalk and ac induction problems in that amp. Personally, I don't see how that amp was ever very...

Thanks, solderstain. I've pulled V1 and the hum is still there. I've replaced nearly everything that touches V2 - since I think that's the spot - but with no luck. BTW, the 4 input jacks are metal as I changed them years ago because I like that look better than the plastic ones. This will be short,...

Love the cob webs!

Damn - that wiring reminds me of the inside of crystal radio I build in Electric Shop back in the 8th grade! (That was back in the 1960s, btw...)

I come from the "a picture is worth a thousand words" school... Since the hum goes away when you pull preamp tubes, that pretty-much localizes the problem. I doubt it's anything to do with the input jacks, since they're not metal, or shouldn't be - those Marshalls originally came with the plastic Cl...