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I've had a Studio Caliber that I picked up used over 10 years ago and have been using it off and on as my main amp since. Given it's age is there anything I should do to it maintenance-wise such as new caps? I've of course changed tubes and have the bias correct (or as correct as you can with...

Yes, it still has the original Vintage Black Shadow VS-12.

You are correct sir. It was the second from the right when looking in the back, if I remember correctly. Mine is also an early one, pre DC-2 on front, pre-contour. I find the lead channel works much better with some guitars than others (better with my single coil guitars than humbuckers). A...

So I bum a ride to the gig with my drummer so that my wife can drive separately and arrive later and not have to sit around during set up, sound check,etc. (Plus now she doesn't have to worry about a designated driver.) So he opens the back of his minivan (some items have shifted during...

Thanks for the help. I've got the 25/30 pair in now and band practice tomorrow. We'll see (hear?) how it goes. I was real worried about those high currents too. I feel much better now. :)

I added the 470K in parallel with the 120K (got 100K when I measure across the combo). I then retested the EIs and got the expected ~-14mA: EI (set 78) was I=51mA V=365V now I=36mA V=389V was I=46mA V=365V now I=32mA V=390V EI (set 104) was I=44mA V=374V now I=30mA V=399V was I=40mA V=374V...

Any suggestion on wattage rating? I doubt I have any thing higher than 1/2watt laying around so I will have to order. The schematic I have on it doesn't show wattage ratings.

It's been a while since I chimed in on this so here's the latest: The EIs got rid of the crackling and have been working fine for gigs and practices for the last few months. I am still worried about the high currents, as everyone else who posted seems to be as well. I'm going to order a few...

I only had the crackling happen at practice on Wed. I didn't play it at all on Thurs and on Fri I just did the bias measurements without playing. Then I put the EIs with the 40/44 bias numbers in and played for a bit and it sounded wonderful. It shimmered with great harmonics and, at least for...

So I have a Mesa Studio Caliber (DC-2) that I have been using for years as my main gigging amp and at practice the other day it started making a crackling noise. The crackling is intermittent, random and with about 10-20 seconds between. It seems to happen regardless of if I'm playing or holding...

The amp is plenty loud and the stage volume is probably more than I would like sometimes. I don't want to punish my own ears. Any sound man is going to want to mic the amps to balance out the FOH mix. If you just crank the amps then the mix in the crowd is terrible. Some people only hear...

Cool, I will have to check that out. Thanks.

Where you getting the ground loop hum on the Record out, but not the speaker?

My old roommate was from Columbia (PA). Small world. I was hoping there was something wrong with my Recording out, I guess it looks like a fairly common issue. Playing larger places I always mic because of the noise. In smaller places where we're just trying to balance the room I can get...

It's not ridiculously noisy, but it is noticeable and definitely more noisy than mic'ing it. I actually grew about about an hour east/south from Honey Brook, in Parkside, closer to Philly. Which way from Honey brook are you?

Even though I thought using the Recording out would be a great way to get a signal to the mixer, I've always ended up mic'ing my Studio Caliber because the Record out is noisier than mic'ing the speaker. Is this normal? thanks

I've used the Head Switcher on and off for the past 5+ years with out any problems. There is no significant speaker pop. I say significant because I don't have it in front of me to check, but I used it at gigs and switched amp heads in the middle of songs and I'm sue if it popped I would have...

Crap, I have a file called cabswitch in that folder that has a file size of zero kb. It's obviously corrupt and didn't upload. I'll look to see if I can find a good copy of it.

Here ya go: http://www.4shared.com/file/64199566/616c91e7/HeadSwitch.html

I found the Aiken Head Switcher schematic if any one is interested.