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Post subject: WHINE - supersonic 22
Posted: Sat Dec 01, 2012 5:41 pm
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FOR THE LIFE OF ME.....i do not know how this happened. The "dude" at the board stole a signal from the rear of my amp...i was not paying attention..looking at the ladies or crap instead of watching intently as anyone does "stuff" behind your amp on a non professional stage. (ever miss a tube or more after a break?) so said professional left the freaking phantom power on, he plugged into my FX out (i will be installing a THAT corp outsmarts and appropriate balanced connector...that said,

WHAT THE HECK EVER HAPPENED TO LEO'S EDICT "the amps must be easy to repair" Like you have done 6 hours in a Bakersfield bar on a Saturday night Twin Reverb at 8 with JBL chrome domes and a fresh bigsby equipped 69 tele and it's time to clear the bar....a polka is chosen as the appropriate tune to rid the club of the patrons.... everyone is beered up and off ya go...40 miles from the truck stop you ate at (just outside of Bakersfield on hwy99) you decide to pullover the bus and fix your damn twin reverb for tomorrow's gig in Hag's country.....so you pull that beast over and open up the twin replace the Plate resistors...puke...put it all back together slam some RCA 6L6's back in and the driver whisks you off to red bluff....no big deal...

flash forward from 1968.....i'm sitting herein my own lab....fixing the damn amp cuz the "dude" blew the cap and theTL072....i have a ton....

just try to do it.....


just saying....


if i was bat crap nuts, faced on sammy's nectar... completely equipped with parts and every Weller ever made.....still could not fix the thing before the next day...or sober for that matter.


killer little amp...but damn i am using up beer to get to that critter.....NEXT remove the wires from the tube sockets to get the board to flip.....

so take notice on what's going on behind your back...and let's make the amps a tad easier to FIX THEM....thanks (love this amp) 8)

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Post subject: Re: WHINE - supersonic 22
Posted: Sat Dec 01, 2012 9:57 pm
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Two facts of modern life:

1. Amps stopped being easy to fix when Fender changed from hand wired eyelet boards to PCBs.
2. PCBs are cheaper to make.

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Post subject: Re: WHINE - supersonic 22
Posted: Sat Dec 01, 2012 10:50 pm
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And if I may:

3.) Not ALL PCB board units are bad.

http://www.audionote.eu/index.php?page= ... =dac31bal#

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Post subject: Re: WHINE - supersonic 22
Posted: Sat Dec 01, 2012 11:09 pm
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Soldano SLO 100:

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Post subject: Re: WHINE - supersonic 22
Posted: Sun Dec 02, 2012 5:24 am
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Yep - Modern mass manufacturing processes do less hand work on amps so that we have to end up doing more when the time arises.

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Post subject: Re: WHINE - supersonic 22
Posted: Sun Dec 02, 2012 7:26 am
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AaronK wrote:
Yep - Modern mass manufacturing processes do less hand work on amps so that we have to end up doing more when the time arises.


Yes, but if they didn't, your Super Sonic would cost at least twice what it does now if not more. It wouldn't necessarily be any more reliable or sound any better either.

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Post subject: Re: WHINE - supersonic 22
Posted: Sun Dec 02, 2012 8:38 am
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Yup...

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Post subject: Re: WHINE - supersonic 22
Posted: Sun Dec 02, 2012 8:54 am
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http://www.aikenamps.com/PCBorPTP.htm

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Post subject: Re: WHINE - supersonic 22
Posted: Sun Dec 02, 2012 5:03 pm
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shimmilou wrote:
Yup...

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shimmilou wrote:
Yup...

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BUUUUUUURP!

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Post subject: Re: WHINE - supersonic 22
Posted: Sun Dec 02, 2012 11:12 pm
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So the sound man blew up your amp by doing things to it he shouldn't have and you're mad at the amp?

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Post subject: Re: WHINE - supersonic 22
Posted: Mon Dec 03, 2012 5:08 am
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[/quote]Yes, but if they didn't, your Super Sonic would cost at least twice what it does now if not more. It wouldn't necessarily be any more reliable or sound any better either.[/quote]

And some of the cool modern features would not have necessarly gone into the amp too. But sometimes I ask myself if I could get this amp in the handwired version, would I pay the extra money for it. Why would I need to?. But true, reliability can be an issue on even the best of amps.

Modern day electronic goods are far overpriced compared to their respective manufacturing costs. I wonder if we would even care for reliability if were able to buy these amps at the manufactured price.

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Post subject: Re: WHINE - supersonic 22
Posted: Mon Dec 03, 2012 2:43 pm
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Powdered Toast Man wrote:
So the sound man blew up your amp by doing things to it he shouldn't have and you're mad at the amp?


nope i love the amp.....but not the maintainability of it....it was useless after he did that...well back to it today i flipped the board only two tube sockets had to be partially un-soldered...so now i suck off the 72's and roll in the 2072's and see if i get oscillation and instability if not...good 'nuff i'm going to beef the local filtering just cuz

I have some 883B TL072's i can pop back in...NUTS

in 88 i paid for an air force 6 unit only build....883 NE5534..in 88 they cost over 80 bucks each..and they look great... not plastic cases here for sure....

still have about 30 of them they spec out at the top of the heap

anyway measurements will be taken, i shall report.....

BTW i love the amp...on clean mode with the amp dimed...it is sweet....and the gain channel is very versatile...i like a nice slight on the edge of crunch then lean into it...it is sweet...the whole series the ones i have played sound pretty darn good even with GT tubes...my GT6l6GC...went in about 40 minis.....

have some old 5881's in it i got back in the early 70's from a B-52.....(they were gone for servo amps but for a twin reverb in guam...worked fine then and now -and they didn't blow up

bought a brand new deluxe reverb...6v6 (GT) blew in about 20 minis...went red hot...musta had a loose grid... :shock: 8)

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Post subject: Re: WHINE - supersonic 22
Posted: Mon Dec 03, 2012 3:09 pm
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Just curious, but Fender amps have a 5 year warranty and the SS 22 has only been around a year or so. Why not just take it in instead of messing around with it yourself?

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Post subject: Re: WHINE - supersonic 22
Posted: Mon Dec 03, 2012 5:44 pm
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Powdered Toast Man wrote:
Just curious, but Fender amps have a 5 year warranty and the SS 22 has only been around a year or so. Why not just take it in instead of messing around with it yourself?


tons of time, better equipped than most n the puget sound area...AES member PHD EE...blah blah....i like burning my hands and pissing and moaning about crap i can't do a thing about and Rane on my parade.


got the 2072's in...can't wait t see what happens...

no i do all my own stuff when i can ...since '65 - then i can $@!&* at myself and that's a lot of fun...requires beer :mrgreen:

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Post subject: Re: WHINE - supersonic 22
Posted: Mon Dec 03, 2012 6:19 pm
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rollo, not sure if this is the issue. As I haven't worked on an SS-22. But, in other soild-state loaded front end/tube output amps imbalance or instability between the gain stages and the output can lead to fried tubes. Often the front ends are set very hot bias or offset, to get max distortion.

It's a tricky proposition to set the offset in these amps. Maybe, best to take this puppy to a tech that has worked on these hybrid amps.

Schemo:

http://support.fender.com/schematics/gu ... ematic.pdf

Offset adjustments:

http://www.analog.com/static/imported-f ... MT-037.pdf


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