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Messages - Jack1962

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46
Amplifier Discussion / Re: Fender red knob amps -
« on: April 11, 2011, 12:12:33 PM »
Yeah they sound alot better once you change out the red knobs  :lmao:
I heard that rumor about them when they came out , and that's all it was and is. if you setup you amp correctly , 90%   it will sound fine.
 
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47
Amplifier Discussion / Re: Please help me identify this amp
« on: April 11, 2011, 11:59:34 AM »
YEah JM , I still have 1 of those myself  :lmao:

48
Amplifier Discussion / Re: Watts vs Volume (db)
« on: April 11, 2011, 11:56:59 AM »
Great 1st post indeed Sound-Pro
however , there are many way's to get more volume out of your amp , the easiest way is to add a more efficient speaker , or multiple speakers that works fairly well.
Joecool what 100 watt amp do you have that has only 1 speaker , to compare to a 10 watt .
my 100 watt amps blow away ANY 10 watt amp with as many speakers as you want to attach to the 10 watt amp with my 100 watt am on 1 lol lol lol

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49
The Newcomer's Forum / Re: AMP only plays when I strum really hard.
« on: January 29, 2011, 07:13:05 AM »
Did this amp work before you replaced the pots? other than being scratchy. if so either those are the wrong pots or perhaps while you where soldering them in you got a little bit of solder on a solder pad next to on of the pots. when you say you plugged into a poweramp did you input a signal to the amp your having trouble with to see if the preamp had a output thru the power amp?

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50
Amplifier Discussion / Re: Those good ole amps from highschool
« on: November 19, 2010, 06:05:59 AM »
Well from my high school day's , they did make solid state device's  :lmao:

Check out the mosvalve it's a great amp or the Lab L5

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51
Caps are cheap if you think a cap is possible bad replace it , like Enzo said when someone is paying you to repair a amp or anything else , it is cheaper for you and the customer to just replace any cap that you may think is defective , if a cap is leaking tar , bulging or has any other visable defect replace it , it may work now , but that cap will go out.

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52
The Newcomer's Forum / Re: Need of schematics
« on: November 10, 2010, 06:46:37 AM »
you can use Hi Fi speakers in lower wattage amp projects fairly well , however once you start pushing in the neighborhood of 20 watts then it's time to invest in at least 1 good MI speaker.

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53
The Newcomer's Forum / Re: Tubes do not warm up. No sound out of amp.
« on: November 10, 2010, 06:41:54 AM »
always turn off power and remove fuse's and check with a ohm meter, to address a the impedance question , if the impedance of your speakers drops below 2 ohms on a tube amp yes it will damage your amp (the output transformer) . Now back to the tubes not warming up , after you have good fuse's installed and you have voltage on the fuse's on the preamp tubes check pins 4, 5, 9 , these are the pin's that connect to the heaters on the tubes if you don't have a heater voltage your amp will not work.

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54
I agree , IMHO you would be better off to reengineer the reverb drive circuit for more reasons than one , I have played thru this amp when it was relatively new, the reverb wasn't all that great. I couldn't find a diagram for this amp but if it's the same reverb unit installed in the 1474 then it's a relatively simple modification.

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55
Amplifier Discussion / Re: Peavey MX 112 (VTX series)
« on: October 12, 2010, 07:36:32 PM »
I recieved the schematic today , the problem getting it was that this was colombus day weekend  :lmao:
when they told me that I about fell out laughing.

Thanks for your help Enzo

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56
Amplifier Discussion / Re: Peavey MX 112 (VTX series)
« on: October 09, 2010, 07:42:10 AM »
I called and email , I called and gave them the model and serial numbers they sent me the schematic for the 112MX crossover lol emailed and havn't recieved any reply.

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57
Amplifier Discussion / Re: Debbuging solid state amplifiers?
« on: October 08, 2010, 10:47:28 AM »
Enzo is right use the effect loop to check for quality of signal if it is ok there the go on to the master volume and power amp section of the amp.

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58
try schematic heaven I think I saw it there

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59
Amplifier Discussion / Peavey MX 112 (VTX series)
« on: October 08, 2010, 10:31:06 AM »
does anyone here have a schematic for this amp?

60
Amplifier Discussion / Re: Gibson G105 Help
« on: July 24, 2010, 07:51:52 AM »
you can find a replacement tank for it at Antique Electronic Supply : http://www.tubesandmore.com

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