Started amp and found no power out at all thought it was tubes replaced all 7 tubes and did not help cheked all fuses all good checked all conections all look ok all tubes are on and hot and main transformer is only one that is getting hot i dont know if that is right or not ?? cant get a wiring diagram so i dont know what to check next. any help for me?? its a peavey butcher amp.
Your power transformer should not be getting hot. The signal is not passing to or through the output transformer.Check the speaker connections on the speaker side of the output transformer. Go to geofex.com and check the tube amp debug page.
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It sounds like you have your gain to high. best way to solve this is by turning the gain way down to - or lowest number , then turn everything on and upto the volume you desire, then slowly up the gain. also avoid using bass boost, I agree it sounds great but it puts strain on the amp and shortens life in the amp. with the bass boost off, you can adjust others (not the gain) to get bass.
make sure the power wire and the remote wire have voltage. at least 12 volts. make sure the ground wire is good and has a good solid ground. after that make sure the rca cables are getting signal from the radio. if you have a small speaker or tweeter you can touch the wires from the speaker to the rca cables and it should play music very quietly. meter the subs and make sure theyre ok and not shorted or bad. if all that checks out good.... the amp is probably bad. start with all the simple stuff and work youre way up. if the amp has good power and signal and good speakers then the only thing thats left is the amp. good luck
Firstly, you will want to set all options to a low pass, so the high frequencies are filtered away from the subs, avoiding damaging the voice coil. Start with the Gain of the amp about 3/4 of the way up, and all other knobs, such as the bass knob to the lowest setting. From there, test your subs for soujnd, and then change the gain and amount of bass for the sound you desire, since each person is different. I have my gain about 1/2 way up and the bass about 1/4 of the way up. If you have a crossover knob, set it to the highest frequency available, since the low pass will filter all the high frequencies out anyway.
As long as the gain is adjusted properly for the input, there should be no problems with the amp.
The head unit preamp output is probably a little low or there is too much voltage drop on the RCA's. It doesn't take much of a drop when you are working with such a low level to begin with. That's one reason that Alpine gives you the option to select an input level.
It's also possible that the input sensitivity of the Alpine is slightly high. Electronic components usually have a nominal value and their actual value can range up to 20% from that nominal. But again, you have a gain adjustment to insure that the amp is not overdriven. Make sure that it's set so there's no distortion and you should be OK.
Make sure your speaker wiring does not come close to the 12v power cable running for your amplifier. If your amplifier's 12v power cable runs on the drivers side of the vehicle, run your speaker cables on the passengers side and make sure your tweeters have a high pass filter to stop any pickup of engine sound (When you are driving you *WILL* notice it at high RPM. a HPF (High Pass Filter) will also stop those nasty hissing sounds on S's.
Sounds like you need to invest in a capacitor. Those are used when subs receive a bass spike. You just a need a 1 Farat Capacitor (1,000 watts) ran between the head unit and the amplfiier to fix your issue. Also, try reducing the volume gain to half gain and low pass frequency to half gain; this will increase your clarity and make your amp less hot. This may fix it without a capacitor. Also find out what amprage your alternator is. Your alternator may not be designed to run the amplifier. Most alternators are 200 amps now if they are gold plated.
a loose or corroded connection can cause this problem...do not overlook possible loose fuse holder...also look into remote control line...also check speaker line for a loose or shorted connection...a loose connection in any of these locations can cause a spike in the current drawn from the power supply... a bad speaker can play at low volume but short at high volume; if the flex wires from frame to cone on the speaker start to fail, it happens at high volume first, and sounds like a crackle, and gradually becomes present at lower levels; a voice coil can warp at high signal levels, causing it to short intermittently, in addition, you might check the cooling capability of the amp...i don't recall whether you have a fan on this amp...