On my NAD 304 ampilfier, one channel is stuck at maximum gain, even with the volume knob all the way down. The other channel seems to work fine. I've checked the RCA connections, and tried a few different inputs (CD / Tape specifically). The problem seems to be in the preamp section, as if I connect an external preamp to the amp section, things seem to work OK. Is this something reasonably common such that I'd know where to look for a DIY fix, or is the amp ready for the bin?
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Re: Gain on one channel stuck at max
Check for a dry solder joint on one end of the vol control(earthy end). This will be causing your problem. The pot itself may actually be faulty to. You can always get stuff like that, just got to identify it. Check soldering to the pot first.
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Depends on the input you are using. First you need to calibrate signal coming in with the Gain attenuation knob. Setting this prior to adjusting your channel output volume should calibrate the signal so when the channel volume knob is set to 0 and the Main volume is set to 0, the meters should indicate a true 0 reading.Not setting the Gain correctly will affect this. On the 1/4" channel inputs, you have less adjustment and may have to adjust the item you are plugging in from its source. If you are having issues with high gain, chances are it could be a cable issue, or something from the source itself.
Simple: connect the headphones out (3.5mm jack) to the input jack of your fender (6.3 jack). By doing this you will loose one channel so you better generate a mono signal inside your computer before. Electrically this is no problem, nothing will be damaged.
Turn the gain and volume knobs down and apply a signal from your Mac. Gently increase gain and volume. Et voila wonderful mono sound through a guitar amp
Your amp has two channels - "normal" and "drive." When you are on the normal channel, the "volume" knob controls your gain. In the "drive" channel, the drive knob controls your gain. In both channels, the "master" knob limits how loud the amp will get.
Most likely, you are on the drive channel, so the volume knob will have no effect. Try pushing the "channel select" switch. You should notice the channel indicator lamp (next to the drive knob) turn off. When it is off, you are in the normal mode. Yellow = drive, and red = "more drive."
Experiment with different settings to get a variety of tones.
To get the most out of this amp, try reading the manual, available online here: http://www.fender.com/support/manuals/pdfs/manuals_elec/guitarpdf/Hot_Rod_Deluxe.pdf
There are 2 channels, Which means there are 2 sets of knobs ... One for clean and one for crunch. Start out with a low master volume and set up the crunch, Then the clen and switch between the 2 and make adjustments until they match volume wise ... Then turn the master up.
Only the right channel had a sound,the left channel is mute, whatever adjustment you did and whatever balancing you done nothigs happen,even you interchange the speakers. The problem is in the power amp. The STK IC there is busted already, it's better to change it with a new one so the performance become normal again.
Hi there - did you ever solve the problem? I have one of these and it only seems to have a gain of about 5. As long as you're taking your output from 'Pre Out' 1 or 2, the volume control should adjust from no output to max.
1) If you bridge on a non bridged amp your sound will be horrible as they sine waves comming out of the two teminals will be different... I suggest removing the bridge.
2) The gain knob is to adjust when the amp will reach its max volume with respect to the sterio;s volume.
3) the LP filter is a Low Pass filter and its purpose is to eliminate the higher frequencies that do not sound all the well when played over subwoofers.