Some noise problems with my JCM 800 2204 50 watter

Lux84

New member
As i have a boost od pedal and boss ns-2 connected in front of the amp i have experienced a lot of hum, buzz and crawls when i tried to play hi gain stuff.. it was unbearable, i have to stay away playing the guitar with an amp.

So, then i put NS-2 in the active fx loop and go with that pattern into fx loop and into amp:

http://wisdomsguitar.com/wp-content/uploads/2011/10/ns2.png

After that, it seems that things are better.. no more hum, buzzing etc and i can stand more close to an amp. but, then became noticeable hiss annoying sound if i put the master volume more and more. so at six or eight was somehow bearable, but on 9 or even 10, that hissing sound appear again even if i got NS-2 set on full reduction. so here i have a problems, because as i increased the preamp volume below 5 of 10 it started hissing. and if i turn the treble or mids below 4 it starts hissing. so then i have put the master volume at 9 of 10 ( almost cranked full ), treble on about 2, presence on 2, and midle at about 3 of 4. bass on 10 ( cranked full). i hit than od booster at classic clean setting, and here i was.. the early kill em era metallica sounds. no problems with hiss at this setting. to mention my guitar is SG with SH6 Distortion on bridge and SH2 Jazz on neck. the speakers are two G12T-75's not really broken in well, but they have for about 20 hours of loud playing with that amp. that's it. my equipment.

So.. the rhythm sound was really good metal, deep lows, agressive early metallica era thrash sound. i used attenuator too, but only for about 5 decibels of cutting. the problem is, i can't get good tone for hi gain solos with that setup. it's too harsh.. i am looking for fast tapping legato stuff, and some higher frets soloing. so, i switch to neck pickup, lowering the tone down to 2. and i shoot the treble a bit down. the sound for solos was ok, until i started taping, and doing bands on really higher frets of a guitar. i think, when i started taping some legato stuff, the ns-2 almost eat all the sustain, so i set the decay a bit up.. and turn the tone of neck pickup a little bit up, at 4. everything ok, sustain improved, but on higher frets of a guitar the sound of my soloing was a bit too ice spikey, annoying for ears..

After all of that, i deicide to put back the ns-2 just in front the amp and connect it in pattern with od boost in front. terrible hum, and buzzing again tells me that this is not a realy good, or better option, than NS-2 in the loop. so i am putting it back in the loop again.

I don't know where is the problem, i know that unbroken speakers with ice spikey hi end are the problem, to put the treble and tone controls so down. but that hissing really botter me, because i can't have more gain which i want, just that early thrash metal sound. and as i turn the master volume to full, there is some much better low end response, than if i got it at about 6 ! and i want play legato stuff, with no eating sustain and no harshness on higher frets when i play hi gain metal solos.

So that's my experience today with my SG, and JCM 800 2204. I will report tommorow some news, because today i didn't really write down all the settings and when the amp starts giving me ****, so tommorow i will report the experiences much more in details. i want that amp sound the best for heavier metal stuff, is already sounds awesome for hard classic rock/ blues and for some serious thrash metal rhythms and riffs, but what i missed is sustain on heavy solos and less harsh sound on higher frets when i playing the heavy leads. and those hiss must go away. must be killed somehow:rocket:
 
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Re: Some noise problems with my JCM 800 2204 50 watter

I've had similar problems with my 6505+ head boosted with a tubescreamer.

You have to find out where the actual noise is being generated, it could be from the guitar, from the pedal or the amp itself. Sometimes using too much gain on the amp AND boosting it with an overdrive can push it over the edge and cause noise. I've learnt to use less gain on one or the other, and that's the trick.

As for noisegates, the X formation is to eliminate pre-amp noise and from the guitar, and I think from an OD pedal. I've got the ISP decimator G-string model that I run after my guitar but I use the gate's loop to run my tubescreamer so it cuts out any noise from that before it reaches the front of the amp.

I had my amp modded so the lead channel is quiet, so I don't need to use the gate in the FX loop.

Check your cabling, cheap ass cables can cause noise.

I've never turned my amp more than 3 so I can't tell if its that, that's causing the problem.
 
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