Where is that tight low end?

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Count Robio

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Mar 26, 2006
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Hi all, I'm new here and have read all the posts seeking a goal. My "Dream" tone was achieved very early in life (about 14 years ago). I'd been playing for about 2 years and went to buy my first amp head and cab. I walked away with a Peavey Ultra 60 and a used Peavey cab with rear mounted Celestion g12k75's (more on this later). I remember how my pants would shake in the breeze from that amp.
Present day, after years off and many more years of playing and research I found a preamp that I love. The Rocktron Prophesy replaced all my crappy sim. gear (Pods and such). The orange glowing bottle reawakened many memories of tube tone, teeth and power. The Prophesy deserved more respect, I was running it into a Nady 900 (yuk). The sound was good, low end would dim the lights and then crap out! We rewired our studio and replaced the flourescent lights and power is no longer a problem. My tone was still a little shallow so I scoured the local stores and finally found a used Simul 395. The price was great and the player reviews were better. I bought it and was impressed for about 2 weeks. The tight lows, blowing my pants off, were present and I felt complete again. But....

My tight low end has vanished!! Many questions have surfaced now. Maybe through my own stupidity I have caused my dream to die. I want a new sounding dream with better tone, bigger teeth and more power.
Sorry for the long post guys but it 'll get longer when you answer I'm sure.
Questions:
1) The Simul 395 sounded great (maybe awesome if I'd had more time to dial it in) when I brought it home and screwed it in my rack. I placed it in my rack box with the Prophesy and placed it as a trophy atop my stack. Did I screw up? Is a rack's place not on top of a stack of earth shaking cabs? Retorical I know but could this damage the tubes or sockets or circuit boards? Was this the cause? It's now on the floor behind the cabs.
2) Channel A & B's rms lights are no longer flashing in sync. Channel A's lights are almost non-existent at times as B's are constant. Tubes in A are bad? Should I change them out or should I change both together? Change pre amp tubes as well? If so, change them to what? I was looking at Ruby tubes for all.
3) The "more on this later" question. Are cabs with rear mounted speakers inherently more bass defined or does it depend on the speakers and cab construction?
4) Does using the wah pedal with the right foot make your peepee permanently lean to the left? Should I alternate feet?

Ignore question 4 hahaha!!! I need some input.

Thanks after advance guys.
 
1. usually the cause of the loss of low end is bad tubes. probably in the power amp. since you got your power amp used you really should retube the whole thing.
2. no clue
3. see #2
4. i've been playing wahs for years and years and years and no peepee problems.

+Mike+
 
Thanx for the reply Phantom. The tubes will be replaced soon. I'll post my results then. Any suggestions on what tubes to goto?
 
What do you recommend for tubes?

I use channel a for all clean sounds with volume full.
I use channel b for all distorted sounds volume about 7.

Will my power amp break up better with the amp volume lower and pre volume higher?
Is it better to run the pre low and the amp high?

Puzzler for ya: I contact cleaned the amp today and moved it beside my cabs and again it's very dangerous. I'm puzzled now because every muted power chord shakes the soul except for low E. I pluggeg in my low B tuned Fernandez LTD. and all lower stuff rattled my teeth as well but open E5 is dead. I'm in love with my setup but why would one chord die? Is it my technique? I tried moving my palm forward until right above the bridge pick-up and it sounded better but not quite as loud as all else.
Would I do better putting a compressor between pre and amp to level volume (bring all other notes down and leave E5 where it is) or should I look elsewhere or even refine my technique?
 
My low end is back after installing new tubes!!
Also, I had a 16 ohm cab running at 8 ohms but now it runs parallel and all is good.
I did a test run today without the guitar in the P.A. and my teeth are back. The earth is shaking once again and I was so inspired that I played with the class A in channel 2 (heavy stuff for me).
Channel 2 in class A drops the power and slams the tubes sooo much sooner, it runs only two power tubes per side and still lets you run all 8 for clean stuff, Heaven is mine right now and from now on.
I've just ordered a stereo EQ to hone my sound even more and I know it'll be there shortly. Matbe I'll even post linx to my new recordings.
The 395 is now my dream amp.

Thanx guys!!!!!
 

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