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Author Topic: Shaping your tone 'without' a soldering iron.  (Read 21140 times)
Dumbleseeker
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« Reply #15 on: August 15, 2008, 10:29:15 PM »
Hey guys sorry to ask a dumb question but do I change all 3 of the preamp tubes?
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bobgoblin
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« Reply #16 on: August 15, 2008, 10:37:08 PM »
Dumbleseeker, I wouldn't say its necessary, however, if you decide to invest in one or two NOS tubes, why not go the whole way, right.  If you're buying new tubes, EH, JJs, etc, nah, just buy the specific tube(s) you need & leave the other(s) in there.

If you're replacing power tubes, however, yeah, you should replace them in pairs (or quartets) with matched set(s). 

Best of luck!
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Dumbleseeker
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« Reply #17 on: August 16, 2008, 12:41:32 AM »

Thanks for the advice. I ordered my tubes from www.torresengineering.com. I will let everyone know how it turns out. Smiley
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Dumbleseeker
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« Reply #18 on: August 18, 2008, 07:31:02 PM »
O.K. here is an update. I put in 3 new EH 12AY7 and now have excellent clean tones and more headroom with my strat. Now I getting closer to the sound I am looking for.  Cool Do I really gain much from snipping the cap on the volume control?
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Bluestone
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« Reply #19 on: August 19, 2008, 05:21:28 AM »
Did you have to take the gain trimmer up a touch to compensate for the 12AY7 in V2..?
I clipped one side of the cap on the master just as a trial.. and do think it helps to smooth the tone further especially at lower volume settings.
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Dumbleseeker
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« Reply #20 on: August 19, 2008, 01:20:12 PM »
O.k.- I think I will snip the cap on the volume as I have read several people say they have experienced smoothier tone at lower volumes. I have not  moved the trimmer yet. What do you have yours set at? 
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Bluestone
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« Reply #21 on: August 20, 2008, 05:28:41 AM »
with a 12AY7 it`s set at about 11 o`clock position,.. but that`s with PAF type humbuckers. Single coils may need a touch more. It all depends on weather you think you`re getting the right kind of tone and gain.
A 12AY7 in V1 position didn`t have quite enough juice for me,. that`s why i went with the LPS 12AX7.  More of a rounder, vintage type tone from the LPS over the JJ12AX7.
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Dumbleseeker
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« Reply #22 on: August 20, 2008, 11:58:32 AM »
Great Information! I think I am just going to have to play it more to decide on the gain. I have read alot of information on 6L6 tubes. Their seem to be a wide array to choose from. The JJ's I got from Nik sound good-just not sure if there is something better? Some people seem to think that the preamp tubes make the most difference and that the power tubes are only noticable at higher volumes. What are your thoughts?
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Jimmyd
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« Reply #23 on: August 20, 2008, 04:46:54 PM »
Preamp tubes make all the difference in the world tonewise.  Not so much with the different brands of 6L6's.  There is a difference, but you really hear it experimenting with different preamp tubes.

Jim
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bobgoblin
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« Reply #24 on: August 20, 2008, 06:38:31 PM »
Quick question, when setting the OD trimmer, which side are you looking at?  I was looking towards the inputs (the side with the arrow), but read somewhere on here that it was actually the other side that was 'correct'.  Thanks!
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Dumbleseeker
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« Reply #25 on: August 20, 2008, 08:13:26 PM »
This is from the Layout Thread.

 Re: Overtone Layout
« Reply #30 on: June 04, 2008, 03:58:05 PM » 

--------------------------------------------------------------------------------

Quote from: jerrydyer on June 04, 2008, 11:04:41 AM
The two trimmers on the main board get left alone? thanx 


The right hand trimmer on the main board is the one that controls the OD channel level and is the one you'll experiment with most. The PI trimmer (left hand end of main board) is set and forget The trimmer on the satellite board that contains the FET, controls the level for that input. Most owners don't use the FET input much but you might want to just set it to a sensible level and leave it, I have mine at 9 o'clock.
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bobgoblin
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« Reply #26 on: August 20, 2008, 10:10:13 PM »
Right, I've read that whole thread, however:

http://ceriatoneforum.com/index.php?topic=552.msg4245#msg4245

In this thread, bluesfenderman says that we should be adjusting the trimmer from the OTHER SIDE (the trimmer is on the LEFT hand side of the board if you're looking at the chassis with the knobs closest to you). 

So, I ask again, first, can we all agree that if we're looking at the chassis with the knobs closest to us, that the "middle" trimmer, the left-most being the FET, and the right-most being the PI, is the OD trimmer?  If so, which side should we be looking at for adjustment purposes?  I look at the side with the arrow, at least one person disagrees with that.

Thanks!
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bobgoblin
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« Reply #27 on: August 21, 2008, 01:46:42 AM »
Well, upon closer inspection, the arrow is visible on both sides of the trimmer (a fact that was lost on me due to the low light I was working in).

In either case, if I'm standing in front of the chassis, with the knobs closest to me, would I adjust the trimmer as if turning it clockwise turns towards the knobs, or as if turning it clockwise turns towards the back of the amp?
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hywelg
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« Reply #28 on: August 21, 2008, 08:22:03 AM »
Standing with the chassis open upwards, with the knobs facing you the OD trimmer is second from the left (ie the middle, well it''l be in the middle which ever way you look at it!!). Now you have to adjust it with the screwdriver entering from the right, but read the clock face FROM the left.

If you use a long electricians insulated screwdriver and are very careful you can do this while its on and someone is playing a guitar through it. Turning the trimmer all the way to either end will tell you which is the 'low' end ie 7 o'clock. Once you understand which is the low end you can adjust it looking from either side. But be careful.
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bobgoblin
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« Reply #29 on: August 21, 2008, 02:28:14 PM »
Thanks, Hywelg!
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