Hoffman Amplifiers Tube Amplifier Forum
Amp Stuff => Tube Amp Building - Tweaks - Repairs => Topic started by: NannerPuddin on May 21, 2009, 07:44:01 am
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Does anyone have a layout for something like this? I am considering a new build and would like to free up some space for some mods maybe.
Thanks,
Doug
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Here's Hoffman's single channel AB763 w/reverb and no trem. The TDR amp on my website is the same thing, but a different layout.
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I think you're just chicken after you saw the thread and what happened to the last guy that wanted tremolo on his AB763. Chicken.
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Check out Sluckey's website and his SCH schematic. I have met Sluckey and had the privilege of hearing one of his amps. Great stuff and impressive tone and work. He's a good player too!
http://www.el34world.com/Forum/index.php?topic=726.0
http://home.comcast.net/~seluckey/tdr/tdr.htm
With respect, Tubenit
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Here's Hoffman's single channel AB763 w/reverb and no trem.
How would one adapt that layout to a rack-mount AB763 reverb channel pre-amp like this: http://www.sarnomusicsolutions.com/products/smsclassic.html , and discussed in this thread: http://rukind.com/forum/viewtopic.php?f=309&t=5792 ? I assume the answer is basically "only build part of it," but at which point do you stop, and how do you get to the output jack (which is just a simple 1/4" unbalanced output)? Also, what about incorporating the digital reverb into the layout?
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Personally, I don't why anybody in this day and age would want the Vibrato effect on their amplifier.
But that's me.
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Because you can...
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Personally, I don't why anybody in this day and age would want the Vibrato effect on their amplifier.
But that's me.
Because you like Creedence?
Seriously, a little tremolo at the right speed can be really sweet - especially when it's bias-vary tremolo. No, it may not have a place in multi-stage higher gain amps, but it's like Goldilock's porridge with a Blackface Fender circuit IMHO.
Chip
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"Personally, I don't why anybody in this day and age would want the Vibrato effect on their amplifier."
You might want to give a listen to Raising Sand.
Many great recordings have vibrato (tremolo) on the guitar parts. It can blend in very well, especially when not turned up all the way. It can create a sense of tension or add a pulse to a song which isn't obvious but really catches your ear. It is a classic (as in classical music) effect.
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You need trem if your going to do stuff like 'crimson and clover' :grin: Its a effect you don't use a lot but sounds cool on some stuff.
Regards,
Dyna
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It's a nice effect if you like blues .............. You can sure hear vibrato/tremolo with:
Paul Black and the FlipKings
Robert Cray
Anson Funderburg and the Rockets
Sonny Landreth (some of the time)
Ronnie Earl
and many many others. With respect, Tubenit
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:cry: My thread-bump has been derailed :cry:
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> at which point do you stop
Easy:
(http://i26.tinypic.com/2cd7be1.gif)
> Also, what about incorporating the digital reverb into the layout?
Now you are axing for a custom re-design. Have fun.
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Adze just great . . .
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Adze just great . . .
That's too much pun-ishment for me! :D
Chip
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The best way is to mod yourself eliminating the vibrato in the ab763 circuit which is fender's only true known flaw after the tweed era when eliminated two extra tubes that controlled the vibrato. It created extra noise in the pursuit of the the ultimate cleanliness and actually added great improvements in tonal response,harmonics,sustain and sparkle with way more clean headroom.
I saw a post here from a guy named Dan at FYD amps who appears to have used possible the AT7 tube to control true spring reverb pan but I'm he doesn't include tremolo due to the above fact. The shunted out tremolo jack is actually an amazing design I saw at wald electronics and have done myself. It also renders the rest of the amplification section dead of the circuit which now can be sent as the cleanest preamp signal sought out by thousands. I believe only the twin reverb and the blues junior from the ab763 use the cleanest voicing of the ab763 era.
There once was a hughes and kettner in the 90's called the blues master and in europe called the crunchmaster(very hard to find) which use similar voicing but used no reverb the guy in this vid has a nano verb ontop I believe. Hughes and Kettner Blues Master 2 (http://www.youtube.com/watch?v=Zd8sn97mmYw#)
Then sent out to a class A hifi stereo system like the McIntosh mc2100 and the mc2300 which are mono bridgeable. I built my own out of a conjunction of information with NOS RCA 7025's and an AT7 to handle my real fender spring tank and preamped out to my mcIntosh 2100 with an upgraded pair of 59000uf cans bigger than a king can of beer and bridged with a 2ohm tap fueling a custom built russian birch cab with 3 8ohm jbl e-120's. I'm not sure how FYD amps does it but by the Mercury magnetics transformer and mentioned ground lift it looks like the sweetest yet and hand wired. There's also sarnomusicsolutions who build a similar pre but they use a cheap set of 12ax7's,cheap transformer, and a solid state hall reverb.
I think the user loosechange here on this forum has the cream of the pop. I'd love to hear it in action especially with the signal out to a modded McIntosh into the best of the best JBL's.
Good topic though because the tremolo on the AB763 is where they cheaped out.
Hoffman you should make the ultimate pre amp with all this array of info. I bet your would be on top. let the others do the amplification and get away from the combo for a version.
Scroll down to post alembicization mods here. http://www.wald-electronics.com/preampmods.html (http://www.wald-electronics.com/preampmods.html) Saweeeet
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Wow. This thread is 2.5 years old. I'm surprised you found it. :grin:
Welcome aboard.
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pink floyd's tune "money" without guitar trem. and gutter sax just wouldn't be the same...
--pete
skip to 19:23
Pink Floyd - The Dark Side of the Moon (1973) [Full Album] (HD 1080p) (http://www.youtube.com/watch?v=328WhjAXpcs#ws)