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Thread: AMP BUILDERS?

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    04.11.13 @ 12:43 AM
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    AMP BUILDERS?

    anyone here build amps. Anything? kits or straight up custom designs. i always wondered how a builder can shape the tone of the amp. i know it all is connected but what makes more highs and lows, or more mids.

    m hoping one day to build a small tweed kit from Mojo or Ceriatone.

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    10.26.16 @ 03:37 PM
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    Quote Originally Posted by Len75 View Post
    anyone here build amps. Anything? kits or straight up custom designs. i always wondered how a builder can shape the tone of the amp. i know it all is connected but what makes more highs and lows, or more mids.

    m hoping one day to build a small tweed kit from Mojo or Ceriatone.
    Hey man, I build amps. I've studied a TON about tube amps and have done clone building, repairs, and also some modifying and designing. I'm working on designing my 'dream' preamp right now actually...

    What specifically would you like to know? I can't guarantee that I know the answers to your questions, (the more you learn about amp design, the more stuff you discover that you don't know ) but I may have some answers for you.

    A tweed kit would be pretty straight forward as far as amps go -- build wise and 'tone shaping' wise. Now, if you want to dig into that stuff on a 5150 head.... there are more little tricks and mysteries at work in that amp than pretty much any I have seen!

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    there are a ton of amp builders out there. Its just amazing how many there are and they started comming out in the late 80s as far as i know. Its the thing these days.

    I have a question! i was thinking about replacing the transformer in my Hot Rod Deluxe Fender to a Mercury Magnetics tranny. Are you familiar with the HHD by Fender. Will this upgrade make my amp sound bore like a boutique amp. More dynamics? My ultimate blues amp(Im a blues player) would be something I can crank and turn down the volume to clean it up. There are alot of amps like that out there but but ther cost a fortune and are usually very heavy!(Fender Super Reverb). Anyway Im just looking for the ultimate light weight combo amp that has a great tone.

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    12.16.17 @ 06:52 PM
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    "Having an opinion that people disagree with doesn't make you a Douche, arguing with the people who disagree with your opinion and calling them stupid does!" -Me.

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    07.24.11 @ 04:36 PM
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    Quote Originally Posted by nobozos View Post
    that's a great link!

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    12.16.17 @ 06:52 PM
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    What I learned from that article is that you can probably cause more of an improvement to your tone from changing your output transformer than your type of tubes.

    I know alot of guys advocate switching from 6L6's to EL34's, but I think going with a high quality output transformer could do some real good.

    I would be interested to see what my 5150 combo would sound like if I:

    A) Switched out the 6L6's for EL34's
    B) Swithced out my stock output transformer for a Heyboer.
    C) Switched out my stock rectifier for a Tube rectifier
    D) Switched out my Sheffields with a G12H30 and Vintage 30

    Hmmm.
    "Having an opinion that people disagree with doesn't make you a Douche, arguing with the people who disagree with your opinion and calling them stupid does!" -Me.

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    Quote Originally Posted by nobozos View Post
    I would be interested to see what my 5150 combo would sound like if I:

    A) Switched out the 6L6's for EL34's
    B) Swithced out my stock output transformer for a Heyboer.
    C) Switched out my stock rectifier for a Tube rectifier
    D) Switched out my Sheffields with a G12H30 and Vintage 30

    Hmmm.
    A) Don't bother. I have heard from 3 EXTREMELY reliable techs/amp builders who have tried it, and they said it made it sound worse. With the way the 5150 is designed, the tone is really coming from the preamp, and the 6L6 power amp section is ingeniously designed to smooth out the preamp (which is why it only sounds really good at that high volume power amp sweet spot).
    Change to EL34's and you will not get that smoothing at all -- you'd get MUCH more power tube distortion. I suppose if you ran the thing on the rhythm channel with almost no gain and then cranked the power amp to 7-8, you might get a cool vintagey tone out of the amp, but only if the EL34s don't throw the amp's natural frequency response so far out of whack that the EQ can't fix it. You'd be getting a huge mid and upper mids boost with EL34s... so much so it might not sound good at all.

    B) The combo DOES have a DIFFERENT output transformer than the head. When I got my head and compared it to my combos, there was a huge difference in response, and I think a lot of it is because of the xformer difference. The one on the head is a massive chunk of metal. (A lot of the difference is also due to the fact that the head and combo are 2 pretty different amps, even though the circuitry is similar.)

    C) Tube rectifier could be cool. I know Torres engineering did that on a 5150 head, and they seemed to like it a lot. Some time I might add a tube rectifier and have a switch so you can go back to the original one too... just don't expect to get EVH sound any time soon with a tube rec.

    D) This is what I would recommend most. Although watch speaker wattages because the 5150 combo is capable of putting out 70-80+ watts, depending on the natural bias point of the tubes... so if you use 2 x 25watt greenbacks.... you're in trouble, etc. etc.

    I do know first hand that Peavey 12" Scorpions sound WONDERFUL with a 5150 combo. You're sound will drift away from the EVH sound... so make sure you're not trying to copy his tone exactly if you're thinking of switching.

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    Thanks,

    In my last 5150 Combo, I put in 2 Vintage 30s, and I really like it. I never pushed the volume over 8 as a result, but hell, you don't really ever have to because the amp's so damn loud.

    I've been fascinated with mixing a G12H30 and a Vintage 30 ever since I heard my old lead guitar player's Avatar cabinet with that combination. He was using a Straub Cantus head with the Avatar cabinet, which sounded absolutely awesome.

    The thing that I liked about the Vintage 30s was that it took off that sort of shrill high end that I've notice on the 5150 combo. To my ear anyway, it made the amp sound more toneful overall, and killed a little bit of the "buzzsaw" tone that I hear people complain about.
    "Having an opinion that people disagree with doesn't make you a Douche, arguing with the people who disagree with your opinion and calling them stupid does!" -Me.

 

 

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