Mounting Reverb trans inside chassis?

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tubenit
Junior tube assistant
Posts: 44
(3/20/04 12:49 pm)
 Mounting Reverb trans inside chassis?
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 I am rebuilding a Dano Centurian and want to lose the goofy piezo transducer reverb for a reverb trans & reverb tank.Mounting space is a problem for the reverb trans. I have enough room inside the amp chassis but not outside the amp chassis.

Anyone know of a problem doing it that way?? The amp is quiet at idle now and I'm wondering if hum would be increased. I can use shielded wires on the output wires of the RT.

The OT is mounted inside the chassis also.PT is outside with tubes. My only other real option is mounting on the inside of the cabinet side which I would prefer not to do cause of the voltage (wires) to the primary.
The advice is appreciated!
 
Casey4s
Senior tube assistant
Posts: 146
(3/20/04 5:40 pm)
 Re: Mounting Reverb trans inside chassis?
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 Some of the more recent Fenders have done that very thing. I have an amp with the chikoe and reverb trans inside the chassis.


Casey4s
 
tubenit
Junior tube assistant
Posts: 45
(3/20/04 5:59 pm)
 Re: Mounting Reverb trans inside chassis?
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 Excellent, that is what I needed to hear (and was hoping to hear)! This amp is not quite as loud as my Princeton Rev (shares some similar features as my PR and a Silvertone 1472) but it sounds like a shrunk down Bassman to me. Lot's of blues tone and tweed growl. Cool amp. Rebuilding it for my son-in-law. THANKS!!! for the info. It helps! tubenit
 
Casey4s
Senior tube assistant
Posts: 147
(3/20/04 7:52 pm)
 Re: Mounting Reverb trans inside chassis?
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 That is why when I took my RedKnob super Sixty apart for new caps, I started parting it out and i'll never put it back as it was.

I prefer to put ALL of the Iron outside on DIY amps.

Here is some of my DIY amp stuff
 
tubenit
Junior tube assistant
Posts: 46
(3/20/04 11:08 pm)
 Re: Mounting Reverb trans inside chassis?
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 Wow!! I'm impressed! You are quite a craftsman. Beautiful work and meticulous. The Bassman looked to be in a walnut cabinet? Is that right? I built my acoustic (pre WWII Martin style) out of black walnut. Most of my electrics I make out of southern ash or mahoganey and top with flame/quilt maple. Been a hobby for 20 yrs now.The amp gig is new to me. So far, so good everything has sounded great, but I'd love to build a DIY at some point vs a rebuild. Ever thought about doing a "documentary"-style video/DVD of your work and marketing it? You obviously have a lot of talent. Thanks for sharing. It's appreciated! Photos were worth checking out and then some!
 
Casey4s
Senior tube assistant
Posts: 148
(3/21/04 12:47 pm)
 Re: Mounting Reverb trans inside chassis?
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 Thanks for the nice comments, I guess you can see I am a big promoter of DIY tube amps.

Yes, the Bassman IS black walnut, that was my 2'nd amp project. The cabinet on the BFPR on my page is a much better walnut cabinet.

If you want to build and you can read a schematic and handle a soldering iron. The rest is downhill.

As this thread has stated the are also a lot of kits if you want to start there.

I just wish I could build a real web site with DIY topics....

Good luck with all of your projects....




 
tubenit
Junior tube assistant
Posts: 47
(3/21/04 5:46 pm)
 Re: Mounting Reverb trans inside chassis?
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 Went back and finished looking at some more of your pictures. Your work is really excellent!
I do like the BFPR alot! Verrry nice!

I have a '73 PR and I replaced every cap and resistor in it so it will last me another 30 years. Really improved the sound too. Noticed you have a 1484. This Dano Centurian has that same piezo transducer reverb driven by a 6CG7 also. That is what I am losing in favor of a 12AX7 driven PR type spring reverb borrowed out of a Gibson Scout schematic ... hence the reverb trans question. Did you switch to a spring reverb with your 1484 or keep the original? I've got the schematic worked out (modified) to fit the Centurian now. If you switched yours out, I'd be curious how how you like it. Noticed your photo, I have a similar appearance but maybe a few yrs on you at 53?

Edited by: tubenit at: 3/22/04 9:58 pm
 
Casey4s
Senior tube assistant
Posts: 149
(3/22/04 8:47 pm)
 Re: Mounting Reverb trans inside chassis?
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 Tubenit,

I bought the 1484 brand new off the Sears Showroom floor in 1963.

The cheesey cabinet started to fall apart a few years ago, so I built new cabinets and tolexed everything.

My reverb still works "OK" but could be stronger. If I was to change it to a Fender type reverb, i'd just build a seperate circuit board. You'll need a transformer and 1 12AT7 and 1/2 of a 12AX7. In addition you'll need a spring pan, that might be a problem to find a good place to mount it. If it is a combo, you can mount everything (but the pan) in a 4x2x5" hobby box and mount it to the inside wall of the cabinet.

Go to my DIY page, and look for the file about a GA-15 Rebuild, that is how I added Fender reverb to that Gibson.

The photo you saw was Dec, 2003. It was a week before I had open Heart Surgery. I was 55 then, 56 now.




Casey4s
 
tubenit
Junior tube assistant
Posts: 48
(3/22/04 10:29 pm)
 Re: Mounting Reverb trans inside chassis?
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 Truly glad you're still around at 56! & I hope you'll continue to share your expertise for years to come (with good health) and pass it on! I taught my son how to build guitars and he made 2 PRS copies (as a personal gig) that are incredible! Rewarding to hand it down to others.

Interesting idea using the mounted hobby box for added circuitry.Hadn't thought about that before. I'll review your DIY page. The Gibson Scout uses one 12AX7 for both the driver and reverb with the reverb trans. My PR uses the 12AT7 plus a 1/2 12AX7. While the Gibson Scout GA-17RVT isn't quite as lush in reverb, it still sounds superb as a close 2nd. Using the one 12AX7, I can simply convert the current 6CG7 over and add a trans. I noticed the 1484 uses the tube and a half for driver/recovery? This Dano Cabinet is a pretty tight fit and my son-in-law wants to keep as much original on his Dano as feasible.

However, I've thought about adding a reverb to my VibroChamp and the hobby box is a great idea. Since I don't plan on parting with my gear, I don't worry about changing some vintage aspects as long as I can capture/keep the vintage tone. THANKS for the idea!!
I'm trying to preserve the remainder of my hearing so the
lower watt amps are helpful and overdrive at such lower volumes.
With respect, tubenit.
 
 
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