was the original TW chassis some thing KF fabricated or could the shell be purchased at some point if so by who? if not and its a home brew what material code did he use?
thank you
bud chassis
Moderators: pompeiisneaks, Colossal
Re: bud chassis
I think it's an of-the-shelf Hammond box, similar to mouser 546-1444-30 Discontinued, but probably available in small quantities from electronics liquidators.
https://tubeamparchive.com/viewtopic.ph ... trainwreck
https://tubeamparchive.com/viewtopic.ph ... trainwreck
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geetarpicker
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Re: bud chassis
BUD AC-425 off the shelf box. No longer in production, but maybe can be obtained by special order in quantity? The bottom plates are still available. I built both of my personal use clones on these, and found another one recently on ebay for $20 to save for a rainy day. For the most part they are made of "unobtainium" @ .050 thick, and are really hard to find anymore. Folks will dis the fragile nature of these, but my original is totally fine after 19 years. Also folks WILL fight me on this FOR SURE, but I think these make a difference in the tone and feel of the amp. Maybe a happy accident as Ken probably used them because they were cheap and easy to obtain at the time.
Let the battle begin...
[img:900:600]http://img.villagephotos.com/p/2005-10/ ... AC-425.jpg[/img]
Let the battle begin...
[img:900:600]http://img.villagephotos.com/p/2005-10/ ... AC-425.jpg[/img]
Last edited by geetarpicker on Fri Jun 13, 2008 9:24 pm, edited 1 time in total.
Re: bud chassis
Take my advice, folks. Don't argue with a man that gets the kind of tone Glen gets out of his clonesgeetarpicker wrote: ... Let the battle begin...
Tim
In case the NSA is listening, KMA!
In case the NSA is listening, KMA!
Re: bud chassis
thank you for the insight i'm so close to an all original I feel like I should make the quest to complete it i've been stock piling period correct TW parts for a years.
Re: bud chassis
I'd just buy one of Allyn's chassis. ymmv
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skyboltone
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Re: bud chassis
Go to your local precision sheet metal fab shop. Tell them what you want. It'll cost more but if yer after authenticity that's as close as you get.selloutrr wrote:thank you for the insight i'm so close to an all original I feel like I should make the quest to complete it i've been stock piling period correct TW parts for a years.
The Last of the World's Great Human Beings
Seek immediate medical attention if you suddenly go either deaf or blind.
If you put the Federal Government in charge of the Sahara Desert, in five years time there would be a shortage of sand.
Seek immediate medical attention if you suddenly go either deaf or blind.
If you put the Federal Government in charge of the Sahara Desert, in five years time there would be a shortage of sand.
Re: bud chassis
Glenn, OH Please!
Can you prove they sound different?
If I'm not mistaken the two amps you built do sound a little different from each other.
You'd have to build another amp with exactly the same parts save the chassis.
It's hardly a battle, but it's the best I can do. Is this the sort of thing you were after?
Can you prove they sound different?
If I'm not mistaken the two amps you built do sound a little different from each other.
You'd have to build another amp with exactly the same parts save the chassis.
It's hardly a battle, but it's the best I can do. Is this the sort of thing you were after?
Yours Sincerely
Mark Abbott
Mark Abbott
Re: bud chassis
drhulsey wrote:Take my advice, folks. Don't argue with a man that gets the kind of tone Glen gets out of his clonesgeetarpicker wrote: ... Let the battle begin...
Double yup!!
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geetarpicker
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Re: bud chassis
My two clones are only ever so slighly brighter than my original, and seem to be mellowing slightly with time. That said, all of the clones I've played that were built on thick chassis have been brighter than my original by quite a noticable amount.
There are plently of other variables, but I wonder if the thicker chassis could lead to brighter more forward amp. Heck the "KEN" amp was brighter with both the treble and presence OFF than my original is with the same knobs on 1/2. Maybe since I've played that amp Allyn has looked into it? In general most folks use the same caps and resistors I used, but I still hear many folks complaining about bright amps...
I just wonder if the greater conductivity of the thicker chassis could have some difference on the EQ of the amp?
Still, it might just be the transformers I used. What I need to do is compare my clones some day to another amp built with the same Pacifics.
There are plently of other variables, but I wonder if the thicker chassis could lead to brighter more forward amp. Heck the "KEN" amp was brighter with both the treble and presence OFF than my original is with the same knobs on 1/2. Maybe since I've played that amp Allyn has looked into it? In general most folks use the same caps and resistors I used, but I still hear many folks complaining about bright amps...
I just wonder if the greater conductivity of the thicker chassis could have some difference on the EQ of the amp?
Still, it might just be the transformers I used. What I need to do is compare my clones some day to another amp built with the same Pacifics.
Re: bud chassis
Pretty sure the Ken amp is useing the 5.2k tap..
Re: bud chassis
Dear Glen and Richie
I'm pretty sure the Ken amp was built using the 5.2K output transformer with M6 lam's. I was a little surprised at the time as I was certain that is wasn't the iron that went into an Express.
I have heard from Barry M lateey that he built an Express clone using period correct transformers, and he didn't complain about it being too bright.
Seriously, my thoughts are there are a lot more factors I'd consider ahead of chassis thickness, but of course I could be wrong.
I'm pretty sure the Ken amp was built using the 5.2K output transformer with M6 lam's. I was a little surprised at the time as I was certain that is wasn't the iron that went into an Express.
I have heard from Barry M lateey that he built an Express clone using period correct transformers, and he didn't complain about it being too bright.
Seriously, my thoughts are there are a lot more factors I'd consider ahead of chassis thickness, but of course I could be wrong.
Yours Sincerely
Mark Abbott
Mark Abbott
Re: bud chassis
I don't think it has anything to do with the chassis. People who spend most of their lives playing JTM45's and the like always think TW's are too bright. It is a lead amplifier made to cut through the mix....I think they do it well! I have two Bud chassis right here in the original plastic. I don't use them because I think they are flimsy. I don't want to put a piece of cut off broomstick between the trannys and the top and bottom cover to keep it from falling in on itself like Ken did either! I've played a few TW's and they sound the same as the ones I've built. I've A/B'd some of mine side by side with real ones. It's not that they sound exactly the same. No two wrecks I've heard do. They just have that sound. I've had the good fortune to play a wreck that Ken serviced a couple of months before he died. Ken considered it to be one of his best. I was shown how to bias a wreck by sound.
Remember, all these amps mellow over time. They become sweeter. You new amp won't be as warm as Glens 20 year old amp the first week. That just doesn't happen
I sold an amp to a friend that has a wreck and he has been playing it almost every day for a year. It has mellowed considerably and he would never part with it he says.
I have two Bud chassis right here in the original plastic. I don't use them because I think they are flimsy. I don't want to put a piece of cut off broomstick between the trannys and the top and bottom cover to keep it from falling in on itself like Ken did either! I've played a few TW's and they sound the same as the ones I've built. I've A/B'd some of mine side by side with real ones. It's not that they sound exactly the same. No two wrecks I've heard do. They just have that sound. I've had the good fortune to play a wreck that Ken serviced a couple of months before he died. Ken considered it to be one of his best. I was shown how to bias a wreck by sound.Remember, all these amps mellow over time. They become sweeter. You new amp won't be as warm as Glens 20 year old amp the first week. That just doesn't happen
I sold an amp to a friend that has a wreck and he has been playing it almost every day for a year. It has mellowed considerably and he would never part with it he says.
Re: bud chassis
Okay, so what accounts for the sweetening? Presumably some kind of component wear or drift? Is this something you can push towards with extended burn-in?
Bear
Bear
