New 80 Watt Wreck done!

[gahult]

Chassis source...now that's funny.

Gary

[Greg]

Gary, You kill me dude...LOL.

[M Fowler]

Allyn,

I have way too many projects going on and then you throw that kool 80watter of yours out there. I bet that amp really is a stadium amp.


I'm better off not knowing, thanks though. I better learn to build amps and then sell them or I will have a house full and shallow pocket book. When do the kits come out?

Mark

[Allynmey]

Gearhead, start with an express, add two tubes...make custom trannys, fiddle with the screens, Mess with the NFB loob, design and have fabricated a custom chassis, faceplates, and cabinet. Throw in a remote Bias knob, adjust the bias circuit entrance voltage, up the capacitance on the plates and screens, lower the resistance while doubling the wattage on the 1K sreen power node, add some bias points and voila'

wasn't that easy?
Maybe you should be a little more specific!!

Allyn

[Noel Grassy]

Allyn-san, seriously, how are you able to keep from leaving a fingerprint let alone little traces on your chassis during fab? Do you make your elves wear Tyvek booties & "bunny suits" when they clock in? I'm clearly in awe of your level of craftsmanship. Looks like I'll be down to the crossroads again this week since I'll never be able to sit at your feet.

Fuckin' sano as the hot rodder vernacular would exhort.

[drhulsey]

Gearhead, start with an express, add two tubes...make custom trannys, fiddle with the screens, Mess with the NFB loob, design and have fabricated a custom chassis, faceplates, and cabinet. Throw in a remote Bias knob, adjust the bias circuit entrance voltage, up the capacitance on the plates and screens, lower the resistance while doubling the wattage on the 1K sreen power node, add some bias points and voila'...

I read this, and instantly, before me I could see the schematic from input to power supply to output I quickly reached for a pencil and paper and when I looked back....POOF It was gone
What you might call an ephemeral epiphany

[Allynmey]

Allyn-san, seriously, how are you able to keep from leaving a fingerprint let alone little traces on your chassis during fab? Do you make your elves wear Tyvek booties & "bunny suits" when they clock in? I'm clearly in awe of your level of craftsmanship. Looks like I'll be down to the crossroads again this week since I'll never be able to sit at your feet.

Fuckin' sano as the hot rodder vernacular would exhort.

cameras hide a lot!

Honestly, not too much mojo at all. It really is an Express. The owner needed a louder Express! The rest was logical. Nothing to hide. If someone really wants to build one I'll tell!
I just don't have the ability or time to draw up a wiz-bang layout and schemo for the collection. Just look at an express layout and read the above post.

[Noel Grassy]

Yeah I thought you told the tale enough for someone to get their own going.

Back to my query, and I realize you are a busy individual. There are certain areas in your amps where one can't clean up after components and wiring have been installed. Strike that, short of using Q-tips, solvent and 180 grit or higher abrasives. The metalwork finish remains consistent throughout in
any of your products. You don't want to lob this doggy a bone? I respect your choice to keep your cards close to the vest.

[gearhead]

Gearhead, start with an express, add two tubes...make custom trannys, fiddle with the screens, Mess with the NFB loob, design and have fabricated a custom chassis, faceplates, and cabinet. Throw in a remote Bias knob, adjust the bias circuit entrance voltage, up the capacitance on the plates and screens, lower the resistance while doubling the wattage on the 1K sreen power node, add some bias points and voila'

wasn't that easy?
Maybe you should be a little more specific!!

Allyn

More specific? Well, let me work on it.

LOL.

Thanks for the tips.

All Hail Allyn Maximus Ampius !!!!

[Allynmey]

Yeah I thought you told the tale enough for someone to get their own going.

Back to my query, and I realize you are a busy individual. There are certain areas in your amps where one can't clean up after components and wiring have been installed. Strike that, short of using Q-tips, solvent and 180 grit or higher abrasives. The metalwork finish remains consistent throughout in
any of your products. You don't want to lob this doggy a bone? I respect your choice to keep your cards close to the vest.

Really...no secret. I don't clean up at all. I usually coat a chassis with masking tape when i'm drilling and just draw on the masking tape. When I'm finished, I take off the masking tape and assemble. These chassis seem to not get too fingerprinted up.

oh....one more thing...don't eat chicken wings when you build an amp!

[Allynmey]

I gave most of the specs to Ron Worley so he can make a drawing if he wants.

[drhulsey]

... fiddle with the screens, Mess with the NFB loop...

Allyn, when you're fiddlin' and tweakin', are you working off the assembled components in the chassis or off some type of prototyping platform

[M Fowler]

Oh heck I changed my mind I hope Ron or some-one Tim? will take and make some files on this. I down loaded all the pictures. I still have to get working on my Asteroid 60 before Barry starts yelling at me.

Mark

[Allynmey]

... fiddle with the screens, Mess with the NFB loop...

Allyn, when you're fiddlin' and tweakin', are you working off the assembled components in the chassis or off some type of prototyping platform

Quite honestly, I built it, fired it up, tubed it and it was done. I made only one change....the 220K entrance resistor to the bias circuit to 180K. I talked to a lot of people about changes to keep the same feel while, increasing the output. Remember we have a lot of talent here. I bounced ideas off of at least 6 or 7 guys before I went ahead and built it. Glad I did. I was under a deadline.

[Richie]

I don't know if anyone might want to try this,but i'll suggest it anyway. And give an explanation about it.
I built a somewhat express amp about 4 years ago, using a blackface dual showman [the one without reverb] This amp had a few differences,useing 4 x 6L6s , the fender choke. the preamp was an express build. I first used the express value resistors between the stages in the power section. The amp sounded great. But just for the heck of it, i switched it back to the standard fender values of the power section for this amp.
The difference or change was amazing. The touch response,and feedback was even better. Very noticeable.. the clean to sing was better,and note definition.
So.. i just wanted to throw this out there,and maybe someone might want to try it. Just an added something.
I remember taking this amp to a music store, for some friends to hear that worked there..
We played it in the back room,fairly large room, through a fender 4x12 cab.. had it on about 6 with a strat..
played it for a few minutes, and a guy came in from the front of the store and said we had to turn it down, as things were falling off the shelves..
It was very loud.
Now i know this amp used the blue caps, and CC resistors,fender trannys and a choke,and things like that, that are really not exactly parts a wreck used.
But even using those, not changing them..and just changing the values of resistors between the power stages..you could hear the difference.

As i said, just another option if someone wanted to try this. you could try both and see if you hear,and feel the same way i did..