modifying Fender Bandmaster - Ultra phonix mod

[m.alexander]

modifying this 1965 bandmanster with ultra-phonix mod, I used the TAG topics as a reference.

great open sound

[Matthews Guitars]

There can't be much life left in those original almost 60 year old Mallory dual capacitors. Change them out.

You put all that work in it, why tie its performance to 60 year old capacitors?

Nice as that amp may sound, I don't love to see such a clean original example being modified. Originality only happens once.

[sluckey]

There can't be much life left in those original almost 60 year old Mallory dual capacitors. Change them out.
You put all that work in it, why tie its performance to 60 year old capacitors?

You may be confusing the before and after pics.

[m.alexander]

I also don't like to modify original devices, but in this specific case, all the original components were kept for each necessary return to 100% stock.

I just restored a 1959 Fender twin Tweed high power 5F8-A, made it as original as possible

[Matthews Guitars]

Got it. Some of the photos (the "before" photos) were the only ones that loaded for me. This time around I see the newer ones.

I still prefer to see original untouched amps preserved even over fully reversible modifications.

But a Bandmaster isn't quite on the same level of collectibility as say a Tremolux, Vibroverb, or Princeton. I'd really hate to see some mod one of THOSE when Bandmasters can be found for the task.

[talbany]

There are quite a few different versions of the "Ultraphonix" mod. Which one did you do?

Tony

[m.alexander]

before , stock amp

[m.alexander]

after Mods

bandmaster ultra phonix post schematics in TAG

add master volume ken fischer , in normal channel jazz /rock and global feedback 4k7/ 22m

accent fixed 1uf for upper mids.

[m.alexander]

my reference for ultraphonix mod

[martin manning]

Excellent! There is a need for a pinned Ultraphonix topic in the files section. Maybe this would be a good start?

[Guy77]

Excellent! There is a need for a pinned Ultraphonix topic in the files section. Maybe this would be a good start?

Yes I agree. Great job Mark. How do you like the amp now after the mod?

Cheers

Guy

[pompeiisneaks]

Excellent! There is a need for a pinned Ultraphonix topic in the files section. Maybe this would be a good start?

Agreed, I've stickied this thread, great photos and summary @m.alexander!

~Phil

[m.alexander]

Excellent! There is a need for a pinned Ultraphonix topic in the files section. Maybe this would be a good start?

really I had to study a lot about it, because the information about ultra phonix mods is scattered and fragmented in several topics.

[m.alexander]

Excellent! There is a need for a pinned Ultraphonix topic in the files section. Maybe this would be a good start?

Yes I agree. Great job Mark. How do you like the amp now after the mod?

Cheers

Guy

thanks Buddy

after the mods the amp became much more interesting, more responsive and focused, the frequencies more in your face

he stock has an ok sound only, good but nothing special compared to other vintage blackface that I've had the pleasure of restoring


sorry my poor english

[m.alexander]

i mix 418p , 716p , 715p 800v , epcos pp and vishay mkt1813

for clean sounds 716p and 715p works fine

F&T and nichicon