Hoffman Amplifiers Tube Amplifier Forum

Amp Stuff => Tube Amp Building - Tweaks - Repairs => Topic started by: joesatch on August 20, 2021, 01:38:59 pm

Title: trying to identify Transformers
Post by: joesatch on August 20, 2021, 01:38:59 pm

Googling the numbers doesn't yield much. These are the codes:

A 041752 and A 041754

EIA606-342

Amp is a Fender Concert Amp. Mainly what i'm looking for is the specs of it and the wire color code info. I have the schematics for the amp but they dont list specifically the specs on these

(https://i.ibb.co/74zWzdY/trans1.jpg)

(https://i.ibb.co/sjPF61j/trans2.jpg)

Title: Re: trying to identify Transformers
Post by: thetragichero on August 20, 2021, 03:42:48 pm

so this is a '93 concert, correct? same trasformer as hot rod deville. hammond 290vx is the equivalent for the power transformer. hammond 1750l(4 ohm), 1750m (2, 4, 8 ohm), and hammond 1760l (4, 8, and 16 ohm) all would work for output depending on impedance desire

color codes likely different between the hammond and stock shumacher. what do ya need to know?

do i see a crack in the wire insulation in one of your pictures?

Title: Re: trying to identify Transformers
Post by: sluckey on August 20, 2021, 04:50:37 pm

Look here...

     https://el34world.com/charts/Schematics/files/Fender/Fender_hotrod_deville.pdf

Title: Re: trying to identify Transformers
Post by: joesatch on August 21, 2021, 09:51:25 am

Excellent info thanks!  That's not a crack it's some glue substance, i wiped it off.