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Hoffman Amps Forum image Author Topic: Re: Hoffman Fender Blues Junior Conversion  (Read 5740 times)

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Offline sebasto13

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Re: Hoffman Fender Blues Junior Conversion
« on: March 04, 2015, 02:20:18 am »
the mercury for blues junior FBLJR-P/E and mercury output transformer FBLJR-O work with the hoffman bj conversion ?

What is the shoke transformer ? It is important for the sound ?

Thx you.
« Last Edit: March 04, 2015, 05:07:05 am by sebasto13 »

Offline EL34

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Re: Hoffman Fender Blues Junior Conversion
« Reply #1 on: March 04, 2015, 06:52:38 am »
I don't know anything about those transformers
maybe someone else can chime in


A choke smooths out current changes in the amp just like a filter cap smooths out voltage changes in the amp

Offline sluckey

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Re: Hoffman Fender Blues Junior Conversion
« Reply #2 on: March 04, 2015, 07:11:33 am »
The MM iron should be a drop in replacement and will work just fine.
A schematic, layout, and hi-rez pics are very useful for troubleshooting your amp. Don't wait to be asked. JUST DO IT!

Offline sebasto13

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Re: Hoffman Fender Blues Junior Conversion
« Reply #3 on: March 04, 2015, 03:01:07 pm »
- The mercury transformers for blues junior are used to replace those origins by better.
I'm surprised you did not know them.
Here the cabling:
http://mercurymagnetics.com/pages/catalog/sub/ProPrimaryDef.pdf


- What is the "mm iron" ?
« Last Edit: March 04, 2015, 03:07:06 pm by sebasto13 »

Offline sluckey

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Re: Hoffman Fender Blues Junior Conversion
« Reply #4 on: March 04, 2015, 03:43:20 pm »
"MM iron" = Mercury Magnetics transformers.
A schematic, layout, and hi-rez pics are very useful for troubleshooting your amp. Don't wait to be asked. JUST DO IT!

Offline EL34

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Re: Hoffman Fender Blues Junior Conversion
« Reply #5 on: March 04, 2015, 05:24:35 pm »
- The mercury transformers for blues junior are used to replace those origins by better.
I'm surprised you did not know them.

I have many things going on all day long and no time to surf web sites and try and remember what every transformer is for by every manufacturer

I depend on my forum members to help others here
That's why you were sent here and that's how you got a good answer from Sluckey





Offline sebasto13

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Hoffman Fender Blues Junior Conversion
« Reply #6 on: March 06, 2015, 05:10:14 am »
add a headphone/line out for direct record is possible on your conversion ?
« Last Edit: March 06, 2015, 06:50:49 am by EL34 »

Offline EL34

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Hoffman Fender Blues Junior Conversion
« Reply #7 on: March 06, 2015, 06:45:51 am »
The guys here may have a way to do that
I never mess with line outs


they don't sound very good to me

« Last Edit: March 06, 2015, 06:50:39 am by EL34 »

Offline afireworship

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Re: Hoffman Fender Blues Junior Conversion
« Reply #8 on: March 09, 2015, 11:39:08 am »
I'm no expert but I just did this build myself and I used the Mercury choke and OT. They both work great in this build. I didn't compare stock to Mercury with this build but on the factory fender circuit they made a huge difference in tone and clarity!

 


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