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Hoffman Amps Forum image Author Topic: Legacy VL100 Head 25watts MOD  (Read 2935 times)

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Offline Travis_W

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Legacy VL100 Head 25watts MOD
« on: December 23, 2010, 07:41:10 am »
I really appreciate your time and just need an opinion/or how to on something....

I have the first Legacy VL100 Head which only switches down to
50-watts...the new Legacy II will switch down to 25 watts.... :rolleyes:

I want to MOD my amp so it can switch down to 25watts?? or is this possible
with no mods?? Do I just need to switch out the switch...hahaha you know
what I mean.... :laugh:

Thank you for your valuable time as it greatly appreciated. :wink:

Hope this is not an old question....could not find it on this site anywhere... :sad:

Offline Frankenamp

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Re: Legacy VL100 Head 25watts MOD
« Reply #1 on: December 23, 2010, 09:31:31 am »
search this site for threads using the term: "Geezer Switch" That may come up with sumthin'...
This problem calls for a bigger hammer!

Offline VMS

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Re: Legacy VL100 Head 25watts MOD
« Reply #2 on: December 23, 2010, 10:05:44 am »
If you compare the schematics, you'll notice that the power switches work differently in Legacy and Legacy II.

http://www.carvinworld.com/crg/crg/schematics/VL100F.pdf

http://www.carvinworld.com/crg/crg/schematics/30-32201.pdf

In your amp the power switch turns off one pair of tubes.

In Legacy II the power switch reduces the supply voltage to phase inverter.

Manual says:
Quote
For early power tube saturation move this switch to 50 or 25 watts

but I think it should say early phase inverter tube saturation.  :smiley:


 


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