Technik > Tech-Talk Amps

Harley Benton GA5 Tube Town mod II - some questions

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larsthestrat:
thanks for your reply.

I can see everything in the schematic, so I'm using the schematic for most of the things. Only the heater questions stays. I don't see that in the schematic (I think a technician would....), so I was using the pics for that.

I imagine you won't help me any further considering you're last post?

grtz lars

Dirk:

--- Zitat von: larsthestrat am  2.02.2009 15:22 ---I imagine you won't help me any further considering you're last post?

--- Ende Zitat ---
Well, I don't know what else I should write. Everything is in the schematic and the pin-numbers are listed on the datasheet for the 12AX7 and / or EL84 (marked with F = filament). It is absolutly simple, just like a bulb. Check it out closely again - also the datasheet !

Best regards, Dirk

larsthestrat:
thanks Dirk for your help, I figured it out already. Just drillng some holes and it should work.

larsthestrat:
Everything works properly! and it sounds nice! thanks for all the help.

connected pin 4/5 of the socket together and wired it to cap c12 and did the same with pin 9.

I still would like to perform some extra mods which I'm not certain if they can be performed after adding this extra gainstage. At this site (http://www.ultimate-guitar.com/forum/showthread.php?t=481701&page=6&pp=20) on page 6 of 15 call1800ksmyazz adds a pentatode/triode switch. He explains what he has done at his post on 1-10 at 8.55 pm (post 114). Is it possible to perform this mod having done the TTE mods?

I want the overdrive to sound a little bit more creamier/saturated) and I'm interested in doing this mod.

Any comments?

regards,

Lars

Dirk:
Hi,

I did not read the mentioned posting but basicly it is possible to add such a switch regardless if you modded the preamp or not.

Best regards, Dirk

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