Dr Z Carmen Ghia build from a Hammond Reverb amp!!

tonewheelkev · 30th August 2010, 08:57 PM

Hoping to build a Dr Z 'Carmen Ghia' type amp from existing Hammond reverb amp.

...Does anyone have experience of this, and perhaps might offer any tips or guidance?

Thanks in advance
Kev/Leeds/UK

Miniwatt · 30th August 2010, 09:36 PM

Whazzat, a Dr Z 'Carmen Ghia' ?

DigitalJunkie · 30th August 2010, 09:48 PM

Isn't that a car that was made by VW?

Dr. Z Amplification | Carmen Ghia

tonewheelkev · 30th August 2010, 10:51 PM

Any wisdoms here!?

TheGimp · 31st August 2010, 01:08 AM

You like Fender or Marshall sound? Or other?

Get thee a tonestack per your preferred amp.

EL34 PP stage is pretty straightforward.

Input 12AX7

Driver 5751.

(or is the 5751 better for the front end?)

Your preferred speaker Celestion, Jensen, MOD? (Celestion Greenback would be mine but I'm that way.).

What sound are you trying to make?

magicsamin · 31st August 2010, 04:06 AM

If I'm not mistaken, the Carmen Ghia used the Hammond AO-35 reverb power amp
http://www.captain-foldback.com/Hamm...atics/AO35.JPG
as its core, with a pre-amp added to that. I havn't seen one for quite a while, but I think the 5751 is in the front end of it.
If you make one from scratch, be advised R22 and C13 need to be rather robust, 1600V cap. & 10W res., which WILL run hot during overdrive conditions!
I have one of 'em in the basement, waiting to be mod'ed, too many toys, so little time.

tonewheelkev · 31st August 2010, 11:10 PM

....probably more of a fender sound!
What is this tonestack thing??
....have a couple of Jensen alnico 12's...from a Hammond PR40 cab
...have tried 'em and they sound great to me.
TBH...I'm not sure how to describe the sound I want.....but like the clean sound of vintage Fenders......some creamy OD would be nice too

Mosquito · 1st September 2010, 11:04 AM

Deep down inside It's a Hammond?

30th August 2010, 08:57 PM	#1
tonewheelkev diyAudio Member Join Date: Aug 2010 Location: Leeds UK	Dr Z Carmen Ghia build from a Hammond Reverb amp!! Hoping to build a Dr Z 'Carmen Ghia' type amp from existing Hammond reverb amp. ...Does anyone have experience of this, and perhaps might offer any tips or guidance? Thanks in advance Kev/Leeds/UK

30th August 2010, 10:51 PM	#4
tonewheelkev diyAudio Member Join Date: Aug 2010 Location: Leeds UK	....Trying again!!!.... Any wisdoms here!?

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30th August 2010, 09:36 PM	#2
Miniwatt diyAudio Member Join Date: Nov 2004 Location: Den Haag	Whazzat, a Dr Z 'Carmen Ghia' ?

30th August 2010, 09:48 PM	#3
DigitalJunkie diyAudio Member Join Date: Apr 2003 Location: Portland,Oregon Blog Entries: 4	Isn't that a car that was made by VW? Dr. Z Amplification \| Carmen Ghia

31st August 2010, 01:08 AM	#5
TheGimp diyAudio Member Join Date: Aug 2009 Location: Johnson City, TN	You like Fender or Marshall sound? Or other? Get thee a tonestack per your preferred amp. EL34 PP stage is pretty straightforward. Input 12AX7 Driver 5751. (or is the 5751 better for the front end?) Your preferred speaker Celestion, Jensen, MOD? (Celestion Greenback would be mine but I'm that way.). What sound are you trying to make?

31st August 2010, 04:06 AM	#6
magicsamin diyAudio Member Join Date: Jun 2007	If I'm not mistaken, the Carmen Ghia used the Hammond AO-35 reverb power amp http://www.captain-foldback.com/Hamm...atics/AO35.JPG as its core, with a pre-amp added to that. I havn't seen one for quite a while, but I think the 5751 is in the front end of it. If you make one from scratch, be advised R22 and C13 need to be rather robust, 1600V cap. & 10W res., which WILL run hot during overdrive conditions! I have one of 'em in the basement, waiting to be mod'ed, too many toys, so little time.

31st August 2010, 11:10 PM	#7
tonewheelkev diyAudio Member Join Date: Aug 2010 Location: Leeds UK	....probably more of a fender sound! What is this tonestack thing?? ....have a couple of Jensen alnico 12's...from a Hammond PR40 cab ...have tried 'em and they sound great to me. TBH...I'm not sure how to describe the sound I want.....but like the clean sound of vintage Fenders......some creamy OD would be nice too

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