enoch
New Member
Posts: 2
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Post by enoch on Aug 23, 2008 12:00:03 GMT -7
Hi: I'm a newbie to the Forum. Its been a treat to read through the many informative threads here, and thanks to all for sharing so much.
I'm very happy with my (new to me) used Carmen Ghia. Its a beautiful design. I was wondering why it doesn't use a choke in the power supply input instead of the 500 ohm 10 watt resistor.
I know the Hammond reverb amp didn't have one and its chassis was pretty small, but wouldn't a choke filtering the DC supply to the screen grids result in less hum and less sag on the hard chords? I'm sure the answer is some version of "it doesn't need it", but I'm curious about the design features of using the resistor instead of a choke.
Regards,
Enoch
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Deleted
Deleted Member
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Post by Deleted on Aug 23, 2008 15:59:01 GMT -7
Not to hijack the thread but welcome to the forum Enoch.
Doug
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Post by bustertheboy on Aug 23, 2008 16:46:19 GMT -7
Hi Enoch- I have a Z-28 and a Ghia. Of the two the Ghia (with Bendix rectifier) has less obvious sag and hum than the 28 which has the choke. The idea with the Ghia was the simplest design possible. Brett
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enoch
New Member
Posts: 2
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Post by enoch on Aug 27, 2008 10:11:55 GMT -7
Thanks for the welcome Doug, this is a great site.
I'm not making a complaint about the CG, mine sounds sweet. Maybe I should ask why the Z-28 requires a choke but the CG can get by with a 10 watt resistor? I'm sure the design goal for the CG was to get a terrific tone. A choke wouldn't have added much to the selling price. I'm hoping for some insight to a technical question that I don't understand.
Thanks,
Enoch
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