vintageHIWATTconvention.com

Posted: **Thu Jul 22, 2010 1:47 am**

Hello!

Ive heard about that fizzy sound that some late 70s DR504 can exhibit.
Im mostly using my amps clean with dirt boxes in front.
I get an annoying fizzy sound with my main dirt (CM Plexitone) thru my DR504 but not thru my Marshall.

Is it the same fizzy sound that the kit @ VHR could resolve ?

Posted: **Thu Jul 22, 2010 11:42 am**

If the pedal is driving the input of the amp (i.e., the level is much higher with the pedal on), this could be the culprit. Having the input volumes maxed -or- having them lower but driving the inputs hard will produce the same phenomenon in this circuit.

--mark

Posted: **Mon Aug 02, 2010 1:29 pm**

Mark,

If I buy the kit from VHR, does all instructions/layout are included ?

Posted: **Mon Aug 02, 2010 6:10 pm**

The directions are on hiwatt.org:
http://www.hiwatt.org/2_mod.html

--mark

vintageHIWATTconvention.com

fizzy sound (late 70s 504)

fizzy sound (late 70s 504)

Re: fizzy sound (late 70s 504)

Re: fizzy sound (late 70s 504)

Re: fizzy sound (late 70s 504)