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stax · July 3rd, 2009, 05:56 AM

A couple of pics of the Champ in question

[IMG]

I moved one of the transformers through 90 degrees and it made no difference, gonna try some additional shielded wire as recommended in link section 2.

Section 3 goes on to say
“Since the stock filtering values were selected when the standard line voltage was 105-110VAC, it is now commonly believed that the tweed era amps and some Blackface models are under filtered. We now enjoy AC line supplies of 120VAC in some areas in can actually be closer to 130VAC. In some, but not all cases, the stock filtering is not strong enough and results in an unacceptable level of 60 cycle hum.”

But us Champ users in the U.K. are on 230-240 ac; I wonder what the effect of that is??
Would be nice to sort out cos we’re in the studio soon and will be recording rhythm tracks live, with the Champ I can get the perfect sound without spilling over too much.
Stax

July 3rd, 2009, 05:56 AM	#14 (permalink)
stax Tele-Meister Join Date: Jul 2006 Location: Brentwood U.K. Age: 53 Posts: 407 9 Photos	A couple of pics of the Champ in question [IMG] I moved one of the transformers through 90 degrees and it made no difference, gonna try some additional shielded wire as recommended in link section 2. Section 3 goes on to say “Since the stock filtering values were selected when the standard line voltage was 105-110VAC, it is now commonly believed that the tweed era amps and some Blackface models are under filtered. We now enjoy AC line supplies of 120VAC in some areas in can actually be closer to 130VAC. In some, but not all cases, the stock filtering is not strong enough and results in an unacceptable level of 60 cycle hum.” But us Champ users in the U.K. are on 230-240 ac; I wonder what the effect of that is?? Would be nice to sort out cos we’re in the studio soon and will be recording rhythm tracks live, with the Champ I can get the perfect sound without spilling over too much. Stax