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DIY Stompboxes => Building your own stompbox => Topic started by: ryani on June 03, 2004, 12:26:57 PM

Title: AC30 inputs
Post by: ryani on June 03, 2004, 12:26:57 PM
I have a question about the AC30 since I started looking at the schematic.
Why are there two inputs for each channel?  I can see that there are slight differences in the way they are wired, but I need someone to explain how they function differently.  I figured they were high and low or maybe just two identical inputs for more than one instrument, but this doesn't seem to be the case.  Thanks in advance for your help.
Ryan

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Title: AC30 inputs
Post by: Rodgre on June 03, 2004, 12:53:52 PM
without looking at a schematic, I will say that one input is low sensitivity. One input is full, and loud, the other is a bit duller and quieter. I suppose it's just another means of shaping the tone to your tastes.

It's fun to combine channels on the AC30, as the brilliant channel is not in phase with the vibrato channel, so you can get great washy phasey vibrato effects by combining them.

Roger
Title: AC30
Post by: StephenGiles on June 03, 2004, 03:43:48 PM
It was not uncommon for the whole band to plug into one AC30. I think the early ones had 4 inputs. This is in England of course in the early 60s. The former colonies had to make do with Fender amps at that time!
Title: AC30 inputs
Post by: RDV on June 03, 2004, 03:47:08 PM
My Supro "Super" has 3 inputs of which all 3 have been used at once before, with a whopping 5 watts through an 8" speaker.

Regards

RDV
Title: AC30 inputs
Post by: Ge_Whiz on June 04, 2004, 12:40:39 PM
QuoteMy Supro "Super" has 3 inputs of which all 3 have been used at once before, with a whopping 5 watts through an 8" speaker.

Cool! The bass player plays G# and A at the same time, and everybody gets tremelo!
Title: AC30 inputs
Post by: Boofhead on June 04, 2004, 07:56:48 PM
LOL!
Title: Re: AC30
Post by: lovekraft0 on June 05, 2004, 03:05:28 AM
Quote from: StephenGiles...This is in England of course in the early 60s. The former colonies had to make do with Fender amps at that time!
Only rich kids and country bands could afford Fenders! Silvertones, Oahu/Supro/Valcos, Kustoms and console radios were all we ever had (and we were grateful!).  :wink: