Bottlehead Forum

Bottlehead Kits => Crack => Topic started by: DavidO on March 10, 2014, 03:07:26 PM

Title: Resistance Check
Post by: DavidO on March 10, 2014, 03:07:26 PM

Hi All..... I just finished building the amplifier and I am currently in the process of testing the resistance levels on all the terminals. Unfortunately, I am getting different readings on both the right and left center pin RCA inputs. Specifically 105 ohms on the left and 99 ohms on the right. I was wondering if anyone could help me debug the issue.

Kind Regards,

David

Title: Re: Right and Left Channel Different OHMs
Post by: fullheadofnothing on March 10, 2014, 03:15:29 PM

There is some variation between the two sides of your potentiometer. This is completely normal and not a problem.

Title: Resistance Check
Post by: DavidO on March 10, 2014, 04:15:43 PM

Thanks! That provides some reassurance. My powersupply resistance readings appear to be all wrong now:

1: Reading as I haven't tested (picks up as 1)
2: Same as 1
3: 0
4: 0
5: 0
6: Same as 1
7: Same as 1
8: 0
9: 1
10: 1
12: 0
13: Climbs to 270
14: 0
20: 0
22: 0
B3: 2.9
B6: 2.9
RCA - 99-105
Ground: 0

Title: Re: Resistance Check
Post by: Paul Birkeland on March 10, 2014, 05:33:26 PM

Quote from: DavidO on March 10, 2014, 04:15:43 PM

Thanks! That provides some reassurance. My powersupply resistance readings appear to be all wrong now:

1: Reading as I haven't tested (picks up as 1)
2: Same as 1
3: 0
4: 0
5: 0

Are these resistances? Terminal 2 and terminal 4 are wired together, therefore they cannot have different resistances.