Bottlehead Forum

Bottlehead Kits => Crack => Topic started by: Colin on April 27, 2016, 11:15:34 PM

Title: Any circuit changes to put 12BH7/e80cc?
Post by: Colin on April 27, 2016, 11:15:34 PM

 I just put 12BH7 in bhc+sb, but the sound is only on the left side. Is this any changes on circuit to run both 12bh7 & e80cc? This changes can be rolling all tube(12au7/12bh7/e80cc) after that?

Regards,
Colin

Title: Re: Any circuit changes to put 12BH7/e80cc?
Post by: Paul Birkeland on April 28, 2016, 07:21:15 AM

Here's everything you need to know:

http://bottlehead.com/smf/index.php?topic=5989.0 (http://bottlehead.com/smf/index.php?topic=5989.0)

Title: Re: Any circuit changes to put 12BH7/e80cc?
Post by: Tom-s on April 28, 2016, 10:57:06 AM

Even without the circuit changes the right side should be playing normally when using a e80cc/12bh7 in crack+sb.
So i guess it's time to go back to the voltage measurements.

Title: Re: Any circuit changes to put 12BH7/e80cc?
Post by: Colin on May 13, 2016, 04:39:52 AM

After i moving(put over/slightly hanging) the bh7, the sound just normal back. Is this a problem with my tube socket?

Title: Re: Any circuit changes to put 12BH7/e80cc?
Post by: Paul Birkeland on May 16, 2016, 06:37:51 AM

You likely have a loose connection in your amplifier.