Hoffman Amplifiers Tube Amplifier Forum

Amp Stuff => Tube Amp Building - Tweaks - Repairs => Topic started by: HARodgers on February 10, 2018, 11:57:01 am

Title: Blues Jr Conversion Line Out
Post by: HARodgers on February 10, 2018, 11:57:01 am

Hi,
I was just wondering if it was possible to use the second output jack on the blues junior conversion as a line out (to record into a USB audio interface) and if so, what resistor values I would need for this and which lugs I would connect the resistors to?

Also, is it possible to swap the "Meat" control for a presence control, and if so, how would I go about doing this?

Cheers in advance for any help

(Sorry if I've posted this is in the wrong place!)

Title: Re: Blues Jr Conversion Line Out
Post by: 2deaf on February 10, 2018, 06:31:28 pm

It sounds like you have two speaker jacks.  If so, attached is a typical line out arrangement.

The meat control can easily be converted to a presence control as attached.

Title: Re: Blues Jr Conversion Line Out
Post by: HARodgers on February 13, 2018, 05:11:19 pm

That is absolutely perfect - thankyou!

Would i need any extra resistors to replace the variable that would have been the meat control, or could I use a trimpot to have an internal meat control?

Title: Re: Blues Jr Conversion Line Out
Post by: 2deaf on February 13, 2018, 10:29:09 pm

Quote from: HARodgers on February 13, 2018, 05:11:19 pm

Would i need any extra resistors to replace the variable that would have been the meat control, or could I use a trimpot to have an internal meat control?

The meat control is gone because we swapped it for a presence control.