Hoffman Amplifiers Tube Amplifier Forum

Amp Stuff => Tube Amp Building - Tweaks - Repairs => Topic started by: idsnowdog on February 14, 2024, 05:11:36 pm

Title: Dumble input jack wiring?
Post by: idsnowdog on February 14, 2024, 05:11:36 pm

I built a MOSFET boost for a project.  The amp has two inputs and one of the jacks is supposed to be a switching type to turn it on when plugged into one of the inputs.  However,  I don't see a schematic showing how to wire open frame jacks. 

Title: Re: Dumble input jack wiring?
Post by: idsnowdog on February 14, 2024, 05:24:54 pm

I see the wiring for enclosed jacks but not open jacks.  This is the booster I built which is taken from the Nana schematic.

Title: Re: Dumble input jack wiring?
Post by: WimWalther on February 14, 2024, 06:11:32 pm

The open-frame aka wafer-style jacks don't have the same switch configuration as do the plastic type.

They are not direct substitutes.

Title: Re: Dumble input jack wiring?
Post by: acheld on February 15, 2024, 10:10:58 am

This might help.

Added:  Green goes to FET bd input
            Blue is the FET signal out

Title: Re: Dumble input jack wiring?
Post by: idsnowdog on February 15, 2024, 11:03:52 am

Thanks that clarifies many things.