Solid State Guitar Amp Forum | DIY Guitar Amplifiers

Solid State Amplifiers => Schematics and Layouts => Topic started by: gui_tarzan on June 10, 2023, 09:36:13 AM

Title: Switch box for SS amp - different speaker cabs?
Post by: gui_tarzan on June 10, 2023, 09:36:13 AM
I have a solid state guitar amp that I'd like to use different speaker cabs on to experiment with like you can do at a store with those switch racks. I did a quick search to see if there was a DIY option here but didn't see one. When I was a kid I would just put a bunch of jacks on a rotary switch (with radios) but after several decades of tube amp repair experience I know better. However, not having been immersed in the SS world I don't know the best way to handle this.

Any ideas?
Title: Re: Switch box for SS amp - different speaker cabs?
Post by: joecool85 on June 10, 2023, 02:15:59 PM
Quote from: gui_tarzan on June 10, 2023, 09:36:13 AMI have a solid state guitar amp that I'd like to use different speaker cabs on to experiment with like you can do at a store with those switch racks. I did a quick search to see if there was a DIY option here but didn't see one. When I was a kid I would just put a bunch of jacks on a rotary switch (with radios) but after several decades of tube amp repair experience I know better. However, not having been immersed in the SS world I don't know the best way to handle this.

Any ideas?

Honestly, solid state amps don't care if there is a load or not, so it's plenty safe to switch using spdt switches etc as long as they are rated for the current.
Title: Re: Switch box for SS amp - different speaker cabs?
Post by: gui_tarzan on June 11, 2023, 08:41:21 AM
True, but I am just being cautious.
Title: Re: Switch box for SS amp - different speaker cabs?
Post by: g1 on June 12, 2023, 01:37:42 PM
Are you wanting to switch 'on the fly'?
Then you might be concerned about whether the switch is 'make before break' or 'break before make'.
A 'make before break' type switch might allow parallel speaker combinations during switchover, which could allow too low a load impedance, or trigger protection circuits.

Other than that I don't see any issues, like joecool85 said above, solid-state amps are fine when there is no load.