anyone know hafler/bogner triple giant channel switching?

[mentoneman]

i am using one of the Rivera/GCS-1 loop/channel switching/midi pedal's 1/4" outputs,
connected to the TG's switching input via 1/4" stereo TRS cable,

to change between the 3 channels on the TG but it is kinda random how the channels switch.

I try to program every switch combination into the pedal:

0/0
1/0
0/1
1/1

but can't seem to line up the logic of the board's switching jack "states" with the channels 1 for 1, yet after several button presses through the various combinations i eventually get the preamp to switch across all channels.

anyone have experience with the TG swithching as i cannot find a manual for it? while i'm at it, any luck with midi programming?

 

[Dave L]

I never used the jacks for switching, but the MIDI is just a repeating pattern of PG numbers; PG1 is ch1, PG2 is ch2, PG3 is ch3 and then we´re back to ch1 with PG4.

 

[mentoneman]

no luck as bogner, hafler, and even voodoo amps that used to mod this preamp no longer support it.

has anyone here used it with midi switching?

 

[Dave L]

Yeah, as far as I could tell when I had one there´s no MIDI programming as such, it just switches according to the PG number it sees like in my post above.

 

[paulyc]

Just so I understand, you're using the 1/4" jacks, correct ?

 

[mentoneman]

Just so I understand, you're using the 1/4" jacks, correct ?

at the moment i am but i would try midi on it if i knew how to store program changes to it

i can hook up my gsc-1's switching jack to it with a 1/4" TRS cable

and if i toggle through all states of my gsc (+ +, + _, _ +, _ _)
i can eventually make the thing switch through all channels, but it does not correspond exactly 1:1 to any setting

i wish i could send this thing to peter diezel or bruce egnater to iron out the switch correctly and give her a steroid tweak while there because generally speaking it sounds really good in an 80s metal way but could use a 2017 guru facelift!

 

[mentoneman]

sorry dave L i didn't see your post before pauly,

so if i use midi, does that mean i just need to store a 1/2/3 at the pedal to send to the pre?

and is there a specific midi channel number or is it an omni thing?

 

[paulyc]

The 1/4" jacks are weird for sure, a TRS cable and a little wire with an alligator clip at each end will help you figure it out, it's been a LONG time since I had mine, but from what I remember one of the channels is "always" on and the switch only toggles to a different channel, meaning that if the other channel isn't on it defaults to the main one, the 3rd channel can be selected the "regular" way, I don't know a better way to describe it...sorry. You can try The Tone Dr in Texas for upgrades, Google him, guy's first name is Lance. I know the schematic shows 1/2 of an unused triode in there that would make a nice gain boost. Good luck with it.

EDIT: A 1/4" stereo cable and the alligator clip wire will show you...

 

[Dave L]

sorry dave L i didn't see your post before pauly,

so if i use midi, does that mean i just need to store a 1/2/3 at the pedal to send to the pre?

and is there a specific midi channel number or is it an omni thing?

You can select MIDI channel on the back, if I remember correctly, and yeah - it just switches in a predetermined way according to the program change that you send it. There´s no mapping or saving to a specific program number, program 1 is always the clean channel and so on.