Tube for an F1-X

[jazzyvee]

Hi David, i got the chance today and took the Send out from the F1-x into the power amp and the distortion is still the same regardless of the input sensitivity sensitivity settings which ar 32db, 26db and 1:4v the clip lights on the amp never flash, and the output is not loud even with the power amp channel knobs on full. Also the low and high outputs from the F1-x and the DI from the f1-x to the power amp input and again on all sensitivity sttings of power amp, plus post and pre on DI OUT and distortion is always the same and limited volume.
Any further suggestions, im out of ideas. 
cheers.

[jazzyvee]

i just got the F1-x back from an electronics expert who repairs high end audio and musical equipment. He said the switches on the jacks need cleaning and there were some cracked joints so he resoldered the board. Anyway got it home and tried is and its still the same distorted sound. Tried send out to power amp, full range out, Di pre and post to mixing desk, with and without Sf-2 in the send return loop and direct to power amp and each one sounds the same distorted signal. i have also plugged my bass directly into my power amp and that is a good clean signal. For comparisson I tried my other rack mounted F1-x rig and that is perfectly ok so there is something wrong with this one.  Any more suggestions as i will call the guy back to to orrow. if there is a schematic anywhere that i can take to help the service guy that might help him.

[lbpesq]

I just googled “Alembic F-1X schematic” and a few came up, along which a bunch of F-2B schematics.  Good luck getting it fixed.

Bill, tgo

[jazzyvee]

It is back with the electronics guy an i have also given him the one that is working fine so hopefully that and the drawing that Mica emailed me, i hope it can be sorted out.

[jazzyvee]

Sort of good news, I  got to speak to the electronics guy and he has traced the fault to the 300v side of the transformer that is breaking down and that is causing the distortion and lack of gain problem so i have fired off an email to Mics to see if i can get a replacement from alembic or an alternative we might be able to get over here in the UK. Fingers crossed.

[rv_bass]

That’s great you were able to pin point the problem source!  Hopefully you can get the part to fix it.