Tube octave down?

[earthtonesaudio]

Why not?

Valvecaster into one of these perhaps (scroll down for tube version):
http://webpages.charter.net/dawill/tmoranwms/Elec_Flipflop.html

[hday]

Very interesting idea. Not sure if the tube would help the tone at all, but if someone drafted up a layout, I'd build one in a heartbeat.

[R.G.]

Why not indeed? Somewhere in the minutae with which I escaped A Major Computer Company lies a quad flipflop. Yep, four dual-triode tubes with associated R/C/diodes on a slim metal frame that plugged into a larger chunk of computer. Dates back to about 1960 I think.

You can do a much simpler tube flipflop than that. A flipflop is really only two inverters set up to drive one another.  I think there's a tube flipflop circuit in my copy of Halliday and Resnick.

[Pedal love]

Some basic tube flip flops are modeled here:

http://www.electronicpeasant.com/circuits/flipflo1.gif

http://www.electronicpeasant.com/circuits/flipflo2.gif

[earthtonesaudio]

Very interesting idea. Not sure if the tube would help the tone at all, but if someone drafted up a layout, I'd build one in a heartbeat.

No idea what the tone would be like.  Probably bad... but the bragging rights would be worth it.

[Pedal love]

If you started with a tube flip flop in rs configuration and changed to d flip flop by putting an inverter between s and r, changing s to d and changing r to clock you would have a d flip flop. The blue box uses cd4013 which is a d dual flip flop dividing by 4 in one stage but 2 in the first part of that stage. You could try connecting D to /Q and using the clock as input and Q as output as in the cd4013 in the blue box. That might divide by two. The only problem is the cd4013 would have to function the same as our tubes would as a d flip flop and there would have to be an effective inverter added.

[earthtonesaudio]

Is there a reason to prefer one type of flipflop over another in octave-down circuits?

[Pedal love]

Is there a reason to prefer one type of flipflop over another in octave-down circuits?

No reason. Anytime you talk about divide by 2 or 4 octaves you always hear about the Boss oc-2 and the mxr blue box. These both use the cd4013 dual d flip flops to divide with. I just used it as something that might be plausible which are d flip flops. I really don't know if it would work.