Quilter Tri-Q

marcelomd · July 03, 2019, 02:48:16 PM

Hi,

I was looking into Quilter amps. They do sound nice.

I was wondering how one would implement the "Tri-Q" tone knob?

it goes from mid scoop (ccw) to flat (middle) to high pass (full cw).

Thanks!

antonis · July 04, 2019, 05:22:51 AM

It's probably used together with Hi-cut knob..
(e.g. Tri-Q & Hi-cut Full CW form a band-pass filter..)

Doesn't QUILTER provide a user manual..??

marcelomd · July 04, 2019, 10:20:14 AM

Hi,

I was trying to understand how such a filter (notch->flat->hi pass) was designed. Is it a big muff type thing? Some opamp wizardry?

Sorry if I was not clear =)

lietuvis · July 04, 2019, 02:55:01 PM

Could be something like this. found this sometime ago on web

PRR · July 04, 2019, 06:55:01 PM

Steben · July 05, 2019, 01:24:38 AM

The thing I would add to quilters is the control over the distortion shaping. Quilters are fenderish feedback voiced. Clipping is rather hard and the dynamic crossover is fixed.

garcho · July 05, 2019, 10:05:49 AM

Is it "continuous"? Like, smoothly morphs from one to the next? Or is it a little jumpy? Could be mpu controlling an IC filter, they figure if you want mid scoop, you won't want hpf.

marcelomd · July 05, 2019, 01:23:21 PM

Quote from: lietuvis on July 04, 2019, 02:55:01 PM
Could be something like this. found this sometime ago on web

Quote from: PRR on July 04, 2019, 06:55:01 PM

I think you nailed it!

Quote from: garcho on July 05, 2019, 10:05:49 AM
Is it "continuous"? Like, smoothly morphs from one to the next? Or is it a little jumpy? Could be mpu controlling an IC filter, they figure if you want mid scoop, you won't want hpf.

I believe they are 100% analog.

But yes, one knob selects between hpf and scoop, the other is a lpf. You can get all usual combinations with these two. I would use a Baxandall anyway.

Thanks!

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Quilter Tri-Q