Posting shots of Quinn SDQ1, SDQ2 - ok?

[martin manning]

inside

Nice pictures, but which amp is this?

[roknroll]

I think it is sdo if there is such a thing or sdq

[erwin_ve]

Interesting things at V2b, anybody got clues?

[martin manning]

Thanks, rocknroll.

Looks like there is a selection of cathode resistor and bypass caps for the OD stages on a rotary switch, along with the entrance trimmer, on the back panel. See in this picture: https://tubeamparchive.com/viewtopic.ph ... 529#340529

[NYC_Blues]

I think it is sdo if there is such a thing or sdq

Probably an SDO. Or a custom.

The SDQ uses a PCB with hand laid and hand wired components.

Will get SDQ2 (HRM) pics up later today or tomorrow. The SDQ1 is still in Nashville.

[jam-mill]

Found this image of the back of an SDQ2 Pro. Although, the toggles for the foot switch have a different arrangement.

[NYC_Blues]

The Alt Presence pot clicks off when fully CCW. Clicking that in engages the Bluesmaster PI. When that pot is disengaged, the front presence is active and the Skyliner PI is in place.

The effects loop send knob also clicks off.

[Structo]

For future reference, you can post up to five files in each post.

[John_P_WI]

No wonder why Shad fell behind in production, Holy Shite, those are busy amps inside...

[NYC_Blues]

SDQ2, toggle on footswitch is to make Mid Boost button a Footswitch Defeat button

[NYC_Blues]

More SDQ2

[NYC_Blues]

Last SDQ2 pic

[NYC_Blues]

The cables at the bottom of the pic showing the front face of the amp are for the loop. They are Thermax RG400, 6' set measures 195pf.

Honestly, I can't tell the difference between these cables and the instrument cables I was using previously (Evidence Audio Melody).

[NYC_Blues]

Anybody know what the brown signal caps are? I see some type of "A D" logo printed on the far left of each. A and D are a single character merged together.

[jelle]

Look like Xicon MPP to me.

Hopefully, those SIL05-1A72-71D relays will never go bad.