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SDQ1b Owner's Manual 2012
Congratulations on your purchase of a handwired SDQ1 amplifier and thank you for choosing
Quinnamp to help you bring you some musical joy to life.
Please read and keep this manual for future reference.
Signal Path:
/BYPASS\
INPUT - CLEAN - OVERDRIVE - BUFFERED LOOP > OUTPUT
/BYPASS\
(FX SEND - FX RETURN)
SDQ1b Front Panel:
1
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Summary of Contents for Quinnamp SDQ1b
- Page 1 SDQ1b Owner's Manual 2012 Congratulations on your purchase of a handwired SDQ1 amplifier and thank you for choosing Quinnamp to help you bring you some musical joy to life. Please read and keep this manual for future reference. Signal Path: /BYPASS\ INPUT - CLEAN - OVERDRIVE - BUFFERED LOOP >...
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Page 2: Preamp Section
Preamp Section: PREAMP- The Preamp section sets up your input gain and basic clean tone. INPUT JACK- High Impedance input will not load pickups and is extremely pedal friendly. VOLUME- Sets the input Volume strength (or Signal Gain) and is active for both Clean and Overdrive channels. - Page 3 OVERDRIVE SECTION- controls set the basic gain and volume levels of the Overdrive Channel. OVERDRIVE- This control sets the amount of overdrive when using the OVERDRIVE channel. Lower settings yield cleaner overdriven tones. Higher settings will overdrive more. Keep in mind that the VOLUME control in the PREAMP SECTION also affects how much signal gain from the CLEAN CHANNEL is being cascaded into the OVERDRIVE CHANNEL.
- Page 4 Acts somewhat like a tone control for the power amp. Useful to tune the overall brightness and response of the amp. SDQ1b Rear Panel: IEC Module:...
- Page 5 IEC Module – contains the main power switch, power cord inlet connector and the fuse drawer. To access the fuse(s) use a small flat blade screwdriver in the notch at the bottom of the power cord inlet connector, the drawer is then pulled outward. The IEC Module can accept both large (3AG footprint) or smaller European (5mm X 20mm) fuses.
- Page 6 Bias Section: Bias Adjustment and Bias Test Point – Allows external access for bias adjustment (see bias procedure in the Maintenance section). Speaker Output Section: Speaker Jacks – The MAIN and EXT jacks are wired in parallel. NOTE! The MAIN jack MUST HAVE A SPEAKER CONNECTED, AT ALL TIMES, TO AVOID PERMANENT AMPLIFIER AND OUTPUT TUBE DAMAGE! Impedance Selector 4, 8, 16 - Set this control to the total impedance of all attached speakers.
- Page 7 Effects (FX) loop- The buffered effects loop in your SDO amplifier will easily drive pedal or rack effects units. FX SEND- Sets the amount of signal fed to the Effects Loop. Use this control to get maximum signal to your effects without signal clipping. Works great for both pedal and rack effects. When not using any effects in the loop set this control to noon for unity gain throughput.
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Page 8: Other Features
FOOTSWITCH JACK- This is a standard 180 degree 5 pin DIN jack for footswitch connection. A pinout diagram is included on the rear panel for referencing when connecting to automated switching devices and/or conversion boxes, altering footswitch functionality, and service troubleshooting. -
Page 9: Power On/Off Procedure
4,5 and 6 functions "Artist" footswitching will be available in the future and are currently only available by custom order. (Add $100 per additional function) Included is a 25’ footswitch cable. The cable used is a regular MIDI cable and is readily available in any length at most music stores. - Page 10 Warning – No user serviceable parts inside. Refer to a qualified technician for servicing. BIAS PROCEDURE: 1. When new output tubes are installed it is important to re-bias the amp for optimal performance. 2. ALWAYS HAVE A SPEAKER CONNECTED. 3. Use a digital volt meter set to DC volts at lowest scale (MV). Makes sure the black lead is the common terminal of the meter and the red lead is the DC voltage terminal of the meter.
- Page 11 operation. All tube brands are acceptable, a long plate is preferred in the V6 (Phase Inverter) position.
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