User manual QSC AUDIO SRA 1222

[. . . ] SRA 1222 SRA 2422 SRA 3622 Studio Reference Amplifier User Manual *TD-000107-00* TD-000107-00 rev. A 1 IMPORTANT SAFETY INSTRUCTIONS & EXPLANATION OF SYMBOLS 1- Read these instructions. 5- Do not use this apparatus near water. 7- Do not block any ventilation openings. Install in accordance with QSC Audio Product's instructions. [. . . ] Example: #10 AWG is a bigger, thicker wire than #16 AWG. 22 CONNECTIONS- Outputs: Binding Posts Using the Binding Posts The binding posts support several connection methods; banana plugs, spade lugs, or direct wire connection. European models do not support the use of banana plugs. If using banana plugs, plug into the binding post directly. If using spade lugs, refer to the diagram, below, for acceptable dimensions of lug. If connecting the cable directly, strip about 1/2-inch of insulation from the ends and neatly twist any loose strands. Loosen the retaining nut fully, insert the wire, and tighten. Maximum wire gauge is #10 AWG (2. 58 mm diameter). Binding post outputs on the rear panel. Continued, following page. . . . . 13 mm 1/2" 2. 58 mm max. diameter #10 AWG maximum 19 mm 3/4" European models do not have banana plug feature. WARNING!Stereo or Parallel Mode: Use NEC Class 2 wiring. Refer to local and national electrical codes to assure code compliance. 6. 3 mm minimum 0. 25" minimum 12. 9 mm maximum 0. 51" maximum 23 CONNECTIONS- Outputs: Binding Posts Stereo and Parallel Mode output connections using binding posts Connect each set of binding post outputs to its respective loudspeaker. Maintain proper polarity when hooking up loudspeakers. Connect each red binding post (+, or positive) to the red (or +, positive) terminal of each loudspeaker. Connect each black binding post (-, or negative) to the black (or -, negative) terminal of each loudspeaker. All amplifiers and loudspeakers must maintain proper connection polarity in order for bass response to be optimum. Z= 2 ohms minimum Z= 2 ohms minimum Bridge Mode output connections using binding posts Z= 4 ohms minimum Connect channel 1's red binding post (+, positive) to the loudspeaker's red (+, or positive) terminal. Connect channel 2's red binding post (+, positive) to the loudspeaker's black (-, or negative) terminal. If operating other amplifiers in bridge mode, make sure the connection polarity is maintained. Do not use less than 4-ohm loads in bridge mode!Note polarity of connections for bridge mode. 24 CONNECTIONS- Outputs: Speakon connectors Speakon Outputs The Speakon connectors offer quick, reliable connection and disconnection of the speakers. Although more expensive than banana or spade-lug style speaker cable termination, the speed, convenience, and reliability make Speakon use popular with portable and live sound setups. The Speakons are wired: CH1 Speakon: Pin 1+ = CH1 positive Pin 1- = CH1 negative Pin 2+ = CH2 positive Pin 2- = CH2 negative Pin 1+ = CH2 positive Pin 1- = CH2 negative CH2 Speakon: WARNING! [. . . ] Do not "lift" or break AC power grounds under any circumstance as safety of the system will be compromised. 35 SPECIFICATIONS- SRA Series SRA1222 Output Power: (watts per channel, stereo/parallel mode) 8 ohms, 20Hz to 20kHz, 0. 03% THD 4 ohms, 20Hz to 20kHz, 0. 05% THD 2 ohms, 1kHz, 1. 0% THD Output Power: (watts, bridge mode) 8 ohms, 20Hz to 20kHz, 0. 10% THD 4 ohms, 20Hz to 20kHz, 0. 10% THD Output circuitry: Distortion (SMPTE-IM): Distortion (4 and 8 ohm, typical): 20 Hz to 20 kHz: 10 dB below rated power 1 kHz and below: at full rated power 200 350 600 SRA2422 425 725 1200 SRA3622 725 1100 1800 750 1200 class AB <0. 01% 1550 2400 2-tier class H <0. 02% 2400 3600 2-tier class H <0. 02% <0. 02% <0. 01% <0. 02% <0. 01% <0. 02% <0. 01% Input Sensitivity: (for rated power into 8 ohm load) Input Sensitivity: (for rated power into 4 ohm load) Power requirements: (pink noise, 1/8 rated power) Slew Rate: Frequency response, all models: (LF filter switched off) Damping factor @ 1 kHz and below: Noise, all models, 20 Hz­20 kHz: 1. 43V 2. 12V 2. 71V 1. 35V 1. 92V 2. 38V 5. 6 amps at 4 ohms/ch. 20V/uS 20 Hz to 20 kHz, ±0. 2 dB 8 Hz to 50 kHz, +0, -3 dB >500 -107 dB Specifications subject to change without notice! 5. 0 amps at 8 ohms/ch. 20V/uS 36 SPECIFICATIONS- SRA Series ALL MODELS Voltage gain: Controls: 28× (29 dB) FrontRearAC switch, Recessed Ch. 1: clip limiter on/off, LF filter on/off, LF filter freq select--20 or 50 Hz; Ch. [. . . ]