User manual QSC AUDIO SRA 3622

[. . . ] 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. 8- Do not install near any heat sources such as radiators, heat registers, stoves, or other apparatus (including amplifiers) that produce heat. 9- Do not defeat the safety purpose of the polarized or grounding-type plug. If the provided plug does not fit your outlet, consult an electrician for the replacement of the obsolete outlet. [. . . ] 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. 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!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. 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. 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!Refer to local and national electrical codes to assure code compliance. Two-conductor Speakon Cable Use two-conductor Speakon cable for stereo or parallel mode. Two cables will be required; one for CH1 and one for CH2. To Amplifier To Speaker Four-conductor Speakon Cable For biamp applications, use four conductor cable. Four conductor cable may be used for carrying both of the output channels with a single cable. Signal splitting required at loudspeaker end of cable. To Amplifier To Speaker 25 CONNECTIONS- Outputs: Speakon connectors Stereo or Parallel Modes Stereo and Parallel modes use one cable for each channel. CH1's Speakon can be used with a four conductor cable for carrying both outputs. The required signal splitting would take place at the speaker-end of the cable. [. . . ] · Check the input cables for broken ground (shield) connection. · Use balanced connections where possible for the entire signal chain. · The design of the amplifier eliminates internal hum fields, but external transformers or other magnetic devices may cause hum. Move cabling and signal sources to identify "hot spots" in the system; then avoid those spots. [. . . ]