System Power Amplifier (SPA) Installation Guide SPA2-60 Amplifi er SPA4-60 Amplifi er EXPLANATION OF SYMBOLS The term “WARNING!” indicates instructions regarding personal safety. If the instructions are not followed the result may be bodily injury or death. The term “CAUTION!” indicates instructions regarding possible damage to physical equipment. If these instructions are not followed, it may result in damage to the equipment that may not be covered under the warranty.
• Recommend 1RU (1.75 in / 44.45 mm) space above the amplifi er. • Minimum open space of 6 inches measured from back of amplifi er. NOTE: QSC System Power Amplifi ers contain advanced protection circuitry which allows them to reduce output power in order to maintain safe operating temperatures.
A. One Amplifi er 19-inch Rack (Left or Right Mount) Figure 2 Top Side Top Side Front Panel Front Panel — Figure 2 — B. Two Amplifi ers 19-inch Rack (Front or Rear Facing Out) Figure 3 Bottom Side Amp 2 Front Panel Bottom Side Amp 1...
Front or Rear Facing Out C. One Amplifi er Half Rack ( Figure 4 1. (1) Top Side Front Panel 2. (2) 3. (6) Top Side Rear Panel — Figure 4 — D. Under Table or on Wall Figure Mounting Surface Not supplied –...
E. Free-Standing on Desk/Table Figure 6 Bottom Side Front Panel — Figure 6 — F. Plenum Installation Confi gure amplifi er per option D Under Table or on Wall. Figure 7 Top Side Front Panel Plenum Kit - Suitable for Air Handling Spaces only when used with optional Plenum Kit (FG-000995-00) sold separately.
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Front Panel Limiter / Protect Input Signal Power Limiter / Protect Input Signal Power Red – Protect / Mute Blue – Present Blue – On Red – Protect / Mute Blue – Present Blue – On Orange – Limiter on Orange –...
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Balanced and Unbalanced Inputs Figure 18 Balanced Unbalanced Unbalanced Inputs: jumper between (-) negative and ground. — Figure 18 — Stereo Mode Inputs Figure 19 – Figure 21 & & & — Figure 20 — Outputs — Figure 19 — CAUTION!: Do not connect any output to ground.
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4 or 8-ohm Bridged Mode Inputs Figure 22 – Figure 24 & & & — Figure 23 — Outputs — Figure 22 — CAUTION!: Do not connect any output to ground. — Figure 24 — 70V / 100V Bridge Mode Figure 25 –...
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V = +10Vdc reference output C = 0-10Vdc control input Figure 29 – Figure 31 C @ 10V = Max Volume C @ 0V = Mute SPA2-60 10 kΩ 3.5mm, 5-pin Standby Switch in Run Mode Standby Switch in Standby Mode SPA4-60 —...
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Specifi cations Channels SPA2-60 2 Channels SPA4-60 4 Channels Stereo Mode (all channels driven) 8 60 W 4 60 W Bridged Outputs (per bridged output pair) 8 & 4 200 W 250 W 100V 250 W Frequency Response (4 and 8) 20 Hz - 20 kHz +/- 0.1 dB...
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