QSC ISA1350
Features
Drives 70V lines directly with 1500 watts per channel
Rear panel gain controls for tamper resistance; 2-dB detents allow for quick and repeatable settings.
XLR and detachable Euro-style input connectors
DataPort V2 for use with DPV2-compatible signal processing accessories (XC-3, SF-3, LF-3) and DSP-3/DSP-4 (with external power supply)
Independent defeatable clip limiters for reduced distortion
Selectable high-pass filters (30 Hz or 70 Hz) protect speakers and prevent speaker transformer saturation, with minimal effect on program material
Three-tier Class H complementary bipolar output circuitry reduces AC power draw and waste heat by 50%
Front panel indicators include power, signal, clip and protect
Covered barrier strip output connectors for safety agency compliance
Automatic on-demand variable-speed fan: quiet normal operation, with maximum cooling when needed
Rear-to-front air flow helps keep equipment racks cool
Stereo, bridge, or parallel operating modes
Comprehensive protection circuitry including DC, infrasonic, thermal overload, and short circuit protection
3-year warranty plus optional 3-year extended service contract
QSC ISA1350
ISA280 ISA450 ISA750 ISA1350 ISA300Ti ISA500Ti ISA800Ti OUTPUT POWER PER CHANNEL, STEREO MODE, both channels driven 8Ω, 20 Hz–20 kHz 0.1% THD
4Ω, 20 Hz–20 kHz 0.1% THD
2Ω 1 kHz 1% THD185 W
280 W
430 W260 W
425 W
700 W450 W
650 W
1200 W800 W
1300 W
2000 W185 W
280 W
430 W260 W
425 W
700 W450 W
650 W
1200 WDIRECT POWER PER CHANNEL, STEREO MODE 70V, 20 Hz–20 kHz +0/-0.3 dB 0.5% THD - - - 1500 W - - - TRANSFORMER-ISOLATED OUTPUT POWER PER CHANNEL, STEREO MODE 70V or 100V, 50 Hz–16 kHz 0.5% THD
25V, 50 Hz–16 kHz 0.5% THD-
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-300 W
200 W500 W
300 W800 W
500 WOUTPUT POWER, BRIDGED MONO MODE 8Ω, 1 kHz 0.1% THD
4Ω 1 kHz 1% THD600 W
830 W900 W
1400 W1500 W
2400 W2800 W
4000 W600 W
830 W900 W
1400 W1500 W
2400 WTRANSFORMER-ISOLATED OUTPUT POWER, BRIDGED MONO MODE 140V or 200V, 50 Hz-16 kHz 0.5% THD - - - - 600 W 1000 W 1600 W Signal to Noise (20 Hz-20 kHz) 100 dB Distortion (SMPTE-IM) Less than 0.01% Less than 0.01% Less than 0.02% Less than 0.01% Less than 0.01% Less than 0.01% Less than 0.02% Input Sensitivity @ 8 ohms 1.15 V
(+3.4 dBu)1.07 V
(+2.8 dBu)1.07 V
(+2.8 dBu)1.24 V
(+4.1 dBu)1.15 V
(+3.4 dBu)1.07 V
(+2.8 dBu)1.07 V
(+2.8 dBu)Maximum Voltage Gain 33.4×
(30.5 dB)44.7×
(33 dB)56.2×
(35 dB)64.0×
(36.1 dB)33.4×
(30.5 dB)44.7×
(33 dB)56.2×
(35 dB)Output Circuitry Class AB Class AB Class H, 2 tier Class H, 3 tier Class AB Class AB Class H, 2 tier THX Approved - Yes Yes - - - - Weight - Net 36 lb
(16.3 kg)42 lb
(19 kg)47 lb
(21.3 kg)68 lb
(30.8 kg)44 lb
(20.0 kg)49 lb
(22.3 kg)57 lb
(26 kg)Weight - Shipping 42 lb
(19.1 kg)48 lb
(22 kg)53 lb
(24.0 kg)77 lb
(34.4 kg)50 lb
(22.7 kg)55 lb
(25 kg)63 lb
(28.6 kg)ALL MODELS Distortion (Typical)
20 Hz–20 kHz: 10 dB below rated power
1.0 kHz and below: full rated powerLess than 0.03% THD, 4 ohms and 8 ohms
Less than 0.03% THD, 4 ohms and 8 ohmsFrequency Response
10 dB below rated output powerISA 280, 450, 750 and 1350:
20 Hz–20 kHz, +0/-1 dB; -3 dB points: 5 Hz and 50 kHzISA 300Ti, 500Ti and 800Ti:
Direct outputs: -3 dB @ 50 Hz, -0.5 dB @ 20 kHz; XF outputs: 50 Hz–16 kHz, +1/-3 dBDamping Factor with 8Ω Load (direct outputs) Greater than 200; ISA 1350 greater than 250 Output Regulation (isolated outputs) Less than 1.5 dB Input Impedance 10 kΩ unbalanced, 20 kΩ balanced Input Clipping 10 V rms (+22 dBu) Cooling Continuously variable speed fan, back-to-front air flow Connectors, each channel Input: Active balanced; 3-pin Euro-style detachable terminal block and XLR (pin 2+)
Output: Covered barrier strips
DataPort V2: HD-15 connectorControls Front: AC switch
Rear: Ch. 1 and Ch. 2 gain knobs, 10-position DIP switchIndicators PWR-ON: Green LED; SIGNAL: Green LED (1 per channel);
CLIP: Red LED (1 per channel)Dimensions (HWD) inches 5.25 x 19 x 15.9 / 3RU Dimensions (HWD) mm 133 x 483 x 400 / 3RU Amplifier Protection Full short circuit, open circuit, thermal, ultrasonic, and RF protection;
Stable into reactive or mismatched loadsPower Requirements 120 or 230 VAC, 50–60 Hz Load Protection On/off muting; Triac crowbar: ISA 750, 1350, and 800Ti; AC coupling: ISA 280, 300Ti, 450, and 500Ti