QSC ISA800Ti Power Amplifier 2 Channel 450 Watts per CH 8 Ohms Stereo Amp w 70 Volt Transformer

FEATURES

• Low-impedance outputs plus isolated 25, 70, and 100 volt outputs for distributed audio systems
• 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 (50 Hz or 75 Hz) protect speakers and prevent speaker transformer saturation, with minimal effect on program material
• Two-tier Class H complementary bipolar output circuitry reduces AC power draw and waste heat by 40%
• Front panel indicators include power, signal, and clip
• 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

SPECIFICATIONS	ISA280	ISA450	ISA750	ISA1350	ISA300Ti	ISA500Ti	ISA800Ti
	STEREO MODE, Both Channels Driven
8 ohms 20 Hz–20 kHz 0.1% THD	185 W	260 W	450 W	800 W	185 W	260 W	450 W
4 ohms 20 Hz–20 kHz 0.1% THD	280 W	425 W	650 W	1300 W	280 W	425 W	650 W
2 ohms 1 kHz 1% THD	430 W	700 W	1200 W	2000 W	430 W	700 W	1200 W
	DIRECT POWER, STEREO MODE
70V 20 Hz–20 kHz +0/-0.3 dB 0.5% THD	-	-	-	1500 W	-	-	-
	TRANSFORMER-ISOLATED OUTPUT POWER, STEREO MODE
70V or 100V 50 Hz–16 kHz 0.5% THD	-	-	-	-	300 W	500 W	800 W
25V 50 Hz–16 kHz 0.5% THD	-	-	-	-	200 W	300 W	500 W
	BRIDGED MONO MODE
8 ohms 1 kHz 0.1% THD	600 W	900 W	1500 W	2800 W	600 W	900 W	1500 W
4 ohms 1 kHz 1% THD	830 W	1400 W	2400 W	4000W	830 W	1400 W	2400 W
	XF OUTPUT POWER, BRIDGED MONO MODE
140V or 200V 50 Hz-16 kHz 0.5% THD	-	-	-	-	600W	1000W	1600W
Signal to Noise (20 Hz-20 kHz)	100 dB	100 dB	100 dB	100 dB	100 dB	100 dB	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	Class H, 3 Tier	Class AB	Class AB	Class H
THX Approved	-			-	-	-	-
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 power	Less than 0.03% THD, 4 ohms and 8 ohms Less than 0.03% THD, 4 ohms and 8 ohms
Frequency Response 10 dB below rated output power	ISA 280, 450, 750 and 1350:  20 Hz–20 kHz, +0/-1 dB; -3 dB points: 5 Hz and 50 kHz				ISA 300Ti, 500Ti and 800Ti:  Direct outputs: -3 dB @ 50 Hz, -0.5 dB @ 20 kHz; XF outputs: 50 Hz–16 kHz, +1/-3 dB
Damping 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 connector
Controls	Front: AC switch Rear: Ch. 1 and Ch. 2 gain knobs, 10-position DIP switch
Indicators	PWR-ON: Green LED; SIGNAL: Green LED (1 per channel); CLIP: Red LED (1 per channel)
Dimensions	19" (48.3 cm) rack mounting, 5.25"(13.3 cm) tall (3 rack spaces),  15.9" (40 cm) deep (from front mounting rails)
Amplifier Protection	Full short circuit, open circuit, thermal, ultrasonic, and RF protection; Stable into reactive or mismatched loads
Power 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