QSC ISA 300 Ti 300 Watt Power Amplifier

SKU
ISA300TI
$1,085.00
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This ISA300Ti amplifier includes a selectable high-pass filters to protect speakers and prevent speaker transformer saturation with minimal effect on program material. The ISA Series provide additional protection circuitry including DC, infrasonic, thermal overload, RF and short circuit protection. Selectable high-pass filters are included to protect speakers and prevent speaker transformer saturation with minimal effect on program material. Versatile loading options and a comprehensive feature set make the ISA Series a rugged, cost-effective power solution for any permanently installed sound system.

QSC ISA 300 Ti 300 Watt Power Amplifier Features:

  • Low-impedance and isolated 25, 70, and 100 volt outputs for distributed audio systems available simultaneously.
  • Rear panel gain controls for tamper resistant operation with 2 dB detents 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 protect speakers and prevent speaker transformer saturation with minimal effect on program material (50 Hz or 75 Hz.)
  • Front panel indicators include power, signal, and clip.
  • Covered barrier strip output connectors for safety agency compliance.
  • Automatic variable-speed fan for quiet normal operation with maximum cooling on demand.
  • Rear-to-front air flow keeps 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.
  • Simple barrier strip connection determines output mode.

QSC ISA300 Ti Specifications
SPECIFICATIONSISA300Ti
 STEREO MODE, Both Channels Driven
8 ohms 20 Hz-20 kHz 0.1% THD185W
4 ohms 20 Hz-20 kHz 0.1% THD280W
2 ohms 1 kHz 1% THD430W
 DIRECT POWER, STEREO MODE
70V 20 Hz-20 kHz +0/-0.3 dB 0.5% THD-
 XF OUTPUT POWER, STEREO MODE
70V or 100V 50 Hz-16 kHz 0.5% THD300W
25V 50 Hz-16 kHz 0.5% THD200W
 BRIDGED MONO MODE
8 ohms 1 kHz 0.1% THD600W
4 ohms 1 kHz 1% THD830W
 XF OUTPUT POWER, BRIDGED MONO MODE
140V or 200V 50 Hz-16 kHz 0.5% THD600W
Signal to Noise (20 Hz-20 kHz)100 dB
Distortion (SMPTE-IM)Less than 0.01%
Input Sensitivity @ 8 ohms1.15v
(+3.4 dBu)
Voltage Gain @ 8 ohms

33.4x
(30.5 dB)
Output CircuitryClass AB
THX Approved-
Weight - Net

44 lbs
(20.0 kg)
Weight - Shipping

50 lbs
(22.7 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 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 (direct outputs)Greater than 200 at 8 ohms, ISA 1350 greater than 250
Output Regulation (isolated outputs)Less than 1.5 dB
Input Impedance10 k ohms unbalanced, 20 k ohms balanced
Input Clipping10 Vrms (+22 dBu)
CoolingContinuously variable speed fan, back-to-front air flow
Connectors, each channelInput: Active balanced; 3-pin Euro-style detachable terminal block and XLR (pin 2+)
Output: Covered barrier strips 
DataPort V2: HD-15 connector
ControlsFront: AC switch
Rear: Ch. 1 and Ch. 2 gain knobs, 10-position DIP switch
IndicatorsPWR-ON: Green LED; SIGNAL: Green LED (1 per channel);
CLIP: Red LED (1 per channel)
Dimensions19" (48.3 cm) rack mounting, 5.25"(13.3cm) tall (3 rack spaces), 
15.9" (40 cm) deep (from front mounting rails)
Amplifier ProtectionFull short circuit, open circuit, thermal, ultrasonic, and RF protection;
Stable into reactive or mismatched loads
Power Requirements120, 230, VAC, 50-60 Hz
Load ProtectionOn/off muting; Triac crowbar: ISA 750, 1350 and 800Ti; AC coupling: ISA 280, 300Ti, 450 and 500Ti

The ISA 300 Ti 300 Box Includes:
(1) QSC ISA 300 Ti 300 Watt Power Amplifier
(1) AC Power Cord
(4) Rubber Feet
(1) Rear Rackmount Kit
(2) 3-Pin Terminal Block Connectors
(1) User Manual

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