| SPECIFICATIONS | ISA280 | ISA450 | ISA750 | ISA1350 | ISA300Ti | ISA500Ti | ISA800Ti |
|---|---|---|---|---|---|---|---|
| STEREO MODE, Both Channels Driven | |||||||
| 8 ohms 20 Hz-20 kHz 0.1% THD | 185W | 260W | 450W | 800W | 185W | 260W | 450W |
| 4 ohms 20 Hz-20 kHz 0.1% THD | 280W | 425W | 650W | 1300W | 280W | 425W | 650W |
| 2 ohms 1 kHz 1% THD | 430W | 700W | 1200W | 2000W | 430W | 700W | 1200W |
| DIRECT POWER, STEREO MODE | |||||||
| 70V 20 Hz-20 kHz +0/-0.3 dB 0.5% THD | - | - | - | 1500W | - | - | - |
| XF OUTPUT POWER, STEREO MODE | |||||||
| 70V or 100V 50 Hz-16 kHz 0.5% THD | - | - | - | - | 300W | 500W | 800W |
| 25V 50 Hz-16 kHz 0.5% THD | - | - | - | - | 200W | 300W | 500W |
| BRIDGED MONO MODE | |||||||
| 8 ohms 1 kHz 0.1% THD | 600W | 900W | 1500W | 2800W | 600W | 900W | 1500W |
| 4 ohms 1 kHz 1% THD | 830W | 1400W | 2400W | 4000W | 830W | 1400W | 2400W |
| 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 | 1.15v (+3.4 dBu) | 1.07v (+2.8 dBu) | 1.07v (+2.8 dBu) | 1.24v (+4.1 dBu) | 1.15v (+3.4 dBu) | 1.07v (+2.8 dBu) | 1.07v (+2.8 dBu) |
| Voltage Gain @ 8 ohms | 33.4x (30.5 dB) | 44.7x (33 dB) | 56.2x (35 dB) | 64.0x (36.1 dB) | 33.4x (30.5 dB) | 44.7x (33 dB) | 56.2x (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 lbs (16.3 kg) | 42 lbs (19 kg) | 47 lbs (21.3 kg) | 68 lbs (30.8 kg) | 44 lbs (20.0 kg) | 49 lbs (22.3 kg) | 57 lbs (26 kg) |
| Weight - Shipping | 42 lbs (19.1 kg) | 48 lbs (22 kg) | 53 lbs (24.0 kg) | 77 lbs (34.4 kg) | 50 lbs (22.7 kg) | 55 lbs (25 kg) | 63 lbs (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 (direct outputs) | Greater than 200 at 8 ohms, ISA 1350 greater than 250 | ||||||
| Output Regulation (isolated outputs) | Less than 1.5 dB | ||||||
| Input Impedance | 10 k ohms unbalanced, 20 k ohms balanced | ||||||
| Input Clipping | 10 Vrms (+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"(13.3cm) 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, 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 | ||||||
