User manual manual del usario manuel de l’utilisateur bedienhandbuch 用户手册 en es fr de ch *td-000136-00* td-000136-00 rev.C • isa 280 • isa 450 • isa 750 • isa 1350 • isa 300ti • isa 500ti • isa 800ti installed sound professional audio amplifiers.
2 en important safety precautions & explanation of symbols caution: to reduce the risk of electric shock, do not remove the cover. No user-serviceable parts inside. Refer servicing to qualified personnel. The lightning flash with arrowhead symbol within an equilateral triangle is intended to alert t...
3 en introduction thank you for purchasing this qsc power amplifier. Please read the following directions to obtain the best results. Key features: •isa 280, 450, 750, and 1350 models: 2 channels at 2 ohms (min.) impedance, bridgeable into 4 ohms (min.) impedance. •isa “ti” models: low impedance out...
4 en rack mounting use four screws and washers to mount the amplifier to the equipment rack rails. To use the amplifier outside a rack, attach the self-adhe- sive rubber feet to the bottom. Air flow in qsc amplifiers: cool air is drawn into the rear of the amplifier by the cooling fan. Warm air exit...
5 en selecting stereo, parallel, or bridge mode the amplifier can be set for normal stereo mode, parallel input mode, or bridge mono mode. Stereo mode- each channel remains inde- pendent, and may be used for two different signals. Parallel mode - this setting connects both inputs together. One signa...
6 en inputs each channel has a balanced xlr and terminal block input. The input impedance is 20k ohm balanced or 10k ohm unbalanced. Balanced connections are recommended for less ac hum and interference, especially with long cable runs. Unbalanced con- nections may be suitable for short cables. The ...
7 en 70v/100v stereo or parallel connection: each 70v/ 100v zone connects to its respective channel. Ensure that all speaker connections maintain proper polarity. 140v/200v bridge connection: wire each bridged pair to a 140v/200v circuit as shown. Connect a jumper wire between ch1 [0] and ch2 [0] te...
8 en gain controls are located on the rear panel. Led indicators the led indicators can be used to monitor system operation and identify common problems. Power: a single green led, on left side of ac power switch. Normal indication: ac switch on: led will illuminate. If no indication: check ac power...
9 en specifications (all models) dynamic headroom 2 db at 4 ohms distortion smpte-im less than 0.01% signal to noise -100 db (unweighted, 20 hz.-20 khz.) input clipping +22 dbu, 10 vrms (isa 1350: +15.3 dbu, 4.53 vrms) input impedance 10k ohms unbalanced, 20k ohms balanced amplifier protection short...
10 en specifications: isa 280, isa 450, isa 750, and isa 1350 output power in watts isa280 isa 450 isa 750 isa 1350 ftc: 8 ohms, 2 channels driven 185 260 450 800 (20 hz - 20 khz, 0.1% thd) 4 ohms 2 channels driven 280 400 650 1300 (20 hz - 20 khz, 0.1% thd) eia: 16 ohms, 1 channel driven 100 140 25...
11 en specifications: isa 300ti, isa 500ti, and isa 800ti output power in watts isa 300ti isa 500ti isa 800ti ftc: 8 ohms, 2 channels driven 185 260 450 (20 hz - 20 khz, 0.1% thd) 4 ohms 2 channels driven 280 400 650 (20 hz - 20 khz, 0.1% thd) eia: 16 ohms, 1 channel driven 100 140 250 (1 khz, 0.1% ...
12 en warranty information & how to contact qsc warranty (usa only; other countries, see your dealer or distributor) disclaimer qsc audio products, inc. Is not liable for any damage to speakers, or any other equipment that is caused by negligence or improper installation and/or use of this amplifier...
