User manual BLITZ BZX4

[. . . ] NOTE: DO NOT CONNECT THESE HIGH LEVEL INPUT WIRES IF YOU ARE USING THE LOW LEVEL INPUT RCA JACKS. Turning this control clockwise to increase the level. Frequency response Input impedance Input sensitivity 10Hz-30KHz 22K Ohm 0-7V 15 Volts 60dB >90dB 0. 05% 10-16V DC, negative ground 1. 3"H x 3. 6"W x 5. 2"D 3 INPUT LEVEL CONTROL 4 LED POWER ON INDICATOR Maximum output LED indicator lights up when the internal switching power supply is activated and the unit is operational. To be connected to the positive terminal of your vehicle battery or other constant +12V source. [. . . ] If so, turn both the audio system and the engine off. Do not secure the Line Driver mounting screws. Refer to the ° ßTrouble Shooting Guide° ® at this manual. If the audio system does not have any noise, securely tighten the Line Driver mounting screw and double check the wiring cables for safe placement. SYSTEM ADJUSTMENT Preliminary Adjustments Pre-setting the system provides a necessary starting point for fine-tuning the entire audio system to maximum performance. NOTE: DO NOT MOUNT Line Driver UNTIL THE FOLLOWING PROCEDURES HAVE BEEN COMPLETED. Preset each amplifier input gain adjustment at the amplifier to half of maximum. Slowly turn the volume up and listen carefully for: obvious trouble in sound (distortion, no sound, no hiss, total silence). Turn the system off refer to "Trouble Shooting Guide" at this manual. 8 Caution DO NOT ROUTE AUDIO CABLES AND POWER CABLES TOGETHER!THIS CAN CAUSE ENGINE NOISE IN YOUR AUDIO SYSTEM. ALWAYS DISCONNECT THE SYSTEM FROM THE BATTERY BEFORE ATTEMPTING TO MAKE OR ALTER ANY CONNECTIONS. THIS PRODUCT IS DESIRED FOR USE IN ANY 12 VOLTS NEGATIVE GROUND ELECTRICAL SYSTEM ONLY. INSTALLING THIS PRODUCT IN ANY POSITIVE GROUND ELECTRICAL SYSTEM COULD SERIOUSLY DAMAGE THE AUDIO SYSTEM. TBOUBLE SHOOTING GUIDE PROBLEM 1. There is an audible distortion at a low volume level. A whining sound can be heard through the speakers when the audio system is at low volume with the engine running. The whining noise remains unchanged or seems to disappear when the volume level is increased. There is a "motor boating" type of sound when the engine is running and the audio system volume is set at a reasonably high level. [. . . ] To obtain warranty service you must first call our Consumer Return Hotline number at (718) 236-6948 to obtain a Return Authorization number. This R. A. # must appear on the outside of your package and on all paperwork relating to your return. When returning a product to us for warranty service it must be carefully packed and shipped prepaid to: R. A. # Blitz Service Center 1600 63rd Street Brooklyn, NY 11204 You must also include the following items: · A copy of your sales receipt or other proof of purchase · A brief letter indicating the problem you are experiencing · include in your letter your return address, daytime phone number, and R. A. [. . . ]