GZNA 4350XII - Car stereo Ground Zero - Free user manual and instructions

USER MANUAL GZNA 4350XII Ground Zero

Thank you for selecting a Ground Zero amplifier. We are providing a helpful hints list which should keep you from experiencing unnecessary shut down. Have fun with this high quality Nuclear product. Features

• As a precaution it is advisable to disconnect the vehicle’s battery before making connection to the +12 Volts supply wiring (see owner’s manual of your car for further information).

• Please use great caution drilling your trunk. Your gas tank and brake lines can be damaged by puncturing with your drill bit – this could cause damage or failure of your cars operating systems.

• Never pass wires over sharp angles. It is recommended to buffer the power supply of the amplifier with an additional capacitor (min 1 F) to guarantee a stable operation voltage. WARNING ! High powered audio systems in a vehicle are capable of generating "Live Concert" levels of sound pressure. Continued exposure to excessively high volume sound levels may cause hearing loss or damage. Also, operation of a motor vehicle while listening to audio equipment at high volume levels may impair your ability to hear external sounds such as; horns, warning signals, or emergency vehicles, thus constituting to a potential traffic hazard. In the interest of safety, Consumer Electronics recommends listening at lower volume levels while driving. Planning your system Before beginning the installation, consider the following: a. If you plan to expand your system by adding other components sometime in the future, ensure adequate space is left, and cooling requirements are met. b. If your radio / source is equipped with pre-amp outputs, it is possible to utilize them to drive the amplifier and connecting (amplifier) to the 2 rear speakers. Mounting your amplifier

a. Select a suitable location that is convenient for mounting, is accessible for wiring and has ample room for air circulation and cooling. b. Use the amplifier as a template to mark the mounting holes, remove the amplifier and drill 4 holes. Then mount the amplifier with the mounting screws. Warning Chose a mounting position where all eclectic wires are protected from being damaged by sharp edges, heat or other conditions. +12Volt DC electrical connections must be fused on the battery side. Make sure your radio and all other devices will be turned off while connection your system. This amplifier has now internal fuse. Therefore it is absolutely necessary to connect the ANL- fuseholder (included in delivery) with its 200 A fuse. The cable length between amplifier and fuseholder must not be longer than max 20 cm / 7.9”. Please see the connection diagram on the following side for correct wiring.

Controls and functions

Controls and functions 1 Speaker terminals For connection of the speakers

With this controller you can adjust the input sensitivity. 6 Bass boost controlle

For adjusting of the bass boost level in the range from 0 to +12 dB. 7 Mode switch

djust the crossover for the chosen utilization. LPF – Only bass frequencies (below 30Hz - 3000Hz) will be reproduced. In this adjustment the Highpass (Subsonic) is also activated. This equals a Bandpass filter from 5 till 3000Hz. FULL – All frequencies will be reproduced. HPF – Only middle and high frequencies (over 5Hz – 3000Hz) will be reproduced. 8 Low pass controller For subwoofer and Kickwoofer operation - Only frequencies from 30 to 3000Hz will be reproduced (depending on the lowpass filter controller position). Set the filter switch to „LOW“ position. Adjust the variable Lowpass frequency to the desired frequency using the controller. In this adjustment the Highpass (Subsonic) is also activated. This equals a Bandpass filter from 5 till 3000Hz.

High pass controller (Subsonic) Set the filter switch to „HIGH“ position. Adjust the variable Highpass crossover frequency to the desired frequency using the controller. All frequency between 5 and 3000Hz will be reproduced. 10 Phase shift controller This controller allows you to fit the subwoofer channel in-phase to the front system. 11 Remote control input For connection of the bass remote control.

Turning on the amplifier The amplifier automatically turns on a few seconds after you turn on your radio. Note: Your amplifier temporarily shuts down if it gets too hot, then restarts automatically once it cools (At about 80° / 176° F). Adjusting the audio level

1. LEVEL (Min/Max): Turn fully counter- clockwise to MIN position

2. Turn the auto sound system's volume control to about two-third of its full range.

3. Adjust LEVEL to a comfortable listening level.7

Connecting the speaker

TRI MODE operation output allows a subwoofer to be operated in mono mode while the main speakers are playing in stereo. Leave the crossover switch on “Full” position. Use 100 volt, non-polar capacitors for a high pass crossover to filter out low frequencies and Air- core or Ferrit- ore coils with a minimum diameter of 1 mm / 0.039” for the lowpass crossover to filter out high frequencies. The capacitor and inductor values as written in the above table. The front and rear channels of this amplifier get this capability. Only the rear left and right channels are shown on the above pictures.9

4 x 200 W (1% THD+N) 4 x 240 W (10% THD+N) RMS Power @ 2 Ω CEA Standard CEA-2006-

4 x 350 W (1% THD+N) 4 x 420 W (10% THD+N) RMS Power @ 1 Ω CEA Standard CEA-2006-

4 x 530 W (1% THD+N) 4 x 630 W (10% THD+N) RMS Power @ 4Ω bridged CEA Standard CEA-2006-

2 x 700 W (1% THD+N) 2 x 840 W (10% THD+N) RMS Power @ 2Ω bridged CEA Standard CEA-2006-

2 x 1060 W (1% THD+N) 2 x 1260 W (10% THD+N) Damping factor > 180 Signal to noise Ratio > 90 dB Lowpass 30 – 3000 Hz Highpass 5 – 3000 Hz Bandpass 5 – 3000 Hz Subsonic filter 5 – 3000 Hz Bass boost 0 ~ +12 dB (Channel 3/4) Bass boost frequency 45 Hz (Channel 3/4) Phase shift 0 – 180° (Channel 3/4) Frequency response 5 Hz – 38 KHz (± 1 dB) Efficiency @ 4 Ω 200 mV – 9 V (± 5%) THD < 0,10 % Bass remote

Lowpass-Opeartion (Channel 3/4) Fuse External ANL Fuse 200A (included in delivery) Dimensions W x H x L mm 305 x 62 x 510 Dimensions W x H x L inch 12 x 2.44 x 20.08“

Trouble shooting guide Symptoms Check Points Cure No sound Is the POWER LED illuminated? Check fuses in amplifier. Be sure remote lead is connected. Check signal leads. Check again control. Check tuner/deck volume level. Is the diagnostic LED illuminated? Check for speaker short or amplifier overheating Amp not switching on No power to the amplifier Check power wire or connections No power to remote wire with receiver on Check connections to radio No sound in one channel Check speaker leads Inspect for short circuit or an open connection Check audio leads Reverse left and right RCA inputs to determine if it is occurring before the amp Amp turning off at medium / high volume Check speaker loa impedance Be sure proper speaker load impedance recommendations are observed (If you use an ohm meter to check speaker resistance, please remember that DC resistance and AC impedance may not be the same.) Protection LED is on Temperature shut down Turn radio volume down Speaker wires short Separate speaker wires and insulate11

4 x 350 W (1% THD+N) 4 x 420 W (10% THD+N) RMS teho @ 1 Ω CEA Standard CEA-2006-