GZIA 1.1150D - Receiver Ground Zero - Free user manual and instructions
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| Product Type | Car Audio Amplifier (Class D) |
| Brand | Ground Zero |
| Model | GZIA 1.1150D |
| Number of Channels | 1 (Mono) |
| RMS Power (4 Ohms) | 330 W |
| RMS Power (2 Ohms) | 650 W |
| RMS Power (1 Ohm) | 1150 W |
| Frequency Response | 10 Hz - 250 Hz |
| Input Sensitivity | 0.2 V - 5 V |
| Low Pass Filter | 50 Hz - 250 Hz (variable) |
| Subsonic Filter | 10 Hz - 50 Hz (variable) |
| Bass Boost | 0 - 12 dB at 45 Hz |
| Dimensions (L x W x H) | 330 mm x 200 mm x 55 mm |
| Weight | 2.5 kg |
| Fuse Rating | 100 A (external) |
| Power Supply | 10 V - 15 V DC (vehicle battery) |
| Recommended Impedance | 1 Ohm - 4 Ohms |
| Protection Features | Thermal, overcurrent, DC offset, short circuit |
| Remote Turn-On | Yes (via remote wire) |
| Maintenance | Keep clean and dry; ensure adequate ventilation |
| Safety Notice | Install by qualified personnel; use proper fuse and wiring |
| Spare Parts / Repairability | No user-serviceable parts; contact dealer for service |
| General Information | High-performance mono amplifier for subwoofers |
Frequently Asked Questions - GZIA 1.1150D Ground Zero
How do I connect the GZIA 1.1150D amplifier?
Connect the power wire (e.g., 4 AWG) to the +12V terminal, ground wire to a clean chassis ground, and remote turn-on wire to the head unit's remote output. Use a suitable fuse near the battery. Connect the subwoofer(s) to the speaker terminals observing impedance.
What is the recommended impedance for this amplifier?
The GZIA 1.1150D is stable down to 1 Ohm. For optimal performance, use a 1 Ohm or 2 Ohm load. At 4 Ohms, power output is reduced.
How do I set the gain correctly?
Set the head unit volume to about 75% of max, turn gain to minimum, then slowly increase until you hear distortion, then back off slightly. Use a multimeter to set voltage for target power if desired.
Why does my amplifier go into protection mode?
Common causes: impedance too low, overheating, short circuit, or insufficient voltage. Check wiring, ensure proper ventilation, and verify impedance load. The amp will shut down to prevent damage.
Can I bridge this amplifier?
No, the GZIA 1.1150D is a mono amplifier designed for a single subwoofer or multiple subs wired in parallel. It cannot be bridged as it is already single-channel.
What is the frequency response range?
The amplifier reproduces frequencies from 10 Hz to 250 Hz, making it ideal for subwoofers. The low-pass filter allows you to tailor the upper limit.
How do I adjust the low-pass filter?
Use the LP filter knob (50-250 Hz) to set the crossover frequency. For subwoofers, a common setting is 80 Hz. Adjust based on your system and preferences.
What is the purpose of the subsonic filter?
The subsonic filter (10-50 Hz) removes ultra-low frequencies that can cause cone over-excursion or port noise in vented enclosures. Set it just below the port tuning frequency.
Does this amplifier have a remote bass knob?
The GZIA 1.1150D does not include a wired remote bass knob as standard. However, you can purchase an optional remote level controller (not included) if desired.
What gauge wire should I use?
Use 4 AWG power and ground wire for the amplifier to handle up to 100A. The remote wire can be 18 AWG. Ensure all connections are tight and secure.
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USER MANUAL GZIA 1.1150D Ground Zero
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Product information
Brand : Ground Zero
Model : GZIA 1.1150D
Category : Receiver