The SOUNDMAX SM-CA1001M is a 1-channel car amplifier designed to enhance the audio system in a vehicle. It is a robust device with a focus on delivering powerful bass.
Function Description:
The SM-CA1001M serves as a monoblock amplifier, specifically optimized for driving subwoofers. It takes a low-level audio signal (RCA) or a high-level signal from the car stereo and amplifies it to power a subwoofer, providing increased bass output and overall audio system performance. The amplifier includes several controls for fine-tuning the audio output, such as input level adjustment, a low-pass filter, a subsonic filter, bass boost, and phase control, allowing users to customize the sound to their preferences and vehicle acoustics.
Important Technical Specifications:
- Rated Output Power:
- 450 W x 1 at 4 ohms
- 650 W x 1 at 2 ohms
- 800 W x 1 at 1 ohm
- Peak Output Power: 1300 W
- Frequency Response: 10 – 300 Hz
- Input Sensitivity: 0.2 – 9.67 V
- Weighted Signal-to-Noise Ratio: 106 dB
- Harmonic Distortion: 0.05%
- Switchable Bass Boost Control (Bass Boost): 0/6/12 dB
- Subsonic Filter Adjustment Range: 10 – 40 Hz
- LPF Adjustment Range: 40 – 300 Hz
- Phase Adjustment Range: 0 – 180°
- Fuse: 2 x 30 A
- Unit Dimensions (L x H x W): 265 x 52 x 209 mm
Usage Features:
- High-Level Input: Allows connection to car stereos without RCA outputs, using wired inputs.
- Input Level (RCA): Adjustable from MIN to MAX to match the output of the head unit.
- Low Pass Filter (LPF): Variable from 40 Hz to 300 Hz, essential for sending only low frequencies to the subwoofer.
- Subsonic Pass Filter: Adjustable from 10 Hz to 40 Hz, helps protect the subwoofer from playing frequencies too low to reproduce effectively, which can cause damage.
- Bass Boost: Selectable at 0 dB, 6 dB, or 12 dB to enhance bass impact.
- Phase Control: Adjustable from 0 to 180 degrees to ensure proper phase alignment with other speakers in the system, preventing bass cancellation.
- Remote Control Jack: For connecting an optional remote control (not included) to adjust bass signal levels conveniently.
- LED Indicators: A green LED indicates power on, while a red LED signifies safety mode activation (due to short circuit, overload, or overheating).
- Fuse Protection: Integrated fuses protect the amplifier and the vehicle's electrical system from short circuits.
Installation and Connection:
- Power Terminals: Includes GND (ground), REM (remote turn-on), and +12V (power) terminals.
- Ground Connection: Connect to the vehicle's chassis, ensuring good contact by removing paint or insulation. The ground wire should be as short as possible.
- +12V Power Connection: Connect directly to the positive terminal of the car battery using a thick, multi-stranded copper cable (minimum 10 mm² cross-section). An in-line fuse (not included) must be installed within 50 mm of the battery.
- Remote Turn-On (REM): Connect to the remote output of the car stereo. If the stereo lacks a remote output, it can be connected to an external switch for manual power control.
- Input Connections:
- RCA Line-In: For connecting to the head unit's RCA output jacks.
- High-Level Input: For connecting to head units without RCA outputs.
- Speaker Output Terminals: Designed for mono output to a subwoofer (1-8 Ohm). Ensure correct polarity (+ to + and - to -) to avoid phase cancellation and bass suppression.
Volume Control:
- Initially, set the amplifier's volume control to minimum.
- Turn on the car stereo and set its volume to approximately 80% of its full power.
- Start playing audio and slowly increase the amplifier's volume until distortion is heard.
- Then, slightly reduce the amplifier's volume for a clean sound.
Maintenance Features:
- Safety Precautions:
- Read the manual carefully before installation and operation.
- Avoid dropping the device or exposing it to direct sunlight, high temperatures, or humidity.
- Do not disassemble the device; repairs should only be performed by qualified personnel.
- Prolonged exposure to sound pressure levels above 100 dB can cause permanent hearing damage.
- Installation Environment:
- Install the amplifier in a solid, hard surface that will not deform under load.
- Mount the amplifier on a side wall with the cooling fins vertical to ensure proper heat dissipation.
- Ensure adequate airflow around the cooling fins to prevent overheating.
- Avoid mounting the amplifier on the bottom of the car, where screws could pierce fuel lines or brake lines.
- Interference Reduction:
- Route power cables away from audio cables to minimize interference.
- Cleaning:
- Keep the device clean and free from dust and moisture.
The SM-CA1001M is designed for automotive use and is not intended for household or continuous 24/7 operation. The manufacturer reserves the right to change specifications and functions without prior notice for continuous product improvement.
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