The Kenwood KSC-SW11 is an active subwoofer car speaker designed to enhance the low-frequency audio output of a vehicle’s sound system. This device, with a peak power of 150 W, incorporates a built-in amplifier, simplifying installation by eliminating the need for a separate amplifier unit. It features a wired remote control for convenient operation and accepts input via RCA connections. Installation requires careful consideration of placement and wiring to ensure optimal performance and safety.
Product Specifications
The Kenwood KSC-SW11 possesses the following specifications, as detailed in the provided documentation:
- Peak Power: 150 W
- Dimensions: 190 mm (width) x 70 mm (depth) x 280 mm (height)
- Weight: 2800 g
- Control Interface: Wired remote control
- Input Connections: RCA
- Included Accessories: Wired remote control, 5m connection cable, 4.3m speaker cable, Mounting parts A & B, Machine screws (various sizes), Adhesive-backed Velcro strips.
Installation Considerations
Proper installation is crucial for both performance and safety. The documentation emphasizes several key considerations:
- Location: The subwoofer should be installed in a location that does not obstruct vehicle operation, entry, or exit. Suitable locations include under a seat or in the trunk.
- Environmental Factors: Avoid installing the speaker in areas exposed to direct sunlight, excessive heat, or humidity. Installation in locations susceptible to water or moisture should also be avoided. Unstable locations or areas prone to dust are also unsuitable.
- Wiring Safety: Ensure that speaker wires are connected to appropriate speaker connectors separately. Sharing the negative wire or grounding speaker wires to the vehicle’s metal body can lead to device failure.
- Structural Integrity: When creating mounting holes, verify that no hazardous components (gasoline tank, brake lines, wiring harnesses) are present on the opposite side of the surface. Exercise caution to avoid scratches or damage to the vehicle.
- Fuse Protection: If the fuse blows, it must be replaced with a fuse of the stipulated size (amperage) as indicated on the fuse box. Using incorrect fuse sizes can create a fire hazard. The documentation references checking the vehicle’s instruction manual for fuse replacement procedures.
- Grounding: The documentation notes that a secure ground connection may not be established on painted metal surfaces.
Connecting to the Car Stereo
The KSC-SW11 connects to the car stereo using RCA cables. If the car stereo’s output consists of a single RCA connection, an adapter cable converting this to two RCA connections is required. Failure to use such an adapter will reduce the subwoofer’s power output by half. Securely connect the subwoofer’s input terminals to the car stereo’s preamp output or subwoofer output, ensuring correct polarity (positive to positive, negative to negative).
Remote Control Installation
The KSC-SW11 includes a wired remote control for convenient operation. The remote control should be installed in a location that does not interfere with driving. It should also be protected from direct sunlight and heat from the vehicle’s heater. Installation involves attaching the remote control housing to a suitable surface using the provided adhesive-backed Velcro strips. The documentation advises cleaning the surface before applying the strips.
Operational Adjustments
The KSC-SW11 offers several adjustable settings to fine-tune the audio output:
- Bass Boost: A bass boost control dial located on the side of the speaker allows users to increase or decrease the bass level. Experimentation with different settings is recommended to achieve the desired sound.
- Frequency Adjustment: The remote control includes a frequency adjustment control, allowing users to adjust the cutoff frequency.
- Phase Adjustment: A phase switch on the remote control allows users to select the phase.
- Input Level Control: The documentation advises checking and adjusting the input level control to prevent distortion. Setting the input level too high can result in distorted sound.
Troubleshooting
If the KSC-SW11 produces distorted sound, the following steps should be taken:
- Input Level: Verify that the input level control is properly adjusted and not set too high.
- Cable Connections: Ensure that all cables are securely connected.
- Source Audio: Confirm that the source audio itself is not distorted.
Safety Precautions
The documentation outlines several safety precautions:
- Intended Use: The product should only be used for installation in a vehicle.
- Fuse Replacement: Only replace a blown fuse with a fuse of the same amperage rating.
- Cleaning: Do not use gasoline, naphtha, or solvents to clean the speaker. Use a soft, dry cloth.
- Wiring: Connect speaker wires to appropriate speaker connectors separately.
- Installation Location: Avoid installing the speaker in locations that could obstruct vehicle operation or expose it to hazardous conditions.
Compliance Information
The documentation includes declarations of conformity related to the EMC directive 2014/30/UE and the RoHS directive 2011/65/UE. It also provides information regarding the proper disposal of old electrical and electronic equipment in countries with separate collection systems.
Conclusion
The Kenwood KSC-SW11 active subwoofer provides a convenient solution for enhancing the bass response of a vehicle’s audio system. Successful installation requires careful attention to placement, wiring, and safety precautions. Proper adjustment of the controls allows users to customize the sound to their preferences. Adhering to the guidelines outlined in the provided documentation will ensure optimal performance and longevity of the device.