KAC-X650D - Car amplifier KENWOOD - Free user manual and instructions
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| Product type | 5-channel car amplifier |
| Brand | KENWOOD |
| Model | KAC-X650D |
| Category | Power amplifier |
| Max output power | 5 channels: 160 W × 4 (4 Ω) + 300 W × 1 (4 Ω); 3 channels: 240 W × 2 (4 Ω) + 320 W × 1 (2 Ω) |
| Rated power (12 V) | 5 channels 4 Ω: 40 W × 4 + 130 W × 1; 5 channels 2 Ω: 60 W × 4 + 200 W × 1 |
| Rated power (14.4 V) | 5 channels 4 Ω: 60 W × 4 + 200 W × 1; 5 channels 2 Ω: 80 W × 4 + 300 W × 1 |
| Frequency response | A/B channels: 5 Hz - 70 kHz; SUB channel: 15 Hz - 200 kHz |
| Total harmonic distortion | A/B channels: 0.006% (1 kHz); SUB channel: 0.2% (100 Hz) |
| Input sensitivity | 0.2 V (max) - 5.0 V (min) |
| Signal-to-noise ratio | A/B channels: 105 dB; SUB channel: 100 dB |
| Input impedance | 10 kΩ |
| High-pass filters (A/B) | 50 - 200 Hz (12 dB/octave, variable) |
| Low-pass filters (B/SUB) | 50 - 200 Hz (24 dB/octave, variable) |
| Subsonic filter (SUB) | 15 Hz (24 dB/octave) |
| Bass management system (B.M.S.) | OFF / +6 / +12 / +18 dB, with remote control possible |
| Operating voltage | 14.4 V (11 - 16 V possible) |
| Power consumption | 53 A (at 12 V, 4 Ω, 10% THD) |
| Dimensions (W × H × D) | 283 × 58 × 350 mm |
| Supplied accessories | Self-tapping screws, terminal covers, hex wrench |
| Maintenance | Wipe with a silicone cloth or a soft dry cloth |
| Built-in protection | LED indicator for overheating, short circuit, undervoltage, DC fault |
| Spare parts and repairability | Parts available from an authorized Kenwood dealer |
Frequently Asked Questions - KAC-X650D KENWOOD
What is the maximum power of the KAC-X650D amplifier?
In 5-channel mode, the maximum power is 160 W × 4 (4 Ω) + 300 W × 1 (4 Ω). In 3-channel mode, it reaches 240 W × 2 (4 Ω) + 320 W × 1 (2 Ω).
How to connect the amplifier in bridged mode?
For a bridged connection, use the SPEAKER OUTPUT terminals of the left (LEFT) and right (RIGHT) channels. The speaker impedance must be at least 4 Ω.
What does the yellow blinking LED indicate?
A yellow blinking indicates that the supply voltage is below 11 V. Check the battery, power cable, or battery capacity.
How to adjust the B.M.S. (bass control)?
The B.M.S. switch allows you to choose between OFF, +12 dB or REMOTE. In REMOTE position, the intensity and frequency shift can be controlled from the Kenwood head unit.
What is the minimum speaker impedance to connect?
For stereo connections and the SUB channel, the minimum impedance is 2 Ω. For a bridged connection, it is 4 Ω.
How to clean the amplifier?
Wipe the surface with a silicone cloth or a soft dry cloth. Do not use volatile solvents such as paint thinner or alcohol.
What to do if the fuse blows?
First disconnect the wire harness, check for short circuits, then replace the fuse with a new one of the same rating (30 A × 2).
Can the amplifier be used with a non-Kenwood head unit?
Yes, but the B.M.S. function in REMOTE mode requires a Kenwood head unit compatible with an EXT.AMP.CONT cable. For other functions, the amplifier is compatible with any source.
How to install the amplifier to avoid overheating?
Install the device in a well-ventilated area, do not cover the ventilation slots, and avoid places exposed to sunlight or excessive heat. The device heats up during normal use.
What is the power consumption of the amplifier?
The maximum consumption is 53 A at 12 V with a 4 Ω load and 10% distortion. Use a power cable of at least 8 mm² (AWG 8).
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