When designing a car audio sound system, impedance matching is the key point: you just need to know the nominal impedance and RMS power of each speaker in order to determine the appropriate amplifier for your sound system.
Basic Principle
- Parallel Impedance: When you connect several speakers with the same impedance in parallel, the equivalent impedance decreases.
- Always respect the minimum channel impedance (as specified by the manufacturer) to avoid overload, overheating, and distortion.
It is essential that your speaker has power equal to or greater than the RMS power specified by the amplifier.
Models and Their Capacities:
| Model | Channels | RMS Power per Channel | Nominal Impedance | Connection Possibilities |
|---|---|---|---|---|
| TS 400X4 | 4 @ 2 Ω 2 @ 4 Ω | 4X 100W @ 2 Ω 2X 200W @ 4 Ω | 2 Ω | PER CHANNEL: 4×4 Ω • 4×8 Ω • 8X4 Ω 3X8Ω BRIDGE: 2X4 Ω • 4X8 Ω • 1X4Ω • 1X8Ω |
| TS 800X4 | 4 @ 2 Ω 2 @ 4 Ω | 4 X 200W @ 2 Ω 2 X 400W @ 4Ω | 2 Ω | PER CHANNEL: 4×4 Ω • 4×8 Ω • 8X4 Ω 3X8Ω BRIDGE: 2X4 Ω • 4X8 Ω • 1X4Ω • 1X8Ω |
| TS 1200X4 | 4 @ 2 Ω 2 @ 4 Ω | 4 X 300 W @ 2 Ω 2 X 600 W @ 4 Ω | 2 Ω | PER CHANNEL: 4×4 Ω • 4×8 Ω • 8X4 Ω 3X8Ω BRIDGE: 2X4 Ω • 4X8 Ω • 1X4Ω • 1X8Ω |
Tips for Installation and Sound Quality
Proper Cables
- Use wire gauge compatible with the system (minimum 2.5 mm² for speakers) and secure connectors.
- For power supply, use compatible wire gauge: (4 mm²) for TS 400×4, (6 mm²) for TS 800×4, and (10 mm²) for TS 1200×4.
Load Distribution
- Whenever possible, balance the number of speakers across channels to equalize power consumption.
Ventilation
- Ensure free space around the amplifier for proper heat dissipation.
Gain Adjustment
- Calibrate the input level (GAIN) before increasing the volume to avoid clipping and protect the speakers.
Impedance Test
- Measure the equivalent impedance with a multimeter or tester before powering on the system.
Always check your speakers’ impedance before connecting them to the amplifier. This prevents incompatibilities and possible damage to both the speakers and the amplifier itself.
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