Amplifier JBL CLUB A5055
5-channel amplifier, 4 x 50 + 1 x 320 W RMS at 4 Ω, Class D
More about the product
More about the product
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JBL CLUB A5055
The JBL Club A5055 amplifier is a powerful yet highly versatile solution for complete vehicle audio including a subwoofer. This 5-channel amplifier combines power for front and rear speakers while offering a strong dedicated channel for a subwoofer, allowing you to easily build a full audio system with a minimum of components. With 4 × 50 W RMS + up to 500 W RMS for the subwoofer it provides enough power for clean, dynamic and energetic sound without distortion even at higher volumes.
The amplifier uses a Class AB + D combination, delivering a balanced trade-off between sound quality and efficiency. Adjustable crossovers (HPF/LPF) for precise frequency tuning according to the car installation, as well as an adjustable bass boost and phase switch to optimize subwoofer performance, are standard. With both high-level and low-level inputs, the amplifier can be easily connected to factory head units without additional modifications.
The compact design allows installation even in vehicles with limited space and built-in protection against overheating, short circuits or over-voltage ensures safe and reliable operation. The JBL Club A5055 is an ideal choice for those who want to significantly improve both power and sound quality while keeping a simple and efficient solution in a single amplifier.
Key features
- 5-channel amplifier for full vehicle audio including a subwoofer.
- Power: 4 × 50 W RMS for speakers and up to 500 W RMS for the subwoofer.
- Ability to bridge into 3-channel mode delivering up to 140 W RMS per channel.
- Class AB + D amplifier technology for the ideal combination of quality and efficiency.
- High-level and low-level inputs for easy connection to OEM radios.
- Adjustable high-pass and low-pass crossovers for precise sound tuning.
- Dedicated low-pass filter, bass boost and phase switch for the subwoofer.
- Wired remote control (RBC) for bass level control from the driver's seat.
- Compact dimensions suitable even for installations with limited space.
- Built-in protection against overheating, short circuit, over-voltage and under-voltage.
| Catalog number | CLUB A5055 |
| Brand | JBL |
| Links | Official web presentation |
| Energy class of the amplifierAmplifiers are divided into two basic classes: analog and digital . Analog amplifiers (A/B) have higher consumption requirements, but usually have a more natural sound. Digital amplifiers (D) have significantly lower consumption and higher efficiency, but the sound may not be as faithful as with classic analog amplifiers. | D |
| Number of amplifier channelsAmplifiers are divided into: - Monoblocks - 2-channel - 3-channel - 4-channel - 5-channel - 6-channel - multi-channel Each channel is used to power one speaker for the coaxial type, or one side if they are component speakers. Monoblock type amplifiers are mainly used for subwoofers. 2-channel are suitable for both subwoofers and, for example, the front pair of speakers in a car. 3-channel is used for front or rear speakers + subwoofer. 4-channel are used for front + rear speakers or 1 pair of speakers + subwoofer. 6 or 5-channel are used for 2 pairs of speakers + subwoofer, most often. Bridging means connecting the amplifier to a bridge, using the + pole from one channel and the - pole from the other channel. In most cases this is shown as "BRIDGED" on the amplifier. | 5 |
| RMS power into 4 ΩRMS power when loading speakers or subwoofer at 4 Ω. RMS power is the constant power of the amplifier and is one of the most important parameters when choosing an amplifier. | 4 x 50 / 2 x 140 W + 1 x 320 W |
| RMS power into 2 ΩRMS power when loading speakers or subwoofer at 2 Ω. RMS power is the constant power of the amplifier and is one of the most important parameters when choosing an amplifier. | 4 x 65 W + 1 x 500 W |
| Low-pass filter (LPF)LPF / LP or "low pass filter" offers the possibility to adjust the amplifier using a potentiometer so that the lower band plays only the frequencies in a certain band that you need. This filter is used to adjust the frequency range for the subwoofer, so that it does not overload or distort the sound. Example: Amplifiers most often have an LPF from 20 to 300 Hz. We recommend setting this potentiometer in the range of 45-80 Hz. | 32 - 320 Hz |
| Bass boostBass boost or bass enhancement. With this function, the bass itself can be emphasized, at a high level of bass boost, the speakers and the subwoofer can distort a lot and the sound will be worse than better. We therefore recommend using the "bass boost" function wisely. With maximum use of bass boost, there is a risk of damage to the speakers and thus to the subwoofer. | Yes |
| Phase shiftPhase shift is a linear electronic oscillator that produces a sinusoidal output. It consists of an inverting part of the amplifier such as a transistor. The feedback network "shifts" the phase at the output of the amplifier by 180 degrees to the oscillation frequency and gives positive feedback. The Phase shift filter produces a phase shift that increases with increasing frequency. This is usually used when the subwoofer sub-assembly is out with the magnet, or when two amplifiers are connected externally. Phase Shift is also used with active speaker wiring, where the time shift of the speakers is set. The point is that the subwoofer does not play the bass late, and for this reason better amplifiers offer this phase reversal option. | Yes |
| On-board voltage rangeThe ability of the amplifier to operate at a specified voltage. As the voltage decreases, so does the power of the amplifier. The ideal voltage in a car is between 13.8 and 14.4 V. | 9 - 16 V |
| The value of the fuses on the amplifierFrom the value of the fuses on the amplifier, you can get a true picture of the real performance of the amplifier. | 3 x 30A |
| High level inputsThe high-level input on the amplifier allows connection directly to the existing speakers in the car without additional purchase of an external high/low adapter. Important equipment in the case of installing an amplifier on an original car radio. | Yes |
| Automatic on and offThis function allows you to automatically switch on the amplifier. | Yes |
| Socket input terminalsFerrule terminals allow better wiring contact to the amplifier. It is also a more secure form of terminals. If you are tightening the sleeve terminals, we recommend retightening them after 1 day, as the connected cable gradually compresses. | Yes |
| Remote control included in the packageSome models of amplifiers also come with wired remote controls in the package, which on one side plug into the amplifier and on the other side you have a potentiometer that you can place anywhere in the cabin. A common place to place the remote control is under the steering wheel. The advantage is the regulation of power, and therefore volume, depending on driving conditions and the mood of the crew in the car. | No |
| Dimensions of the amplifier | 360 x 51.3 x 180 mm |
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