SoundQubed Q4-150ABv2 16.0v Q Series 4 Channel Amplifier

Product Overview

Build a front-speaker and subwoofer system around one amplifier with the SoundQubed Q4-150ABv2 16.0V Q Series 4-channel amplifier. Its Class A/B design delivers up to 150W x 4 at 4Ω, with adjustable crossovers and bridged-channel capability for flexible system setup.

Key Features & Benefits

• Flexible power: Choose 150W x 4 at 4Ω, 220W x 4 at 2Ω, or 440W x 2 bridged at 4Ω for different speaker configurations.
• Adjustable filters: Variable high-pass and low-pass filters support precise frequency control, including bandpass configurations.
• Adjustable bass boost: Set 0–18 dB of boost at 45 Hz when you want to shape the low-frequency output.
• Remote gain control: The included remote knob has a clipping indicator for monitoring levels from the driver’s seat.
• 2Ω stereo stability: Run stereo channels down to 2Ω, or use bridged mode with a minimum 4Ω load.
• Protection circuits: Four-way protection circuits and MOSFET switching devices are built into the amplifier.

Technical Specifications

Why Choose This Product?

The Q4-150ABv2 gives you several ways to distribute power across a four-channel system. Use its channels for speakers, or bridge a pair when your setup calls for more power to a subwoofer. Adjustable high-pass and low-pass filters let you tailor channel frequency ranges to your system.

Its 105 dB signal-to-noise ratio and damping factor greater than 200 are useful specifications to consider when comparing amplifier options. The remote gain control also puts level adjustment within reach while you are in the driver’s seat.

Installation & Compatibility Notes

• Plan the load: Minimum impedance is 2Ω in stereo and 4Ω in bridged mode. Do not bridge into a load below 4Ω.
• Full-system example: The supplied configuration recommends channels 1/2 for front component speakers, high-pass filtered at 80–100 Hz, and channels 3/4 bridged for a subwoofer, low-pass filtered at 80 Hz.
• Four-speaker example: The supplied configuration recommends running all four channels at 2Ω for 220W per channel. Use the high-pass filter to limit low-frequency content to the speakers.
• Electrical requirements: The amplifier operates from 9V–16V and requires a 120A external fuse. Proper 4-gauge power and ground wiring is recommended for clean, reliable performance at full output.
• Mounting space: Allow for the amplifier’s listed overall dimensions of 22" x 9.5" x 2.63".

Frequently Asked Questions

Can the Q4-150ABv2 power speakers and a subwoofer?

Yes. The supplied setup example uses channels 1/2 for front speakers and bridges channels 3/4 for a subwoofer, with the filters set for those roles.

What is the minimum impedance in bridged mode?

The minimum bridged impedance is 4Ω. Stereo channels have a 2Ω minimum impedance.

What power does it produce at 2Ω?

Its listed 4-channel RMS output at 2Ω and 14.4V is 220W x 4.

Is a remote gain control included?

Yes. The remote gain control knob includes a clipping indicator.

What electrical provisions does installation require?

The amplifier has a 9V–16V working voltage range and requires a 120A external fuse. Proper 4-gauge power and ground wiring is recommended for full-output performance.

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