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Overview

The amplifier delivers 75 watts RMS per channel across four channels at 4 ohms, measured to CEA-2006 standards at 1% THD+N and 14.4 volts. Hertz Advanced D-Class technology provides a 10–35,000 Hz frequency response, while variable high-pass and low-pass filters offer adjustable crossover control from 50–5,000 Hz with a 12 dB/octave slope. Channels 3–4 also feature adjustable bass boost from 0–8 dB at 45 Hz, allowing you to tailor low-frequency output to your system.

Hertz SP 4.500 SPL Show 4-Channel Car Amplifier (SP 4.500)

Model: SP 4.500
Web Code: 20208497
Sold and shipped by | 4.6 seller rating (255 reviews)

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Warranty Information

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For Quebec residents: See the Availability Guarantee disclosure in the Specifications section below.

Hertz SP 4.500 SPL Show 4-Channel Car Amplifier

The Hertz SP 4.500 SPL Show 4-channel amplifier combines powerful output with an ultra-compact design, making it a practical choice for installations where space is limited. Featuring Hertz Advanced D-Class (ADC) technology, it delivers efficient performance with up to 87% efficiency while maintaining sound quality. Its compact footprint makes it suitable for cars, trucks, and motorcycles where a larger amplifier may be difficult to install.

Powerful 4-Channel Performance:

The SP 4.500 provides 90 watts RMS per channel at 4 ohms, delivering clean, controlled power for a range of speaker configurations. For systems that need more output, its bridged mode delivers 300 watts RMS x 2 at 4 ohms, giving you flexibility when planning your audio setup.

• 4-channel amplifier design

• 90W RMS x 4 at 4 ohms

• 300W RMS x 2 bridged at 4 ohms

• Hertz Advanced D-Class output stage

• Up to 87% efficiency

Ultra-Compact Installation:

Measuring just 192.7 x 130 x 49 mm, the SP 4.500 is designed to fit into tight installation spaces without sacrificing useful power. Its small size makes it suitable for under-seat installations, behind-seat setups, and other locations where space is at a premium.

• Compact dimensions: 192.7 x 130 x 49 mm

• Dimensions in inches: approximately 7.58 x 5.1 x 1.9

• Suitable for space-conscious vehicle installations

• Designed for cars, trucks, and motorcycles

Adjustable Audio Controls:

The SP 4.500 includes variable high-pass and low-pass filters to help tailor the amplifier's output to the connected speakers. Channels 3 and 4 also feature adjustable bass boost, allowing you to add low-frequency emphasis to suit your system.

• Variable high-pass and low-pass filters

• Filter adjustment range: 50–5,000 Hz

• Filter slope: 12 dB/octave

• Variable bass boost on channels 3–4

• Bass boost range: 0–8 dB at 45 Hz

Key Specifications:

• Amplifier Type: 4-Channel Class D

• RMS Power at 4 Ohms: 90W x 4

• Bridged RMS Power at 4 Ohms: 300W x 2

• Efficiency: Up to 87%

• Filter Range: 50–5,000 Hz

• Filter Slope: 12 dB/octave

• Bass Boost: 0–8 dB at 45 Hz on channels 3–4

• Dimensions: 192.7 x 130 x 49 mm / 7.58 x 5.1 x 1.9 in

For Quebec residents – Disclosure under the Consumer Protection Act

In compliance with Bill 29, Best Buy and third-party sellers on Best Buy Marketplace do not guarantee the availability of replacement parts, repair services, or maintenance information for any products. Coverage provided through any Best Buy Protection programs and applicable manufacturer warranties, if any, remain in place. Please contact the manufacturer directly for information about their availability guarantee.

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