JBL Apex PA1254 4-Channel Powersports Amplifier with Class D Power - Black

JBL Apex PA1254 4-Channel Powersports Amplifier with Class D Power - Black

The JBL Apex PA1254 delivers efficient Class D power in a weather-resistant, ultra-compact design built for car, marine, and powersports audio systems. With four channels, selectable crossover settings, and a rugged aluminum chassis, it packs serious output into a footprint designed for tight spaces.

Powerful 4-Channel Class D Performance

Need strong output without a bulky amplifier, while the JBL Apex PA1254 keeps its design compact and efficient. Additionally, its Class D design delivers up to 1250 watts of peak power. Meanwhile, it produces 125 watts RMS x 4 at 2 ohms and 75 watts RMS x 4 at 4 ohms. Finally, bridged output reaches 250 watts RMS x 2 at 4 ohms, with less than 1% THD+N.

That flexibility makes the amplifier a practical match for a wide range of JBL car, marine, and powersports products. Its 20Hz–20kHz frequency response also supports full-range audio reproduction across the audible spectrum.

Ultra-Compact Aluminum Chassis

The JBL Apex PA1254 uses an ultra-compact aluminum chassis with a small footprint, giving you more freedom when space is limited. Why give up more room than necessary? Think of it as fitting substantial amplifier power into a smaller package instead of dedicating extra space to a larger enclosure.

Its industrial design also gives the amplifier a clean appearance. When the unit remains visible, JBL designed it to complement the vehicle's aesthetic instead of distracting from it.

Built for Harsh Outdoor Conditions

Powersports equipment can face conditions that ordinary electronics may never encounter. For that reason, the JBL Apex PA1254 uses conformal-coated, fully “marinized” circuit boards engineered to withstand harsh environments while maintaining reliable power delivery.

JBL also subjects its Apex amplifiers to Harman Standard Reliability Testing. The testing includes freezing, baking, shaking, ultraviolet light, salt spray, and extended operation at full power. It is a demanding process designed to prove the amplifier can handle challenging environments.

Selectable Front and Rear Crossovers

The JBL Apex PA1254 gives you flexible control over frequency distribution, while keeping system tuning simple. Additionally, the front channels offer all-pass or high-pass filtering options. Meanwhile, you can select 60Hz, 80Hz, or 120Hz crossover points. Finally, each setting uses a 12dB-per-octave slope for precise frequency management.

The rear channels add all-pass, high-pass, and low-pass filtering at the same 60Hz, 80Hz, and 120Hz frequencies. As a result, you can tailor the amplifier's output more easily to suit different speakers and system layouts.

High-Level and Low-Level Inputs

Flexible inputs help the JBL Apex PA1254 work with a wide range of audio sources. Speaker-level and low-level inputs allow the amplifier to integrate with just about any audio input, giving you more flexibility when connecting your system.

Performance Specifications

• Maximum power: 1250W peak
• RMS power at 2 ohms: 125W x 4, <1% THD+N
• RMS power at 4 ohms: 75W x 4, <1% THD+N
• Bridged RMS power at 4 ohms: 250W x 2, <1% THD+N
• Front high-pass filter: Off, 60Hz, 80Hz, or 120Hz at 12dB/octave
• Rear filter: All-pass, high-pass, or low-pass at 60Hz, 80Hz, or 120Hz at 12dB/octave
• Frequency response: 20Hz–20kHz
• Signal-to-noise ratio: Greater than 75dB, referenced to 1W output at 4 ohms
• Fuse rating: 40A

What's in the Box?

The JBL Apex PA1254 includes the amplifier along with useful hardware and accessories for connecting and securing the unit.

• 1 x Amplifier
• 1 x Stainless steel mounting hardware
• 4 x High-level input adapters
• 4 x Zip ties
• 1 x Spare fuse
• 2 x JBL stickers
• 1 x Quick start guide

Compact Power for Car, Marine, and Powersports Audio

The JBL Apex PA1254 combines four-channel Class D power, flexible crossover controls, weather-resistant construction, and a compact aluminum chassis in one amplifier. If you need substantial output without giving up unnecessary space, its combination of power and durability makes it a strong fit for JBL car, marine, and powersports systems.

Frequently Asked Questions

How much peak power does the JBL Apex PA1254 produce? The amplifier is rated for up to 1250 watts of peak power.

What is the RMS output of the JBL Apex PA1254 at 2 ohms? It delivers 125 watts RMS x 4 at 2 ohms with less than 1% THD+N.

Can the JBL Apex PA1254 be bridged? Yes. It can deliver 250 watts RMS x 2 at 4 ohms when bridged, with less than 1% THD+N.

What crossover settings does the JBL Apex PA1254 provide? It offers selectable 60Hz, 80Hz, and 120Hz crossover points at 12dB per octave, with front high-pass and rear all-pass, high-pass, or low-pass options.

Is the JBL Apex PA1254 designed for marine and powersports use? Yes. Its conformal-coated circuit boards, compact aluminum chassis, and environmental reliability testing are designed for harsh car, marine, and powersports environments.