ESX QL800.8 - 8-channel amplifier digital

Compact QUANTUM amplifiers in Class D technology have been the spearhead of the ESX program for years. The range extends from the 4 x 300 watt RMS powerful and EISA Award-winning QE1200.4  to 1 ohm stable monoblocks, right up to the palm-sized QS- TWO, which fits anywhere. The large selection allows for a wide range of combination options. But that's not all: ESX is now expanding the Quantum range with two additional Class D multi-channel amplifiers, which boast a whopping 6 x or 8 x 125 watts RMS at 2 ohms, top sound and the latest features.

The new models in the QUANTUM QL  series occupy a special position in the ESX range in this context. Ideally, 6- and 8-channel amplifiers are configured so that they do not drive high-performance 12- or 15-inch subwoofers, but rather develop their potential in 2- or 3-way systems. ESX multi-channel amplifiers are designed to use the many channels and setting options to optimally supply tweeters, midrange speakers or bass-midrange speakers. In this configuration, they have a much higher power than might be expected at first glance - specifically up to 160 watts RMS per channel. How is that possible? It's very simple! By actively distributing the frequency ranges to several channels or loudspeakers in the vehicle, all loudspeakers never play at full power at the same time. In this case, the amplifier uses the power reserves of the generous power supply, which all channels can access if necessary. ESX calls this feature Dynamic Headroom Technology or DHR for short. If you decide to use four 2-channel models instead of an 8-channel amplifier, for example, the DHR function or dynamic power gain would not be possible. This is because the power supply of the first amplifier is not able to drive the channels of the second amplifier. In this sense, 6- and 8-channel ESX amplifiers have a dynamic advantage in multi-channel applications.

If, for budget reasons, you still plan to use just one Quantum amplifier to provide a complete sound system for the vehicle, including a subwoofer, this is no problem either, thanks to the features and the ability to bridge all channels. It is even possible to control the bass level using a wired bass remote. For the QL800.6, we recommend bridging channels 5/6 with 250 watts of mono power. The QL800.8 can do even more, and thanks to the copy function, it can provide 2 x 250 watts RMS at 4 ohms on the bridged channels 5/6 and 7/8, including bass control. If you want even more comfort and performance, combine the new multi-channel amps with a monoblock QL800.1, for example, which then confidently delivers up to 800 watts RMS at one ohm.

Features

• Advanced Class D technology with very high efficiency
• Dynamic Headroom technology*
• Max. DHR power per channel up to 160 watts RMS @ 2 Ω
• Selected and audiophile-tuned components
• Solid aluminum heat sink
• Heavy cast aluminum side panels
• High-level inputs with Error Protection System (EPS) 
• Automatic switch-on function
• Start/Stop Ready
• MOSFET PWM power supply
• 3-way protection circuit
• Compact bass level remote control

Technical data

• 8-channel Class D digital amplifier
• 8 x 80/125 Watt RMS @ 4/2 Ω
• 4 x 250 Watt RMS @ 4 Ω bridged
• HPF 50-5000 Hz (CH1/2 + CH5/6)
• HPF 10-500 Hz (CH3/4 + CH7/8)
• LPF 50-5000 Hz (CH3/4 + CH7/8)
• Copy mode CH7/8 > CH5/6
• RCA inputs via Molex
• RCA outputs via Molex
• Bandpass function  (CH3/4 + CH7/8)
• Input selector switch CH2/4/6/8
• Dimensions 285 x 47 x 170 mm
• Efficiency up to 87%

* Dynamic Headroom

ESX multi-channel amplifiers use the innovative "Dynamic Headroom" (DHR) technology to achieve a higher maximum RMS output power in typical multi-channel applications. This technology shows its strengths especially when not all channels require full power across the entire frequency spectrum at the same time. More information in the user manual.