• Lexicon-ZX-7-front
  • Lexicon-RX-7-rear
  • Lexicon-ZX-7-front
  • Lexicon-ZX-7-rear
  • Lexicon-ZX-7-front
  • Lexicon-RX-7-rear
  • Lexicon-ZX-7-front
  • Lexicon-ZX-7-rear

Lexicon ZX-7 7-Channel Power Amplifier

Raising the Standard for Ultrahigh-end Luxury Audio

This is a reference-quality amplifier designed to meet the highest standards of power and performance under the most extreme operating conditions. Equipped with advanced thermal, current, DC, and speaker protection, your new amplifier delivers reliable and exceptional performance with most loudspeakers, including mismatched, reactive, and unusual loads. With embedded protection against short circuits, component failures, mis-wiring, and internal faults, the incredible power and wide-ranging flexibility of the ZX-7 and RX-7 amplifiers confirm that they are at home in the most sophisticated and demanding home theaters.

Both the ZX-7 and RX-7 are fully balanced power amplifiers from input to output with completely symmetrical circuit design. In other words, each channel consists of two complete amplifier circuits; one driving the positive input signal and the other driving the negative input signal. With 7 channels, this translates into 14 separate amplifier circuits per chassis. The advantage of this topology over single-ended designs is that it exhibits lower noise, lower distortion, immunity from stray electronic fields and anomalies in the input signal from outside interference. This results in significant audible benefits including increased overall clarity and more pronounced differences between soft and loud passages.

Internally, the ZX-7 and RX-7 both utilize two massive toroidal transformers and lots of filter capacitance to ensure rock-solid lowfrequency reproduction and ample power reserves. The ZX-7 delivers 300 Watts per channel into 8 Ohms, while the RX-7 delivers 200 Watts per channel into 8 Ohms. Equipped with gold-plated speaker output connectors, the rear panel includes balanced or unbalanced audio input via RCA and XLR connectors. A trigger input connector allows the amplifiers to be controlled with associated components such as the MC-12HD or MC-8 Digital Controllers. The ZX-7 and RX-7 amplifiers include advanced optically coupled protection for each channel.

Features and Benefits

ZX-7: 300 Watts per channel @ 8 Ohms

Dual oversized toroidal power transformers with extraordinarily low DC resistance and thermal protection

High-power supply voltage for extra headroom at the outputs

Stable with mismatched, reactive, or unusual loads

Thermal protection against overheating

Speaker protection against DC and frequencies below 10Hz

Protection against short circuits, device failures, mis-wiring, and internal faults

Trigger input for power control from an external device

Gold plated input and output connectors

RCA and XLR inputs

Rack-mount option available

Noise elimination

Delayed audio turn-on to eliminate noises from driving equipment

Completely symmetrical circuit design which ensures optimal audio sonality

Hefty power supplies with lots of filter capacity ensures rock-solid bass

High damping factor (no output relays) ensure realistic, impressive bass transients

Advanced protection circuitry ensures reliability under any sort of user abuse

Detailed Specifications:

FREQUENCY RESPONSE:  20Hz to 20kHz +0.1dB/-0.5dB; 10Hz to 40kHz +0.1dB/-1.5dB



INPUT SENSITIVITY:  1V for 176W out @ 8 Ohms

RATED OUTPUT POWER INTO 4 OHMS:  450W RMS per channel into 4 Ohms from 20Hz to 20kHz

RATED OUTPUT POWER INTO 8 OHMS:  300W RMS per channel into 8 Ohms from 20Hz to 20kHz

SIGNAL-TO-NOISE RATIO:  Greater than 100dB, ref 125W/8 Ohms (30kHz bandwidth)

TOTAL HARMONIC DISTORTION (THD):  Less than 0.05% at full power ratings

CROSSTALK:  Greater than -80dB @ 1kHz (30kHz bandwidth)

GAIN:  Minimum 31dB

DAMPENING FACTOR:  Greater than 400 from 10Hz to 400Hz

POWER REQUIREMENTS:  120V 60Hz 12 Amp (domestic) 230V 50Hz 7 Amp (export)

SPEAKER CONNECTIONS:  7 pairs of heavy-duty, gold-plated binding posts

SIZE:  HEIGHT – 9.5″ x WIDTH – 17.2″ x DEPTH – 20.3″ (including handles) 19.3″ (not including handles)

WEIGHT:  138 pounds (62.7 kg)

ACCESSORIES: Optional brackets are available for mounting the amplifier in a standard 19-inch equipment rack


Documentation to be added soon . . .