Overview
Equipped with an over-sized toroidal transformer and individual power supplies for each of its seven channels, the GX-7 combines considerable output with quiet, low-distortion operation. Because each channel has its own power supply, the GX-7 has significantly improved channel separation. Intended for systems where the additional output of the RX-7 or the ZX-7 is not necessary, the GX-7 – with 125 watts per channel into 8 ohms - has more than enough power to drive most multi-channel speaker systems. When driving a 4 ohm load, the output of the GX-7 increases to an impressive 188 watts per channel.
In order to facilitate easy system integration, the GX-7 includes a 12-volt trigger input on the rear panel so that it can be powered up remotely buy a separate device with an output trigger, such as a Lexicon Digital Controller.
Specification
| Audio Inputs and Outputs |
| GX-7 Inputs | 7 RCA |
| GX-7 Outputs | 7 pairs of heavy-duty, gold-plated binding posts |
| Performance |
| Output Power | 125W RMS per channel into 8from 20Hz to 20kHz |
| 188W RMS per channel into 4 |
| from 20Hz to 20kHz |
| Minimum Speaker Impediance | 4 |
| Frequency Response | 20Hz to 20kHz +0.1dB/-0.5dB |
| 10Hz to 40kHz +0.1dB/-1.5dB |
| THD | Less than 0.05% at full power ratings |
| Signal-to-Noise Ratio | Greater than 100dB, ref 125W/8 Ohms (30kHz bandwidth) |
| IM Distortion | Less than 0.05% at full power ratings |
| Crosstalk | Greater than -80dB @ 1kHz (30kHz bandwidth) |
| Damping Factor | Greater than 200 @ 20Hz (ref 8 Ohms) |
| Input Sensitivity | 1V for 100W out @ 8 |
| Input Impedance | Minimum 10K |
| Gain | Minimum 28dB |
| Other |
| Trigger Input | 3.3 to 24 Volts DC ± 10%, 3.5mm T/S jack |
| Power Requirements | 120V 60Hz 12 Amp (domestic) |
| 230V 50Hz 7 Amp (export) |
| Dimensions and Weight |
| Height (with feet) | 5 inches |
| Width | 17.3 inches (440mm) |
| Depth | 19.5-inches (including handles) |
| 17.12-inches (not including handles) |
| Weight | 51 pounds (23.1 kg) |
| Rack Mounting | Optional brackets are available for mounting the amplifier in a standard 19-inch equipment rack |
| Requires 3 Rack Units |
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About the brand
Lexicon manufactures high-performance audio/video components, including the flagship MC-12 surround controller, and from the company's inception in 1971 to the present day, Lexicon has been recognized as a leader in digital audio processing. The company's ground-breaking multichannel technologies such as LOGIC 7 are found in high-end residential home theaters and automotive systems around the world.
Warranty Information: Processors - 3 years, Players - 1 year, Amplifiers - 5 years. A valid serial number is required for warranty coverage.
Reviews
Lexicon
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