Lexicon cx brochure

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Based on Lexicon's referencequality LX Power Amplifiers, the CX7 and CX5 represent a loweroutput version of their awardwinning counter parts. The CX amplifiers have THX Ultra2 certification and the same gorgeous industrial design as the other products in the Lexicon line they are a beautiful complement to any home theater. Available with seven or five channels, the CX amplifiers are designed with massive toroidal transformers and several oversized capacitors, allowing them to retain ample power reserves even when all channels aredelivering maximum output. Each channel uses four custom designed, handgraded output transistors to drive 140 watts into 8 ohms. They are compatible with loudspeaker impedances of 2 ohms and above. The CX amplifiers f eatureacon vection cooling system, which results in ultraquiet performance. An extensive protection system also makes them extremely reliable. Thermal protection monitors the temperatures of the chassis, main power transformer, and heat sinks, deactivating chan nels that exceed saf eoperating temperatur es.Current protection limits the quantity of cur rent deliv ered to the output transistors based on the amount of headroom available. DC protection prevents DC and frequen cies belo w10Hz from reaching the loudspeakers. In addition, the CX amplifiers offer protection against electrical and device failures, short cir cuits, wiring faults, and internal errors. To protect themselves and associ ated components, the amplifiers automatically deactivate if these condi tions occur . Dedicated multicolor channel status LEDs on the front panel provide instant notification if dangerous conditions arise. Each channel includes selectable balanced (XLR) or unbalanced (RCA) inputs. Heavyduty, goldplated output connectors allow the CX ampli fiers to accommodate a widerange of loudspeaker connectors, including bare wires, banana plugs, and spade connectors. In addition, a separate groundlift switch is provided for each channel to help eliminate the audible hum that sometimes results from multiple grounding paths. For even greater flexibility, a rear panel trigger input connector provides power control of the amplifiers from compatible associated components such as the MC12 and MC8 Digital Controllers. When one of these Lexicon digital controllers is connected, the power status of the digital controller and the CX amplifier can be synchronized for added conven ience . The CX7 and CX5 achieve the highest standards of power and per formance, delivering superior reproduction of music and film sound tracks. An impr essivecombination of 140watt channels, selectable bal anced or unbalanced inputs, and advanced protection features make the CX amplifiers capable of handling all but the most demanding applica tions.

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CX Specifications Audio Inputs CX7 Seven RCA, seven XLR CX5 Five RCA, five XLR Audio Outputs CX7 Seven pairs of goldplated binding posts CX5 Five pairs of goldplated binding posts Performance Output Power 140W at 8Ω,all channels driven 20Hz to 20kHz Minimum Speaker 2Ω Impedance Frequency Response 20Hz to 20kHz ±0.1dB; 10Hz to 100kHz +0.5/3dB THD Below 0.02% at 140W, 8 Ωall channels driven 20Hz to 20kHz Signalto 110dB, 22kHz bandwidth, unweighted (Ref 140W at 8 Ω) Noise Ratio IM Distor tion Below 0.03% at 140W ,8Ω Crosstalk 80dB at 1kHz, minimum Damping Factor 850 at 20Hz, minimum Input 2V input for 100W output at 8 Ω,balanced inputs Sensitivity 1V input for 100W output at 8 Ω,unbalanced inputs Input Impedance 20k Ω,balanced; 10k Ω,unbalanced Gain 23dB, balanced; 29dB, unbalanced Other Trigger Input 12V DC +/ 10% Power Requirements 120V 60Hz 15A (Domestic); 230V 50Hz 10A (Export) Dimensions Height (with feet) 6.09 (155mm) Width 17.3 (439mm) Depth 19.75 (502mm) Weight CX7 52.8lbs (23.8kg) CX5 47.1lbs (21.2kg) Rack Mounting Optional brackets are available for installing either amplifier in astandard 19inch equipment rack (three rack units required). Specifications subject to change without notice.