Yamaha CX-1 / CX-2 (1993/1994)

 CX-1 CX-2 Pre-amplifier

ToP-ART™  Total Purity Audio Reproduction Technology

The fundamental reason behind the high performance of Yamaha audio components is a comprehensive design philosophy that we call ToP-ART. It dictates that every factor that could affect performance is analyzed and optimized. From circuit design to individual internal parts to feet and knobs, nothing is left to chance. With the result that each component attains its full potential, so you enjoy the music the way the artist meant it to be heard.

The Direct Path to Optimum Signal Purity

The photo below of the CX-1's interior shows a conspicuous application of the ToP-ART concept. The path the audio signal traveles is straight and direct, so from beginning to end, it encounters the last possible amount of interference.  The entire interior layout is symmetrical and logical, resulting in extremely high 85 dB channel separation and ultra-low distortion of 0,002%. And for the ultimate in signal purity, you can engage the Pure Direct Switch, causing the signal to bypass teh tone control circuitry.

 High Quality Parts and Materials

In the upper reaches of audio component performance, small details and even materials take on increasing importance. Because gold is an excellent conductor and not susceptible to corrosion, these components have gold plated input terminals and headphone jacks. The CX-1 goes a step further, with 2-pin gold-plated solid brass CD and Pre Out terminals for large-size cables. It also uses extremely thick gold-plated wiring for signal routing. The front and side panels as well as knobs, are made of extruded aluminum rather than cheaper materials likely to resonate. Even the nuts and bolts are special types, used only in our separate components. Our commitment to quality was total, and the results are worth hearing.

 Versatile Control Centers

The Cx-1 allows you to select seven different inputs; Cd, tuner, phono, aux, tape 1, 2, 3. It also has a Rec Out Selector for direct selection of the source to be recorded and three-way tape copying. This means you can listen to one source while recording another.

The CX-2 has inputs for two tape decks and for two VCRs, as well.It also provides a Rec Out Selector.

Both components come with a special Power Link cable for connecting them to the MX-1 or MX-2, so the power amp will turn on and off with the preamp.

 Other Notable Features

Low-noise precision 4-gang Master volume control

High accuracy Twin-element phono EQ amplifiers

Switchable phono subsonic filter eliminates the rumble which some turntables may produce.

Center defeat Bass and Treble controls

Remote Controllable, Motor-driven Volume Control and Input Selector eliminate the noise and distortion inherent in electronic switching systems.

20 dB Volume Control Amplifier Using Pure Capacitive Negative Feedback Circuitry (CX-1)

Continuously Variable Loudness Control maintains natural tonality at all listening levels (CX-2)

Extra-Large, Anti-Vibration (XL-AV) Feet specially designed to ensure that external vibrations cannot affect amplifier performance.

30-key Remote Control (CX-1)

63-Key learning-Capable remote Control (CX-2)

Yamaha System Remote Control Capability; allows you to control the major function of other Yamaha system components from the amplifier's remote unit.

 CX-1 Specifications

Input Sensitivity/Impedance

Phono MC : 100 μV/1 k, 220 ohms

Phono MM : 2,5 mV/ 47 kohms

CD, Aux, Tuner, Tape : 150 mV/47 kohms

Phono Maximum Inout Level MM/MC:  7/180 mV (1kHz, 0,05% THD)

Output Level/Impedance

Rec Out : 150 mV/2,5 kohms

pre Out : 1,5 V/47 ohms

Maximum Output Voltage:  10 V (20 - 20,000 Hz, 1% THD)

Headphone Rated Output:  4,5 V/68 ohms (RL=100 ohms)

Frequency Response:  20 - 20,000 Hz,  ±0,2 dB

RIAA Equalization Deviation (Phono MC/MM):  ±0,2 dB/±0,2 dB

Total Harmonic Distortion (20 to 20,000 Hz)

Phono MC to RecOut (3V) : 0,003%

Phono MM to RecOut (3V) : 0,002%

CD, etc to Pre Out (3V) : 0,002%

Signal-to-Noise ratio (IHF-A-Network)

Phono MC (500 μV Input Shortrd) : 90 dB

Phono MM (5 mV Input Shorted) : 95 dB

CD (Shorted) : 110 dB

Residual Noise (IHF-A-Network):  1,0 μV

Channel Separation (vol. -30 dB)

Phono (Input Shorted, 1 kHz/10 khz) : 80/70 dB

CD etc (Input 5,1 kohms terminaled, 1 kHz/10kHz): 85/65 dB

Filter Characteristics (Subsonic):  15 kHz (-18 dB/oct)

Audio Muting:  -20 dB

Gain Tracking Error (0 to -60 dB):  2 dB

Dimensions (w x H x D):  438 x 86 x 405 mm (17-1.4 x 3-3/8 x 15-15/16 inch)

Weight:  8,8 kg (19 lbs, 6 oz)

CX-2 Specifications

Input Sensitivity/Impedance

Phono MC : 100 μV/100 ohms

Phono MM : 2,5 mV/ 47 kohms

CD, Aux, Tuner, Tape : 150 mV/47 kohms

Phono Maximum Inout Level MM/MC:  6/180 mV (1kHz, 0,05% THD)

Output Level/Impedance

Rec Out : 150 mV/2,5 kohms

pre Out : 1,5 V/47 ohms

Maximum Output Voltage:  10 V (20 - 20,000 Hz, 1% THD)

Headphone Rated Output:  4,0 V/68 ohms (RL=100 ohms)

Frequency Response:  20 - 20,000 Hz,  ±0,2 dB

RIAA Equalization Deviation (Phono MC/MM):  ±0,3 dB/±0,2 dB

Total Harmonic Distortion (20 to 20,000 Hz)

Phono MC to RecOut (3V) : 0,004%

Phono MM to RecOut (3V) : 0,002%

CD, etc to Pre Out (1,5V) : 0,002%

Signal-to-Noise ratio (IHF-A-Network)

Phono MC (500 μV Input Shortrd) : 82 dB

Phono MM (5 mV Input Shorted) : 94 dB

CD (Shorted) : 110 dB

Residual Noise (IHF-A-Network):  1,0 μV

Channel Separation (vol. -30 dB)

Phono (Input Shorted, 1 kHz/10 khz) : 75/65 dB

CD etc (Input 5,1 kohms terminaled, 1 kHz/10kHz): 75/60 dB

Filter Characteristics (Subsonic):  15 kHz (-18 dB/oct)

Audio Muting:  -20 dB

Gain Tracking Error (0 to -60 dB):  2 dB

Video Input Sensitivity/Impedance:  1 Vp-p/75 ohms

Video Output Level/Impedance:  1 Vp-p/75 ohms

Dimensions (w x H x D):  438 x 86 x 319 mm (17-1.4 x 3-3/8 x 12 inch)

Weight:  5,4 kg (11 lbs, 14 oz)