C46
STEREO PREAMPLIFIER
- Programmable Balanced Input
- Eight Programmable Source Selections
- One Main and Two Switched Outputs
- Logic Driven Electromagnetic Switching
- Fiber-Optic Light Diffuser Illumination
- Exclusive McIntosh Eight Frequency
- Equalizer Circuit
- Input Level Matching
- Separate Listen and Record Input Selection
- Dual Programmable Processor Loops
- Precision Digitally Controlled Volume Attenuator
- Blue 16 Character VF Display
- Gold Plated Connectors
- Precision Resistors and Capacitors
- Wide Dynamic Range
- Remote Power Control
- Data Output Ports
- Front Panel Headphone Jack
An elegant combination of audio purity and flexible control, the C46 Stereo Preamplifier features eight programmable source selections and logic driven electromagnetic switching for unsurpassed flexibility. It includes one main and two switched outputs, plus separate Listen and Record selectors with independent Listen and Record processor loops. An 8-band Program Equalizer helps to tune the sound to the listening room, while a programmable Balanced Input enables use with the highest quality sources. Fiber-optic / LED frontpanel illumination shows off your C46 beautifully. Eight inputs including a Dual Aux/Moving Magnet Phono input give you complete flexibility.
Silent Electromagnetic Switching
McIntosh Silent Electromagnetic Switches, located literally at the input panel, eliminate the need for audio signals to travel through any internal wiring where it would be subject to noise pickup. The state-of-the-art switches consist of ruthenium contacts the finest conducting material known which are sealed within a glass tube containing an inert oxygen-free gas that eliminates all possibility of contamination and results in a distortion-free switch that never needs cleaning. The glass tube is enclosed within a multi-layer copper coil, which provides the means to actuate the switch and also provides additional shielding. The entire assembly is finally encased in a shock-absorbent plastic housing for protection.
VRV (Variable Rate Volume) Digitally Controled Attenuator
The output attenuator controls volume over 214 steps of 0.5dB each with accuracy within 0.1dB. The volume vs. rotation rate varies as preamplifier gain varies and
attenuation changes occur at the zero crossings of the audio signal to prevent audible artifacts during adjustment.
| SPECIFICATIONS | |
| FREQUENCY RESPONSE | 20Hz to 20kHz, +0 / -0.25dB |
| TOTAL HARMONIC DISTORTION | 0.002% max. from 20Hz to 20kHz |
| A-WEIGHTED SIGNAL-TO-NOISE RATIO | Phono: 86dB, High Level: 97dB |
| RATED OUTPUT VOLTAGE | 5 Vrms at balanced outputs 2.5 Vrms at unbalanced outputs |
| INPUT IMPEDANCE
|
Phono, MM: 47K ohms, 65pf High Level: 47K ohms balanced 22K ohms unbalanced |
| OUTPUT IMPEDANCE
|
240 ohms unbalanced 480 ohms balanced |
| MAXIMUM VOLTAGE OUTPUT
|
10.0 Vrms unbalanced 20 Vrms balanced |
| SENSITIVITY (for rated output)
|
High Level: 450mV unbalanced, 900mV balanced Phono: 4.5mV |
| POWER REQUIREMENTS 120V 50/60Hz, 50 watts
|
DIMENSIONS (H X W X D) 5 3/8” (13.65 cm) x 17 1/2” (44.45 cm) x 19” (48.26 cm) Panel clearance required in front of mounting panel is 1 3/4 inches (4.5 cm) for connectors |
| WEIGHT
|
26 lbs. (11.79kg) net
|