McIntosh MA6500
Introduce yourself to McIntosh quality with the MA6500 Integrated Amplifier
Hardly a "slimmed down" model, the MA6500 incorporates premium McIntosh technologies, including Power Assurance and Silent Electromagnetic Switching, as well as several features that will assist you as you integrate and expand your McIntosh system.
At the heart of MA6500's Power Assurance System is Power Guard clipping protection, input volume reduction that acts literally at the speed of light to keep distortion below 2% and deliver clipping-free output. Sentry Monitor current protection, Thermal Cutout, Turn-On Delay and Soft start inrush protection join Power Assurance to protect and prolong the life of your equipment.
Silent electromagnetic switching gives the MA6500 distortion-free switching. A glass tube containing oxygen-free gas and two signal leads sits in a copper coil and shock absorbent plastic, awaiting DC voltage to create a magnetic field that delivers the input signal and completes the circuit.
Performance Features
Power Output
The MA6500 consists of two separate power amplifier channels, each capable of 200 watts and a sophisticated control center in one compact unit with less than 0.005% distortion.
Power Guard
Both channels include the patented McIntosh Power Guard circuit that prevents the amplifier from being overdriven into clipping with its harsh distorted sound that can also damage your valuable loudspeakers.
Electronic Input Switching
Digital Logic integrated circuits drive Electromagnetic switches on all six inputs and operating functions for reliable, noiseless, distortion free switching.
Speaker Switching
Front panel Speaker push-buttons control two switched outputs that allow you to send signals to two separate pairs of loudspeakers.
Sentry Monitor and Thermal Protection
McIntosh Sentry Monitor power output stage protection circuits ensure the MA6500 will have a long and trouble free operating life. Built-in thermal protection circuits guard against overheating.
Illuminated Power Meters
The illuminated power output watt meters on the MA6500 are peak responding, and indicate the power output of the amplifier
Specifications
Power Output: Minimum sine wave continuous average power output per channel, all channels operating is:
200 watts into 4 Ω load
120 watts into 8 Ω load
Rated Power Band: 20 Hz to 20,000 Hz
Maximum Total Harmonic Distortion (at any power level from 250 milliwatts to rated power output is): 0.005% for 4 or 8 Ω loads
Dynamic Headroom: 2.4 dB
Frequency Response
+0, -0.5 dB from 20 Hz to 20,000 Hz
+0, -3 dB from 10 Hz to 100,000 Hz
Sensitivity
Phono : 2.5 mV for 2.5 V rated output (0.5 mV IHF)
High Level : 250 mV for 2.5 V rated output (50 mV IHF)
Power Amplifier Input : 2.5 V for rated output
Signal To Noise Ratio (A Weighted)
Phono Input : 90 dB (84 dB IHF) below 10 mV input
High Level : 100 dB (90 dB IHF) below rated output
Power Amplifier : 110 dB below rated output
Maximum Intermodulation Distortion if instantaneous peak output per channel does not exceed twice the rated output, for any combination of frequencies from 20 Hz to 20,000 Hz, with all channels operating is: 0.005% for 4 or 8 Ω loads
Input Impedance
Phono : 47 K Ω , 65 pF
High Level : 22 K Ω
Maximum Input Signal
Phono : 90 mV
High Level : 8 V
Preamplifier Maximum Voltage Output
Phono : 8 V at tape output
High Level : 8 V at tape output
Main Out : 8 V at preamp output
Voltage Gain
High Level to Tape: 0 dB
High Level to Main: 20 dB
Damping Factor
120 at 4 Ω
230 at 8 Ω
Tone Controls
Bass : ± 12 dB
Treble : ± 12 dB
Power Requirements
100 Volts, 50/60Hz at 7.4 amps
110 Volts, 50/60Hz at 6.2 amps
120 Volts, 50/60Hz at 6.2 amps
220 Volts, 50/60Hz at 3.1 amps
230 Volts, 50/60Hz at 3.1 amps
240 Volts, 50/60Hz at 3.1 amps
Overall Dimensions
Front Panel: 17-1/2 inches (444,5 mm) wide, 7-1/8 inches (181,0 mm) high.
Depth behind front mounting panel is 16-1/2 inches (419,1 mm).
Clearance required in front of the Front Panel is 1 inch (25,4 mm) for knobs.
Weight
33.8 Kg (74.5 pounds) net, 41.7 Kg (92.5 pounds) in shipping carton