STATUS - SOLD
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Description :
The electrical and mechanical design of the McIntosh MC7300 power amplifier is the result of the many years of engineering and manufacturing experience. This experience along with the meticulous attention to design and product details, makes the MC7300 one of the finest amplifiers ever produced by McIntosh. The use of 10 complimentary connected output transistors per channel, allows not only full power output into normal loads, but extra high current output to drive uneven speaker loads. Some speaker designs have impedance characteristics that may dip to as low as 1 or 2 ohms at certain frequencies. It is possible for the McIntosh MC7300 to deliver as much as 85A peak current into these lower impedance loads. The MC7300 will supply this extra current output with complete reliability due to the use of McIntosh Sentry Monitor protection circuits.
Some power amplifier manufacturers have claimed that their products do not use protection circuits since they compromise performance. McIntosh engineering design has recognized these potential problems and completely eliminated them. Properly designed protection circuits assure that the McIntosh MC7300 will operate under all types of user conditions with maximum reliability and freedom from possible speaker or amplifier damage. The benefits of these designs mean the McIntosh MC7300 will continue to operate safely for many years.
The McIntosh MC7300 output is so distortion free, it is difficult to measure with conventional instruments. The performance limit is 0.005% maximum distortion, yet it is typical for an amplifier to measure less than 0.002% at mid frequencies. The power output watt meters on the MC7300 are peak responding, and indicate the true power output of the amplifier. The McIntosh MC7300 meter circuits are constantly measuring both voltage and current delivered into the speaker loads. A speaker may have different load impedance at different frequencies, resulting in a change of output current. The MC7300 meters properly react to this condition and indicate Real Output power. Other desirable features are included such as high current gold plated output terminals that will accept cable up to 0.204 inches in diameter. Balanced input connectors are also provided in addition to the normal RCA inputs. As in all McIntosh power amplifiers, the famous patented McIntosh Power Guard circuit is included in the McIntosh MC7300. There is never a need to be concerned with amplifier overdrive when playing wide dynamic range program sources such as compact discs.
Specifications :
Stereo Power Output........................300W into 8, 4, or 2 ohms loads is the minimum
........................sine wave continuous average power output per channel
........................from 20Hz to 20kHz with both channels operating
Output RMS Voltage........................For stereo power output
........................49.0 across 8 ohms
........................34.6 across 4 ohms
........................24.5 across 2 ohms
Mono-Bridge Power Output...............600W into 16, 8, or 4 ohms load is the minimum
...............sine wave continuous average power output
...............from 20Hz to 20kHz
Output RMS Voltage........................For mono-bridge power output
........................98.0 across 16 ohms
........................69.3 across 8 ohms
........................49.0 across 4 ohms
Mono-Parallel Power Output..............600W into a 4, 2 or 1 ohm load is the the minimum
..............sine wave continuous average power output
..............from 20Hz to 20kHz
Output RMS Voltage........................For mono-bridge power output
........................49.0 across 4 ohms
........................34.6 across 2 ohms
........................24.5 across 1 ohm
Output Load Impedance...................Stereo: 8, 4 or 2 ohms by connecting to the proper
....................output terminals
....................Mono: 16, 8, 4, 2 or 1 ohm by connecting to proper
....................output terminals
Total Harmonic Distortion.................Stereo: 0.005% max harmonic distortion at any power
..................level from 250mW to rated power per channel from
..................20Hz to 20kHz, both channels operating
..................Mono: 0.005% max harmonic distortion at any power
..................level from 250mW to rated power from 20Hz to 20kHz
Intermodulation Distortion.................Stereo: 0.005% max if instantaneous peak per output
.................does not exceed twice the output rating per channel,
.................with both channels operating, for any combination of
.................frequencies from 20Hz to 20kHz
.................Mono: 0.005% max if instantaneous peak power output
.................does not exceed twice the output rating for any combination
.................of frequencies from 20Hz to 20kHz
Frequency Response.......................At 1W output
.......................+0, -0.25dB from 20Hz to 20kHz
.......................+0, -3.0dB from 10Hz to 100kHz
Hum And Noise...............................105dB, below rated output (A-weighted)
IHF Dynamic Headroom...................1.9dB
Damping Factor...............................Greater than 40
Input Impedance..............................Unbalanced: 20k ohms
..............................Balanced: 40k ohms
Input Sensitivity...............................Suitable for either 1.4 or 2.5 V
Power Requirements........................120V, 50/60 Hz, 0.6 to 12 A
Finish.............................................The front panel is a combination of glass and black anodized
.............................................aluminum. The chassis is black.
Dimension(w x d x h)........................44.5 x 42 x 19.5 cm
Weight............................................34kg
Miscellaneous :
XLR Inputs.......................................Yes
Made In...........................................USA
Condition.........................................8/10
Product Information :
http://audio-database.com/MCINTOSH/amp/mc7300-e.html
http://www.berners.ch/McIntosh/en/MC7300.htm (Manuals and brochures) |
