Audio Database

The

MARK LEVINSON No33L 2,400,000yen(100V specification, one set, the December, 1994 release)
2,450,000yen(200V specification, one set)

Description
 
Monophonic power amplifier which supplied the design technique which Mark Levinson is proud of, and an acoustic theory.

Every one super-mass toroidal transformer each of 2,450VA was carried in the power-source part at positive/negative important point, and also it has adopted combining 12 39,000-micro F quality capacitors. Energy supplied which exceeds 1,100J by the capacitance for which this presses 1/2 farad is realized.

By generating a 60Hz exact sine wave inside, the very clean power source which became independent on the voltage amplification stage which affects a tone quality most was supplied, and the signal amplification which is not influenced by a variation or noise of an AC power source is realized.

The very-thick busbar of oxygen free high conductivity copper is adopted as the supply line of a DC power supply, and the impedance of a power-source part is reduced.
Moreover, 80A thing maximum output is also made possible by adopting a busbar also as the product line in a speaker terminal from an output stage.

In order to make a lot of heat generated from 60 TO-3 power transistors emit efficiently, the heat-sinking-plane product of the heat sink was earned to the maximum extent, and the tower configuration case designed so that the smooth measure against heat could be performed is adopted.


Rating of a mode
Form Monophonic power amplifier
Output power 2400W (1ohm)
1200W (2ohm)
600W (4ohm)
300W (8 ohms, 20Hz - 20kHz, and less than THD0.1%)
Frequency characteristic 20Hz-20kHz 0.1dB
Noise - 80dB or less (1W criteria)
Input sensitivity Balance: 2.4V
Unbalance: 1.2V
Voltage gain 26.8dB
Input impedance 50kohm (a balance/unbalance)
Output load impedance 0.05ohm or less
Input terminal XLR balance: One line
RCA balance: Two lines (a right phase / negative phase)
Power source AC100V, 50Hz/60Hz
Power consumption 600W (at the time of an idling)
400W (at the time of a standby)
Dimensions Width 356x height 788x depth of 788mm
Weight 136kg (at the time of an original packaging)