Audio Database

The pictorial image of PM-14SA ver.2

Marantz PM-14SA ver.2 230,000yen(2002 release)

Description
 
The Integrated Amplifier which raised completeness by supplying the technology acquired by SC-7S1/MA-9S1 to PM-14SA.

The large review of the power circuit is carried out.
The cobalt capacitor of a low foil scaling factor / low loss of what was adopted with separate amplifier, and an affiliated sequence is adopted as the electrolytic capacitor of a power-source block. Moreover, the efficiency ratio has adopted the super ring-core toroidal transformer of good 450VA with little leakage magnetic flux as a power transformer. Furthermore, the feed line was shortened as much as possible, and the shake of potential is eliminated by improving grand potential completely.
The schottky-barrier diode used also with separate amplifier is extensively adopted as each rectifier circuit, and low-noise-ization is attained as it is efficient.

The high precision low-noise metal film resistor and polypropylene film capacitor which the current feedback type circuitry adopted also as PM-14SA is adopted as the preamplifier part, and were adopted as separate amplifier are adopted. This has realized low-noise-izing and a high slew rate.
As circuitry, by the first rank, voltage amplification module adjustable HDAM which can perform DC offset coordination is adopted, impedance conversion is performed in an FET buffer, and a power-source feedback is poured in here. By the SEPP+ diamond output circuit by a bipolar transistor, the subsequent stage has secured drive capacity sufficient by having a stream composition like power amplifier with a high current amplification factor at high speed.

The conventional current feedback type circuitry is adopted also as a power amplifier part, and parts used with separate amplifier, such as a film capacitor and a resistor, are adopted. The phase compensation could be made light by lowering a feedback impedance, and high speed amplifier is realized. This circuitry can remove the choke coil of the harmful output unit on a tone quality, securing the stability to a load variation, and has advantageous composition also in S/N.
Circuitry is connected through the I/V translation part by a current mirror circuitry after impedance conversion to the power amplification part of three-step Darlington which earns a direct-current amplification factor from the first rank in which high speed adjustable HDAM carries out a voltage amplification. The output stage has single push pull composition by the method bipolar transistor of a multiemitter of Pc=200W.
It is the first rank's applying a direct-current feedback 100%, and performing an offset coordination of adjustable HDAM, and it is possible to eliminate DC servo by the active element which poses a problem by S/N etc.
The power transistor is arranged by the heat sink through the high copper cover of vibration proof / the shielding effect.

The termination with a large pitch which it began to shave is adopted as compact-disk input terminal.
Moreover, the thing made from German WBT is adopted as a speaker terminal.

The input/output terminal and changeover switch which can carry out the independent using of a preamplifier part and the power amplifier part are carried.
Moreover, in consideration of the using of an active Woofer, the pre out is designed so that it may be outputted also in the time of integrated.
Furthermore, the possibilities to the by amplifier interconnection have been obtained by setting up the gain of a power amplifier part similarly to SM-17SA ver.2.

The high-density zinc die-casting chassis to which the copper plating was given is adopted.

The phone equalizer amplifier is carried.

The aluminum Naked insulator is adopted.

The OFC power cable of the conductor cross section 2mm2 is attached.

Wireless remote control is attached.

Rear
Attached
Preamplifier
Power
WBT
Internal
Using

Rating of a mode
Form Integrated Amplifier
Output power 200W+200W (4ohms)
160W+160W (6ohms)
100W+100W (8ohms)
THD (20Hz - 20kHz, both channel simultaneous drive, 8ohms) 0.008%
Cross modulation distortion (SMPTE) 0.008%
Output bandwidth (an 8-ohm load intensity, 0.04%) 10Hz - 50kHz
Frequency characteristic (compact disk, Source Direct) 5Hz-100kHz+0 -1 dB
Dumping factor (8 ohms, 20Hz - 20kHz) 180
Input sensitivity/impedance Phono MC: 270 microvolts/100 ohms
Phono man month: 2.4mV/47kohm
High SFT Level: 250mV/20kohm
Main in: 2.0V/22kohm
An Output voltage/impedance Pre out: 2.0V/250 ohm
Phono maximum permissible input (1kHz) MC:10mV
MM:100mV
RIAA deflection (20Hz - 20kHz) ±0.2dB
S/N (an IHF A network, input short-circuit) Phono MC:76dB
Phono MM:90dB
High Level:115dB
Tone control Bass: ±8dB (100Hz)
Treble: ±8dB (10kHz)
Input terminal Line: Four lines
Balance: One line
Tapes system: Two lines
Phone: One line
Main in: One line
Output-terminal Pre out: One line
Tapes system: Two lines
Speaker: Two lines
Headphone: One line
Supply voltage AC100V, 50Hz/60Hz
Power consumption (Electrical Appliance and Material Safety Law) 300W
The maximum Dimensions Width 458x height 166x depth of 464mm
Weight 23.0kg
Adjunct Wireless remote control
AC cable