Marantz PM-11S2 manual Features, Input Amplifier Section, Power Amplifier Section, Power Circuit

ENGLISH

FEATURES

DISPLAY	ATT.
TONE	PRE OUT
	OPERATE
SPEAKER	REC OUT
A
INPUT	VOLUME

SELECTOR

		POWER ON/OFF
SPEAKER	PHONES	PHONO
B		MC

CONNECTIONS NAMES AND FUNCTIONS

This is an integrated amplifier based on the SC-7S2/MA-9S2 flagship models from Marantz, using leading-edge technologies developed for the higher-grade SC-11S1/SM-11S1 models.

¶HDAM®SA3

The latest HDAM®SA3, featured in the higher-grade SC-11S1/ SM-11S1, is provided with this model. Compared with the previous HDAM®SA2, the HDAM®SA3 has further improved temperature stability and substantially higher-speed processing. The HDAM®SA3 is incorporated into many components, such as the current feedback phono equalizer, balance buffer, and input buffer.

Input Amplifier Section

¶Constant Current Feedback Phono Equalizer

The Constant Current Feedback Phono Equalizer of the higher- grade SC-11S1 model is also provided with this model.

This equalizer, developed by Marantz, has the advantages of both NF-type and CR-type phono equalizers, and it supports both MM and MC cartridges.

¶Current Feedback Balance Buffer Amplifier

The Current Feedback Balance Buffer Amplifier, which incorporates the HDAM®SA3 amp module, is provided with this unit, in order to faithfully convey signals from Super Audio CD players and D/A converters that have high-quality balanced output.

¶Dedicated Input Buffers for All Line Input

Jacks

Each CD, LINE 1, LINE 2, RECORDER 1, and RECORDER 2 input jack has its own input buffer amplifier that incorporates an HDAM®SA3.Those buffer amplifiers prevent mutual interference among input sources, for faithful transmission of signals from input sources.

¶Tone Control Amplifier

The electronic tone control amplifier is provided for adjustment of bass (low frequency) and treble (high frequency) sound in units of 2 dB in the range of -8 to +8 dB. Adjustment can be separately performed for the L and R channels, using the remote control unit.

Power Amplifier Section

¶Dual-Amplifier Structure

Following the design concept of the MA-9S2, this unit was developed with the dual structure of a voltage amplifier and power buffer amplifier. This dual structure enables the power buffer amplifier to drive the speakers powerfully, preventing influence from the back electromagnetic force from the speakers. The voltage amplifier drives the power buffer with superlow distortion.

Power Circuit

¶Choke Input Power Supply Circuit

This unit incorporates a choke input power circuit that uses a large-capacity smoothing capacitor, in order to thoroughly eliminate high-frequency noise from the rectifier circuit and external sources. The choke input power circuit supplies clean power to the input amplifier and preamplifier sections.

Functions

¶BI-AMP Mode

Complete bi-amp connection proposed by Marantz enables a level of reproduction of the acoustic field never before achieved. That complete bi-amp connection is available with the PM-11S2. Synchronized operation of two PM-11S2 units is made possible by F.C.B.S. connection, with each PM-11S2 in Bi-Amp mode working as a monaural integrated amplifier.

TROUBLESHOOTING ADVANCED OPERATIONS ADVANCED CONNECTIONS BASIC OPERATIONS BASIC

Preamplifier Section

¶Linear Control Volume

The Linear Control Volume based on the design concept for the SC-7S2 is incorporated. For better S/N ratio, the WM8816 from Wolfson and the HDAM®SA3 have been combined, which enables smooth adjustment in the range of 0 to -100 dB in units of ±0.5 dB.

¶F.C.B.S.

A Floating Control Bus System (F.C.B.S.) enables the user to connect up to four PM-11S2 units, making a diversity of applications possible with complete bi-amp and multichannel connections. Moreover, a ground loop is not formed among multiple PM-11S2 units connected; therefore, sound quality is not adversely affected.

¶Display

This unit adopts an LCD (Liquid Crystal Display) to display the input source and volume level. Compared with other types of display panels, an LCD requires less drive power and generates less radiation noise, which minimizes any adverse effect on sound quality.

OTHERS

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