Bedienungsanleitung Marantz PM15S1 (Seite 6 von 28) (Englisch)

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ENGLISH

Marantz has surpassed itself with the new PM-15S1 stereo

integrated amplifier, which incorporates many of the design

concepts of the PM-11S1 flagship model amplifier.

Amplifier

• HDAM





SA2

As in the PM-11S1 model, the PM-15S1 also incorporates the

HDAM



SA2 as the main amp module. The HDAM



SA2 in-

cludes an input buffer, linear control volume and power buffer.

• Linear Control Volume

PM-15S1 inherits the Linear Control Volume system used in

the PM-11S1, which offers smooth volume control of ±0.5dB

steps in a range of 0dB - 100dB.

• Current Feedback Phono Equalizer

The Phono Equalizer, which has MM/MC type cartridge sup-

port, also inherits the Current Feedback Phono Equalizer used

in PM-11S1.

• Input Buffer

The input buffer is composed of the HDAM



SA2 in the input

section, which enables signals from the input source to be

transmitted precisely to the linear control volume.

• Power Amplifier

Following closely in the footsteps of its predecessor, the PM-

11S1 is designed using a two-amplifier construction. By using

a two-amplifier system, the power buffer uses high power to

drive the speakers, therefore cutting the effects of Back EMF

from the speakers.

FEATURES

Power

• Power Transformers

Newly developed Toroidal power transformers are used in the

PM-15S1 because they produce less vibration and magnetic

leak than ordinary laminate design transformers. Vibration re-

duction is achieved by using ring shaped core materials, while

rigorous controls are maintained on the manufacturing pro-

cess. Furthermore, the transformer periphery is covered with

a ring core and short ring to reduce magnetic flux leak.

• LC Ripple Filter

An LC Ripple Filter has been incorporated into the pre-amp

power circuit, which provides “clean” power to the pre-amp

section. “Clean” power is achieved by cutting out rectifier noise

generated by the rectifier circuit, as well as external high fre-

quency noise.

Functions

• Bi-Amp Mode

The complete bi-amp connection proposed by Marantz with

the SC-7S1 and MA-9S1 reproduces a sound environment

never before experienced. This same bi-amp connection has

been made possible with the PM-15S1. Two PM-15S1s are

connected by F.C.B.S. in a bi-amp mode that enables each to

work as a monaural integrated amplifier.

• Floating Control Bus System

A Floating Control Bus System (FCBS) enables the user to

connect up to four PM-15S1s, making possible a diversity of

applications with complete bi-amp and multiple channel

connections.(pg. 6, 7) Moreover, a ground loop is not formed

between multiple connected PM-15S1s, therefore sound qual-

ity is not adversely affected.

• Display

The PM-15S1 adopts an LCD to display input source and vol-

ume level. Compared to other types of display panels, an LCD

generates less drive noise and radiated noise, hence the ef-

fect on sound quality is minimal.

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