Plinius M16 Manual de usuario

Audio Preamplifier

CONGRATULATIONS

CONGRATULATIONSCONGRATULATIONS

CONGRATULATIONS on your decision to become the proud owner of this

Plinius M16 Preamplifier.

This manual has been prepared to help you understand the operation of your amplifier, and to provide

information about its design and the variety of ways it may be used.

We have designed and manufactured this preamplifier to reproduce faithfully and accurately, your

favourite music. With a little care and a full understanding of the operating recommendations in this

manual, your Plinius M16 Preamplifier will provide years of high-quality, trouble-free performance.

Serial Number: ..................................................................................

Date of Manufacture: ..................................................................................

Final Test Certified By: ..................................................................................

IMPORTANT: PLEASE TAKE THE TIME TO READ THIS MANUAL

THOROUGHLY BEFORE USING YOUR PREAMPLIFIER.

Introduction ...................................................................................................................................Page 3

Precautions ...................................................................................................................................Page 5

Preamplifier Features – Front Panel .............................................................................................Page 6

Preamplifier Features – Rear Panel ..............................................................................................Page 8

Preamplifier Features – Remote .................................................................................................Page 10

Installation and Operation ............................................................................................................Page 12

Input/Output Connection ..............................................................................................................Page 13

M16 Features ..............................................................................................................................Page 15

Specifications .............................................................................................................................Page 17

Index ...........................................................................................................................................Page 18

Contact Details ............................................................................................................................Page 19

Please take special note of the following precautions before operating your new preamplifier:

•This preamplifier operates at hazardous voltage levels. We recommend that any work requiring

removal of the lid or base be referred to a suitably qualified and experienced service technician.

•DO NOT attempt to connect any input of this preamplifier to its own outputs.

•DO NOT earth any output terminal or connect any of these terminals together without following the

instructions in this manual or seeking qualified assistance.

•DO NOT place this preamplifier in any position where liquids or any foreign material may

accidentally enter it.

•DO NOT connect any voltage source, short circuit, earth/ground or appliance (other than suitable

audio power amplifiers) to the preamplifier output terminals.

•DO NOT connect any voltage source, short circuit, earth/ground or appliance (other than suitable

audio source components) to the preamplifier input terminals.

The front of the Plinius M16 Preamplifier incorporates all the facilities

you will require on a daily basis.

FRONT PANEL LAYOUT SHOWING VOLUME, BALANCE, SOURCE AND RECORD

KNOBS, PHASE AND MUTE SWITCHES, AND DISPLAY LEDS

STANDBY LED

The standby LED indicates when the preamplifier is in standby mode. This LED also lights to show

whenever the remote control is being used to change the volume level.

PHASE SWITCH

Use the phase switch to change the phase response of the Plinius M16 from absolute to inverted 180°.

The LED above the switch will light when the unit is set to inverted phase. If your M16 has the optional

phono stage installed, the opposite applies for the phono circuitry only. In other words, when in phono

the phase LED will light when in absolute phase, but with any other input selected the phase LED will light

when in inverted phase.

MUTE SWITCH

Whenever the Plinius M16 is muted either with the remote control or by using this switch, the LED will

light and the preamplifier outputs will be shorted.

PLINIUS

PHONO

C.D.

TUNER

VIDEO

TAP E 1

TAP E 2

RECORDSOURCE

PHONO

C.D.

TUNER

VIDEO

TAP E 1

TAP E 2

PHASE STANDBY MUTE

BALANCE VOLUME

SOURCE ROTARY ENCODER

The source selection is controlled electronically, hence the way the source rotary encoder can spin

through a full 360°. An LED will light to show which input is currently selected.

RECORD SOURCE ROTARY ENCODER

The record selection is controlled electronically, hence the way the record rotary encoder can spin

through a full 360°. An LED will light to show which record source is currently selected. There is also a

hidden seventh position where no record source is selected, and no LED will be lit.

BALANCE CONTROL KNOB

The balance control is an ALPS unit that provides accurate alteration of relative gain between the right and

left channels. The balance control has a detent at the centre position.

VOLUME CONTROL KNOB

The volume control is an ALPS motorised unit that will accurately convey the selected source signal to the

line stage of the Plinius M16. When using the remote control to alter the volume level, stab the button to

make small adjustments, or hold the button down to continuously adjust the volume.

This panel incorporates all the terminals for connecting the input signals from your phono turntable, CD

player, tuner, etc, and the outputs to the power amp and mains supply.

Please remember that your Plinius M16 Preamplifier is a high quality electronic instrument capable of an

exceptional level of performance. Be sure that you understand your system’s requirements fully before

you make any connection to this preamplifier.

REAR PANEL SHOWING INPUT AND OUTPUT TERMINALS, CD SELECT, GROUND

LIFT AND STANDBY SWITCHES, MAINS SWITCH AND MAINS SOCKET.

INPUT TERMINALS

The input terminals of your Plinius M16 Preamplifier are easily accessible along the rear panel. These

standard RCA terminals are for use with single ended signals from line level audio components such as

CD, tuner, video, etc. Also included is one pair of balanced XLR inputs for use with XLR type cables. The

switch above the CD inputs is used to select either single-ended or XLR type input. If you wish to use the

XLR input, the switch above it must be set to XLR also, and the opposite is true for use of the RCA

terminals. Consult your PLINIUS

PLINIUSPLINIUS

PLINIUS dealer for further advice if required.

Note that in ‘line’ configuration (no phono stage installed) all the inputs can be used with normal line level

sources. If the optional phono stage has been installed, do not connect any source other than a suitable

phono turntable to the phono input.

CAUTION

RISK OF ELECTRICAL SHOCK

DO NOT OPEN

CAUTION:

TO REDUCE RISK OF

COVER. NO USER SERVICEABLE

PARTS INSIDE. REFER SERVICING TO

QUALIFIED SERVICE PERSONNEL.

CHASS IS

OPEN

STANDBY CIRCUIT

GROUND

C.D.

MAINS FUSE

REPLACE ONLY WITH

SAME TYPE

VIDEO

APE 1

IN OUT

APE 2

IN OUT

OUTPUTS

PUSH PUSH

RCA XLR

PUSH PUSH

PHONO TUNER

C.D.

PLINIUS PRE - AMPLIFIER

SERIAL No. POWER

CONSUMPTION

50/

12 0 V / A

VOLTAGE Hz

DESIGNED AND MANUFACTURED IN

NEW ZEALAND BY

AUDIBLE TECHNOLOGIES LTD

P.O. BOX 183 6

PAL MERST O N N ORTH

OUTPUT TERMINALS

Connections for power amplifiers are provided on the right hand side of the rear panel. Connections are

available for both single ended (RCA type) and balanced (XLR type) cables. Note that the only time the

outputs aren’t ‘live’ is when the preamplifier is in mute or standby.

TAPE OUTPUTS

These RCA outputs are situated next to the tape RCA inputs, and are provided to interface to a pair of line

level recording devices. The position of the record rotary encoder on the front panel determines from

which device a recording is made. These tape outputs are always ’live’ except when standby is selected.

GROUND LIFT SWITCH

This switch allows the signal ground to be disconnected from the chassis. In some installations a hum

loop may exist due to duplicate ground paths from different equipment. Use this switch to remove the

connection from 0V to ground thus allowing some flexibility in your particular set-up.

STANDBY SWITCH

This switch works in conjunction with the remote control to short the outputs and disconnect the inputs.

Use this switch whenever the Plinius M16 is not in use. Note that when in standby the line stage and

power supply is still live, so the internal circuitry will stay at normal operating temperature.

MAINS SWITCH

The heavy-duty rocker switch to the right of the panel turns the Mains/Line Power to the amplifier ON or

OFF. Depress the right hand side of the switch to turn the amplifier on. The amplifier draws a moderately

high current when switched on, so it is not good practice to rapidly turn the Mains switch on and off

repeatedly.

MAINS POWER CORD IEC SOCKET

This connector is where the mains supply cable from your wall connects to the preamplifier. You will

notice that a fuse holder is mounted within this connection, and it holds a mains fuse to provide surge and

overload protection for your preamplifier.

EARTH POST

This is a chassis connected gold-plated earth post for use with certain phono turntables.

The Plinius M16 Remote provides access to most of the

controls you will require on a daily basis.

REMOTE CONTROL SHOWING FUNCTION BUTTONS.

VOLUME CONTROL

Use these two buttons to control the volume level of the preamplifier. The middle top button increases

volume, while the button directly below it decreases the volume. Stab either button to make fine

adjustments to the volume level. Hold down either button to continually adjust the volume level.

PLINIUS

STANDBY

RECORD PHASE

TUNER

C.D.PHONO

VCR TA P E 1 TA P E 2

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