Plinius M8 User manual
Stereo Preamplifier
2
3
CONGRATULATIONS
CONGRATULATIONSCONGRATULATIONS
CONGRATULATIONS on your decision to become the proud owner of this
Plinius M8 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 your favourite music faithfully and
accurately. With a little care and a full understanding of the operating recommendations in this manual,
your Plinius M8 Preamplifier will provide years of high-quality, trouble-free performance.
Serial Number: ..................................................................................
Date of Manufacture: ..................................................................................
Final Test Certified By: ..................................................................................
IMPORTANT
IMPORTANTIMPORTANT
IMPORTANT:
::: PLEASE TAKE THE TIME TO READ T
PLEASE TAKE THE TIME TO READ TPLEASE TAKE THE TIME TO READ T
PLEASE TAKE THE TIME TO READ THIS MANUAL
HIS MANUALHIS MANUAL
HIS MANUAL
THOROU
THOROUTHOROU
THOROUGHLY BEFORE USING YOUR PREA
GHLY BEFORE USING YOUR PREAGHLY BEFORE USING YOUR PREA
GHLY BEFORE USING YOUR PREAMPLIFIER.
MPLIFIER.MPLIFIER.
MPLIFIER.
4
Introduction ...................................................................................................................................Page 3
Precautions ...................................................................................................................................Page 5
Preamplifier Features – Front Panel .............................................................................................Page 6
Preamplifier Features – Rear Panel ..............................................................................................Page 7
Preamplifier Features – Remote ...................................................................................................Page 9
Installation and Operation ............................................................................................................Page 11
Input/Output Connection ..............................................................................................................Page 12
Settings Menu Structure ..............................................................................................................Page 14
M8 Features ................................................................................................................................Page 17
Specifications .............................................................................................................................Page 18
Index ...........................................................................................................................................Page 19
Contact Details ............................................................................................................................Page 20
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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 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.
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The front of the Plinius M8 Preamplifier.
Front Panel Layout Sho
Front Panel Layout ShoFront Panel Layout Sho
Front Panel Layout Showing Volume Knob, Vacuum
wing Volume Knob, Vacuumwing Volume Knob, Vacuum
wing Volume Knob, Vacuum
Fluorescent Display,
Fluorescent Display,Fluorescent Display,
Fluorescent Display, And Display LED
And Display LEDAnd Display LED
And Display LED
DI
DIDI
DISPLAY LED
SPLAY LEDSPLAY LED
SPLAY LED
An LED below ‘PLINIUS’ 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.
VACUU
VACUUVACUU
VACUUM FLUORESCEN
M FLUORESCENM FLUORESCEN
M FLUORESCENT DISPLAY
T DISPLAYT DISPLAY
T DISPLAY
Whenever a modification is made to the M8 settings (via the remote control) these changes will be
viewable on the display.
VOLU
VOLUVOLU
VOLUME CONTROL KNOB
ME CONTROL KNOBME CONTROL KNOB
ME 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 M8. When using the remote control to alter the volume level, briefly press the
button to make small adjustments, or hold the button down to continuously adjust the volume.
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CHASSIS
OPEN
LIFT
LINE 1 LINE 2 OUTPUTS
CD
PUSH
PUSH
CAUTION:
TO REDUCE RIS K OF
ELECTRICALSHOCK DO NOT REMOVE
COVER. NO USER S ERVICEABLE
PARTS INSIDE. REFER SERVI CING TO
QUALIFIED SERVICE PERSONNEL.
RISK OF ELECTRICALSH OCK
DO NOTOPEN
CAUTION
MAINS FUSE: REPLACE
ONLY WITH F5AL
DESIGNED AND MANUFACTURED IN
NEW ZEALAND BY
AUDIBLE TECHNOLOGIES LTD
P.O. B O X 183 6
PALMERSTON NO RTH
SERIAL No. VOLTAGE Hz POWER
CONSUMPTION
50/
60
20VA
PLINIUS
M8
STEREO PREAMPLIFIER
LINE 4
ON / OFF
LINE 3 PROCESSOR
PUSH
PUSH
This panel incorporates all the terminals for connecting the input signals from your CD player, tuner, etc,
and the outputs to the power amp and mains supply.
Please remember that your Plinius M8 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 In
Rear Panel Showing InRear Panel Showing In
Rear Panel Showing Input And Output Terminals
put And Output Terminalsput And Output Terminals
put And Output Terminals, Ground
, Ground, Ground
, Ground
Lift Switch,
Lift Switch,Lift Switch,
Lift Switch, Mains Switch
Mains SwitchMains Switch
Mains Switch And Mains Sock
And Mains SockAnd Mains Sock
And Mains Socket.
et.et.
et.
INPUT TERMINAL
INPUT TERMINALINPUT TERMINAL
INPUT TERMINALS
SS
S
The input terminals of your Plinius M8 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, surround processor, VCR, etc. Also included is one pair of balanced XLR inputs for use with
XLR type cables. Consult your PLINIUS
PLINIUSPLINIUS
PLINIUS dealer for further advice if required.
OUTPUT TERMIN
OUTPUT TERMINOUTPUT TERMIN
OUTPUT TERMINALS
ALSALS
ALS
Connections for power amplifiers are provided in the centre 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.
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PROCESSOR INPU
PROCESSOR INPUPROCESSOR INPU
PROCESSOR INPUT
TT
T
This input is for use specifically with home theatre processors. In some circumstances you may wish to
use the power amplifier and speakers that the M8 is connected to as the front two channels of a surround
or home theatre environment. The processor input can be used for this purpose, as any signal connected
to the processor inputs can be sent directly to the power amplifier bypassing the M8 entirely.
GROUND LIFT S
GROUND LIFT SGROUND LIFT S
GROUND LIFT SWITCH
WITCHWITCH
WITCH
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.
MAINS SWITCH
MAINS SWITCHMAINS SWITCH
MAINS SWITCH
The heavy-duty rocker switch to the right of the panel turns the Mains/Line Power to the amplifier ON or
OFF. 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 P
MAINS PMAINS P
MAINS POWER CORD IEC SOCKET
OWER CORD IEC SOCKETOWER CORD IEC SOCKET
OWER CORD IEC SOCKET
This connector is where the mains supply cable from your wall connects to the preamplifier. A fuse
holder is mounted within this connection, and it holds a mains fuse to provide surge and overload
protection for your preamplifier.
E
EE
EARTH POST
ARTH POSTARTH POST
ARTH POST
This is a chassis connected gold-plated earth post for use with most vinyl turntables.
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VOLU
VOLUVOLU
VOLUME CONTROL
ME CONTROLME CONTROL
ME CONTROL
Use these two buttons to control the volume level of the preamplifier. The right side button increases
volume, while the left side button decreases the volume. Briefly press either button to make fine
adjustments to the volume level. Hold down either button to continually adjust the volume level.
MUTE
MUTEMUTE
MUTE
Pressing this button toggles the Plinius M8 in and out of mute.
P
PP
PHASE
HASEHASE
HASE
The phase of the input signal to the preamplifier is toggle from absolute to inverted 180°with each press
of this button.
STANDBY
STANDBYSTANDBY
STANDBY
Standby disconnects the outputs of the preamplifier and turns off the vacuum fluorescent display tube. It
is recommended that whenever the Plinius M8 is left switched on but not in use, the standby function be
activated to increase the life of the display tube.
DISP
DISPDISP
DISPLAY
LAYLAY
LAY
The display button on the remote enables you to quickly adjust the display brightness to either off or the
user set brightness level. If depressed once and the display brightness falls to zero, another press and the
display reverts to the current user preset level. This user level is set using the menu buttons on the
remote as described later in the ‘Settings Menu Structure’ section. Note that if the brightness is set to
zero, any button press will bring the brightness back to the current user setting so the screen can be read.
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SOURCE SELECTIO
SOURCE SELECTIOSOURCE SELECTIO
SOURCE SELECTION
NN
N
The source selection buttons enable changing from one input to another when needed – either CD, Line 1,
Line 2, Line 3, or Line 4.
MENU ACCESS BUTTONS
MENU ACCESS BUTTONSMENU ACCESS BUTTONS
MENU ACCESS BUTTONS
The three buttons labelled Menu and Enter are used to set the M8 menu items. Use the Enter button to
access the menu, then the Up and Down buttons in conjunction with Enter to change settings as desired
(see the settings menu structure section following).
PROCESSOR INPUT SELECTION
PROCESSOR INPUT SELECTIONPROCESSOR INPUT SELECTION
PROCESSOR INPUT SELECTION
Press the Processor button to activate the processor bypass function, allowing a home theatre system to
directly access the front left and right channels of your system. The display will confirm selection of the
processor input by displaying ‘Proc’ for 3 seconds, after which the display reads ‘Processor’. At this time
standby, display and source are the only buttons that still function. To deselect the processor input press
any other source button on the remote control. Note that the processor input only works with the single
ended outputs – the balanced XLR outputs are not live when in processor mode.
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