Plinius PLINIUS 8200P MKII User manual

Class AB Power Amplifier

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3
CONGRATULATIONS
CONGRATULATIONSCONGRATULATIONS
CONGRATULATIONS on your decision to become the proud owner of this
Plinius 8200P Power Amplifier.
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 amplifier 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 8200P Power Amplifier 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 AMPLIFIER.

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Introduction ...................................................................................................................................Page 3
Precautions ...................................................................................................................................Page 5
Amplifier Features – Front Panel ..................................................................................................Page 6
Amplifier Features – Rear Panel ...................................................................................................Page 7
Installation and Operation ..............................................................................................................Page 9
Input/Output Connection ..............................................................................................................Page 10
8200P Features ...........................................................................................................................Page 12
Loudspeaker Selection ................................................................................................................Page 13
Specifications .............................................................................................................................Page 14
Index ...........................................................................................................................................Page 15
Contact Details ............................................................................................................................Page 16

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Please take special note of the following precautions before operating your new amplifier:
•The Plinius 8200P Power Amplifier can deliver in excess of 175 watts into 8 ohms. This amplifier
is also capable of a very large peak current delivery.
•The Plinius 8200P Power Amplifier operates in Class AB. It is capable of generating heat that could
have an adverse effect on other electronic equipment, furniture, etc. DO NOT leave flammable
material on the amplifier whilst running, as this could pose a serious fire risk.
•This amplifier 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 amplifier 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 amplifier 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
high fidelity loudspeakers) to the amplifier output terminals.

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PLINIUS 8200P
The front of the Plinius 8200P Power Amplifier incorporates all the facilities
you will require on a daily basis.
FRONT PANEL LAYOUT SHOWING DISPLAY LED’S AND MAINS SWITCH
MAINS SWITCH
The heavy-duty rocker switch to the left 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.
POWER LED
An LED in between ‘PLINIUS 8200P’ indicates that the power is on. When first switched on, the power
LED will pulse for ten seconds - this is an initialisation sequence, after which the power LED remains lit
during the time the amplifier is powered on.
MUTE LED
The LED to the right of the front panel will light whenever the amplifier is in mute.

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DESIGNED AND MANUFACTURED IN
NEW ZEAL AND BY
AUDIBLE TECHNOL OGIES LTD
P.O. BO X 1836
PAL MERSTON NOR TH
CAUTION
RISK OF ELECTRICA L SHOCK
DO NOT OPEN
CAUTION: TO REDUCE RISK OF
ELECTRICAL SHOCK DO NOT REMOVE
COVER. NO USER SERVICEABLE
PARTS INSIDE. REFER SERVICING TO
QUALIFIE D SERVICING PERSO NNEL.
400V/A
SERIAL No. POWER
CONSUMPTION
50/
60
V
OLTAGE Hz
PLINIUS 8200P MkII
POWER AMPLIFIER
RIGHT CHANNEL LEFT CHANNEL
RIGHT CHANNEL FUSES LEFT CHANNEL FUSES
MUTE
CHASSIS
OPEN
LIFT
INPUTS
This panel incorporates the terminals for connecting input signal from the preamplifier, outputs to the
loudspeakers, and mains supply.
Please remember that your Plinius 8200P Power Amplifier 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 amplifier.
REAR PANEL SHOWING INPUT AND OUTPUT TERMINALS, MUTE AND
GROUND LIFT SWITCHES, AND MAINS SOCKET.
INPUT TERMINALS
The input terminals for your Plinius 8200P Power Amplifier are easily accessible at the top centre of the
rear panel. These standard RCA terminals are for use with unbalanced signals (single ended RCA) from a
line level output preamplifier. Consult your PLINIUS
PLINIUSPLINIUS
PLINIUS dealer for further advice if required.
OUTPUT TERMINALS
Connections for the loudspeakers are provided on the left and right sides of the rear panel. Two parallel
pairs of five way binding posts for each channel are fitted – these provide ease of use with bi-wiring and
multiple cables requiring a large contact area.
MUTE SWITCH
The mute switch enables disconnection of the inputs. When the amplifier is in mute, the LED on the right
of the front panel will light.

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GROUND LIFT SWITCH
This switch is located below the mute switch, and 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 POWER CORD IEC SOCKET
This connector is where the mains supply cable from your wall connects to the amplifier. 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 amplifier.
RAIL FUSES
These tubular fuse holders house the positive and negative rail protection fuses. Depress and turn anti-
clockwise to open. An LED is fitted next to each fuse holder to indicate a blown fuse.

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PLACEMENT AND VENTILATION
Your Plinius 8200P operates at a moderately high temperature, especially when being driven hard. The
ideal location is upon a rigid stand, or floor mounted away from direct contact with any temperature
sensitive materials or deep pile carpets. Ventilation through and around the amplifier should also be kept
unimpeded, so ensure that the heat vents (slots in the lid and base) are not covered or restricted in any
way.
The Plinius 8200P design incorporates a very high level of mechanical de-coupling of the input and
output. It can however still be influenced by acoustical feedback in the operating environment. The use of
acoustic cones, or a suitably spiked amplifier stand or table, may further enhance the performance of this
amplifier. Consult your PLINIUS
PLINIUSPLINIUS
PLINIUS dealer for further advice if required.
MAINS VOLTAGE CONNECTION
Firstly, check that the mains supply voltage printed on the rear of this amplifier is similar to the mains
supply voltage in your area. If in doubt, please consult your PLINIUS
PLINIUSPLINIUS
PLINIUS dealer.
Mains supply power connection is via the supplied plug-in lead. A standard IEC socket connects the
mains power at the amplifier end, while a local mains plug is required at the wall end.
The wiring code used inside all Plinius product is:
Green to Earth/Ground
Green to Earth/GroundGreen to Earth/Ground
Green to Earth/Ground
Blue to Neutral
Blue to NeutralBlue to Neutral
Blue to Neutral
Brown to Phase/Live
Brown to Phase/LiveBrown to Phase/Live
Brown to Phase/Live
Should a ‘local’ plug need fitting to the wall end of the lead, ensure that a suitably qualified service
technician wires the plug correctly.
IMPORTANT: DO NOT POWER UP YOUR AMPLIFIER UNTIL YOU HAVE
CONNECTED YOUR INPUT/OUTPUTS CORRECTLY FOR
YOUR SYSTEM, (AS EXPLAINED IN THE NEXT SECTION).

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It is important that you connect your loudspeakers (outputs) and preamplifier (inputs) to the Plinius 8200P
Power Amplifier correctly to ensure the amplifier is not damaged, and sounds its best with your system.
Now that you have read and familiarised yourself with the connections on the back of the amplifier, as
covered in the previous section, we will now describe in detail the way in which you can connect the
amplifier to your system.
Connect your preamplifier to the RCA inputs on the back of the Plinius 8200P. Make sure you connect the
red coded cable to the red RIGHT RCA input, and the black (or white) cable to the black LEFT RCA input.
Also make sure the RCA connectors are a snug fit and are inserted all the way in.
Next, connect your loudspeaker wires to the output posts. Connect your right loudspeaker (i.e. the one on
the right of you when seated in your normal listening position) to the right output terminals, ensuring that
the red positive (+) terminal is connected to the red terminal on your loudspeaker. Do the same with the
black or negative (-) terminals.
TERMINATION QUALITY
Quality of the connections must be examined to ensure that high-performance, trouble-free operation is
enjoyed. Check that the connections are tight but do not over tighten. If bare wires are used make sure
that no loose strands of wire short across the other terminals or the amplifier chassis. When using plugs
such as bananas, be sure to use good quality plugs with a firm fit.
BI-WIRING
Bi-wiring uses two pairs of loudspeaker cables for each channel loudspeaker. You will notice that the rear
panel of your Plinius 8200P has two pairs of output terminals for this purpose. When using bi-wires,
always connect positive (+) to positive (+) and the same for the negative (-) terminals.
PHASING (OR POLARITY)
It is important to achieve good stereo imaging in your listening room. By observing the wiring
instructions above, each power amplifier/loudspeaker combination should be in phase. If you experience
poor stereo image and/or a lack of bass, check that the loudspeaker wiring has been connected correctly.
We recommend that you use one of the easily obtainable ‘test discs’ to help you ensure both phasing and
channel orientation are correct. If in doubt, consult your PLINIUS
PLINIUSPLINIUS
PLINIUS dealer for advice.

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To achieve a sound performance that is correctly aligned to your room, make sure all of the leads carrying
signals for the RIGHT channel loudspeaker are connected to the RIGHT input to the amplifier from your
preamplifier or CD player etc. Signals for the LEFT channel should be wired in a similar fashion.
CONNECTING THE MAINS SUPPLY
Now that your Plinius 8200P Power Amplifier is configured to your system correctly, the mains cable can
be plugged into the IEC socket on the back of the amplifier. Ensure that the processor switch on the back
panel is correct for your intended usage (normally ‘bypass’), and check the speaker cables are connected
correctly. Flick the power switch on the front panel to the right. The power LED will pulse for five
seconds as the internal microprocessor allows the internal circuitry to stabilise. Press the mute switch on
the back panel to close the mute circuit of the amplifier. You can now enjoy your new Plinius 8200P
Power Amplifier.
WARM-UP PERIOD
You will find that the Plinius 8200P will become noticeably ‘warmer’ in sound after being on for a period
of time. We usually recommend waiting at least 24 hours before expecting the best quality of sound
reproduction from your amplifier. Also, as the Plinius 8200P uses very little power while on, we suggest
leaving the unit turned on so that it will always be at it’s sonic best.

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FUSE PROTECTION
When any rail fuse is damaged one or more fuse warning LED’s will light. These LED’s are located next to
the fuse that has blown. To replace the fuse, steady the amplifier, then firmly push in the round fuse cap
with your fingers. When the cap cannot push in any further, rotate the cap anticlockwise (to the left) until
it comes to a stop. Release inward pressure on the fuse cap and it can now be removed from the
amplifier. If any of the rail fuses need to be replaced, do so only with 7.5 amp normal blow fuses.
To re-fit the fuse, insert the fuse and gently turn it as far as possible anticlockwise (to the left). Now push
the fuse cap in firmly, then turn clockwise (to the right) until it comes to a stop. Release inward pressure
on the cap and the fuse will be fitted securely.
IMPORTANT: DO NOT FIT A FUSE WITH A HIGHER RATING.
Note that fuse failure may indicate a severe problem. Check all speakers and speaker cables for
damage/short circuit, etc. Should the amplifier continue to demonstrate rail fuse failure, contact your
PLINIUS
PLINIUSPLINIUS
PLINIUS dealer.
MAINS/LINE FUSE
A Mains/Line fuse is fitted within the IEC socket on the rear of the amplifier. A small drawer at the bottom
of this socket may be removed (after the IEC plug is removed) by levering it out with a flat blade
screwdriver. The fuse fitted should be rated at no greater than 10 amps normal blow.
IMPORTANT: DO NOT FIT A FUSE WITH A HIGHER RATING.
In the unusual event that this fuse should blow, you must first establish the cause of this failure (such as
power surges, damaged mains cable, etc.) before replacing the fuse with one of the same rating and type.
Should the amplifier continue to demonstrate mains fuse failure, contact your PLINIUS
PLINIUSPLINIUS
PLINIUS dealer.

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Your Plinius 8200P Power Amplifier is designed for use with high fidelity loudspeakers. It should not be
used to operate any other type of appliance or equipment.
Choice of loudspeakers is one of personal taste, providing the chosen loudspeakers are suitable for use
with your amplifier. Be certain that your loudspeakers can handle most of the rated output power of this
amplifier. You may find loudspeaker specifications confusing or misleading, so you should discuss this
with your audio dealer prior to purchase. As a general rule, the use of high power (200 Watt RMS or
greater) loudspeakers is recommended and desirable. However, our experience indicates that medium to
low power loudspeakers (100 to 200 Watt RMS) are quite often suitable for use on this amplifier, provided
the volume is maintained at a level where no distortion is audible.
Impedance of the loudspeaker load is important to ensure the rated performance of this amplifier. Any
combination of loudspeakers may be used, but the total average impedance load for each channel should
be within a range of 4 to 8 ohms. Again, if you have doubts about the impedance of your loudspeaker
configuration, we recommend you speak to your PLINIUS
PLINIUSPLINIUS
PLINIUS dealer.

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175-WATTS RMS PER CHANNEL INTO 8 OHMS.
BOTH CHANNELS DRIVEN FROM 20Hz TO 20kHz AT LESS THAN 0.2%
TOTAL HARMONIC DISTORTION.
SF
FF
FREQUENCY
REQUENCYREQUENCY
REQUENCY R
RR
RESPONSE
ESPONSEESPONSE
ESPONSE:
:::20Hz to 20kHz ±0.2dB. -3dB at 5Hz and -3dB at 70kHz.
SD
DD
DISTORTION
ISTORTIONISTORTION
ISTORTION:Typically <0.05% THD at rated power. 0.2% THD and IM worst case prior to clipping.
SS
SS
SATURATION
ATURATIONATURATION
ATURATION:
:::200 Watts per channel or greater into 8Ω. 300 Watts per channel or greater into 4Ω.
SC
CC
CURRENT
URRENTURRENT
URRENT O
OO
OUTPUT
UTPUTUTPUT
UTPUT:
::: 35A short duration peak per channel. Fuse protected.
SR
RR
RISE
ISEISE
ISE T
TT
TIME
IMEIME
IME:
:::Typically 4µs.
SS
SS
SLEWING
LEWINGLEWING
LEWING:
:::50V/µs.
SH
HH
HUM
UMUM
UM & N
& N& N
& NOISE
OISEOISE
OISE:
:::90dB below rated output 20Hz to 20kHz unweighted.
SI
IIINPUT
NPUTNPUT
NPUT S
SS
SENSITIVITY
ENSITIVITYENSITIVITY
ENSITIVITY:
:::1.75V RMS for rated output at 1kHz.
SG
GG
GAIN
AINAIN
AIN:
:::27dB.
SI
IIINPUT
NPUTNPUT
NPUT I
IIIMPEDANCE
MPEDANCEMPEDANCE
MPEDANCE:
::
: 47kΩ.
SH
HH
HEIGHT
EIGHTEIGHT
EIGHT:
::
: 120mm (4 3/4")
SW
WW
WIDTH
IDTHIDTH
IDTH:
::
: 450mm (17 3/4")
SD
DD
DEPTH
EPTHEPTH
EPTH:
::
: 365mm (14 1/3")
SW
WW
WEIGHT
EIGHTEIGHT
EIGHT:
::
: 13kg (28lbs)

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Bi-wiring......................................................................................................................................Page 10
Date of Manufacture .......................................................................................................................Page 3
Front Panel Layout..........................................................................................................................Page 6
Fuse Protection ............................................................................................................................Page 12
IEC Power Connector...............................................................................................................Pages 8,11
Input Terminals .......................................................................................................................Pages 8,11
Loudspeaker Impedance...............................................................................................................Page 13
Loudspeaker Power ......................................................................................................................Page 13
Mains/Line Fuse...........................................................................................................................Page 12
Mains Supply Connection.............................................................................................................Page 11
Mains Switch .................................................................................................................................Page 6
Mute Switch...................................................................................................................................Page 7
Operating Temperature ..............................................................................................................Pages 5,9
Output Terminals.....................................................................................................................Pages 7,10
Phasing........................................................................................................................................Page 10
Placement.................................................................................................................................Pages 5,9
Rail Fuses ...............................................................................................................................Pages 8,12
Rear Panel Layout...........................................................................................................................Page 7
Safety Precautions..........................................................................................................................Page 5
Serial Number................................................................................................................................Page 3
Terminations ................................................................................................................................Page 10
Ventilation.................................................................................................................................Pages 5,9
Warm-Up Period ..........................................................................................................................Page 11

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All operational, technical and descriptive material published here is subject to change at any time without
notice. For further product information or queries, please contact us at the address below.
PLINIUS
PLINIUSPLINIUS
PLINIUS products are designed and manufactured by:
Audible Technologies Ltd.
Audible Technologies Ltd.Audible Technologies Ltd.
Audible Technologies Ltd.
P.O. Box 18
P.O. Box 18P.O. Box 18
P.O. Box 1836
3636
36
Palmerston
PalmerstonPalmerston
Palmerston North
NorthNorth
North
New Zealand
New ZealandNew Zealand
New Zealand
Phone:
Phone:Phone:
Phone: [phone]
Facsimile:
Facsimile:Facsimile:
Facsimile: 64 6 354 8586
Email:
Email:Email:
Email: [email protected]
Internet:
Internet:Internet:
Internet: www.pliniusaudio.com
©2001 Audible Technologies.