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Primare SP31 User guide
Primare A33.2 User Guide
Copyright and
acknowledgments
Copyright © 2007 Primare Systems AB.
All rights reserved.
Primare Systems AB
Renvägen 1
SE-352 45 Växjö
Sweden
http://www.primare.net
Issue: A33.2/2
The information in this guide is believed to be
correct as of the date of publication. However, our
policy is one of continuous development and so the
information is subject to change without notice,
and does not represent a commitment on the part
of Primare Systems AB.
Primare is a trademark of Primare Systems AB.
This guide was produced by Human-Computer
Interface Ltd, http://www.interface.co.uk
Safety compliance
This product has been designed to meet the IEC
60065 international electrical safety standard.

CAUTION
ATTENTION
RISK OF ELECTRIC SHOCK DO NOT OPEN
RISQUE DE CHOC ELECTRIQUE NE PAS OUVRIR
CAUTION: To reduce the risk of electrical shock do not remove cover (or
back). No user serviceable parts inside. Refer servicing to qualified service
personnel.
WARNING: To reduce the risk of fire or electrical shock, do not expose
this apparatus to rain or moisture.
CAUTION: In Canada and the USA, to prevent electric shock, match the
wide blade of the plug to the wide slot in the socket and insert the plug
fully into the socket.
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
The lightning flash with an arrowhead symbol within an equilateral

triangle, is intended to alert the user to the presence of uninsulated
'dangerous voltage' within the product's enclosure that may be of
sufficient magnitude to constitute a risk of electric shock to persons.
The exclamation point within an equilateral triangle is intended to
alert the user to the presence of important operating and maintenance
(servicing) instructions in the literature accompanying the product.
Important safety instructions
This product is designed and manufactured to meet
strict quality and safety standards. However, you
should be aware of the following installation and
operation precautions.
1. Take heed of warnings and instructions
You should read all the safety and operating
instructions before operating this appliance. Retain
this handbook for future reference and adhere to all
warnings in the handbook or on the appliance.
6. Climate
The appliance has been designed for use in
moderate climates.
12. Power lines
Locate any outdoor antenna/aerial away from
power lines.
7. Racks and stands
Only use a rack or stand that is recommended for
use with audio equipment. If the equipment is on a
portable rack it should be moved with great care, to
avoid overturning the combination.
13. Non-use periods
If the unit has a stand-by function, a small amount
of current will continue to flow into the equipment
in this mode. Unplug the power cord of the
appliance from the outlet if left unused for a long
period of time.
8. Cleaning
Unplug the unit from the mains supply before
cleaning.
2. Water and moisture
The presence of electricity near water can be
dangerous. Do not use the appliance near water
– for example next to a bathtub, washbowl, kitchen
sink, in a wet basement or near a swimming pool,
etc.
The case should normally only require a wipe with a
soft, damp, lint-free cloth. Do not use paint thinners
or other chemical solvents for cleaning.
We do not advise the use of furniture cleaning
sprays or polishes as they can cause indelible white
marks if the unit is subsequently wiped with a
damp cloth.
3. Object or liquid entry
Take care that objects do not fall and liquids are
not spilled into the enclosure through any openings.
Liquid-filled objects such as vases should not be
placed on the equipment.
9. Power sources
Only connect the appliance to a power supply of
the type described in the operating instructions or
as marked on the appliance.
4. Ventilation
Do not place the equipment on a bed, sofa, rug
or similar soft surface, or in an enclosed bookcase
or cabinet, since ventilation may be impeded. We
recommend a minimum distance of 50mm around
the sides and top of the appliance to provide
adequate ventilation.
This is a Class 1 device and must be earthed.
10. Power-cord protection
Power supply cords should be routed so that they
are not likely to be walked on or pinched by items
placed upon or against them, paying particular
attention to cords and plugs, and the point where
they exit from the appliance.
5. Heat
Locate the appliance away from naked flames or
heat producing equipment such as radiators, stoves
or other appliances (including other amplifiers) that
produce heat.
11. Grounding
Ensure that the grounding means of the appliance
is not defeated.
14. Abnormal smell
If an abnormal smell or smoke is detected from
the appliance, turn the power off immediately and
unplug the unit from the wall outlet. Contact your
dealer immediately.
15. Servicing
You should not attempt to service the appliance
beyond that described in this handbook. All other
servicing should be referred to qualified service
personnel.
16. Damage requiring service
The appliance should be serviced by qualified
service personnel when:
A. the power-supply cord or the plug has been
damaged, or
B. objects have fallen, or liquid has spilled into the
appliance, or
C. the appliance has been exposed to rain, or
D. the appliance does not appear to operate
normally or exhibits a marked change in
performance, or
E. the appliance has been dropped or the
enclosure damaged.
Welcome
Welcome to the Primare A33.2 Amplifier! The A33.2 is a modular power amplifier designed as the ideal output stage in a home
theatre or hi-fi system. Here is how to set up your A33.2 in four simple steps:
Right XLR Remote link
Left XLR
balanced input switch balanced input
REMOTE SW
LINK
RIGHT SPEAKER
RIGHT INPUTS
LEFT INPUTS
LEFT SPEAKER
REMOTE LINK
XLR
Right
loudspeaker
RCA
RCA
Right RCA Left RCA
input
input
XLR
Left
loudspeaker
Power
Right input Remote link Left input
selector switch sockets selector switch
1 Unpack the A33.2
2 Connect speakers
3 Connect inputs
4 Connect power
Your A33.2 is supplied with the following
component:
The A33.2 is designed to be connected directly to a
pair of loudspeakers of 8Ω impedance..
•
•
•
Connect the A33.2 to the preamplifier or
processor using either the left and right RCA
inputs, or the left and right XLR inputs
Connect the power connector on the back panel to
your power outlet using the mains cable supplied
with the A33.2.
•
Put the input selector switches in the
appropriate positions.
If this cable is not suitable for your power outlets
please contact your supplier for an alternative
cable.
Mains cable.
If this is missing please contact your supplier. We
recommend you retain the packaging in case you
need to transport the unit at a later date.
Connect the left and right loudspeakers to the
corresponding terminals on the back panel.
The terminals can accept speaker cables terminated
with spade terminals or bare wires.
If you are using the RCA inputs use high quality
stereo RCA leads.
For the best sound quality connect the red wire
from each speaker to the red terminal marked +
and the black wire from each speaker to the black
terminal marked –.
If you are using the XLR inputs use balanced XLR
cables.
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WARNING: Before connecting
power check that the required supply
voltage, indicated on the back panel,
corresponds to your local AC supply.
If a different voltage is stated on the type plate do
not connect the amplifier to the mains power, and
seek advice from your dealer.
To connect bare wires unscrew the terminal, pass
the bare wire through the hole in the terminal
bolt, and clamp the wire in place by screwing the
terminal back down hand tight.
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WARNING: Always disconnect the
A33.2 from the mains power before
connecting or disconnecting any cables.
Advice on positioning your speakers
For best results your speakers should be positioned
about 2-3m apart, at least 20cm from the rear wall
and at least 50cm from any side wall. The tweeter
or high frequency unit in the speaker should be at
head height when you are seated, listening to the
speaker.
Additional information
Technical specification
Outputs
Response
Remote power on/off
Output power per channel: 120W into 8Ω, 200W
into 4Ω
Frequency response: <10Hz – 100kHz, -3dB
For convenience the A33.2 can be powered on
and off via a remote link cable, avoiding the
need to switch it on or off separately from the
preamplifier in the system.
Output impedance: <0.03Ω
Inputs
Line inputs: 1V for 120W into 8Ω
XLR inputs: 2V for 120W into 8Ω
Input impedance: 11kΩ
THD: <0.08%
Signal-to-noise, line: -100dB
To power the A33.2 on and off remotely from a
Primare SP31 Processor or PRE30 Preamplifier
connect the REMOTE output from the processor/
preamplifier to one of the REMOTE LINK sockets
on the A33.2, using a twin core cable terminated
in 3.5mm jack plugs. The second REMOTE LINK
socket can be used to daisy-chain the remote
output to further A30 series amplifiers.
General
DC trigger voltage: 4 to 12V
Power consumption: 800W.
Size: 430 x 385 x 140mm (WxDxH)
Weight: 20kg
To use the remote link switch the REMOTE SW
switch to the LINK position.
Using the A33.2 with
other Primare products
Although the A33.2 is flexible enough to act as
the output stage in virtually any system, it is ideal
for use with other products in the Primare range,
such as the Primare SP31 Processor or PRE30
Preamplifier.
The A33.2 can be used as a building block in
conjunction with the Primare A30.3 and A30.5 to
create modular systems with any desired number
of matched output stages, and one or more
A30 Series amplifiers can be powered on or off
remotely from an SP31 or PRE30 using the remote
link connections.
Primare Systems AB, Renvägen 1, SE-352 45 Växjö, Sweden. http://www.primare.net
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