Russound PRO series User manual
l.~Russound®
PRO
Series
Instruction Manual
Dual-Source Speaker Selectors
2
1. Description
The
PRO
series
speaker selectors
are
highly efficient dual-source, impedance-matching selectors.
These
high-quality speaker selectors
are
designed for
use
with either 4
Ohm
or 8
Ohm
amplifiers and 4
Ohm
to 8
Ohm
speakers.
The
PRO
speaker selectors are equipped with alow-frequency protection circuit to reduce subsonic signals. This allows high power
operation without amplifier shutdown. TIle PRO units employ audiophile-grade impedance matching autoformers to maintain a
safe
operating load
at
the amplifier
while
distributing maximum power through the system. Autoformers are very efficient because
of
the
small
loss
incurred
as
aresult
of
heat dissipation. TIle
series
is
equipped with aback panel rotary switch, which
is
used to
set
the appro-
priate impedance based on the number
of
pairs
of
speakers connected. This switch selects the proper
taps
of
the autoformers, allowing
all
of
the
amplifier's power to be delivered to the speakers.
TIle
PRO
speaker selectors can be connected to one or
two
amplifiers. Afront panel button allows switching between the
two
ampli-
iiers for all speakers connected to the unit.
2. Connections
The
PRO
series
have removable modular snap connectors
thaI
provide cUlor-cuded wire terminations without the need for set-screws.
Strip about 3/8" (0.95 cm)
of
insulation from the ends
of
all wires to be connected. If
necessary,
twist the exposed conductor to insure
that no loose strands exist. Remove the
AMP
Aconnector by firmly pulling it out
of
its
4-pole connector. Lift the wire locking lever on
connector. Insert the wires from amplifier Aoutput, being careful to observe the polarity, then lower the lever with a"snap."
In
the same
way,
connect the amplifier Boutput to the
AMP
Bconnector. Follow the same procedure to connect each pair
of
speakers to the appro-
priate
SPEAKER
connector, observing proper channel and polarity. If external volume controls are
used,
connect speaker wire from the
appropriate speaker connector on the
PRO
to the volume control input. Speaker connections can support multiple speaker pairs wired
in
parallel or
series,
provided their combined impedance
is
a
minimum
of
4ohms.
3. Operation
To
ensure
safe
operation
of
the amplifier,
an
impedance level must first be selected using the rotary switch labeled
SPEAKER
PAIRS
located on the
rear
of
the unit. This switch should be
set
to the total number
of
speaker pairs being connected to the unit.
Set
the
svvitch
based
on the following conrlitions:
•If the amplifier and the speakers Jre both 4ohms,
set
the rotary switch to the number
of
pairs
of
speakers connected to the
PRO.
•If the amplifier and the speakers are both 8ohms,
set
the rotary switch to the number
of
pairs
of
speakers connected to the
PRO
.
•If the aillplilll'j
,c,
,j
~;i,;:!,
1;,;
::li' "!lz',lkf':S drC'·: ohms,
set
the rotary switch to TWICE the number
of
pairs
of
speakers connected to
the
PRO.
•If the amplifiel'
is
4ohms ,lnd
till'
51)(\11,:('1'5
drc'
()
ohms,
set
the lutary switch to HALF the number
of
pairs
of
speakers connected to
the'
PRO
After selling the proper impedance level, the spedkers
Cdn
be turned on and off in any combination.
To
switch between the A
<md
Balllrlifiers, push the
AMP
A /
AMP
Bhutton located on the front panel.
4. Setting System Volume
It
is
impol1dllt
tu
prupl.'riy adjust
an
impedance-matching
system
to avoirl distortion or
DC
clipping (DC voltage
will
be produced from
an
amplifier that
is
overworked or that
h,15
,ln improper load).
These
can cause
an
amplifier/receiver to go into protection, and can
cause autoformers on volume controls to
hmt
up, damaging system components.
To
set
up the
system,
the amplifier/receiver volume
should be
at
its
lowest setting, and the in-wall/selector volume control should be
at
the highest setting. Slowly adjust the
'lmplifier/re'ceivpr volume' tu
,1
h'(·1
thZlt
is
acceptable for the amplifier to produce
without
clipping.
SIGNED
IN
USA MADE
IN
CHINA
~
,o-12
UI
NUMBER
Of
SPEAKER PAIRS
URussound
PRQ.6
HP
NEWMARKET,
NH
USA
Modular
Snap
Connector
Wiring
Order
WHITE
--
L+
(left channel positive)
GREEN
--
L-
(left channel negative)
BLACK
--
R-
(right channel negative)
RED
--
R+
(right
channel positive)
URussound
Speakers
Optional
ALTx-2sc
impedance-matching
volume
controls
R850MC
POWER
AMP\lftU
PR-6 HP
(back)
Amplifier
Connection
Diagram
for
Russound PRO-HP Speaker Selectors
(Not
to
scale)
3
5. Specifications
Power: 100 watts per channel
RMS
continuous
200
watts per channel average
300
watts per channel peak
Volume Control: 42 dB attenuation, 12 positions
Impedance Matching: High-efficiency impedance-matching autoformers
Low-Frequency Protection: Bi-polar capacitor circuit
Wire
Size: up
to
14 gauge
wire
Dimensions: 17" W x 2.875" H x 8.25" D(43.2 x7.3 x
21
cm)
Weight: PRO-6 7.52
Ibs.
(3.4
kg)
PRO-8 7.75
Ibs.
(3.49
kg)
PRO-12 7.995
Ibs.
(3.58
kg)
6.
Optional
Accessories
Volume Controls -ALTx
Series,
LPTx
Series,
and WALTx-2 for outdoor applications
7.
Warranty
The
Russound PRO
Series
is
fully guaranteed for
Ten
(10)
years
from the date
of
purchase against all defects in materials and workman-
ship. During this period, Russound
will
replace any defective parts and correct any defect in workmanship
without
charge for either
parts or labor.
For
this warranty to apply, the
unit
must be installed and used according to
its
written instructions.
If
service
is
necessary,
it must be performed by Russound. The unit must be returned
to
Russound at the owner's expense and
with
prior written permission.
Accidental damage and shipping damage are not considered defects under the terms
of
the warranty. Russound assumes
no
responsibil-
ity for defects resulting from abuse
or
servicing performed by an agency
or
person not specifically authorized in writing by Russound.
Damage to
or
destruction
of
components due to improper
use
voids the warranty. In these
cases,
the repair
will
be made at the owner's
expense.
To
return for repairs, the unit must be shipped
to
Russound at the owner's expense, along
with
anote explaining the nature
of
the service required.
Be
sure
to
pack in acorrugated container
with
at least 3inches
of
resilient material
to
protect the
unit
from damage
in transit.
Russound sells product
only
through authorized Dealers and Distributors
to
ensure that customers obtain proper support and service.
Any Russound product purchased from an unauthorized dealer
or
other source, including retailers, mail order sellers and online sellers
will
not be honored
or
serviced under existing Russound warranty policy. Any sale
of
products by
an
unauthorized source
or
other man-
ner not authorized by Russound shall void the warranty
on
the applicable product.
l.
~Russound®
5Forbes
Rd.
Newmarket, NH
03857
Tel
603.659.5170
•
Fax
603.659.5388
e-mail: [email protected]
Russound
is
not responsible for typographical errors
or
omissions.
All trademarks are the property
of
their respective owners.
28-0009
Rev.
404/07106
This manual suits for next models
3
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