English
Signal Output Link Connectors
The input signal that goes into the normal Inputs
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Signal Output Link
connectors. This is typically used when the
amplifi er is part of a multi-room system. The signal from the Signal
Output Link is then used to provide a signal to the other amplifi ers in
the system.
Speaker Connections
Speaker Selection
We recommend using loudspeakers with a nominal impedance of 4
ohms or higher with the RB-1510. You should exercise some caution
in driving multiple pairs of speakers in parallel confi guration, because
the effective impedance the amplifi er sees is cut in half. For example,
when driving two pair of 8 ohm speakers, the amplifi er sees a 4 ohm
load. When driving multiple speakers in parallel, it is recommended
that you select speakers with a nominal impedance of 8 ohms or
higher. Speaker impedance ratings are less than precise. In practice,
very few loudspeakers will present any problems for the RB-1510. See
your authorized Rotel dealer if you have any questions.
Speaker Wire Selection
Use insulated two-conductor stranded wire to connect the RB-1510 to
the speakers. The size and quality of the wire can have an audible
effect on the performance of the system. Standard speaker wire will
work, but can result in lower output or diminished bass response,
particularly over longer distances. In general, heavier wire will
improve the sound. For best performance, you may want to consider
special high-quality speaker cables. Your authorized Rotel dealer can
help in the selection of appropriate cables for your system.
Polarity and Phasing
The polarity — the positive/negative orientation of the connections
— for every speaker and amplifi er connection must be consistent so
all the speakers will be in phase. If the polarity of one connection is
mistakenly reversed, bass output will be very weak and stereo imaging
degraded. All wire is marked so you can identify the two conductors.
There may be ribs or a stripe on the insulation of one conductor. The
wire may have clear insulation with different color conductors (copper
and silver). There may be polarity indications printed on the insulation.
Identify the positive and negative conductors and be consistent with
every speaker and amplifi er connection.
Speaker Wire Connection
Route the wire from the RB-1510 to the speakers. Give yourself enough
slack so you can move the components enough to allow access to the
speaker connectors.
The RB-1510 has two pairs of color coded binding posts
back panel. These connectors accept bare wire, connector lugs, or
dual banana type connectors (except in the European Community
countries where their use is not permitted).
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5
also goes to the
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on the
The RB-1510 also has a plug-in speaker connector
connection easier in custom installations. You can pre-wire the plug-in
connector before the amplifi er is installed. The plug-in connector is
wires in parallel with the bind post outputs.
Note: The following text describes both binding post and
plug-in connections. DO NOT use both connection methods in
combination to connect multiple speakers.
Binding Post Connection
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If you are using banana plugs, connect them to the wires and then
plug into the backs of the speaker connectors. The collars of the
speaker connectors should be screwed in all the way (clockwise).
If you are using terminal lugs, connect them to the wires. If you are
attaching bare wires directly to the speaker connectors, separate the
wire conductors and strip back the insulation from the end of each
conductor. Be careful not to cut into the wire strands. Unscrew (turn
counterclockwise) the speaker connector collar. Place the connector lug
around the shaft, or insert the bundled wire into the hole in the shaft.
Turn the collars clockwise to clamp the connector lug or wire fi rmly in
place.
Note: Be sure there are no loose wire strands that could touch
adjacent wires or connectors.
Plug-in Connection
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Connect your speaker wires as shown in the illustration. Insert the wire
into the open and turn the screw to clamp the wire in place.
Be sure to keep the polarity of the connections correct.
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that can make
R+
R–
L–
L+