User Manual

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amplifier because the REL’s amplifier input impedance is 150,000 ohms, in effect producing NO
additional load on the rest of your system.
• The standard high-level hook up procedure is: attach the red wire to the amplifier’s right
positive speaker output terminal; attach the yellow wire to the amplifier’s left positive speaker
output terminal; attach the black wire to whichever of the amplifier’s ground output terminals is
convenient; plug the Speakon® connector into the Sub-Bass System’s high-level input.
PLACE NORMAL CONNECTION GRAPHIC HERE
• For differential (i.e. fully balanced) amplifiers using one REL, simply use the standard
connecting scheme with the exception of NOT connecting the black wire to a negative speaker
terminal. Instead, it should first be allowed to “float” or hang down without connection to ANY
terminal. Should hum occur using this method, please try connecting to an unused RCA
connector on the rear of a preamp or amplifier. Please contact your dealer should there be any
questions concerning this or any other hookup procedure.
PLACE BALANCED DIFFERENTIAL CONNECTION GRAPHIC HERE
NOTE: The 212SE models are equipped with internal circuitry to allow seamless connection to
Class-D (digital) amplifiers. If connecting to a Class-D amplifier, follow the above connection
procedure for differential amplifiers.
• If connecting RELs to Mono Bloc amplifers we strongly advocate using (2) RELs, one for each
amplifier. Connect the black wire of each REL to the negative speaker terminal of the
corresponding amplifier channel; twist together the red and yellow wires of each REL separately
and connect each pair to the positive speaker terminal of the corresponding amplifier channel. In
some instances, this will result in exceptionally high gain (output) from the RELs. If it seems
simply too high in gain, please remove either the red or yellow wire from the twisted pair. This
will reduce output by half and restore a natural dynamic. If the amplifier is of balanced
differential design, please follow the instructions in the section above labeled Differential
Connection. PLACE MONO BLOC CONNECTION GRAPHIC HERE
• If connecting a single REL as a dedicated center channel sub, please consider connecting to the
rear of the speaker, rather than routing the REL High Level cable all the way back to the
amplifier. Connect the black wire of the REL to the negative center channel speaker terminal;
twist together the red and yellow wires and connect this pair to the positive center channel
speaker terminal.
PLACE CENTER CONNECTION GRAPHIC HERE
• If connecting a REL as a dedicated rear channel sub, connect the black wire of the REL to either
the left rear or right rear negative speaker terminal; connect the yellow wire to the left rear
positive speaker terminal; connect the red wire to the right rear positive speaker terminal. If the
amplifier is of balanced differential design, please follow the instructions in the section above
labeled Differential Connection.
PLACE REAR CONNECTION GRFAPHIC HERE
Low-level connection (via phono connectors) is always an option if high-level connection is not
possible. When connecting to the low-level inputs in a system in which high-level connection is
not possible, such as if using internally-amplified speakers, connect left and right phono cables
between the LOW LEVEL INPUT jacks of the REL and the left and right channel outputs of your
preamplifier.