REL R-Series Owner’s Manual 13
Connecting
High-level connection, using the enclosed cable with the Neutrik Speakon
connector, is always the first choice. This connection can be made without
affecting the performance of the amplifier because the REL’s amplifier input
impedance is 100,000 ohms, in effect not producing any additional demand
whatsoever on the rest of your system. This scheme also avoids adding any
detrimental effects by not interposing any additional electronics into the
amplification chain.
• 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.
• For differential (i.e. fully balanced) amplifiers using one REL, simply use
the standard connecting scheme with the exception of connecting the black
wire to chassis ground (i.e. a metal bolt or screw, preferably not painted or
anodized, on the chassis of the power amp or receiver), not to a negative
speaker terminal,, and then connecting into the HIGH LEVEL INPUT on the
REL. Please contact your dealer should there be any questions concerning
this or any other hookup procedure.
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, connect a single phono cable to the
LOW LEVEL INPUT jack. If you are connecting two channels of stereo output from a
pre-amplifier, simply use a high-quality y-adapter to sum the two signals together.
When connecting to a home cinema system where there is a .1/LFE channel
output, connect a single phono cable between the sub out of the processor/receiver
and the .1/LFE input jack on the REL.
Positioning
The optimal position for a REL is in one of the corners behind the main speakers. This
position provides 9 dB of mechanical amplification and allows for the most linear true
low bass wave launch, owing to the ability to tune the REL to the longest distance in
the room in order to produce the longest, therefore lowest, bass waves.
