Operation Manual

7
main system is carried forward into the Sub-Bass System. This is a very important point and together with
REL’s Natural RollOff™ circuitry, ensures far superior system integraon of the Sub-Bass System with the
main system.
HIGHLEVEL INPUT: Connecons should be made to the same binding post on main amplifier as the main
speakers. Red to amplifier main right speaker red terminal, yellow to amplifier main le speaker red terminal
and black to amplifier main speaker black terminal, right or le but not both. Plug the Neutrik Speakon plug
into the HIGHLEVEL Speakon socket. Note: This connecon does not draw power from the power amplifier
and, yes, your REL is a powered sub bass system. However, by deriving its signal from the main power
amplifier, beer sound quality is achieved.
.1 INPUT: This requires a phono-to-phono cable and is a dedicated true .1 channel. This circuit therefore
eliminates the normal Natural RollOff™ Crossover and passes the .1 LOWLEVEL signal through with only the
required 120Hz fourth-order filter.
LOWLEVEL INPUT: This single channel phono input allows for convenonal connecon to a preamplifier
and should be used in the rare event that a HIGHLEVEL connecon proves incompable. Plug one end of
a single phono-phono cable into the LOW-LEVEL input jack of the REL and the other end into either the le
or right channel output of your preamplifier. Because much sub-35Hz bass informaon is mono, there is
lile need to connect both le and right channels. Should your system require this style of connecon –
HIGHLEVEL is preferred – addional performance is available by purchasing a second, matching REL and
running each as separate stereo subs.
PHASE SWITCH – Used to set phase
Posion 0 / HIGHLEVEL, LOWLEVEL or LFE: 0 degrees phase
Posion 180 / HIGHLEVEL, LOWLEVEL or LFE: 180 degrees phase
PHASE SELECTION AFFECTS BOTH HIGH- AND LOW-LEVEL INPUTS
Crossover is always engaged for HIGHLEVEL INPUT. The .1/LFE signal does not pass through the
crossover circuit.