User's Manual

Connectivity and Functionality [major heading]
High-Level Input
Connections 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 left speaker red
terminal and black to amplifier main speaker black terminal, right or left but not both. Plug the
Neutrik® Speakon® plug into the HI LEVEL Speakon® socket.
.1 Input
This requires a RCA to RCA or XLR to XLR 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
The RCA inputs allow for conventional connection from a preamplifier and should be used in the
rare event that a high-level connection proves incompatible. Plug one end of the RCA to RCA
cables into the LOW LEVEL INPUT jacks of the REL and the other end into the left and right
channel output of your preamplifier.
Phase Switch
Used to set phase. Phase Switch on remote control is momentary. Refer to display for 0 or 180
degree status. Phase selection affects High Level, Low Level and .1/LFE inputs.
PHASE SELECTION AFFECTS BOTH HIGH AND LOW LEVEL INPUTS
Crossover is always engaged for high and low level inputs. The .1/LFE signal does not pass
through the crossover circuit.
Filter
The No.25 can employ a two band parametric EQ filter. With the top Filter switch in the center
location the remote acts in normal operation. With the switch in the far left position, the .1/ Level
control on the remote changes the frequency of EQ filter 1, and the Hi/Lo Level control on the
remote changes the level of EQ filter 1. With the switch in the far right position, the .1/ Level
control on the remote changes the frequency of EQ filter 2, and the Hi/Lo Level control on the
remote changes the level of EQ filter 2. Each filter has a frequency range from 20Hz to 90Hz.
The level set of each filter is +/- 6dB in 1/3 dB increments.
LED Display
An LED display is located on the upper right front of No.25. All functions that are user adjustable
via the remote control can be seen here. The display reverts to off a few seconds after adjustment.
The top three characters indicate the parameter being controlled by the remote and the bottom
two numbers indicate the value of the parameter controlled.
Parameter Display
High/Low Level HL
.1 Level .1
Crossover Frequency CO
Phase PH
Parametric EQ1 E1
Parametric EQ2 E2