Atlas Sound XLTE - Manual (Page 24)

PAGE 22 Community XLT / XLTE Series Owner’s Manual
in CHAPTER 11, they indicate the load will be below 3 ohms (except for the 51 models). Because this occurs only
over a small range of frequencies and because of the nature of audio signals, a 4 Ohm amplifier should be able to
drive this load with no problems. However, for models that have a nominal 2 Ohm impedance when paralleled, use
caution by ensuring that your amplifier is both rated for 2 Ohms and has adequate cooling.
PARALLELED
MODELS
PASSIVE MODE
IMPEDANCE
BIAMP MODE
LF IMPEDANCE
BIAMP MODE
HF IMPEDANCE
2 x 41 4 Ohms 4 Ohms 4 Ohms
2 x 42 4 Ohms 4 Ohms 4 Ohms
2 x 43 4 Ohms 4 Ohms 4 Ohms
2 x 46 2 Ohms 2 Ohms 4 Ohms
2 x 47 2 Ohms 2 Ohms 4 Ohms
2 x 48 4 Ohms 4 Ohms 4 Ohms
2 x 51 4 Ohms N/A N/A
2 x 55 2 Ohms N/A N/A
Table 7: Nominal Impedances for Two XLT or XLTE Loudspeakers In Parallel
6.4 CONNECTING THE LOUDSPEAKERS
The following diagrams show the wiring connections for the loudspeakers. Be sure to observe proper polarity
when making the connections. This means making sure the positive (+) on the amplifier connects to the
positive (+) on the loudspeaker and negative (–) on the amplifier connects to the negative (–) on the
loudspeaker. Failure to do this when using two or more loudspeakers or full-range loudspeakers combined with
subwoofers will result in weak bass and poor sound coverage.
POLARITY CHECK FOR TWO LOUDSPEAKERS OR SUBWOOFERS:
A simple check for proper polarity is to stand in front of and exactly between two loudspeakers or subwoofers. Play a
mono source through the system. If the sound does not appear to come solidly from a point between the loudspeakers
and/or the bass is weak, they are probably out of polarity. Check the + and - wiring for the entire signal chain to each
loudspeaker. The wiring should be identical.
6.4.1 PASSIVE Mode Wiring (See FIGURE 4)
Installing and operating a full-range loudspeaker in PASSIVE mode requires putting the slide switch on the input panel
in the PASSIVE (down) position. The input connections are made either to one of the Neutrik Speakon or 1/4 in.
jacks, however the Neutrik Speakon is recommended. Observe proper polarity when making the connections.
FIGURE 4: Wiring for PASSIVE Mode Full-Range