ENTASYS 200 Installation/Operation Manual — Page 22
NL4–Type Connection Detail
Electrical Connections
In all models, the NL4-type connector can be used for either temporary or permanent low impedance
connections at each model’s stated input impedance. Alternately, the terminal strip may be utilized for
either low impedance connections, or for 70V or 100V connections.
Please note that the supplied ‘jumper’ between terminals #6 and #7 (just before the ’common’ connection),
must be removed for low impedance operation whether the connection is made via the barrier strip or via
the NL4-type connector.
Polarity and Pin Designations
A positive voltage applied to the + input terminals produces positive acoustic pressure from the loud-
speaker. The correct wiring of the NL4-type connector is shown in the illustration below:
Wiring NL4-Type Connectors
Wiring NL4-type connectors is easy. The wire terminations can be soldered if desired, or the connections
may be made mechanically using the pressure terminals. Note that all connections to all models of ENT200 Series
loudspeakers use only two terminals: 1+ and 1-. ENTASYS 200 models are intentionally
not
bi-amplified, thereby
eliminating the need to provide electrical connections to pins 2+ and 2-.
Please consult the cable gauge table (above) for optimal performance when connecting to any model of ENTASYS
200 low-impedance input. For 70V and 100V operation, cable gauges can be reduced substantially with little loss in
performance, particularly for applications that are primarily voice-oriented. In such case, #16 or #14 AWG is nor-
mally sufficient, even for lengthy cable runs.
Connection Length
Minimum Gauge
(AWG)
Total Resistance
10 ft. (3m)
#16 (1.31 sq mm)
0.08 ohm
25 ft. (8m)
#14 (2.08 sq mm)
0.13 ohm
50 ft. (15m)
#12 (3.31 sq mm)
0.16 ohm
75 ft. (25m)
#10 (5.26 sq mm)
0.15 ohm
100 ft. (30m)
#10 (5.26 sq mm)
0.20 ohm
200 ft. (60m)
#10 (5.26 sq mm)
0.40 ohm
300 ft. (90m)
#10 (5.26 sq mm)
0.60 ohm
400 ft. (120m)
#10 (5.26 sq mm)
0.80 ohm
500 ft. (150m)
#10 (5.26 sq mm)
1.00 ohm
Recommended Cable Gauge