Meyer Sound Stella - 4 Constellation, Руководство по эксплуатации

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STELLA-4 OPERATING INSTRUCTIONS
13
Cable Lengths and Cable Gauges for Stella-4s
When connecting a single Stella-4 to a Stella-188 Channel
Output, you can use cable lengths of up to 300 feet with
only 1 dB of peak SPL loss, using 18 AWG wire. When con-
necting two Stella-4s, equivalent lengths are possible with
heavier wire gauges (see Table 3 and Table 4).
The maximum cable length for a single Stella-4 can be cal-
culated with the following formula:
maximum length = 4 ohms / 2 * cable resistance
For example, the maximum length of an 18 AWG cable with
a resistance of 0.00636 is 314.4 feet (4 / 2 * 0.00636). If you
are using two Stella-4s, the distance is reduced by half to
157.2 feet, since the maximum cable resistance for two
Stella-4s is 2 ohms.
NOTE: For long cable runs, you can use large
cable gauges for most of the run and then ter-
minate with the appropriate gauge (see Table 3 and
Table 4) at the connector.
CONNECTING STELLA-4S TO THE
STELLA-188
To connect Stella-4s to the Stella-188:
1. Power off the Stella-188.
2. Connect a 25-pin D-sub audio cable or snake into the
Stella-188 Audio Input connector. This cable should use
the Tascam DA-88 wiring scheme (see Table 2).
3. Connect audio sources (from a mixer or processor) to the
other end of the audio cable or snake.
4. Connect the Stella-4 loudspeakers to the Stella-188
Channel Outputs. Use a composite cable (such as the
Belden 1502R) wired for both DC power and balanced
audio and outfitted with five-pin Phoenix connectors.
Table 3: Stella-4 Loudspeaker Cable Lengths (AWG)
Cable Gauge Resistance
(
Ω
/ft)
Approximate
Max. Length
(1 Stella-4
per Channel)
Approximate
Max. Length
(2 Stella-4s
per Channel)
12 AWG 0.0016 1200 ft 600 ft
14 AWG 0.00253 750 ft 375 ft
16 AWG 0.00402 475 ft 237.5 ft
18 AWG 0.00636 300 ft 150 ft
20 AWG 0.01008 175 ft 87.5 ft
Table 4: Stella-4 Loudspeaker Cable Lengths (European)
Cable Gauge Resistance
(
Ω
/m)
Approximate
Max. Length
(1 Stella-4
per Channel)
Approximate
Max. Length
(2 Stella-4s
per Channel)
2.50 mm
2 0.0052 365 m 157.5 m
1.50 mm
2 0.01076 175 m 87.5 m
1.00 mm
2 0.02087 90 m 45 m
0.75 mm
2 0.03307 55 m 27.5 m
Stella-188
Stella-4s
Audio
sources