AMI NiteHAWK, Инструкция по установке и эксплуатации

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Sound System Setup NiteHAWK Internet Jukebox
3-2 22022613 Rev A
Speakers connected across terminals E1 to E7 or T1 to T7 bypass the transformer and are
driven directly by an amplifier channel.
Each transformer provides 70V terminals for driving 70V speakers, and provides taps (E1-
E6 or T1-T6) for driving extension speakers at a lower volume. The power consumed by
speakers driven by a transformer must not exceed the transformer rating of 125 watts per
channel.
The power consumed by all connected speakers must not exceed the channel rating of 500
watts. For example, each channel could drive 375 watts directly from the amplifier (E1 to E7
or T1 to T7), and the remaining 125 watts through the transformer (lower taps and 70V
terminals). See Figure 3-2, 3-3, or 3-4.
Complete the Extension Speaker Worksheet ( Tables 3-1 through 3-4 ) for each channel and
verify it does not exceed the 125-watt transformer rating and the 500-watt amplifier channel
rating. After wiring the speakers, perform the Amplifier Overload Check immediately following
Table 3-5 .
All speakers must be connected with the correct polarity (see Figure 3-2, 3-3, or 3-4 ).
For Rowe floor model jukeboxes using 40832115 Output Transformer Assembly
Channel 1 E1-E7 output is reversed with respect to channel 2 E1 to E7 output. This reversal is necessary
to extend monaural sound in a stereo jukebox system. Because of this reversal, speaker connections to
channel 1 must be reversed when compared to channel 2, except for 70V speaker connections.
See
Figure 3-2 for the correct polarity hookup of extension speakers. If the (+) and (-) terminals are not wired
properly, the speakers will be out of phase, causing a reduction in low frequencies (bass).
For Rowe wall model jukeboxes using 40832115 Output Transformer Assembly
Channel 1 E1-E7 output is in phase with channel 2 E1-E7output. The speaker connections for channel 1
speakers are in phase with channel 2 speakers. The 70V phasing is reversed inside the output
transformers. See
Figure 3-3 for correct polarity hookup of extension speakers. If the (+) and (-) terminals
are not wired properly, the speakers will be out of phase, causing a reduction in low frequencies (bass).
For Rock-Ola model jukeboxes using 70251-A Audio Distribution Assembly
Channel 1 T1-T7 output is in phase with channel 2 T1-T7 output. The speaker connections for channel 1
speakers are in phase with channel 2 speakers. The 70V Ch1 and Ch2 outputs are in phase with Ch1
and Ch2 T1-T7 outputs. See
Figure 3-4 for correct polarity hookup of extension speakers. If the (+) and (-
) terminals are not wired properly, the speakers will be out of phase, causing a reduction in low
frequencies (bass).
70-Volt Speakers
To avoid prohibitive cable losses on long speaker lines (over 100 feet), use 70 V speakers. The
power level in the 70 V speakers is set at each speaker. For each channel, 125 watts are
provided for 70 V speakers by terminal connections on the audio output transformer assembly.