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SPEAKER WIRING 

If using this speaker as a conventional 8-ohm speaker, most 
installations will consist of only a single speaker per channel. 
Wiring a speaker this way is straightforward, with a single 
two-conductor speaker wire running from the amplifier to 
the speaker's inputs. 
However, when used as part of a constant voltage speaker 
system, most installations will consist of multiple speakers 
per channel. In this case, all speakers are connected in 
parallel, as shown in the diagram to the right. 
To wire speakers in parallel, connect the first speaker to the 
amplifier as normal. Connect the positive terminal on the first 
speaker to the positive terminal of the second speaker, and 
the negative terminal on the first speaker to the negative terminal on the second. Repeat 
for each additional speaker in the array. 
 

INSTALLATION 

Perform the following steps to install and setup this speaker for operation. 

1.

 

Power off and unplug all equipment that will be connected to this speaker. 

2.

 

If you will be using this speaker as a standard 8-ohm speaker, set the tap knob to 
the 8Ω position. 

3.

 

If you will be using this speaker as part of a 70V or 100V constant voltage speaker 
array, set the tap knob to one of the 70V or 100V wattage positions. The total 
wattage rating of all speakers in the array must not exceed 80% of the amplifier's 
RMS power rating. 
Example: If using two model 14887 speakers and two model 14888 speakers in a 
single 70V speaker array using the model 14886 120-watt amplifier, set the taps on 
the two 14887 speakers to 25 watts and the taps on the two 14888 speakers to 20 
watts. This produces a total load of 90 watts, which is less than the 96 watt 
maximum that represents 80% of the 120-watt amplifier's rated power output. 

Summary of Contents for 14887

Page 1: ......

Page 2: ...onger distorted Take care to ensure that the speaker wire connections are properly polarized Inverted polarization can result in unnatural or attenuated sound especially in the bass frequencies Do not...

Page 3: ...on line At the speaker end a step down transformer converts the signal back to a normal speaker level voltage This reduces power loss during transmission which allows for the use of longer speaker wir...

Page 4: ...ate for insertion loss For example if using a 100 watt amplifier the total load from speakers should not exceed 80 watts Each individual speaker on a given channel is set to a value such that the tota...

Page 5: ...epeat for each additional speaker in the array INSTALLATION Perform the following steps to install and setup this speaker for operation 1 Power off and unplug all equipment that will be connected to t...

Page 6: ...arning If installing this speaker in the ceiling you must use in wall rated speaker wire for residential installations or plenum rated speaker wire for commercial installations 8 Connect the speaker w...

Page 7: ...are hearing audible distortion which can cause damage to both the speakers and the amplifier Reduce the volume level until distortion can no longer be heard in any part of the audio signal SPECIFICATI...

Page 8: ...ion against harmful interference in a residential installation This equipment generates uses and can radiate radio frequency energy and if not installed and used in accordance with the instructions ma...

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