Speco Technologies Speaker SP 4NXC T User Manual

Owner’s Manual for Models:  
SP-4NXC/T  
SP-5NXC/T  
SP-6NXC/T  
200 New Highway Amityville, New York 11701 • Outside Metro NY: 1-800-645-5516  
70/25V  
Commercial  
Speaker  
Systems  
8.04  
 
Installation:  
On desired Loop Through Runs, have the positive wire from amplifier enter through terminal # 2 and exit  
through terminal #1, then have common wire running from other speakers in the run enter through termi-  
nal #4, eventually heading back to the amplifier through terminal #3. See following diagram:  
Wattage Selection  
Note: It is important that before making any connections with the speaker terminals on your NXC Series  
that your power source, amplifier and/or receiver, is completely turned off.  
* Through this wiring method, if the quick-snap terminal connect is pulled out in the middle  
of a speaker run, subsequent speakers will stay connected.  
First, determine the purpose that your NXC Series will be used for by determining whether it will be  
used in a 70 Volt, 25 Volt or 8 ohms application.  
Remove your speaker systems from the carton and remove the paint shield that is over the face of each  
speaker.  
Once you have removed the paint shield and determined that your application is either is for 70 Volt or 25  
Volt commercial use, you must determine which wattage tap setting best meets the need of the sound  
environment your speaker will be utilized in.  
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Usually, a wattage tap dial sets at “1.2W” – “2.0W” will be utilized for background music in a quiet office  
setting. The higher wattage taps “5.0W” – 60W” are utilized when a higher volume for the speaker is  
needed to offset a louder environment. After determining your need, gently turn the wattage tap dial on  
the faceplate of each speaker with a small flathead screwdriver so that the silver-colored indicator is  
aligned with the desired wattage tap on the corresponding “70V” or “25V” side of the transformer dial.  
Your transformer setting is then set and the NXC speaker will intuitively know whether it is receiving a  
70 or 25 Volt run.  
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Once the wires are in, firmly tighten the small screws above each terminal until the wires are firmly  
secured.  
Upon securing, gently snap the quick-snap terminal connects back into place making sure it is lined up  
properly and the text of the numbers on the quick-snap terminal connects match the same direction as the  
text of the positive/negative indications on the back of the speaker for proper fitting.  
For an 8 ohms speaker requirement, turn dial tap so that the silver indicator aligns with the 8 ohms  
indication on the dial. This automatically overrides the transformer within the unit.  
Once the quick-snap terminal connect is in place, re-cover and the terminals section by securing the ter-  
minal metal cover to its original location. Upon securing the terminal metal cover, faster the screws on the  
strain-protector to secure and clamp down on the wires to prevent loosening during installation and  
post-installation.  
Connecting Speaker Wire  
To correctly wire your speaker systems, carefully remove the terminal metal cover protecting the terminals  
on the back of your speakers by unscrewing the fastened screws in each of the two corners. When the  
terminal metal cover is removed, loosen the screws on the strain-protector portion of the terminal cover  
and pass the speaker wire through the strain-protector.  
A 3/4” diameter punch out hole is also available on the terminal metal cover for installations where solid  
conduit or flex pipe is needed. A pipe clamp is included as well for this purpose.  
In addition, a metal safety loop accompanies the back of each speaker and is recommended for securing  
a speaker run with a supporting cable.  
After passing the pre-laid wire through the strain-protector, remove the gray-numbered quick-snap  
terminal connect from the back of the speaker by slowly pulling it straight out of the terminals.  
After connecting each speaker, it is recommended that you quickly check the connections with sound prior  
to final mounting installation to ensure that everything is installed properly and functioning well.  
On desired Parallel Runs, use the positive wire entering from the amplifier to enter and leave through  
terminal #2. The common wire running back to the amplifier should enter and leave through terminal #3  
to wire your run as shown in the following example:  
Installation:  
* Through this wiring method, if the quick-snap terminal connect is pulled out in the middle  
of a speaker run, subsequent speakers will stay connected.  
Upon determining you have a strong wire connection with your NXC Series speakers, they must be  
flush-mounted.  
To install in a sheetrock ceiling, turn easy-mount tabs inward to the body of the speaker, carefully place  
speaker in the diameter of the pre-cut whole and tighten the four mounting screwing on the outer rim of  
the speaker faceplate until secure. This will cause the easy-mount tabs to clamp down behind the  
sheetrock and secure the speaker.  
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On installations with drop ceilings, make sure your provide speaker brackets are firmly secure and  
assembled in the ceiling, then insert the wired speakers with easy mount tabs by following the directions  
in the preceding paragraph.  
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Please make absolutely certain that all speakers are securely mounted and that your selected site of  
mounting can support the speaker weight indefinitely. SPECO TECHNOLOGIES ASSUMES NO  
LIABILITY FOR MIS-INSTALLED OR MISPLACED SPEAKERS.  
 
Painting:  
Speco Technologies’ Top Selling Commercial Items  
If the need to paint your speaker is present, separately paint the speaker grilles letting thoroughly dry, and  
use the paint guard shield to protect the face of the speaker while painting the speakers’ flush-mounted  
rim.  
Upon securing your speaker systems, replace the grilles back on the faceplate and you are finished to  
enjoy your high-quality Nexus Contractor™ Series speakers.  
Warranty:  
30 or 60 Watt 4 Zone Amplifiers with  
AM/FM Tuner and CD Player  
Item Codes: P-30FACD, P-60FACD  
(Also available in cassette version)  
15, 30, 60, 120 Watt RMS Contractor  
Series Amplifiers  
Item Codes: PBM-15, PBM-30,  
PBM-60 or PBM-120  
Speco Technologies offers a limited 15-year warranty on their indoor speakers. Please reference the  
enclosed warranty card for complete details of warranty.  
70/25V MA Series ABS Plastic  
Enclosure Speakers  
Item Codes: SP-5MA/T, SP-6MA/T  
70/25V Commercial Speakers  
Item Codes: G86TG, G86TCG (with  
Volume Control)  
Speco Technologies  
200 New Highway  
Amityville, New York 11701  
631-957-8700  
NOTES  
70/25V 30 Watt Weatherproof Horn  
Item Code: SPC-30RT  
70/25 5.25" Outdoor Speakers  
Item Codes: SP-5AWD/T (Black),  
SP-5AWD/T-W (White)  
Available in 6.5” also  
70/25V Rock Speakers  
Desktop MIC with XLR Connector  
Item Code: SP-RK65CB/T  
(Brown), SP-RK65CG/T (Granite)  
Item Code: MHL-5S  
 

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