Polk Audio Car Speaker GNX104 4 User Manual

GNX Series  
Subwoofers  
GNX  
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ATTACH YOUR RECEIPT  
HERE AND FILE FOR  
FUTURE REFERENCE  
X
2
Contact Polk Customer Service: 800-377-7655 [email protected]  
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BRING ON THE NOIZE!  
Please inspect each loudspeaker carefully. Notify your Polk Audio dealer if you notice any damage  
or missing items. Keep the carton and packing material. They will do the best job of protecting your  
speakers if they need to be transported.  
BUILDING A HOME FOR YOUR SUBWOOFER—GNX SUB ENCLOSURE 101  
To get the best performance from your GNX Subwoofers, you must use a Subwoofer Enclosure. Don’t  
bother using them in “free air,” with no sub box, just popped into the back deck of your car. You will  
not get very good performance from your subwoofers if you do this.  
You can build your own box, buy a pre-built box or a box kit, or have your Polk Audio dealer design  
and build a custom sub enclosure for you. Your GNX Subwoofers were designed to work well in a wide  
variety of enclosure sizes and configurations.  
If you choose to build your own enclosure, be sure to build it well. Make certain it’s properly sealed  
and airtight for maximum bass performance.  
b
For more information about enclosures  
and configurations, log on to  
or call Polk Audio’s Customer Service Department  
for a FAXback Sub Enclosure info sheet.  
b
Polk Audio Customer Service is available from 9am–6pm, EST, Monday through  
Friday, at 800-377-7655 (US & Can only, outside the US please call 410-358-3600).  
Please do not hesitate to call us if you have questions about your speaker system.  
We love this stuff.  
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3
WIRING DIAGRAMS FOR GNX104-4, GNX108-8,  
GNX124-4, GNX128-8(Single Voice Coil Hookup)  
Please make certain that your amplifier is rated to carry the specified load.  
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AMP  
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AMP  
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With speakers wired in parallel:  
Two 8speakers will present a 4load.  
Two 4speakers will present a 2load.  
DUAL VOICE COIL WIRING DIAGRAMS FOR GNX10DVC  
& GNX12DVC (4)  
Please make certain that your amplifier is rated to carry the specified load.  
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-
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AMP  
AMP  
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+
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With coils in parallel, a dual 4speaker  
will present a 2load.  
With coils wired in series, a dual 4Ω  
speaker will present an 8load.  
4
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Contact Polk Customer Service: 800-377-7655 [email protected]  
DUAL VOICE COIL WIRING DIAGRAMS FOR GNX10DVC  
& GNX12DVC (4, CONT.)  
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AMP  
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AMP  
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+
+
-
+
-
-
With coils and speakers wired in parallel,  
2 dual 4speakers will present a 1load.  
With the coils wired in series and the  
speakers wired in parallel, 2 dual 4Ω  
speakers will present a 4load.  
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-
+
+
-
+
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AMP  
AMP  
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+
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With coils and speakers wired in parallel,  
3 dual 4speakers will present a 1.3load.  
With the coils wired in series and the  
speakers wired in parallel, 3 dual 4Ω  
speakers will present a 2.7load.  
5
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BREAK IT IN.  
GNX Subwoofers will achieve even greater performance once they are thoroughly broken-in.  
To break in your new GNX Subs, play 20 to 30 hours of music at moderate levels.  
GET MORE INFORMATION ONLINE AT POLK UNIVERSITY:  
AMPLIFIER POWER REQUIREMENTS FOR GNX SUBWOOFERS  
Your Subwoofers will work well with a variety of electronic components. As little as 50 watts per channel  
will deliver adequate listening levels in most cars. If you have a noisy car or intend to play your system  
at loud listening levels, more power is necessary to achieve the best performance. More power is always  
better. Consult your Polk Audio dealer for specific recommendations.  
OPTIMAL CROSSOVER SETTING  
We recommend using an active crossover with a 12 to 18dB per octave low pass filter slope, and  
setting it to an initial setting of 80 to 90Hz as a good starting point. This is an optimal crossover  
setting on most vehicles.  
INVERTING PHASE  
Depending on the placement of your subwoofer enclosure and associated components, it may be  
necessary to invert the phase of one or another of your system’s connections in order to gain better  
subwoofer/mid-range blending. Inverting the phase simply means switching the positive connections  
with the negative connections at the amplifier. If you choose to do this, invert the phase of only one  
set of speakers (either your mains, or your subs, never both).  
SAFE LIMITS OF OPERATION  
Your Polk GNX Subwoofers are made with the highest quality materials for years of trouble-free  
performance. However, damage to loudspeakers can occur when an amplifier, regardless of its  
wattage, is made to play at higher listening levels than its power can clearly produce (usually  
beyond the “1 to 2 o’clock” position on the volume control). This results in very high levels of  
audible distortion, originating in the amplifier, which adds a harsh, gritty sound to the music.  
Contrary to popular belief, a speaker is more likely to be damaged by trying to get too much  
volume from a low-powered amp than from a high-powered one. Hear distortion? Turn it down.  
Contact Polk Customer Service 800-377-7655 (9am–6pm, EST, Monday through Friday).  
6
Contact Polk Customer Service: 800-377-7655 [email protected]  
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LOW FREQUENCY CUT-OFF FOR MID-RANGE SPEAKERS  
IN SYSTEMS WITH SUBWOOFERS  
Now that you have a subwoofer in your system, you may want to decrease the amount of bass  
going to your mid-range speakers. This will get you better mid-range sound and increase the power  
handling. There are two ways to roll off the bass before it gets to your mid-range speakers. One way is  
to use a “bass blocker,” a capacitor placed in series with the speaker input. Bass blockers are installed  
in series, one end connected with the positive lead from your amplifier and the other end connected  
to the positive lead of each of your speakers. Bass blocker capacitors (200 microfarad @ 100volts,  
non-polarized) are available at any RadioShack or parts supply house. The other route is to use  
an electronic crossover device that allows filtering below 100Hz or so. Find these devices at your  
authorized Polk Audio dealer.  
+
+
Bass blocker  
or capacitor  
Radio/Amp  
Speaker  
TECHNICAL ASSISTANCE OR SERVICE “NO SOUND?”  
If, after following these hookup and installation directions, you experience difficulty, please  
double-check all wire connections.  
Make certain your electronic equipment is operating correctly by hooking up another speaker to the  
speaker output. For example, if you are not getting sound from the left channel speaker, connect the  
right channel speaker to the left output. If you still get no sound from that side, the problem is in your  
amp or source electronics. Should you isolate the problem to the speaker, contact the authorized Polk  
Audio dealer where you bought your speakers. Authorized Polk Audio dealers are the best source for  
advice and assistance.  
Polk Audio’s Customer Service Department is available from 9am–6pm, EST, Monday through Friday,  
at 800-377-7655 (US & Can only, outside the US call 410-358-3600). Please do not hesitate to call us if  
you have questions about your speaker system.  
You will find additional information, informative articles, manual updates and cool  
stuff to buy that has Polk Audioall over it by visiting www.polkaudio.com.  
7
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GNX SERIES 10" SUBWOOFER SPECIFICATIONS  
GNX104  
GNX108  
GNX10DVC  
Thiele/Small Parameters  
Type  
subwoofer  
10"  
subwoofer  
10"  
subwoofer  
10"  
Driver Complement  
Nominal Impedance  
4Ω  
8Ω  
dual 4Ω  
18-400Hz  
42.46Hz  
6.85(8)  
3.06mH  
7.79  
Frequency Response  
18-400Hz  
39.6Hz  
3.59Ω  
1.65mH  
7.21  
18-400Hz  
43.19Hz  
6.97Ω  
2.50mH  
7.63  
Fs (Hz)  
Re  
Le  
Qms  
Qes  
Qts  
0.67  
0.83  
0.78  
0.61  
0.75  
0.71  
Vas  
0.97ft3  
0.79ft3  
0.78ft3  
(27.35L)  
(22.33L)  
(22.22L)  
SD  
53.69in2  
(346.36cm2)  
53.69in2  
(346.36cm2)  
53.69in2  
(346.36cm2)  
Power Handling (watts continuous)  
Power Handling (watts peak)  
Sensitivity (SPL at 1 watt / 1 meter)  
Xmax  
175watts  
400watts  
93dB  
175watts  
400watts  
93dB  
175watts  
400watts  
93dB  
0.24"  
0.24"  
0.33"  
(6.1mm)  
(6.1mm)  
(8.4mm)  
Voicecoil Diameter  
2.0"  
2.0"  
2.0"  
(50.8mm)  
(50.8mm)  
(50.8mm)  
Mounting Depth Top Mount  
Mounting Depth Bottom Mount  
Mounting Diameter  
4 13/16"  
(122mm)  
4 13/16"  
(122mm)  
4 13/16"  
(122mm)  
5 1/4"  
(133mm)  
5 1/4"  
(133mm)  
5 1/4"  
(133mm)  
9 1/4"  
9 1/4"  
9 1/4"  
(235mm)  
(235mm)  
(235mm)  
8
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GNX SERIES 12" SUBWOOFER SPECIFICATIONS  
GNX124  
GNX128  
GNX12DVC  
Thiele/Small Parameters  
Type  
subwoofer  
12"  
subwoofer  
12"  
subwoofer  
12"  
Driver Complement  
Nominal Impedance  
4Ω  
8Ω  
dual 4Ω  
18-400Hz  
25.66Hz  
6.92Ω  
1.40mH  
6.00  
Frequency Response  
18-400Hz  
25.99Hz  
3.56Ω  
1.54mH  
5.96  
18-400Hz  
26.16Hz  
6.97Ω  
1.55mH  
6.02  
Fs (Hz)  
Re  
Le  
Qms  
Qes  
Qts  
0.36  
0.44  
0.44  
0.34  
0.41  
0.41  
Vas  
4.11ft3  
3.88ft3  
3.86ft3  
116.25L  
109.75L  
109.32L  
SD  
76.09in2  
(490.87cm2)  
76.09in2  
(490.87cm2)  
76.09in2  
(490.87cm2)  
Power Handling (watts continuous)  
Power Handling (watts peak)  
Sensitivity (SPL at 1 watt / 1 meter)  
Xmax  
175watts  
400watts  
93dB  
175watts  
400watts  
93dB  
175watts  
400watts  
93dB  
0.24"  
0.24"  
0.33"  
(6.1mm)  
(6.1mm)  
(8.4mm)  
Voicecoil Diameter  
2.0"  
2.0"  
2.0"  
(50.8mm)  
(50.8mm)  
(50.8mm)  
Mounting Depth Top Mount  
Mounting Depth Bottom Mount  
Mounting Diameter  
5 13/16"  
(148mm)  
5 13/16"  
(148mm)  
5 13/16"  
(148mm)  
6 1/4"  
(159mm)  
6 1/4"  
(159mm)  
6 1/4"  
(159mm)  
10 15/16"  
(278mm)  
10 15/16"  
(278mm)  
10 15/16"  
(278mm)  
9
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10  
Contact Polk Customer Service: 800-377-7655 [email protected]  
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EX3 (GNX SUBWOOFER) 1 YEAR WARRANTY  
Polk Audio, Inc. warrants the original purchaser only that this Polk Audio EX3 Series (GNX) Product  
(the Product) will be free from defects in materials and workmanship for a period of (1) one year  
from the date of original retail purchase from a Polk Audio Authorized Dealer. However, this warranty  
will automatically terminate prior to the expiration of the (1) one year period if the original retail  
purchaser sells or otherwise transfers the Product to any other party. The original retail purchaser  
shall herein after be referred to as “you.” To allow Polk Audio to offer the best possible warranty service,  
please fill out the Product Registration Card(s) and send them to the Factory at the address provided  
in the Registration Card within (10) ten days of the date of purchase.  
Defective Products must be shipped, together with a proof of purchase, prepaid insured to the  
Authorized Polk Audio Dealer from whom you purchased the Product, or to 2550 Brittania Blvd.,  
Suite D, San Diego, CA 92154. Products must be shipped in the original shipping container or its  
equivalent; in any case the risk of loss or damage in transit is to be borne by you. If, upon examination  
at the Factory or Polk Audio Authorized Dealer it is determined that the unit was defective in materials  
or workmanship at any time during the Warranty period, Polk Audio or the Polk Audio Dealer will, at  
its option, repair or replace this Product at no additional charge, except as set forth below. All replaced  
parts and Products become property of Polk Audio. Products replaced or repaired under this Warranty  
will be returned to you, within a reasonable time, freight prepaid.  
This Warranty does not include service or parts to repair damage caused by accident, disaster, misuse,  
abuse, negligence, inadequate packing or shipping procedures, commercial use, voltage inputs in  
excess of the rated maximum of the unit, cosmetic appearance of the cabinetry not directly attributable  
to defects in materials or workmanship, or service, repair, or modifications of the Product which has  
not been authorized or approved by Polk Audio.  
This Warranty is in lieu of all other expressed Warranties. If this Product is defective in materials and  
workmanship as warranted above, your sole remedy shall be repair or replacement as provided above.  
In no event will Polk Audio, Inc. be liable to you for any incidental or consequential damages arising  
out of the use or inability to use the Product, even if Polk Audio, Inc. or a Polk Audio Dealer has been  
advised of the possibility of such damages, or any other claim by any other party. Some states do not  
allow the exclusion or limitation of consequential damages, so the above limitation and exclusion  
may not apply to you. This Warranty gives you specific legal rights which may vary from state to state.  
This warranty applies only to Products purchased in the United States of America, its possessions, and  
U.S. and NATO armed forces exchanges and audio clubs. The Warranty terms and conditions applicable  
to Products purchased in other countries are available from the Polk Audio Authorized Distributors in  
such countries.  
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11  
GNX  
®
t h e s p e a k e r s p e c i a l i s t s  
POLK AUDIO  
5601 METRO DRIVE  
BALTIMORE, MARYLAND 21215  
(800)377-7655  
“Polk Audio” and “The Speaker Specialists” are  
trademarks of Britannia Investment Corporation used  
under license by Polk Audio Incorporated.  
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