MTX Audio Speaker SUB8 User Manual

1 Mitek Plaza  
Winslow, IL 61089  
815-367-3000  
SUB8 OWNER’S MANUAL  
800-225-5689  
21A8360  
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NOTES  
WIRING AND CONNECTIONS  
Turn off all power to your subwoofer and other equipment before making any connections.  
Installation using speaker level inputs (Figure B).  
A/V Receiver or Amplifier  
+ -  
+ -  
LEFT  
RIGHT  
FRONT  
FRONT  
FRONT  
CENTER  
SURROUND  
FREQ  
GAIN  
FROM AMPLIFIER  
L
R
POWER  
50Hz 150Hz  
L
R
MIN MAX  
LINE IN  
HI LEVEL IN  
FUSE 1A/250V  
+
-
ON  
1A 250V  
CENTER  
FRONT  
OFF  
120 VAC  
100 WATTS  
60 HZ  
Made In China  
-
+
-
+
LEFT  
REAR  
RIGHT  
REAR  
Figure B  
Installation with A/V amplifiers and receivers that have 5.1 channel line level output (Figure  
C).  
Use and RCA “Y” adaptor to connect both line level inputs.  
OUTPUTS  
A/V Receiver or Amplifier  
SUB  
FREQ  
GAIN  
FROM AMPLIFIER  
L
FRONT  
CENTER  
SURROUND  
R
POWER  
50Hz 150Hz  
L
R
MIN MAX  
LINE IN  
HI LEVEL IN  
FUSE 1A/250V  
ON  
1A 250V  
+ -  
+ -  
+
-
OFF  
CENTER  
FRONT  
120 VAC  
100 WATTS  
60 HZ  
RIGHT  
FRONT  
LEFT  
FRONT  
Made In China  
-
+
-
+
RIGHT  
REAR  
LEFT  
REAR  
Figure C  
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MTX WARRANTY STATEMENT  
All SUB8 Powered Subwoofers purchased in the United States from an authorized MTX  
dealer are guaranteed against defects in material and workmanship for a period of ONE  
YEAR from the date purchased by the end user, and limited to the original retail purchaser of  
the product. Product found to be defective during that period will be repaired or replaced by  
MTX at no charge. This warranty is void if it is determined that unauthorized parties have at-  
tempted repairs or alterations of any nature. Warranty does not extend to cosmetics or finish.  
Before presuming a defect is present in the product, be certain that all related equipment and  
wiring is functioning properly. MTX disclaims any liability for other incurred damages result-  
ing from product defects. Any expenses incurred in the removal and reinstallation of product  
is not covered by this warranty. MTX’s total liability will not exceed the purchase price of the  
product. If a defect is present, your authorized MTX dealer may be able to effect repairs.  
PLACEMENT OR POSITIONING  
Your new subwoofer will work well in a variety of locations. However, placement in your lis-  
tening room will affect is performance. Since the wavelengths of sound reproduced by your  
subwoofer are large compared to its size, those sounds are omni-directional in nature. This  
means that locating your subwoofer in relation to your left and right main speakers will not  
affect the directional cues which they provide.  
Because the sound you hear is combination of direct sound from the speaker and reflected  
sound from the wall, ceiling and floor of your listening room, placement of the subwoofer in  
relation to room boundaries changes the balance of what you hear at low frequencies. In that  
low frequency range, the dimensions of most rooms are comparable to the wavelengths of  
those sounds. As sound propagates and reflects in the room, “standing waves” are created  
at frequencies where the wave length of sound or multiples of the wave length are equal to  
one of the dimensions of the room. At your listening position, these standing wave patterns  
of reflected sound add together in and out of phase causing large variations in the response  
that you hear.  
Proof of purchase is required when requesting service, so please retain your sales receipt  
and take a moment to register your product on line at mtx.com.  
SPECIFICATIONS  
Driver Size: 8”  
As a general rule, locating your subwoofer near the corner of the room will increase its overall  
output, but will excite more standing waves in the room and may result in a more uneven  
response. Locating your subwoofer along a wall will usually mean less acoustic output but  
a somewhat smoother response. A middle of the room location would suggest the smooth-  
est response with the least output capability. Of course, any location will be a compromise  
between acoustic performance and the aesthetic blend of the subwoofer enclosure with the  
decor and furnishings of your room. Don’t be afraid to experiment with the location of your  
subwoofer in your room for the best results at your listening position. As with any other listen-  
ing test, use program material that you are familiar with that has substantial bass content.  
Frequency Response: 50Hz - 150Hz  
Lowpass Crossover: Adjustable from 50Hz - 150Hz  
Inputs: Line level and speaker level  
Amplifier Power: 120W Peak Music Power  
Dimensions: 13 3/4”H x 10”W x 13 3/16”D  
Unit Weight: 16.5 lbs.  
SET-UP AND ADJUSTMENT  
After you have selected an initial location for your subwoofer and have connected it into your  
system, have a seat in your normal listening position and have someone help you with the  
following adjustments:  
A) If you are using the line level inputs and your main speakers are receiving a full range  
signal, set the subwoofer crossover frequency control to its full counterclockwise position of  
50Hz.  
B) Set the gain control to the full counterclockwise position at “minimum”.  
C) Turn off the loudness control and set the bass tone control on your main amplifier to the  
flat position.  
D) Use familiar program material that has substantial bass content and play your main sys-  
tem at a moderate volume level.  
E) Slowly rotate the subwoofer level control clockwise until a good balance is achieved be-  
tween the low frequency output of your subwoofer and the mid bass and upper frequencies  
from your main speakers.  
F) Slowly rotate the subwoofer crossover frequency control clockwise to attain the best blend  
between the level of the subwoofer and the main speakers in the midbass crossover region.  
Advancing the control too far will cause a “boominess” in the overall sound and will add an  
unnatural “chesty” quality to male voices.  
CARE AND MAINTENANCE  
Use the following guidelines to maintain the appearance of your subwoofer. Use a soft, damp  
cloth to clean the speaker cabinet. Avoid using harsh detergents or cleaning fluids. Do not  
vacuum any of the speaker components. Permanent damage could occur.  
TECHNICAL ASSISTANCE  
For additional technical assistance you can visit our website at mtx.com. Otherwise, our  
technical service representatives can be reached by phone: 1-800-CALLMTX (1-800225-  
5689) or by email: [email protected].  
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