LOUDSPEAKER PLACEMENT
MTX In-Wall Speakers are designed to work within any interior decorating scheme.
They can be installed in virtually any location where flush mounting is possible.
To maximize their sound performance however certain guidelines should be fol-
lowed. For the best stereo reproduction the two loudspeakers should be placed
an equal distance from your listening position and separated so that the angle
between them, at the listening position, is between 40 and 60 degrees.
For best stereo imaging, we recommend that the units be placed so that the
tweeters are as close as possible to the ear level of a seated listener. As this is
not always possible in keeping with aesthetic design of a particular room, MTX
In-Wall Speakers were designed with a pivoting tweeter which rotates to allow you
to “aim” the high frequencies toward the listening position.
TWEETER LEVEL ADJUSTMENT
The output of the tweeter can be adjusted to compensate for speaker placement/
listening positions that are less than ideal. The 0dB position is designed to pro-
vide the smoothest frequency response on axis. If the high frequency response is
considered to be too strong or too weak, the tweeter level can increased (+3dB
position) or decreased (-3dB position) to suit the listeners preference.
Normal Dispersion
Dispersion After Tweeter Adjustment
MODEL 520C
5-1/4” Coaxial In-Ceiling Speaker w/
swivel tweeter
Impedance: 8 ohms nominal
Sensitivity: 85dB
50W RMS/100W Peak Music
Frequency Response: 60Hz-20kHz
7-3/4”Dia. x 3-3/4”D
MODEL 825C
8” Coaxial In-Ceiling Speaker w/
swivel tweeter
Impedance: 8 ohms nominal
Sensitivity: 85dB
60W RMS/120W Peak Music
Frequency Response: 40Hz-20kHz
10-3/4”Dia. x 4”D
MODEL 625C
6-1/2” Coaxial In-Ceiling Speaker w/
swivel tweeter
Impedance: 8 ohms nominal
Sensitivity: 85dB
55W RMS/110W Peak Music
Frequency Response: 50Hz-20kHz
9”Dia. x 3-1/2”D
OTHER PRODUCTS FROM MTX
In-Ceiling Loudspeakers
Home Loudspeakers
MONITOR6
6-1/2” Two-Way Home Loudspeaker
19mm Dome Tweeter
Impedance: 8 ohms nominal
Sensitivity: 89dB
100W RMS/200W Peak Music
Frequency Response: 55Hz-20kHz
12 3/4”H x 7 1/2”W x 8 1/2”D
MONITOR10
10” Three-Way Home Loudspeaker
19mm Dome Tweeter
Impedance: 8 ohms nominal
Sensitivity: 92dB
200W RMS/400W Peak Music
Frequency Response: 30Hz-20kHz
31 7/16”H x 11 1/8”W x 14 5/16”D
MONITOR6C
6-1/2” Center Channel Loudspeaker
19mm Dome Tweeter
Impedance: 8 ohms nominal
Sensitivity: 92dB
100W RMS/150W Peak Music
Frequency Response: 60Hz-20kHz
7 1/2”H x 17 5/8”W x 8”D
MONITOR12
12” Three-Way Home Loudspeaker
19mm Dome Tweeter
Impedance: 8 ohms nominal
Sensitivity: 94dB
250W RMS/500W Peak Music
Frequency Response: 25Hz-20kHz
35”H x 13 1/8”W x 16 1/16”D
TECHNICAL ASSISTANCE
For additional technical assistance you can visit our website at www.mtx.com.
Otherwise, our technical service representatives can be reached by phone: 1-800-
CALL-MTX or by email: technical@mtx.com.