Polk Audio Specifications, Polk/MOMO Mid/Woofer Technical Sheet, MM455 MM465 MM400, Mid Driver

Specifications

Recommended

Amplification

Impedance(DCR)

Frequency Response (+/-3dB)

Sensitivity (1w/1m)

Magnet Weight

Height

Cutout Dimensions

Mounting Depth

top mount with grille

Mounting Depth bottom mount

Grille Height

Grille Diameter

Crossover Frequency

Crossover Order

MM455	MM465	MM400
25-100 watts	25-150 watts	25-100 watts
4.0 ohms	4.0 ohms	5.5 ohms
68 Hz - 20 kHz	50 Hz - 20 kHz	4.4 kHz - 20 kHz
86 dB	87 dB	90 dB*
13.5 oz	14.4 oz	5 oz
N/A	N/A	Flush Mount Cup:
N/A	N/A	0.9"(22.8 mm)
		Surface Mount Height:
		1.015"(25.7 mm)
5.0"	5.94"	2.06"
127.0 mm	150.9 mm	52.4 mm
2.72"	2.81"	N/A
69.1 mm	71.4 mm	N/A
3"	3 1/16"	N/A
76.2 mm	77.8 mm	N/A
3/4"	3/4"	N/A
19.1 mm	19.1 mm	N/A
6 13/32"	7 1/4"	N/A
162.7 mm	184.1 mm	N/A
4200 Hz	4200 Hz	4800 Hz
Tweeter &	Tweeter &	1st Order Butterworth
Driver**:	Driver**:
2nd Order	2nd Order
Butterworth	Butterworth

Polk/MOMO Mid/Woofer Technical Sheet

THIELE / SMALL PARAMETERS

	5.25" Mid Driver	6.5" Mid Driver
Freq. Response	68 Hz - 5.5 kHz	50 Hz - 5.5 kHz
Resonant Freq. (Fo, Fs)	68 Hz	50 Hz
Qms	9.06	9.58
Qes	0.61	0.67
Qts	0.58	0.62
Vas	5.27 L	14.61 L
	.186 ft3	.515 ft3
Cms	431 µm/N	493 µm/N
BL	5.5 TM	5.8 TM
Sd	.0093 m2	.0145 m2
	.100 ft2	.156 ft2
Mms	12.6 g	19.8 g
Winding Width	12.7 mm	12.4 mm
	.500in.	.488 in.
Xmax (Linear)	3.4 mm	3.2 mm
	.3132 in.	.126 in.
Xmax (Mechanical)	14.3 mm	15.2 mm
	.562 in.	.600 in.
Le	.265 mH	.313 mH

*When MM400 bought separately sensitivity = 90 dB with loop intact When MM400 bought separately sensitivity = 87 dB with loop cut

**Midrange extension switch on crossover will bypass driver crossover

6 A M E R I C A N P O W E R , I T A L I A N F I N E S S E P O L K A U D I O / M O M O D E S I G N 1