Hertz Mille MP 250 D4.3 PRO TECHNICAL SPECIFICATIONS

MP 250 D4.3

COMP SUBWOOFER

1200 W

Optional

TECHNICAL SPECIFICATIONS

Component Subwoofer
Woofer size mm (in.) 250 (10)
Voice Coil Ø 65 (2.5)

Power Handling

Impedance Ω 4+4
Centre to centre distance mm (in.) 251 (9.88)
Magnet size

D x d x h
Total driver displacement l (cu.in.) 1,57 (0.03)
Hole diameter mm (in.) 5,5 (0.22)
Weight of one speaker kg (lb) 7.8 (17,2)
Magnet High density flux ferrite

Cone

*Xmech mm (in.) ±27 (1.06)

*Xmech : maximum mechanical excursio n it indicates the motion r ange
in the speaker linear functioning a rea, in both way s.

W peak 1200

W continuos 600

mm
(in.)

156 x 80 x 35
(6.14 x 3.15 x 1.38)

Pressed-pulp cone
with mineral powders

ELECTRO-ACOUSTIC PARAMETERS

D mm 213
Xmax mm 17,00
Re Ω 1,8
Fs Hz 27,00
Le mH 1,60
Vas I 31
Mms g 187,00
Cms mm/N 0,18
BL
Qts 0,5
Qes 0,53
Qms 5,8
Spl dB 83,5

*The Thi ele and Small parameter s are measured w ith coils in para llel.
For series coils sp ecification multiply Re and Le by 4 and BL by 2, all other
specificat ions remain the sa me. The Thiele an d Small pa rameters are
measur ed aft er the speaker ha s been conditioned by a specifi c signal and
repres ent the expec ted long term parameters af ter a short peri od of use.

T•m

10,5

1. Ergonomic, compact design, specifically developed for sealed box enclosures

starting at 17 lt volume.

2. CCAW, 65 mm (2,5”) 4-layer voice coil, capable of handling 1200 W musical

power. The 4 Ω + 4 Ω DVC impedance configuration improves versatility
to match any amplifier system.

3. Voice coil wound on TIL-P material with venting holes behind the winding.

This combines efficient heat dissipation with a high Qms factor (low
mechanical loss) for bursting dynamic sound.

4. Exponential V-cone® with optimized geometry for high cone stiffness and

strong resistance to deformation even at ma ximum excursions.

5. Boundar y Free IIR rubber surround, for higher SPL performance while

keeping a nominal external diameter.

6. Mineral-injected paper cone, for superior rigidit y and damping.

7. Extremely acoustically transparent anti-resonant aluminium alloy basket with

six-spokes standing structure and built-in venting holes underneath the spider.

8. CNC machined elegant diamond-cut basket edge featuring the Hert z logo.

9. Terminal block accepting cables up to 8 AWG to provide ultra-low wiring

resistance in low impedance configurations. A plastic cover prevents any
accidental shor t-circuit.

10. Possibility to secure the subwoofer to the box wall, taking full advantage of

its minimal dimensions.

11. High per formance compact motor with a superior magnetic field transferred

to the coil.

E

C

D

B
A

F

A 268 mm 10.55 in.
B 236 mm 9.29 in.
C 160 mm 6.3 in.
D 141 mm 5.55 in.
E 274 mm 10.79 in.
F 58,5 mm 2.3 in.

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All Specifications Subject to Change Without Notice_16.C

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