MOUNTING INFORMATION:

Overall Diameter

285

mm

Mounting Bolt Circle Diameter

268

mm

Number and Size of Bolts

4

M5

Baffle Cutout Diameter

253

mm front mount

Baffle Cutout Diameter

245

mm rear mount

Depth

107

mm below front flange

Depth

119

mm total depth

Weight

4.9

Kg.

On axis response curve representative of a typical production unit

THIELE-SMALL PARAMETERS:

Fs

24

Hz

Re

5.9

ohms

Qa

2

 

Qe

0.35

 

Qt

0.3

 

Vas

126

litres

Xmax

5.5

mm

Sd

288

cm2

Vd

158

cm3

Le

1

mH

SUGGESTED ENCLOSURES: (Reflex)

APPLICATION:

 

BASS LOUDSPEAKER 250mm (10")
Bass in Studio Monitors

FEATURES: The B250.8 features a symmetrical field magnet and long voice coill for large linear excursion capability. It also has double rear suspensions whose characteristics are matched to that of the motor assembly for stability and linearity at high drive levels. An extended centre pole is utilised to minimise distortion inducing inductance swing at high power levels. The Thiele-Small parameters are optimised for bass extension.

SPECIFICATIONS:

 

Nominal Diameter

250

mm

Power Capacity

150

watts

Sensitivity

89

dB/watt/m

Frequency Range

24-1000

Hz

Impedance

4/8/16

ohms

Bl Factor

10.6

N/A

Voice Coil Diameter

38

mm

Voice Coil Material

 

Copper

Maximum Excursion

25

mm (before damage)

Magnet Assembly Weight

3.6

Kg

Effective Moving Mass

0.044

Kg

Compliance

0.00099

M/N

Volume displaced by unit

1.1

litres

Connection

  

5 mm solder terminals

Chassis

 

Diecast Aluminium

Volume Litres

Vent dia. cm.

Vent length cm.

System
Q

-3db freq. Hz.

35

7.5

39.6

5

46

60

7.5

15

7

35

We reserve the right to amend specification without prior notice.
Made in England by Volt Loudspeakers Ltd.