Eighteen Sound |
15MB650 |
15MB650-8 |
ALT150650WF08FA |
Cone driver |
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Brand Eighteen Sound |
Model 15MB650 |
TLHP code 15MB650-8 |
Manufacturer code ALT150650WF08FA |
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Product type Cone driver |
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The 15MB650 high output mid bass has been designed for use as a bass and low-midrange driver in tuned reflex enclosures, in 2- or 3-way systems. When used in a 2-way system, we recommend a 1" or 2" exit compression driver to obtain the best sound quality and directional control.
The 15MB650 combines a high sensitivity value (101dB 1W/1m) with high power handling capabilities. The curvilinear paper cone, in conjunction with the viscose dampened double half-roll suspension, provides excellent transient response and cone damping.
The 75 mm Ø copper voice coil utilises the same technology fitted to our top-of-the-range 4" voice coil models.
It employs the Interleaved Sandwich Voice coil (ISV), in which a high strength fiberglas former carries windings on the outer and inner surfaces to achieve a mass balanced coil. This results in an extremely linear motor assembly with a reduced tendency for eccentric behavior when driven hard. The low inductance coil gives improvements in transient response.
Excellent heat dissipation has been achieved by incorporating air channels in the basket design, between the basket and top plate.
Maximum flux concentration and force factor in the gap are assured by the unique shape and design of the face and back plates, which have been created using our in-house Magnetic Flux FEA CAD resource. The special treatment applied to the top and the back plate is far more resistant to the corrosive effects of salts and oxidization than any other treatment in use.
101,5 dB SPL 1W / 1m average sensitivity
75 mm (3 in) Interleaved Sandwich Voice coil (ISV)
400 W AES power handling
Excellent transient response and cone damping
Improved heat dissipation via unique basket design
Ideal for compact two way, multiway systems and horn design
General |
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Product type | Cone driver |
Brand | Eighteen Sound |
Reference | 15MB650 |
Product code | ALT150650WF08FA |
Informations |
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Nominal impedance | 8 ohm |
Dimensional category | 15 inch |
Frequency coverage type | Sub, Low, Midbass |
Manufacturer sensitivity | 10150 dB |
Calculated sensitivity | 98.82 dB |
Nominal power handling | 400 W |
Max power handling | 600 W |
Bandwidth | 50÷4800 Hz |
Fundamental parameters |
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Sd | 900 cm² |
Mms | 77 gr |
Cms | 208 µm/N |
Le | 1.36 mH |
Re | 5.5 ohm |
BL | 20 T.m |
Small signal parameters |
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Fs | 40 Hz |
Qes | 0.27 |
Qms | 3.95 |
Qts | 0.26 |
Vas | 210 L |
Datas |
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Xmax | ±4 mm |
EBP | 148 Hz |
Fs / Qts | 154 Hz |
Vas * Qts² | 14.2 L |
Calculated efficiency | 4.78 % |
Weight | ~8.3 kg |
Dimensions |
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Voice coil diameter | 3 inch |
Outside diameter | 387 mm |
Baffle cutout diameter | 353 mm |
Depth | 167 mm |
Front thickness | 19 mm |
Depth after front | 148 mm |
Shape & Materials |
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Front chape | Cylindrical |
Magnet type | Ferrite |
This system is only available for technical questions. For questions of prices, availability of products and deadline thank you to send your request by the contact page.
* Frequency response curve of 15MB650 made on 125 lit. enclosure tuned 50hz in free field (4π) environment. Enclosure closes the rear of the driver. The thin line represents 45 deg. off axis frequency response.
* Free air impedance magnitude curve.