Eighteen Sound |
8MB500 |
8MB500-8 |
ALT080500WF08FA - 0220889000 |
Cone driver |
Sold by piece |
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Brand Eighteen Sound |
Model 8MB500 |
TLHP code 8MB500-8 |
Manufacturer code ALT080500WF08FA - 0220889000 |
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Product type Cone driver |
Sales packaging Sold by Piece |
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This product is in the process of supply to be in stock.
Reserved on order
Next TLHP reception estimated between Aug 2, 2024 and Aug 9, 2024
95 dB SPL 1W / 1m average sensitivity
51 mm (2 in) Interleaved Sandwich Voice coil (ISV)
400 Watt program power handling
Triple roll suspension for increased motion control
Weather protected treated cellulose cone
Lightweight diecast aluminum basket design
Suitable for compact two way and multiway systems
The 8MB500 mid-bass transducer has been developed in response to a specific market requirement for a 200 mm (8 in) midbass driver which combines excellent linearity with good
efficiency and power handling capabilities. It is primarily intended for use as a midbass driver in compact 2-way reflex enclosures with a 1 inch compression driver or tweeter but as a result of its versatile characteristics, it can also be used in multiway systems. The curvilinear, treated paper cone is formed using a unique wood pulp composition designed to achieve the best possible rigidity and stiffness. This is carried by a polycotton multiroll surround to provide increased excursion whilst controlling break up modes. The 50 mm (2 inch) aluminum wire voice coil employs same Interleaved Sandwich Voice coil (ISV) technology. It is composed of a high strength fiberglas former carrying windings on both the outer and inner surfaces to achieve a mass balanced coil. This results in an extremely linear motor assembly which, in conjunction with the highly advanced design of the magnetic structure, provides a high force factor or BL. The voice coil is cooled by incorporating airways between the chassis back plate and the magnetic top plate to channel heated air away from the voice coil and gap and dissipate it. Inhouse FEA CAD facilities have been used to optimise flux density and BL factor within the air gap. Due to the increasing use of sound systems at outdoor events, the 8MB500 ability to perform in humid environments is a key feature. This has been achieved using an exclusive cone treatment which renders the cone resistant to humidity.
General |
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Product type | Cone driver |
Brand | Eighteen Sound |
Reference | 8MB500 |
Product code | ALT080500WF08FA - 0220889000 |
Informations |
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Nominal impedance | 8 ohm |
Dimensional category | 8.5 inch |
Frequency coverage type | Midbass, Midrange, High midrange |
Manufacturer sensitivity | 95 dB |
Calculated sensitivity | 94.17 dB |
Nominal power handling | 280 W |
Max power handling | 400 W |
Bandwidth | 60÷4500 Hz |
Fundamental parameters |
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Sd | 230 cm² |
Mms | 17 gr |
Cms | 276 µm/N |
Le | 0.6 mH |
Re | 5.1 ohm |
BL | 9 T.m |
Small signal parameters |
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Fs | 74 Hz |
Qes | 0.51 |
Qms | 2.66 |
Qts | 0.43 |
Vas | 21.5 L |
Datas |
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Xmax | ±6 mm |
EBP | 145 Hz |
Zmin | 5.8 ohm |
Fs / Qts | 172 Hz |
Vas * Qts² | 3.98 L |
Calculated efficiency | 1.64 % |
Weight | ~3.4 kg |
Recommended load volume | 25 L |
Dimensions |
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Voice coil diameter | 2 inch |
Outside diameter | 210 mm |
Baffle cutout diameter | 186 mm |
Depth | 99 mm |
Front thickness | 14 mm |
Depth after front | 85 mm |
Diamètre aimant (mm) | 134 mm |
Shape & Materials |
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Front chape | Cylindrical |
Magnet type | Ferrite |
Basket masterial | Aluminium |
Winding material | Aluminium |
Surround shape | Triple roll |
Surround material | Cloth |
Cone shape | Curvilinear |
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 8MB500 MADE ON 25 LIT. ENCLOSURE TUNED 65HZ IN FREE FIELD (4PI) ENVIRONMENT. ENCLOSURE CLOSES THE REAR OF THE DRIVER. THE THIN LINE REPRESENTS 45 DEG. OFF AXIS FREQUENCY RESPONSE
* FREE AIR IMPEDANCE MAGNITUDE CURVE
This product is under manufacturer's warranty. This warranty protect you for the manufacturing defaults. The warranty does not protect for abnormal use of the product.