Spherical speaker enclosure - Calculations for Bass-Reflex enclosure and Internal Helmholtz absorber

Closed

Descrição

Hi,

I'm looking for somebody to calculate the parameters for the design of a spherical speaker enclosure shape to be manufactured in high-tech concrete. We're using a 5" driver : Tang Band W5 2143 (complete specs below and spec sheet available for download).

- Calculate correct internal volume for Bass-reflex operation (Bessel alignment with FB of 45.7 Hz)

- Recommendation for placement and number of Bass-reflex ports to avoid port resonance the most possible.

- Calculate correct dimensions of a Internal Helmholtz absorber to lower the enclosures internal resonance.

- As a plus It might be interesting to to look into modelling the enclosure in COMSOL or other FEA application to be able to reduce resonances even further.

Thiele/Small parameters of W5 2143 driver below :

------------------------------------------------------------

Resonant Frequency (Fs)55 Hz

DC Resistance (Re)6.3 ohms

Voice Coil Inductance (Le)[url removed, login to view] mH

Mechanical Q (Qms)[url removed, login to view]

Electromagnetic Q (Qes)[url removed, login to view]

Total Q (Qts)[url removed, login to view]

Compliance Equivalent Volume (Vas)[url removed, login to view] ft.³

Mechanical Compliance of Suspension (Cms)[url removed, login to view] mm/N

BL Product (BL)[url removed, login to view] Tm

Diaphragm Mass Inc. Airload (Mms)[url removed, login to view]

Maximum Linear Excursion (Xmax)2.5 mm

Surface Area of Cone (Sd)[url removed, login to view] cm²

Habilidades: Análise de Elementos Finitos, Engenharia Mecânica, Física

Ver mais: calculations adobe, financial calculations formulas, russian english speaker, english italian speaker needed, groupjive internal server error, government job russian speaker, hydraulic force calculations, romania english native speaker price, bosnian native speaker, words translation speaker english latin, speaker logo designer, british accent virtual speaker, french speaker, native english speaker expenses included

ID do Projeto: #11758566