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Old September 22nd 08, 04:28 AM posted to uk.rec.audio
Phil Allison
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Posts: 927
Default Bassreflex design: port diameter is larger than speaker, will it work?


"Eiron"

WinISD will allow you to tweak the box and port size, and show the
frequency response graph.
So there's no problem.



** There IS one trap though - you must have an amplifier with low output
impedance( ie good damping factor) or the response graph model used by
simulators like WinISD are gonna be hopelessly wrong.

Most SS bass guitar and guitar amps have low output impedance - but some
are deliberately made to have a high one. Which is which is not east to
tell as makers very rarely spec it.

With valve guitar amps, the vast majority have high output impedance (
anywhere from 5 to 100 ohms) though again exceptions exist there too.



...... Phil