3 replies to this topic

[tnt1451]

I am just curious whether anybody knows why there is a "spitball" dustcap on the smaller advents, and if anybody would be able to decribe how that would effect the sound of the woofer/speaker.

I have never seen or heard them in person, but have always wondered how that could effect the sound.

[Carlspeak]

IMO, it's there to lower the resonant frequency of the woofer and thus provide bass extension that otherwise would not be possible without it.

[Doug G.]

What Carl said.

The unique dustcap adds mass to the cone and the goal with the Smaller Advent was to equal the low frequency extension of the full sized Advent.

This reduced efficiency but that was partially mitigated by making the Smaller Advent a 4 ohm system.

Doug

[tnt1451]

I thought it had something to do with the added mass, but thought that would make it too inefficient.

Thanks for the info.

Tyson