| Power tapering Idea - Mass loading ? [message #22429] |
Wed, 12 January 2005 05:54  |
flacoman
Messages: 12
Registered: May 2009
|
Chancellor |
|
|
Having read the white paper on line sources , I pondered the idea of mass-loading the outer drivers ,rather than lowering the drive signal.
By mass loading you lower the sensitivity and Fs, thus sneaking a little more extension out of the smallish drivers used . Bill: any thoughts?TIA
Jorge
|
|
|
|
| Re: Power tapering Idea - Mass loading ? [message #22430 is a reply to message #22429] |
Fri, 14 January 2005 08:20  |
Adrian Mack
Messages: 568
Registered: May 2009
|
Illuminati (1st Degree) |
|
|
|
Hi Jorge I think you are referring to adding extra mass to the cone? You're 100% right - adding extra mass will lower Fs, lower sensitivity and will also raise Qms and hence Qts. It will reduce excursion-limited power handling though, if your intent is to use it at lower frequencies, which is what I think you want to do as you wouldn't add extra mass unless you wanted it to do deeper. Adrian
|
|
|
|
| Re: Power tapering Idea - Mass loading ? [message #22431 is a reply to message #22429] |
Fri, 14 January 2005 08:35 |
lcholke
Messages: 73
Registered: May 2009
|
Viscount |
|
|
|
Jorge, The 90deg phase point will be at a lower fs than the other drivers. I think this would be similar to moving the driver a few inches away from the listener. 10 deg at 100 hz is .091m (about 4").
(330/100 ) x (10/360) = .091m
-Linc
|
|
|
|
| Power tapering Idea - Mass loading ? [message #22432 is a reply to message #22430] |
Fri, 14 January 2005 10:29 |
flacoman
Messages: 12
Registered: May 2009
|
Chancellor |
|
|
|
That's the exact idea . If I spread the power handling out across enough drivers , I should likely br OK. I'm thinking along the lines of a few coats of epoxy spray paint to stiffen the cone and a topcoat of damping goop. Having loaded up largish woofers in the past , I can't say too much about the midrange qualities of such a driver Thanks all ,and more comment welcomed . peace
Jorge
|
|
|
|
|
|
Posting Rules
Members
Search
Help
Register
Login
Get a T-Shirt!
