Go Back   TeamTalk > Maintenance Tips, How-tos and Refurbishing Topics > Audio/Stereo

Thread Tools Display Modes
Old 10-12-2013, 12:12 AM
MC25's Avatar
MC25 MC25 is offline
MC Master Poster
Join Date: Nov 2007
Boat: 2016 X30, 85 S&S
Location: Grapevine, Texas
Posts: 14,317
so add that to your mile long list of winter projects... lol



2016 X30-Wetsounds galore
2017 Misty Harbor Tri-Toon
1985 S&S- Gone but never forgotten
Reply With Quote
Old 10-12-2013, 10:11 AM
David Analog's Avatar
David Analog David Analog is offline
MC Fanatic
Join Date: Sep 2013
Boat: N/A
Location: Texas
Posts: 588
Originally Posted by Aric'sX15 View Post
does it make a noticeable difference with the cans sealed completely like that? in other words, is it worth the work?
Sure it is. Look at it this why. You have to compress and rarify the air molecules within the pod to the same degree as you do external to the speaker midbass cone. In other words, the internal displacement has to match the external displacement. But since the pod is so small, this creates far more internal pressure than the external open air. With that much pressure it only takes a very small leak. If those positive and negative pressures are allowed to escape the pod then those waveforms are opposite (inverted) of the speakers's external radiation which causes direct cancellations below frequencies (wavelengths) that are longer half this distance. This condition also serves to undermine any damping of the speaker (not only the air springyness of the trapped air in the pod but the natural resistance of open air. So, there goes the midbass, control, SQ, and your power handling.
In an IB coaming speaker you do not need a small pod since the speaker is intended for this type of expansive cavity. This type of speaker is self-damped to a greater degree and less dependent on the air spring of trapped air for control. But you still must have the front to rear acoustic isolation.
Reply With Quote

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

All times are GMT -4. The time now is 09:00 PM.