Calculating Speaker displacement - Car Audio | DiyMobileAudio.com | Car Stereo Forum

Reply
 
LinkBack Thread Tools Display Modes
Old 03-09-2010   #1
 
DIYMA freshman
Join Date: Jan 2010
Location: Mass
Posts: 6

Rep Power: 0 fotoflojoe will become famous soon enoughfotoflojoe will become famous soon enoughfotoflojoe will become famous soon enoughfotoflojoe will become famous soon enoughfotoflojoe will become famous soon enoughfotoflojoe will become famous soon enough


iTrader: (0)



Default Calculating Speaker displacement

I'm building a box for an a/d/s/ 310px (first box build). Manual recommends a 1.0 cubic foot sealed enclosure. However, the manual doesn't give a spec for the driver's displacement. Could it be that you're supposed to Build a 1.0 cubic foot box, install the speaker, and the airspace left over is what the driver wants. Yeah, I doubt it too.

Is there any method/rule of thumb for calculating Speaker displacement?
Or: does anyone happen to know what the displacement of the 310px is?

BCAE says to wrap the Speaker in plastic, dunk it in a full bucket of water. Whatever it takes to refill the bucket is your displacement figure.
Can't bring myself to dunk a $500 speaker in water!

Thanks!
fotoflojoe is offline   Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
Old 03-09-2010   #2
DIYMA 500 Club
 
Banned
Join Date: Jun 2007
Location: Up to 11 different dimensions
Posts: 12,569

Rep Power: 0 Oliver will become famous soon enoughOliver will become famous soon enoughOliver will become famous soon enoughOliver will become famous soon enoughOliver will become famous soon enoughOliver will become famous soon enoughOliver will become famous soon enough


iTrader: (19)



Default Re: Calculating Speaker displacement

.5 will be close enough for a sealed box

here is a random 10" driver = Displacement – 0.12 cu. ft. ...
Oliver is offline   Reply With Quote Quick reply to this message
Old 03-09-2010   #3
 
DIYMA freshman
Join Date: May 2009
Location: Missouri
Posts: 148

Rep Power: 92 bsvrs will become famous soon enoughbsvrs will become famous soon enoughbsvrs will become famous soon enoughbsvrs will become famous soon enoughbsvrs will become famous soon enoughbsvrs will become famous soon enough


iTrader: (0)



Default Re: Calculating Speaker displacement

Juding from pictures I would say the displacement is around .08-.12 cuft.. Probably not enough to make a difference. If you're really worried about it just stuff the box with polyfill and that will make up for it.
bsvrs is offline   Reply With Quote Quick reply to this message
Old 03-09-2010   #4
DIYMA 500 Club
 
fourthmeal's Avatar
 
DIYMA Been here long time
Join Date: Jan 2007
Location: LV, NV
Posts: 5,750

Rep Power: 900 fourthmeal has a reputation beyond reputefourthmeal has a reputation beyond reputefourthmeal has a reputation beyond reputefourthmeal has a reputation beyond reputefourthmeal has a reputation beyond reputefourthmeal has a reputation beyond reputefourthmeal has a reputation beyond reputefourthmeal has a reputation beyond reputefourthmeal has a reputation beyond reputefourthmeal has a reputation beyond reputefourthmeal has a reputation beyond repute


iTrader: (29)



Default Re: Calculating Speaker displacement

Building a sealed box a little big or a little small won't do much to it. Nice sub, I don't blame you for not wanting to dunk it. I think if you were talking about a ported box, you might have to go through such drama. Not so in this case. I'd just Build the box a little big (or a lot bigger) and enjoy the lower F3 you'll get as a result. Poly too.

Special thanks to all of the industry experts that share their knowledge here on the forum
[2015 Durango R/T, Build almost complete MS-8, Massive NX4 pair, Massive N3, ID X6x9, Wavecor center, Alpine SPX Pro tweeters, Sundown SD3 10's][2014 Focus ST - DLS X-D40 amp, AD600 Component set, AE AV10H-D2 sub]
fourthmeal is offline   Reply With Quote Quick reply to this message
Old 03-09-2010   #5
 
DIYMA freshman
Join Date: Jan 2010
Location: Mass
Posts: 6

Rep Power: 0 fotoflojoe will become famous soon enoughfotoflojoe will become famous soon enoughfotoflojoe will become famous soon enoughfotoflojoe will become famous soon enoughfotoflojoe will become famous soon enoughfotoflojoe will become famous soon enough


iTrader: (0)



Default Re: Calculating Speaker displacement

Thanks for the replies.

Being new-ish at this stuff, I guess that was my main concern: whether it's critical to hit these volume specs right on the mark, or if there's a bit of latitude to play with. I guess there's more latitude than I thought.
fotoflojoe is offline   Reply With Quote Quick reply to this message
Old 03-09-2010   #6
DIYMA 500 Club
 
fourthmeal's Avatar
 
DIYMA Been here long time
Join Date: Jan 2007
Location: LV, NV
Posts: 5,750

Rep Power: 900 fourthmeal has a reputation beyond reputefourthmeal has a reputation beyond reputefourthmeal has a reputation beyond reputefourthmeal has a reputation beyond reputefourthmeal has a reputation beyond reputefourthmeal has a reputation beyond reputefourthmeal has a reputation beyond reputefourthmeal has a reputation beyond reputefourthmeal has a reputation beyond reputefourthmeal has a reputation beyond reputefourthmeal has a reputation beyond repute


iTrader: (29)



Default Re: Calculating Speaker displacement

The more complicated the box (ie. ported and bandpass), the more critical. Sealed boxes are just slightly less complicated than an IB install. enjoy going slightly larger than stock (or measure the T/S params and verify what box size you REALLY want) and enjoy.

Special thanks to all of the industry experts that share their knowledge here on the forum
[2015 Durango R/T, Build almost complete MS-8, Massive NX4 pair, Massive N3, ID X6x9, Wavecor center, Alpine SPX Pro tweeters, Sundown SD3 10's][2014 Focus ST - DLS X-D40 amp, AD600 Component set, AE AV10H-D2 sub]
fourthmeal is offline   Reply With Quote Quick reply to this message
Old 03-10-2010   #7
 
DIYMA freshman
Join Date: Jan 2010
Location: Mass
Posts: 6

Rep Power: 0 fotoflojoe will become famous soon enoughfotoflojoe will become famous soon enoughfotoflojoe will become famous soon enoughfotoflojoe will become famous soon enoughfotoflojoe will become famous soon enoughfotoflojoe will become famous soon enough


iTrader: (0)



Default Re: Calculating Speaker displacement

Quote:
Originally Posted by fourthmeal View Post
The more complicated the box (ie. ported and bandpass), the more critical. Sealed boxes are just slightly less complicated than an IB install. enjoy going slightly larger than stock (or measure the T/S params and verify what box size you REALLY want) and enjoy.
Pardon my ignorance; what is an IB install?

Thanks
fotoflojoe is offline   Reply With Quote Quick reply to this message
Old 03-10-2010   #8
DIYMA 500 Club
 
fourthmeal's Avatar
 
DIYMA Been here long time
Join Date: Jan 2007
Location: LV, NV
Posts: 5,750

Rep Power: 900 fourthmeal has a reputation beyond reputefourthmeal has a reputation beyond reputefourthmeal has a reputation beyond reputefourthmeal has a reputation beyond reputefourthmeal has a reputation beyond reputefourthmeal has a reputation beyond reputefourthmeal has a reputation beyond reputefourthmeal has a reputation beyond reputefourthmeal has a reputation beyond reputefourthmeal has a reputation beyond reputefourthmeal has a reputation beyond repute


iTrader: (29)



Default Re: Calculating Speaker displacement

Infinite Baffle. IE, separation of back wave from front, but no box.

Special thanks to all of the industry experts that share their knowledge here on the forum
[2015 Durango R/T, Build almost complete MS-8, Massive NX4 pair, Massive N3, ID X6x9, Wavecor center, Alpine SPX Pro tweeters, Sundown SD3 10's][2014 Focus ST - DLS X-D40 amp, AD600 Component set, AE AV10H-D2 sub]
fourthmeal is offline   Reply With Quote Quick reply to this message
Old 03-10-2010   #9
DIYMA 500 Club
 
fourthmeal's Avatar
 
DIYMA Been here long time
Join Date: Jan 2007
Location: LV, NV
Posts: 5,750

Rep Power: 900 fourthmeal has a reputation beyond reputefourthmeal has a reputation beyond reputefourthmeal has a reputation beyond reputefourthmeal has a reputation beyond reputefourthmeal has a reputation beyond reputefourthmeal has a reputation beyond reputefourthmeal has a reputation beyond reputefourthmeal has a reputation beyond reputefourthmeal has a reputation beyond reputefourthmeal has a reputation beyond reputefourthmeal has a reputation beyond repute


iTrader: (29)



Default Re: Calculating Speaker displacement

Basic Car audio Electronics learn it, live it, love it.

Special thanks to all of the industry experts that share their knowledge here on the forum
[2015 Durango R/T, Build almost complete MS-8, Massive NX4 pair, Massive N3, ID X6x9, Wavecor center, Alpine SPX Pro tweeters, Sundown SD3 10's][2014 Focus ST - DLS X-D40 amp, AD600 Component set, AE AV10H-D2 sub]
fourthmeal is offline   Reply With Quote Quick reply to this message
Old 03-10-2010   #10
 
DIYMA freshman
Join Date: Feb 2010
Location: OH
Posts: 13

Rep Power: 0 GO 31 will become famous soon enoughGO 31 will become famous soon enoughGO 31 will become famous soon enoughGO 31 will become famous soon enoughGO 31 will become famous soon enoughGO 31 will become famous soon enough


iTrader: (0)



Default Re: Calculating Speaker displacement

For what it's worth, I once making a box once, and like your case, the manufacturer only included box size and not driver displacement. I contacted product support, and they told me the box specs took driver displacement into consideration.
GO 31 is offline   Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
Reply

Bookmarks

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Car Audio | DiyMobileAudio.com | Car Stereo Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:
Location
Where you live
First name
Last name
Do you work in the 12 Volt industry?
Do you work in the 12 Volt industry?
Youtube Channel
Enter Your Youtube Username, And It will Be Linked To In Your Posts!
12V Industry - Company Name
Your company name.
12V Industry - Your Position
Your position in your company.

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.




Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Display Modes

Posting Rules
You may post new threads
You may 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
Trackbacks are On
Pingbacks are On
Refbacks are On


Powered by vBadvanced CMPS v3.2.3

All times are GMT -6. The time now is 12:36 AM.


Powered by vBulletin®
Copyright ©2000 - 2016, Jelsoft Enterprises Ltd.
Search Engine Optimization by vBSEO 3.6.0
Powered by vBadvanced CMPS v3.2.3
vBulletin Security provided by vBSecurity v2.2.2 (Pro) - vBulletin Mods & Addons Copyright © 2016 DragonByte Technologies Ltd.

Ad Management by RedTyger

Home | User CP | Members List | New Posts | ITrader | Faq | Post Spy