Infinity BETA 15" sutable for a tapped horn? - diyAudio
Go Back   Home > Forums > Loudspeakers > Subwoofers

Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Reply
 
Thread Tools Search this Thread
Old 11th September 2010, 11:43 AM   #1
Jimjim is offline Jimjim  New Zealand
diyAudio Member
 
Join Date: Sep 2010
Default Infinity BETA 15" sutable for a tapped horn?

I was referred here from hometheatershack because I was told horns are kore popular here so I'd get more help. This was my question:

Ok, another idea, http://www.trademe.co.nz/Trade-Me-Mo...-316642376.htm .
An Infinity Beta 15", would this be good in a tapped horn?
specs are here: http://www.infinitysystems.com/car/s...ult.aspx?Langu
age=ENG&Country=US&Region=USA
under the product "BETA FIFTEEN [IF17007]"

thanks
  Reply With Quote
Old 11th September 2010, 04:06 PM   #2
tb46 is offline tb46  United States
diyAudio Member
 
Join Date: Jan 2006
Location: Texas
Default Bad Links

Anyone else experiencing bad links?
__________________
Oliver
  Reply With Quote
Old 11th September 2010, 05:11 PM   #3
rkm is offline rkm  Denmark
diyAudio Member
 
Join Date: Jul 2004
Location: somewhere
http://manuals.harman.com/INF/CAR/Owner's%20Manual/Beta15%20om.pdf
  Reply With Quote
Old 11th September 2010, 05:16 PM   #4
bjorno is offline bjorno  Sweden
diyAudio Member
 
Join Date: Mar 2005
Location: Jacobsmountain
Send a message via MSN to bjorno
Quote:
Originally Posted by Jimjim View Post
I was referred here from hometheatershack because I was told horns are kore popular here so I'd get more help...
Hi Jim,

Here-is quick simulation that might be a start :

b
Attached Images
File Type: jpg Beta15_TH.JPG (472.8 KB, 140 views)
  Reply With Quote
Old 11th September 2010, 05:32 PM   #5
tb46 is offline tb46  United States
diyAudio Member
 
Join Date: Jan 2006
Location: Texas
Thanks rkm and bjorno.
__________________
Oliver
  Reply With Quote
Old 12th September 2010, 12:22 AM   #6
Jimjim is offline Jimjim  New Zealand
diyAudio Member
 
Join Date: Sep 2010
Quote:
Originally Posted by bjorno View Post
Hi Jim,

Here-is quick simulation that might be a start :

b
Thanks for that.
It doesn't seem to be too great though does it? Not very efficient and average extension. Do you think it is still worth it?
  Reply With Quote
Old 12th September 2010, 04:18 AM   #7
GM is offline GM  United States
diyAudio Member
 
GM's Avatar
 
Join Date: Jun 2003
Location: Chamblee, Ga.
Just 'running the numbers', this one is ~372 L net/700 w, though whether it's theoretical performance is worth the size/cost is up to you:

GM
Attached Images
File Type: gif Infinity Beta15 17.6 Hz DTS concept - series VCs.gif (22.8 KB, 110 views)
__________________
Loud is Beautiful if it's Clean! As always though, the usual disclaimers apply to this post's contents.
  Reply With Quote
Old 12th September 2010, 08:42 AM   #8
Jimjim is offline Jimjim  New Zealand
diyAudio Member
 
Join Date: Sep 2010
Quote:
Originally Posted by GM View Post
Just 'running the numbers', this one is ~372 L net/700 w, though whether it's theoretical performance is worth the size/cost is up to you:

GM
The response of this one looks far better apart from the peakynees which can be fixed of course. 13 cubic feet doesn't seem awfully bad, I have heaps of room so there would be no trouble fitting it in. Is that 110db at 20hz? For the size and work involved would it be worth it in your opinion?
In the link it appears to be only a single coil Infinity Beta 15" Sub for sale - TradeMe.co.nz - New Zealand but on the site it says it is dual?
I'm guessing that this is the best response possible for it? Or close to best anyway.
  Reply With Quote
Old 12th September 2010, 04:01 PM   #9
tb46 is offline tb46  United States
diyAudio Member
 
Join Date: Jan 2006
Location: Texas
Default Post #7

Hi GM just some quick questions:

1/4 wavelength of 17.6Hz gives me 488.6cm (192.4"). When you are referring to 17.6 Hz, that does mean the length from S1 to S5?

When you call it: "DTS concept - series VCs" does that mean that your simulation had two drivers in series, i.e.: 700 W into 16 Ohm, or a single of the dual voice coil models w/ coils in series, i.e.: 700 W into 8 Ohm?

I'm just asking for interest, the length seems correct for the peaks in your response plot. It may be important to point out that this does not reflect the low end performance at low power levels. I get a -3dB point of about 27 Hz, yours looks a little lower. Also, I cannot find any way to get something like a two driver DTS concept in 372 Liters; for a dual driver tapped horn (with throat coupling chamber) I get about 800 L w/ a -3dB point around 18 Hz (as always, that's net, no wood :-)).

Regards,
__________________
Oliver
  Reply With Quote
Old 12th September 2010, 04:49 PM   #10
tb46 is offline tb46  United States
diyAudio Member
 
Join Date: Jan 2006
Location: Texas
Default Post #9

P.S. to Post #9: I used bjorno's T/S.
__________________
Oliver
  Reply With Quote

Reply


Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

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
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Dual 8" tapped horn = TH-SPUD geitmans Subwoofers 127 3rd September 2014 07:33 PM
TH-Micro - a 6,5" tapped horn martinsson Subwoofers 28 21st September 2013 10:37 AM
15" tapped horn with RCF wood1y Subwoofers 126 9th August 2013 06:21 PM
10" 15hz Tapped Horn jblauvelt Subwoofers 11 7th January 2011 02:36 AM


New To Site? Need Help?

All times are GMT. The time now is 06:14 AM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright ©1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2