Half Calhoun?

Telrab · 25th April 2008, 05:41 PM

Hello i've created a testcabinet with 2x FR125 (bipole configuration, sealed enclosure, based on planet10-designplans). I like the sound, but i'm also drawn to the (half-)Calhoun. For now i've 2 questions :
1. What's are the main differences between Calhoun and sealed-bipole SQ-wise?
2. Are there any plans for the half-Calhoun or would it be sufficient to half the height and double the width of the originial Calhoun?

Thanks in advance for your help,
Bart

Cal Weldon · 28th April 2008, 07:14 PM

Hi Bart,

I can't answer those questions as the box was designed for me not by me. I will ask around and see if I can get you a response. Glad to hear you have an interest. I am pleased with mine but they are still in unfinished boxes for now till I find some room for them.

planet10 · 28th April 2008, 07:37 PM

So many spawn, even i am having trouble keeping track. I do believe i have a half-Cal in my email.

Cal's Calhouns are the best box i have yet heard for the CSS WR125s...

dave

Cal Weldon · 28th April 2008, 08:14 PM

A picture if you haven't already seen them. I much prefer the side mounting of one driver over both on front.

Telrab · 28th April 2008, 09:08 PM

Cal and Dave,

Nice to know that they are the best xR125 box you've heard. To improve WAF i would like to build the half-version. Side-mounting looks like a nice trick. Are the cabinets to be placed against the wall for full BSC?

Bart

Cal Weldon · 28th April 2008, 09:09 PM

They work well away from the wall as well but I always say you should experiment to your liking. The WR's have plenty to offer in the bass department.

Scottmoose · 28th April 2008, 10:45 PM

IIRC I emailed Dave some CSS dimensions so watch this space. I retuned it a bit too to give a little more LF gain.

Telrab · 29th April 2008, 10:46 AM

Scott, do you have any idea about the -3db point in the bass-response?

Scottmoose · 29th April 2008, 11:43 AM

Depends on the amplifier & the room. ~50Hz as a very rough guide. Ultimate extension wasn't a priority.

Cal Weldon · 2nd May 2008, 10:27 PM

Yes, I think if you are concerned with extension, you can consider a helper woofer in a separate box. The Calhouns offer sufficient bass but not that deep. Hey it's only a 4.5" driver.

25th April 2008, 05:41 PM	#1
Telrab diyAudio Member Join Date: Mar 2006 Location: holland	Half Calhoun? Hello i've created a testcabinet with 2x FR125 (bipole configuration, sealed enclosure, based on planet10-designplans). I like the sound, but i'm also drawn to the (half-)Calhoun. For now i've 2 questions : 1. What's are the main differences between Calhoun and sealed-bipole SQ-wise? 2. Are there any plans for the half-Calhoun or would it be sufficient to half the height and double the width of the originial Calhoun? Thanks in advance for your help, Bart

28th April 2008, 07:14 PM	#2
Cal Weldon Speakerholic diyAudio Moderator Join Date: Jan 2004 Location: British Columbia	Hi Bart, I can't answer those questions as the box was designed for me not by me. I will ask around and see if I can get you a response. Glad to hear you have an interest. I am pleased with mine but they are still in unfinished boxes for now till I find some room for them. __________________ Next stop: Margaritaville Some of Cal's stuff \| Cal Weldon Consulting

28th April 2008, 07:37 PM	#3
planet10 frugal-phile(tm) diyAudio Moderator Join Date: Oct 2001 Location: Victoria, BC, NA, Sol III Blog Entries: 4	So many spawn, even i am having trouble keeping track. I do believe i have a half-Cal in my email. Cal's Calhouns are the best box i have yet heard for the CSS WR125s... dave __________________ community sites t-linespeakers.org, frugal-horn.com ........ commercial site planet10-HiFi p10-hifi forum here at diyA

28th April 2008, 09:09 PM	#6
Cal Weldon Speakerholic diyAudio Moderator Join Date: Jan 2004 Location: British Columbia	They work well away from the wall as well but I always say you should experiment to your liking. The WR's have plenty to offer in the bass department. __________________ Next stop: Margaritaville Some of Cal's stuff \| Cal Weldon Consulting

2nd May 2008, 10:27 PM	#10
Cal Weldon Speakerholic diyAudio Moderator Join Date: Jan 2004 Location: British Columbia	Yes, I think if you are concerned with extension, you can consider a helper woofer in a separate box. The Calhouns offer sufficient bass but not that deep. Hey it's only a 4.5" driver. __________________ Next stop: Margaritaville Some of Cal's stuff \| Cal Weldon Consulting


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28th April 2008, 09:08 PM	#5
Telrab diyAudio Member Join Date: Mar 2006 Location: holland	Cal and Dave, Nice to know that they are the best xR125 box you've heard. To improve WAF i would like to build the half-version. Side-mounting looks like a nice trick. Are the cabinets to be placed against the wall for full BSC? Bart

28th April 2008, 10:45 PM	#7
Scottmoose diyAudio Member Join Date: Mar 2005 Location: UK	IIRC I emailed Dave some CSS dimensions so watch this space. I retuned it a bit too to give a little more LF gain.

29th April 2008, 10:46 AM	#8
Telrab diyAudio Member Join Date: Mar 2006 Location: holland	Scott, do you have any idea about the -3db point in the bass-response?

29th April 2008, 11:43 AM	#9
Scottmoose diyAudio Member Join Date: Mar 2005 Location: UK	Depends on the amplifier & the room. ~50Hz as a very rough guide. Ultimate extension wasn't a priority.

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