B20 Build Questions

noahlambert · 3rd June 2010, 03:53 AM

I just built a small set of bookshelf speakers with the Pioneer B20 full range drivers and the 5/8" tweeters recommended in previous posts. I am very happy with the results but I would like a little more low end. I had all but decided to build the transmission line cabinets that Nelson Pass recommended when I stumbled across five Mccauley 6244 15" drivers for a song. I have not purchased them yet but they are available if I am interested. Now I am contemplated turning this "full range" project into what would be essentially a 3-way with an extended midrange driver.

The specs of the Mccauley driver are in PDF format here.

I don't know whether to just build the transmission lines (a proven design) and be done with it or try to incorporate these large drivers.

I do not know how to build a crossover so I guess I would just purchase a prebuilt low pass filter from PE and run the B20 full range.

Any thoughts?

planet10 · 3rd June 2010, 04:32 AM

Running the numbers on the 6244, you can probably get lower bass out of the B20... just not nearly as much.

dave

noahlambert · 3rd June 2010, 04:57 AM

Interesting. I'm actually listening to these B20 bookshelf speakers right now and I am really enjoying their clarity. I wonder if the addition of the McCauley drivers would just confuse the issue.

3rd June 2010, 03:53 AM	#1
noahlambert diyAudio Member Join Date: May 2008	B20 Build Questions I just built a small set of bookshelf speakers with the Pioneer B20 full range drivers and the 5/8" tweeters recommended in previous posts. I am very happy with the results but I would like a little more low end. I had all but decided to build the transmission line cabinets that Nelson Pass recommended when I stumbled across five Mccauley 6244 15" drivers for a song. I have not purchased them yet but they are available if I am interested. Now I am contemplated turning this "full range" project into what would be essentially a 3-way with an extended midrange driver. The specs of the Mccauley driver are in PDF format here. I don't know whether to just build the transmission lines (a proven design) and be done with it or try to incorporate these large drivers. I do not know how to build a crossover so I guess I would just purchase a prebuilt low pass filter from PE and run the B20 full range. Any thoughts?

3rd June 2010, 04:32 AM	#2
planet10 frugal-phile(tm) diyAudio Moderator Join Date: Oct 2001 Location: Victoria, BC, NA, Sol III Blog Entries: 4	Running the numbers on the 6244, you can probably get lower bass out of the B20... just not nearly as much. dave __________________ community sites t-linespeakers.org, frugal-horn.com ........ commercial site planet10-HiFi p10-hifi forum here at diyA

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3rd June 2010, 04:57 AM	#3
noahlambert diyAudio Member Join Date: May 2008	Interesting. I'm actually listening to these B20 bookshelf speakers right now and I am really enjoying their clarity. I wonder if the addition of the McCauley drivers would just confuse the issue.

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