Advice for a big room FR speaker build - Page 2

planet10 · 27th July 2012, 07:15 PM

If my study of the 8" drivers is any indication, i'd approch the alnico carefully. With the 8s it sure looks like the alnico is there for marketing purposes as the motor on them is much less powerful than the others.

dave

eventhorizon · 27th July 2012, 07:20 PM

The prices of the Neo models have gone up considerably. Company claims almost twice the bass output with the AlNiCos.

StevenZ · 27th July 2012, 07:25 PM

This is exciting. I'm in.

planet10 · 27th July 2012, 08:27 PM

Quote:

Originally Posted by eventhorizon

The prices of the Neo models have gone up considerably. Company claims almost twice the bass output with the AlNiCos.

With much less motor that would make sense. Loss of efficiency a bit over 4 dB, sonot more bass, less mid-treble.

dave

eventhorizon · 27th July 2012, 08:33 PM

I am wondering if anyone has attempted to retrofit an Altec A7 cabinet and used an Aperodic stuffed port instead of the open port in front. A lot of the vintage 15" coax/triaxs worked pretty well in these cabinets with some port tuning. Which was easy enough since the front panel is removable.

http://www.lansingheritage.org/image...closures11.jpg

hm · 28th July 2012, 12:51 PM

what do you think about this:
Horn-sat + 2 Alphorn

Bigun · 02:00 AM

Quote:

Originally Posted by eventhorizon

The prices of the Neo models have gone up considerably. Company claims almost twice the bass output with the AlNiCos.

The extra bass with the AlNiCo may not be what you think - it maybe simply be a consequence of higher Qts from the driver. In the same cabinet as the Ferrite driver it will sound more bass heavy than the non-AlNiCo but that maybe because of a boosted frequency response curve. You can achieve the same with the non-AlNiCo if you design the box appropriately - but most people prefer not to have a hump in the bass response (except perhaps as a form of baffle step compensation).

I don't like the look of the FR plot for the AN 15 Neo, it has a bump in the treble that's quite different than the Ferrite although I haven't had a chance to hear it myself.

I'm planning to design and build a cabinet for my own AN Super 15 soon. Looking at simulations it wants a volume of 250 litres or larger. And it may be more suited to a sealed cabinet than a ported one.

eventhorizon · 31st July 2012, 06:07 PM

I have very large cabinets Approx 15" L x 15" W x 74" H with 2 openings for 12" drivers. I am wondering how an AN 12" Cast driver would work with a 12" woofer wired in parallel in such a cabinet. Any woofer suggestions?

AStroop · 19th December 2012, 01:07 PM

Hi everyone!
Just wanted to revive this thread as I am in the same situation with a big room and not knowing what to do.
Was thinking FAST system or a Big Horn or even something like those big AN's
Any advice welcome and certainly would love to hear how this project ended up!
Kindest regards
Adrian

Bigun · 19th December 2012, 11:59 PM

My projected ended up in my living room. Still some experiments to be done but if you have the room and are willing to build a large box I'd go all the way and get the 15" units.

A Big'un - the Audio Nirvana Super 15

27th July 2012, 07:15 PM	#11
planet10 frugal-phile(tm) diyAudio Moderator Join Date: Oct 2001 Location: Victoria, BC, NA, Sol III Blog Entries: 5	If my study of the 8" drivers is any indication, i'd approch the alnico carefully. With the 8s it sure looks like the alnico is there for marketing purposes as the motor on them is much less powerful than the others. dave __________________ community sites t-linespeakers.org, frugal-horn.com, frugal-phile.com ........ commercial site planet10-HiFi p10-hifi forum here at diyA

19th December 2012, 11:59 PM	#20
Bigun diyAudio Member Join Date: Jan 2009 Blog Entries: 2	My projected ended up in my living room. Still some experiments to be done but if you have the room and are willing to build a large box I'd go all the way and get the 15" units. A Big'un - the Audio Nirvana Super 15 __________________ "The test of the machine is the satisfaction it gives you. There isn't any other test. If the machine produces tranquility it's right. If it disturbs you it's wrong until either the machine or your mind is changed." Robert M Pirsig.

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27th July 2012, 07:20 PM	#12
eventhorizon diyAudio Member Join Date: Jul 2012	The prices of the Neo models have gone up considerably. Company claims almost twice the bass output with the AlNiCos.

27th July 2012, 07:25 PM	#13
StevenZ diyAudio Member Join Date: Jul 2010	This is exciting. I'm in.

27th July 2012, 08:33 PM	#15
eventhorizon diyAudio Member Join Date: Jul 2012	I am wondering if anyone has attempted to retrofit an Altec A7 cabinet and used an Aperodic stuffed port instead of the open port in front. A lot of the vintage 15" coax/triaxs worked pretty well in these cabinets with some port tuning. Which was easy enough since the front panel is removable. http://www.lansingheritage.org/image...closures11.jpg

31st July 2012, 06:07 PM	#18
eventhorizon diyAudio Member Join Date: Jul 2012	I have very large cabinets Approx 15" L x 15" W x 74" H with 2 openings for 12" drivers. I am wondering how an AN 12" Cast driver would work with a 12" woofer wired in parallel in such a cabinet. Any woofer suggestions?

19th December 2012, 01:07 PM	#19
AStroop diyAudio Member Join Date: May 2012 Location: OZ in Berlin	Hi everyone! Just wanted to revive this thread as I am in the same situation with a big room and not knowing what to do. Was thinking FAST system or a Big Horn or even something like those big AN's Any advice welcome and certainly would love to hear how this project ended up! Kindest regards Adrian