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Multi-Way Conventional loudspeakers with crossovers

Subwoofer for an VOT A7
Subwoofer for an VOT A7
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Old Yesterday, 07:43 AM   #41
jakruby is offline jakruby  South Africa
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So seal the 416 into the "upper" compartment. Mount a woofer in the new "lower" compartment and all of said woofer's output will exit through the port. What kind of enclosure would that be? Surely you would want some direct sound from the woofer and use the port to augment lower end?
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Old Yesterday, 12:54 PM   #42
Pano is online now Pano  United States
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Subwoofer for an VOT A7
You're half way there.

Close off the woofer into it's own small box. Like putting a partition just below the woofer horn. Now you have the whole lower box (maybe 10 cubic feet) to use has your subwoofer enclosure. You replace the front baffle with a new baffle that has your subwoofer driver in it, along with the new ports you need for that subwoofer. Just like any normal bass reflex cabinet.

Your 825/828 cabinet now has two chambers. An upper chamber that contains the woofer and its horn, and a larger chamber that is your subwoofer.
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Old Yesterday, 02:18 PM   #43
Pano is online now Pano  United States
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Subwoofer for an VOT A7
This is where a picture might be worth its 1000 words.
You would add ports to the lower section if doing bass reflex.
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File Type: png A7 with sub.png (15.4 KB, 35 views)
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Old Yesterday, 03:17 PM   #44
Pano is online now Pano  United States
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Subwoofer for an VOT A7
Here is a more accurate drawing and more to scale.
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File Type: png Altec-A7-with-sub.png (29.7 KB, 30 views)
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Old Today, 02:49 AM   #45
GM is offline GM  United States
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Old Today, 02:59 AM   #46
GM is offline GM  United States
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Quote:
Originally Posted by jakruby View Post
So seal off the front of the horn and just use the port?
I knew sure as I didn't post a link, someone would misunderstand.

Unfortunately, the original threads are MIA and some of these may be duplicates, just copied what I could quickly find doing a search of me [GM] and [2245] for the ones done using the JBL 2245H since at that time the Altec 411 I used was basically MIA since GPA couldn't do a proper recone even if a motor basket could be found, so in no particular order:

Getting more bass out of 825-828 cabs

would a 411 8A make a good speaker for a sub?

A7's with subs?

A Frenchman's version: Altec voix du Theatre A7/A5 anybody done this?

What to do with Altec A7 cabs..? | Audiokarma Home Audio Stereo Discussion Forums

http://www.hostboard.com/forums/f700...light=jbl+2245

http://www.hostboard.com/forums/f700...light=jbl+2245

http://www.hostboard.com/forums/f700...light=jbl+2245

http://www.hostboard.com/forums/f700...light=jbl+2245

http://www.hostboard.com/forums/f700...light=jbl+2245

http://www.hostboard.com/forums/f700...light=jbl+2245

http://www.hostboard.com/forums/f700...light=jbl+2245

Only picture I could find: https://www.hostboard.com/forums/att...l-2245-sub-jpg

GM
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