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Forum: Speakers   12-19-2014, 06:35 PM
Replies: 9
Views: 76
Posted By Jay1
Well that will do it... A vertical mtm has a very...

Well that will do it... A vertical mtm has a very tight listening window in the vertical plane due to lobbing between the dual woofers covering the same frequency range. When you place the speakers...
Forum: Subwoofers, Bass, and Transducers   12-19-2014, 06:04 PM
Replies: 6
Views: 80
Posted By Jay1
I don't understand commercial subs that bottom...

I don't understand commercial subs that bottom out. That to me is unacceptable and just flat out lazy engineering. A few minutes with a modeling program will tell you if the amp in question is ideal...
Forum: Speakers   12-19-2014, 04:10 PM
Replies: 9
Views: 76
Posted By Jay1
Can you post a picture of how you have them setup?

Can you post a picture of how you have them setup?
Forum: Speakers   12-19-2014, 02:20 PM
Replies: 4
Views: 95
Posted By Jay1
Nice join date to post count ratio! ...

Nice join date to post count ratio!

Definitely keep the subs. Those guys should be killer in a room that size. You are going to want to replace your LCR with something with a more controlled...
Forum: DIY Speakers and Subs   12-19-2014, 11:29 AM
Replies: 3
Views: 45
Posted By Jay1
Maybe this guy? ...

Maybe this guy?

http://www.parts-express.com/hivi-m6n-6-aluminum-magnesium-midbass--297-441

Check the mounting info spec and see if it matches
Forum: Subwoofers, Bass, and Transducers   12-18-2014, 07:20 PM
Replies: 7
Views: 146
Posted By Jay1
The modeled -3 db point would be 24hz. Corner...

The modeled -3 db point would be 24hz. Corner loaded in room would easily reach 20hz. With a 300 watt amp you would have 110db output capability from 1 sub. This would have about 6 db more output at...
Forum: Subwoofers, Bass, and Transducers   12-17-2014, 09:10 PM
Replies: 7
Views: 146
Posted By Jay1
Honestly though if you're going to spend that...

Honestly though if you're going to spend that much money on a cabinet you might as well get the 3 ft3 box for a few bucks more and buy a new driver like this Infinity 1260W
...
Forum: Subwoofers, Bass, and Transducers   12-17-2014, 09:03 PM
Replies: 7
Views: 146
Posted By Jay1
You can use that box but you will have to cut the...

You can use that box but you will have to cut the port size down to about 13" long which will tune you to 25hz. That will still work fine. With a 3" port you need to leave at least 3" from the inner...
Forum: DIY Speakers and Subs   12-17-2014, 08:32 PM
Replies: 2
Views: 94
Posted By Jay1
The 1 ft3 box probably works best though you...

The 1 ft3 box probably works best though you could go up to 2 ft3 and gain a couple db advantage down low. Either way you're only going to be able to use a 100 watt amp due to the very low tuning...
Forum: Subwoofers, Bass, and Transducers   12-17-2014, 04:24 PM
Replies: 12
Views: 351
Posted By Jay1
http://www.avsforum.com/content/type/61/id/350985/...

http://www.avsforum.com/content/type/61/id/350985/flags/LL

Since cost is no object.... Front and back wall with 18" LMS Ultras and a dedicated 100 amp line with a Crown 6002 XTi for every pair of...
Forum: Subwoofers, Bass, and Transducers   12-17-2014, 03:58 PM
Replies: 7
Views: 146
Posted By Jay1
Yes you can reuse those 10" woofers. Luckily they...

Yes you can reuse those 10" woofers. Luckily they are specd like an average woofer and not a stereotypical car sub. You have two options, you can go with a small sealed box (0.75 - 1 ft3) and use the...
Forum: DIY Speakers and Subs   12-17-2014, 02:10 PM
Replies: 8
Views: 228
Posted By Jay1
Your design is fine as is. If your tune did end...

Your design is fine as is. If your tune did end up lower then spec'd you will actually end up with a flatter response, so it's a non issue.
Forum: DIY Speakers and Subs   12-17-2014, 11:48 AM
Replies: 8
Views: 228
Posted By Jay1
I assumed a single round 4" diameter x 26" long...

I assumed a single round 4" diameter x 26" long port. Which is what I compared above.

It isn't that it's desirable to tune below the amps filter, it's just a way to cheat the port velocity with an...
Forum: DIY Speakers and Subs   12-16-2014, 03:00 PM
Replies: 8
Views: 228
Posted By Jay1
Your specs show a 4" x 26" port which would tune...

Your specs show a 4" x 26" port which would tune a 6 ft3 box to 14 hz . Your drawing shows a 2" x 12.5" slot, which if made 26" long would tune your box to 19.25 hz. The 4" port would take up 0.2...
Forum: DIY Speakers and Subs   12-04-2014, 07:02 AM
Replies: 6
Views: 181
Posted By Jay1
You would also have to figure out the best way to...

You would also have to figure out the best way to fit something like a 3" x 23.6" port inside a 1.275 ft3 box. That also means accounting for the port volume which will make your box slightly bigger....
Forum: DIY Speakers and Subs   12-03-2014, 05:39 PM
Replies: 33
Views: 600
Posted By Jay1
cough cough adjustable passive radiators cough...

cough cough adjustable passive radiators cough cough
Forum: DIY Speakers and Subs   11-29-2014, 11:48 PM
Replies: 4
Views: 318
Posted By Jay1
Yes that woofer does need a large vented box for...

Yes that woofer does need a large vented box for an "optimal" alignment. You can stuff it in a smaller box with acceptable results, it just wont look as pretty on paper. 6 ft3 with a 4" x 11" port...
Forum: DIY Speakers and Subs   11-24-2014, 06:14 PM
Replies: 30
Views: 1,114
Posted By Jay1
Not exactly hardwood but I used edge-glued pine...

Not exactly hardwood but I used edge-glued pine panels with ply-wood bracing on my Nova Forte's. It was super easy for a noob wood worker like me to make a nice (IMO) looking speaker. I did...
Forum: DIY Speakers and Subs   10-27-2014, 11:00 PM
Replies: 59
Views: 3,136
Posted By Jay1
I would try another measurement with the mic 1...

I would try another measurement with the mic 1 meter back from the speaker and directly level with the tweeter axis. That distance and position is likely not showing ideal results.

It would also...
Forum: DIY Speakers and Subs   09-28-2014, 09:09 PM
Replies: 20
Views: 745
Posted By Jay1
A pair of 3" diameter x 15" long ports would...

A pair of 3" diameter x 15" long ports would work. You could just use the precision port kits PE sales. Make sure you arent using the Yung amp with boost.
Forum: DIY Speakers and Subs   07-19-2014, 01:04 PM
Replies: 41
Views: 1,334
Posted By Jay1
It allows for a smaller box then a slot port, ...

It allows for a smaller box then a slot port, not necessarily better.
Forum: DIY Speakers and Subs   07-18-2014, 08:38 PM
Replies: 41
Views: 1,334
Posted By Jay1
I'm a little confused by the specs on that slot...

I'm a little confused by the specs on that slot port. What is the width 14.5? That would put the tuning point at 26.3 hz in a 3 ft3 box. If the port was 1" high you would get a 19 hz tune. Also that...
Forum: DIY Speakers and Subs   07-18-2014, 03:04 PM
Replies: 41
Views: 1,334
Posted By Jay1
Yes. But you can move that around if you want and...

Yes. But you can move that around if you want and it wont affect anything as in 16Hx18Wx20D is exactly the same thing. Having the smaller numbers for W x D gets you a smaller foot print of course.
Forum: DIY Speakers and Subs   07-18-2014, 01:56 PM
Replies: 41
Views: 1,334
Posted By Jay1
The 12" Infinity actually likes a larger box,...

The 12" Infinity actually likes a larger box, around 4 ft3 for HT sub duty. If you want a tiny 12" ported sub the RSS315HO is a good choice. 16" x 20" x 18" with a 4" x 32" port. The same applies as...
Forum: DIY Speakers and Subs   07-18-2014, 12:27 PM
Replies: 41
Views: 1,334
Posted By Jay1
16" W x 22" H x 22" D box out of 3/4" thick wood....

16" W x 22" H x 22" D box out of 3/4" thick wood. You would need a 4" port 36" long. You achieve that length buy using a 4" PVC elbow fitting and regular 4" PVC pipe for the port
...
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