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Forum: Subwoofers, Bass, and Transducers   10-22-2014, 05:32 AM
Replies: 2,650
Views: 83,605
Posted By dominguez1
Wow...you may have a great discovery here if...

Wow...you may have a great discovery here if these can dig that low!

While your up for experimenting...calibrate your device as described in the below post.

here...
Forum: Subwoofers, Bass, and Transducers   10-21-2014, 07:31 PM
Replies: 61
Views: 940
Posted By dominguez1
Yes, talking about duals vs single in most rooms....

Yes, talking about duals vs single in most rooms. Not saying single FV15HP is more accurate than single os...although some would debate because of servo, I am not. :)
Forum: Subwoofers, Bass, and Transducers   10-21-2014, 06:52 PM
Replies: 2,650
Views: 83,605
Posted By dominguez1
Are these the ones you have? ...

Are these the ones you have?

http://www.parts-express.com/aurasound-ast-2b-4-pro-bass-shaker-tactile-transducer--299-028

Also, do you have any android device? You can use the Vibration Meter...
Forum: Subwoofers, Bass, and Transducers   10-21-2014, 06:16 PM
Replies: 61
Views: 940
Posted By dominguez1
Archaea brings up a good point...2 FV15HPs vs 1...

Archaea brings up a good point...2 FV15HPs vs 1 OS in demo land...OS wins hands down. Demo land is akin to the honda hatchback scenario...clean, sheer SPL wins the day!

If you're looking for...
Forum: Subwoofers, Bass, and Transducers   10-21-2014, 04:10 PM
Replies: 61
Views: 940
Posted By dominguez1
Not me. If I never had the ability to upgrade...

Not me. If I never had the ability to upgrade again, I'd take dual FV15HPs over the OS. In my room, both could hit reference and above, and I weight a flat response priority over massive SPL for my...
Forum: Subwoofers, Bass, and Transducers   10-21-2014, 03:35 PM
Replies: 2,650
Views: 83,605
Posted By dominguez1
http://www.avsforum.com/forum/attachment.php?attac...

http://www.avsforum.com/forum/attachment.php?attachmentid=323473&stc=1&d=1413930519

Here's what I estimated for the OS LFU.

6db up from the S2 at 20hz.

Below that, it's an S1 with an 18db...
Forum: Subwoofers, Bass, and Transducers   10-20-2014, 04:58 PM
Replies: 2,650
Views: 83,605
Posted By dominguez1
I've taken another shot at re-estimating the JTR...

I've taken another shot at re-estimating the JTR line...does this look to be in the ballpark?

I basically used the Cap S1 (based on a UXL estimate: probably optimistic here) and increased the db...
Forum: Subwoofers, Bass, and Transducers   10-20-2014, 04:49 PM
Replies: 2,650
Views: 83,605
Posted By dominguez1
derrickdj1, is the below what you have? If so,...

derrickdj1, is the below what you have? If so, these are the one that I believe aren't ULF capable.

http://www.parts-express.com/aurasound-ast-2b-4-pro-bass-shaker-tactile-transducer--299-028
Forum: Subwoofers, Bass, and Transducers   10-19-2014, 02:00 PM
Replies: 2,650
Views: 83,605
Posted By dominguez1
V17.4 of the ULF Calculator...

V17.4 of the ULF Calculator (http://www.avsforum.com/forum/attachment.php?attachmentid=320154&d=1413753443) now available. Post 1 and 2 updated.



5hz ULF Card Template now available (manually...
Forum: Subwoofers, Bass, and Transducers   10-18-2014, 06:34 PM
Replies: 18,569
Views: 1,167,536
Posted By dominguez1
I watched dofp last night, and thought the bass...

I watched dofp last night, and thought the bass was excellent! I didnt find it lacking at all like others had...I can potentially see how it could have used more punch, but thought the ulf was done...
Forum: Subwoofers, Bass, and Transducers   10-18-2014, 12:36 PM
Replies: 2,650
Views: 83,605
Posted By dominguez1
Those aura's likely won't do anything in the ULF...

Those aura's likely won't do anything in the ULF frequencies. I think their good to 25-30hz or so...

Prove me wrong though...when you get them, run some sweeps and see what you get. I have Clark...
Forum: Subwoofers, Bass, and Transducers   10-18-2014, 08:33 AM
Replies: 2,650
Views: 83,605
Posted By dominguez1
Okay MK, here's what I have for you: ...

Okay MK, here's what I have for you:

http://www.avsforum.com/forum/attachment.php?attachmentid=317986&stc=1&d=1413645943

If you ported your nearfield subs...they would be at 10-11hz tune?

I...
Forum: Subwoofers, Bass, and Transducers   10-18-2014, 08:22 AM
Replies: 2,650
Views: 83,605
Posted By dominguez1
Nice! What kind of transducers?

Nice! What kind of transducers?
Forum: Subwoofers, Bass, and Transducers   10-16-2014, 05:15 PM
Replies: 3
Views: 158
Posted By dominguez1
Also depends on what your subfloors's resonant...

Also depends on what your subfloors's resonant frequency is.

Check out the ulf thread to figure that out...
Forum: Subwoofers, Bass, and Transducers   10-15-2014, 02:02 PM
Replies: 2,650
Views: 83,605
Posted By dominguez1
I care. :) Can you post your excursion plot...

I care. :)

Can you post your excursion plot as well?
Forum: Subwoofers, Bass, and Transducers   10-14-2014, 10:59 AM
Replies: 2,650
Views: 83,605
Posted By dominguez1
Yes, I agree with this. Didn't realize your box...

Yes, I agree with this. Didn't realize your box increased the si by 1db. 83 should be the number at 5hz as you mentioned.

I will recalculate when I get back, but I think 44 to 50 is going to be...
Forum: Subwoofers, Bass, and Transducers   10-13-2014, 05:09 PM
Replies: 8
Views: 378
Posted By dominguez1
I had this same problem with the a7s and it...

I had this same problem with the a7s and it turned out to be the driver. Does the amp still show a green light when powered on? If so, it's likely the driver. You can take out the driver and make...
Forum: Subwoofers, Bass, and Transducers   10-13-2014, 04:50 PM
Replies: 2,650
Views: 83,605
Posted By dominguez1
http://www.avsforum.com/forum/attachment.php?attac...

http://www.avsforum.com/forum/attachment.php?attachmentid=298786&d=1412691162
On your sim above, 5hz shows a little more than 96db. Subtract 12 to get to 1 SI. This puts it at 84db and change.
...
Forum: Subwoofers, Bass, and Transducers   10-13-2014, 12:20 PM
Replies: 2,650
Views: 83,605
Posted By dominguez1
Actually, that is how all the estimates in the...

Actually, that is how all the estimates in the chart that use sims are done. You've been providing the sim, and I've been calculating the difference and adding to the actual data of the si. Not...
Forum: Subwoofers, Bass, and Transducers   10-13-2014, 11:24 AM
Replies: 2,650
Views: 83,605
Posted By dominguez1
I agree with your numbers from a sim perspective,...

I agree with your numbers from a sim perspective, but you have to normalize them for the actual results of riccis yest for the si.

Ricci measured 89.2db at 10hz for the si. The difference between...
Forum: Subwoofers, Bass, and Transducers   10-13-2014, 09:52 AM
Replies: 2,650
Views: 83,605
Posted By dominguez1
Your ULF score is the same as your 10hz score...

Your ULF score is the same as your 10hz score since you are all sealed. If you look at the member list on post 2, you'll see who has 5 hz scores (you are on there). In the next update, I'll have the...
Forum: Subwoofers, Bass, and Transducers   10-13-2014, 08:11 AM
Replies: 2,650
Views: 83,605
Posted By dominguez1
http://www.avsforum.com/forum/attachment.php?attac...

http://www.avsforum.com/forum/attachment.php?attachmentid=298786&d=1412691162

At 20hz your 4 si show 116db. Subtract 12, and you get 104db. Your ported shows 124db at 20hz. That's where I get the...
Forum: Subwoofers, Bass, and Transducers   10-13-2014, 07:00 AM
Replies: 2,650
Views: 83,605
Posted By dominguez1
No worries about 5 and 5.4hz. Close enough for...

No worries about 5 and 5.4hz. Close enough for these purposes.

As far as your score, here's how I got there:

Looking at your sim you posted, I subtracted 12db from your back row sims to get...
Forum: Subwoofers, Bass, and Transducers   10-11-2014, 07:46 PM
Replies: 2,650
Views: 83,605
Posted By dominguez1
Figured it out...see above for new scores. ...

Figured it out...see above for new scores.

Look right?
Forum: Subwoofers, Bass, and Transducers   10-11-2014, 05:59 PM
Replies: 2,650
Views: 83,605
Posted By dominguez1
You're right, should be 12 instead of 16. But...

You're right, should be 12 instead of 16. But that won't change the score because only 12 was in the calculation.

Hmmm, is this sim at 1m or 2m?
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