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Forum: DIY Speakers and Subs   07-09-2014, 08:01 PM
Replies: 19
Views: 392
Posted By Ricci
Good points have been made by diyspeaker guy....

Good points have been made by diyspeaker guy. This is most likely a combo of the horn built being slightly different than the simulation for the reasons mentioned. I'm not familiar with this...
Forum: Subwoofers, Bass, and Transducers   06-23-2014, 11:32 AM
Replies: 102
Views: 4,635
Posted By Ricci
I don't ever think you will be able to...

I don't ever think you will be able to consistently get any better results than +/-1dB. It may be 40deg with low humidity one day with measurements conducted while the DUT is cold and another could...
Forum: DIY Speakers and Subs   06-10-2014, 12:27 PM
Replies: 25
Views: 596
Posted By Ricci
John I guarantee the impedance min was well over...

John I guarantee the impedance min was well over 8ohms by that point! Lots of heat.

Also I think you are mixing discussions. The OP wants reasonable deep bass output from a small box not chest...
Forum: DIY Speakers and Subs   06-06-2014, 09:59 AM
Replies: 25
Views: 596
Posted By Ricci
LowerFE yes a larger box increases deep bass...

LowerFE yes a larger box increases deep bass sensitivity and efficiency and also lowers distortion. It will not change the maximum excursion limited output though provided you have enough amp to get...
Forum: DIY Speakers and Subs   06-06-2014, 09:52 AM
Replies: 194
Views: 7,163
Posted By Ricci
Excellent finishing work. Bravo.

Excellent finishing work. Bravo.
Forum: DIY Speakers and Subs   06-06-2014, 09:50 AM
Replies: 55
Views: 1,354
Posted By Ricci
Over the past few years I've come to much the...

Over the past few years I've come to much the same viewpoint as Dave. Intuitively it just makes sense to me. As the wavelengths get longer the reflected energy from boundaries and objects has a...
Forum: DIY Speakers and Subs   06-05-2014, 06:33 AM
Replies: 25
Views: 596
Posted By Ricci
Correct. Also the 9515 MTX is a beast of a...

Correct.

Also the 9515 MTX is a beast of a driver with a huge motor, aluminum shorting rings and a 4" voice coil. Look at the amount of power (voltages are listed) dumped into it to make the...
Forum: Subwoofers, Bass, and Transducers   06-01-2014, 06:03 PM
Replies: 12,740
Views: 466,398
Posted By Ricci
Quote:Originally Posted by Tom...

Quote:Originally Posted by Tom Vodhanel http://www.avsforum.com/img/forum/go_quote.gif (http://www.avsforum.com/t/1372020/official-power-sound-audio-thread/11910#post_24782737)


I spent *years*...
Forum: Subwoofers, Bass, and Transducers   05-21-2014, 08:11 AM
Replies: 23
Views: 1,385
Posted By Ricci
Gotta agree with Bill on that one. The TH50 is...

Gotta agree with Bill on that one. The TH50 is awesome. I've heard it up close and personal but that driver is flapping in the breeze below the cabinet loading. Might have good output to 16 or so...
Forum: DIY Speakers and Subs   05-21-2014, 04:42 AM
Replies: 24
Views: 906
Posted By Ricci
Well looky who came up for air. Haven't seen you...

Well looky who came up for air. Haven't seen you around in a long time.
Forum: DIY Speakers and Subs   05-17-2014, 10:34 AM
Replies: 25
Views: 402
Posted By Ricci
They come up on Car Audio Classifieds every one...

They come up on Car Audio Classifieds every one in a while if you haven't looked there.
Forum: DIY Speakers and Subs   05-09-2014, 06:24 AM
Replies: 43
Views: 1,566
Posted By Ricci
Great looking builds. Thanks for sharing.

Great looking builds. Thanks for sharing.
Forum: DIY Speakers and Subs   04-19-2014, 01:02 PM
Replies: 42
Views: 1,606
Posted By Ricci
Keep me in the loop please.

Keep me in the loop please.
Forum: DIY Speakers and Subs   04-11-2014, 08:49 AM
Replies: 723
Views: 21,697
Posted By Ricci
I haven't seen this mysterious top end roll off...

I haven't seen this mysterious top end roll off with REW either. Make sure that your windowing and measurements signals are comparable between programs.

Quote:Originally Posted by...
Forum: DIY Speakers and Subs   04-08-2014, 06:43 AM
Replies: 723
Views: 21,697
Posted By Ricci
Man...I'm really regretting missing out on this...

Man...I'm really regretting missing out on this one. Stupid schedule!
Forum: DIY Speakers and Subs   04-08-2014, 06:15 AM
Replies: 10
Views: 2,717
Posted By Ricci
Build a 10" powerport into the base. 20-25 cu ft...

Build a 10" powerport into the base. 20-25 cu ft per driver. Go no less than a flared 8" port on each driver.
Forum: DIY Speakers and Subs   03-13-2014, 06:08 PM
Replies: 511
Views: 19,074
Posted By Ricci
Quote:Originally Posted by...

Quote:Originally Posted by notnyt http://www.avsforum.com/img/forum/go_quote.gif (http://www.avsforum.com/t/1516234/8x-18-lms-5400-ultras-sealed-to-27-cube-15hz-ported-build/300#post_24473045)

I...
Forum: DIY Speakers and Subs   03-12-2014, 07:56 AM
Replies: 511
Views: 19,074
Posted By Ricci
Good stuff Not. I would disregard the stuff...

Good stuff Not.

I would disregard the stuff below 10Hz on these graphs. With a 24dB octave roll off below tune combined with 18dB octave 13Hz high pass it doesn't really jive with that the graphs...
Forum: DIY Speakers and Subs   03-12-2014, 06:51 AM
Replies: 36
Views: 1,307
Posted By Ricci
The TD 18 is a soft bottom. Surround, spider and...

The TD 18 is a soft bottom. Surround, spider and BL limited. Hard bottom is past 40mm I was told. It will never get there. 30mm peak to peak is no problem.
Forum: DIY Speakers and Subs   03-10-2014, 08:39 AM
Replies: 361
Views: 11,624
Posted By Ricci
Quote:Originally Posted by...

Quote:Originally Posted by paskal9 http://www.avsforum.com/img/forum/go_quote.gif (http://www.avsforum.com/t/1521257/who-wants-to-see-the-inuke12000dsp-tested/60#post_24462029)

it doesn't say how...
Forum: DIY Speakers and Subs   03-08-2014, 04:55 PM
Replies: 69
Views: 1,982
Posted By Ricci
You should compare the base response graphs if...

You should compare the base response graphs if looking at the low bass range not the full range measurements as they lose some resolution in the deep stuff due to a larger frequency range and...
Forum: DIY Speakers and Subs   03-07-2014, 09:02 AM
Replies: 361
Views: 11,624
Posted By Ricci
I have thought about getting into testing...

I have thought about getting into testing amplifiers and acquiring the equipment and knowledge but I can't even keep up with the bass thing. I would be more than happy to make a section at DB to...
Forum: DIY Speakers and Subs   03-07-2014, 07:35 AM
Replies: 13
Views: 481
Posted By Ricci
The hottest I ever got a driver was one of my...

The hottest I ever got a driver was one of my older 5400's during testing the GH. It was summer to begin with and about 95 or so...The cab is black duratex coated and had been outside for hours...
Forum: Subwoofers, Bass, and Transducers   03-07-2014, 06:34 AM
Replies: 121
Views: 2,454
Posted By Ricci
When you decrease the airspace that a driver has...

When you decrease the airspace that a driver has to operate in the distortion in the deep bass goes up and the deep bass sensitivity goes down. More power is required which causes a few things to...
Forum: DIY Speakers and Subs   02-28-2014, 11:31 AM
Replies: 84
Views: 2,502
Posted By Ricci
John and Noah what I am saying is that the ref...

John and Noah what I am saying is that the ref efficiency of a driver is only applicable at small signal inputs typically and that it can quickly go out the window when the rubber meets the road. A...
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