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Forum: DIY Speakers and Subs   12-09-2014, 02:18 AM
Replies: 55
Views: 903
Posted By splotten
Its weird its so disappointing, but I tend to...

Its weird its so disappointing, but I tend to agree the knocking sound is related to too much power. The UM15 has a lot more excursion than a HT18 or a UM18 would have had, at the same power. It...
Forum: DIY Speakers and Subs   12-08-2014, 07:21 PM
Replies: 30
Views: 556
Posted By splotten
Sounds great ! :-) The mic is SPL rated at...

Sounds great ! :-)

The mic is SPL rated at 1 kHz. Not 20 or 50 Hz. At 1 kHz the diaphragm only has to move a little compared to the bass. I'm sure that is the reason.
Forum: DIY Speakers and Subs   12-08-2014, 12:55 AM
Replies: 55
Views: 903
Posted By splotten
Unless the UM15 is broken or there is something...

Unless the UM15 is broken or there is something else wrong with the sub you build, it really sounds unlikely a $200 12" sub should be able to compete. Not sure whats going on here, but I just...
Forum: DIY Speakers and Subs   12-06-2014, 04:41 PM
Replies: 2
Views: 97
Posted By splotten
I can. ...

I can.

http://www.avsforum.com/forum/155-diy-speakers-subs/1384876-diy-equivalent-jtr-cap-sub.html
(http://www.avsforum.com/forum/155-diy-speakers-subs/1384876-diy-equivalent-jtr-cap-sub.html)
Forum: DIY Speakers and Subs   12-05-2014, 06:14 AM
Replies: 10
Views: 283
Posted By splotten
That is tue. However the Inuke limits on Vpeak,...

That is tue. However the Inuke limits on Vpeak, not Vrms, so you need to divide the voltage entered in the DSP by sqrt(2) to make sense of the calculated power in the inuke DSP.

If for instance...
Forum: DIY Speakers and Subs   12-05-2014, 05:31 AM
Replies: 13
Views: 438
Posted By splotten
How about rebuilding the TC into a ported sub and...

How about rebuilding the TC into a ported sub and power it with the crown. Thats a cost effective way to get more SPL and wet your feet before comitting to at big DIY build. If you can digg up the...
Forum: DIY Speakers and Subs   12-02-2014, 05:49 AM
Replies: 9
Views: 243
Posted By splotten
Yeah. I dont have that amp, so I cant say...

Yeah. I dont have that amp, so I cant say anything for certain, but are you positive the settings are saved and active in the Inuke DSP? Maybe you could verify by loading, say, a 200Hz high pass...
Forum: DIY Speakers and Subs   11-02-2014, 01:28 AM
Replies: 250
Views: 15,106
Posted By splotten
Based on what I have read around here I speculate...

Based on what I have read around here I speculate it might be more accurate to say they are in the same -voltage- range. Meaning, if you are not driving difficult loads the benefit of the Peavey 7500...
Forum: DIY Speakers and Subs   10-30-2014, 10:14 PM
Replies: 776
Views: 37,168
Posted By splotten
Im not going into a big debate here, but I think...

Im not going into a big debate here, but I think the needed verses possible port sizes should be considered in relation to total box volume. Sometimes the bigger box is simply needed in order to get...
Forum: DIY Speakers and Subs   10-30-2014, 01:54 PM
Replies: 208
Views: 13,620
Posted By splotten
Thanks. Ill remember that. Might come in useful...

Thanks. Ill remember that. Might come in useful if the room gets too "dead" when putting in a lot of absorption.
Forum: DIY Speakers and Subs   10-30-2014, 11:02 AM
Replies: 208
Views: 13,620
Posted By splotten
Does it make any significant difference if you...

Does it make any significant difference if you leave the plastic on the rockwool or remove it. Most people on the forums usually recommend wrapping absorber panels with air permeable fabric. You seem...
Forum: DIY Speakers and Subs   10-27-2014, 02:41 AM
Replies: 512
Views: 23,533
Posted By splotten
If you sim the cone excursion you will see that...

If you sim the cone excursion you will see that the appropriate setting of the HP filter is dependent on the steepness of the filter. Typically you would set a 2. order BW filter at the same...
Forum: DIY Speakers and Subs   10-17-2014, 02:45 PM
Replies: 24
Views: 774
Posted By splotten
There is a new Troels Gravesen 3W with a W22 on...

There is a new Troels Gravesen 3W with a W22 on his site. Unfortunately he doesent disclose the filter values as it is a "closed kit".

http://www.troelsgravesen.dk/ScanSpeak-3W-Discovery.htm
Forum: DIY Speakers and Subs   10-17-2014, 02:25 PM
Replies: 24
Views: 774
Posted By splotten
Im not sure its the exact model that procella...

Im not sure its the exact model that procella uses. I came across a picture of the woofer in P8 and the magnet looked bigger than on the retail model. You can try and model it and i think you will...
Forum: DIY Speakers and Subs   10-16-2014, 03:08 PM
Replies: 305
Views: 8,486
Posted By splotten
Maybe you could try the room simulator in REW if...

Maybe you could try the room simulator in REW if your room is rectangular. Possibly it could give you some ideas for what to try. Ported 18" subs are much lighter in REW than IRL.
Forum: DIY Speakers and Subs   10-16-2014, 02:39 PM
Replies: 305
Views: 8,486
Posted By splotten
Right. I really dont have much to offer as i have...

Right. I really dont have much to offer as i have never tried with that many subs. There is so many combinations of placement, EQ and time alignment that its simply mind boggling. Are there no multi...
Forum: DIY Speakers and Subs   10-16-2014, 01:51 PM
Replies: 305
Views: 8,486
Posted By splotten
Do you have sweeps of each individual sub? I'm...

Do you have sweeps of each individual sub? I'm betting its a nightmare figuring out whats going on with that many subs going all at once.
Forum: DIY Speakers and Subs   10-16-2014, 07:33 AM
Replies: 62
Views: 1,411
Posted By splotten
What is the benefit of EQing the smaller box in...

What is the benefit of EQing the smaller box in this situation? The model of the sealed box is already at Xmax so the only thing you can do is EQ the upper bass down. Also the sealed box will not get...
Forum: DIY Speakers and Subs   10-16-2014, 02:00 AM
Replies: 62
Views: 1,411
Posted By splotten
That was not what i meant. For the amplifier to...

That was not what i meant. For the amplifier to produce full power it needs to receive a full signal. If you configured you system within reason then that is not very likely to happen unless you turn...
Forum: DIY Speakers and Subs   10-16-2014, 01:29 AM
Replies: 62
Views: 1,411
Posted By splotten
I dont think that is entirely true. Try and think...

I dont think that is entirely true. Try and think of it this way. If the speaker still gets full power/voltage no matter what filtering you use then how can a high pass filter possibly protect the...
Forum: DIY Speakers and Subs   10-16-2014, 12:31 AM
Replies: 62
Views: 1,411
Posted By splotten
You didn't do anything wrong, as far as i can...

You didn't do anything wrong, as far as i can see. I get the same thing. As LTD said you can boost some and recover the 3db you loose at the high pass filter frequency. ( The BW, n=2 high pass filter...
Forum: DIY Speakers and Subs   10-15-2014, 01:07 PM
Replies: 827
Views: 33,501
Posted By splotten
Yeah. Just press play. No need to reinvent the...

Yeah. Just press play. No need to reinvent the wheel :-)
Forum: DIY Speakers and Subs   10-15-2014, 01:02 PM
Replies: 827
Views: 33,501
Posted By splotten
Im not familiar with mediabrowser 3 but i have...

Im not familiar with mediabrowser 3 but i have tried and failed setting up MadVR in other players that was supposedly compatible. That, to me, is one of the cool things about Jriver, MadVR worked...
Forum: DIY Speakers and Subs   10-15-2014, 12:49 PM
Replies: 827
Views: 33,501
Posted By splotten
I disagree about Jriver. IMO it is an easy way to...

I disagree about Jriver. IMO it is an easy way to achieve -outstanding- video PQ with MadVR built right in. Just enable it, set a few easy (IMO) settings and make sure your PC has the horse power to...
Forum: DIY Speakers and Subs   10-12-2014, 07:13 PM
Replies: 26
Views: 1,136
Posted By splotten
I dont have any special recommendations, but id...

I dont have any special recommendations, but id say that you should be able to squeeze a 15" in there if you can spare a few more inches on the hight. I believe a Dayton RSS390HO-4 should fit in...
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