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post #3751 of 3775 Unread 09-01-2015, 09:48 AM - Thread Starter
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Quote:
Originally Posted by coolrda View Post
Anyway, if you what to give me your Full Marty, with the details mentioned above Derrick, I'll run them.
Can you run a sim of the full marty? I'll add to the calculator.

Interesting to see how much savings you can achieve from diy ported vs some of the popular ID brands...similar performance to boot!
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post #3752 of 3775 Unread 09-01-2015, 04:03 PM
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Quote:
Originally Posted by dominguez1 View Post
Can you run a sim of the full marty? I'll add to the calculator.

Interesting to see how much savings you can achieve from diy ported vs some of the popular ID brands...similar performance to boot!
Here's the Full Marty using Derrick's specs. Red is not filtered. Blue is a typical 2nd order HPF. 12db/oct@16hz. When you compare it to max spl graph below you'll see that MAX SPL offers a slight db gain compared to the filtered one. The filtered one may be the more appropriate number to use, then again us DIYer's run on the ragged edge at times.



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post #3753 of 3775 Unread 09-01-2015, 04:14 PM
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I forgot to mention WinISD uses 1M instead of 2M for distance so adjust accordingly.
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post #3754 of 3775 Unread 09-01-2015, 08:03 PM
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Quote:
Originally Posted by coolrda View Post
I forgot to mention WinISD uses 1M instead of 2M for distance so adjust accordingly.
Thanks for doing the sim. I have tested the full Marty and Mini with the vented partially stuffed as mentioned. The subs behave well demo'ing WOW, OHF, Tron Legacy, and a few more. I have not touched Edge of Tomorrow and will use extreme caution on that one, lol.
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post #3755 of 3775 Unread Yesterday, 07:48 AM
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Quote:
Originally Posted by dominguez1 View Post
Can you run a sim of the full marty? I'll add to the calculator.

Interesting to see how much savings you can achieve from diy ported vs some of the popular ID brands...similar performance to boot!
I probably should sim these Marty's against the reference's sim for accuracy instead of against DB's numbers. Whatcha think?
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post #3756 of 3775 Unread Yesterday, 08:43 AM - Thread Starter
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Quote:
Originally Posted by coolrda View Post
I probably should sim these Marty's against the reference's sim for accuracy instead of against DB's numbers. Whatcha think?
Isn't that what you did with the first marty sims? If not, yes it should be a sim compared to the sim si, and then I take the delta between the two for my estimate.
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post #3757 of 3775 Unread Yesterday, 09:52 AM
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Quote:
Originally Posted by dominguez1 View Post
Isn't that what you did with the first marty sims? If not, yes it should be a sim compared to the sim si, and then I take the delta between the two for my estimate.
Ok, sounds good. I say go with max spl then.
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post #3758 of 3775 Unread Yesterday, 10:06 AM
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Yamaha RX-A2030 and 4 Yamaha P2500s amps.
speakers- 9 Behringer B215XL's
subs- SI 18ht x12 IB powered by Sanway FP14K.

Last edited by MKtheater; Yesterday at 10:14 AM.
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post #3759 of 3775 Unread Yesterday, 11:09 AM
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Here is my updated score:
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post #3760 of 3775 Unread Yesterday, 11:30 AM
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Plugging 25% of the vent on the Mini and full Marty has yielded excellent results after watching a couple of movies at reference. Not using the hpf preserves some of the extension. Careful DSP/PEQ was done to prevent damaging a driver or bottoming out any of the subs. In general a hpf should be used with vented subs.


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post #3761 of 3775 Unread Yesterday, 11:46 AM
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Quote:
Originally Posted by ahmedreda View Post
Here is my updated score:
I see you have a rather potent combo of Crowson TT's/nearfieldsubs. Any chance we could talk you into posting your VS data as well?
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post #3762 of 3775 Unread Yesterday, 11:56 AM
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Originally Posted by MKtheater View Post
Sup, MK. Can you post max spl? Just to add I always wipe all params preloaded into WinISD then reload params from DataBass only. Yours pretty much matches mine. Yours shows a qtc of .67 which seem s low for a 4.2cu box. I think with a qtcof .707 it shows 4.6 and change on mine. Just wondering.
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post #3763 of 3775 Unread Yesterday, 01:44 PM
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Yeah, that was a 4.2 cubic foot box and the .707 box is smaller. The difference is small considering ULF. These are max spl numbers without filters, the SI sealed will hit 5 hz reaching x-max and the marty will hit 16hz and a little higher in frequency(20hz) at x-max with those sims. This was my old ultimax parameters but changed the x-max to 28mm. Did Ricci post the winisd file?

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speakers- 9 Behringer B215XL's
subs- SI 18ht x12 IB powered by Sanway FP14K.
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post #3764 of 3775 Unread Yesterday, 02:07 PM
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Quote:
Originally Posted by MKtheater View Post
Yeah, that was a 4.2 cubic foot box and the .707 box is smaller. The difference is small considering ULF. These are max spl numbers without filters, the SI sealed will hit 5 hz reaching x-max and the marty will hit 16hz and a little higher in frequency(20hz) at x-max with those sims. This was my old ultimax parameters but changed the x-max to 28mm. Did Ricci post the winisd file?
Here's the Parameters and I'll get you the paper on order to input them shortly.
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post #3765 of 3775 Unread Yesterday, 02:19 PM
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I took this from home theater shack, if I remember correctly, a while back. After following this its been easy to grab params from database and build my own winds database and with no clutter from drivers I'll never use.

WiniSD Tutorial:

Ensure that 'Auto calculate unknowns' is on even if you have all the data. This is recommended because WinISD Pro can be very picky about the data and if it is even 1/1000th off it will reject the data so it is just easier to let it do the work. You might notice some small differences in the values from the calculated and the provided, but very rarely are these large enough to substantially effect modeling.

This is the recommended method for entering driver parameters [if at any point you need to change the unit of a parameter simply click on the displayed unit and it will change]:
1. Enter Mms and Cms which results in Fs being calculated. If Mmm and Cms are not known enter Fs. If Fs and Mmm or Cms are known enter Fs and the other known value.
2. Enter Sd, Bl and Re. This will result in more auto calculations being made, but Qms and Qts will be blank. If Re is not available, go ahead and enter Sd and Bl.
3. Enter either Qms or Rms, whichever is available, generally Qms is available.
4. If Mms and/or Cms were not provided for input, now input Qes. This will cause some other fields to auto calculate.
5. Enter Hc, Hg and Pe if available. These are not required, however Pe (RMS Power Rating) will give a good idea of how much power signal input to model with.
6. Enter the number of voice coils. NOTE: Drivers using dual voice coils may cause the Bl and Re parameters to change when changing the connection wiring from parallel to series. Be sure to monitor these when changing the connection option, but WinISD should automatically change these values properly.
7.Correct Znom (nominal impedance) if needed. Many times this will change to 6 and should be 2 or 4... or the ultimate resistance (in ohms) you intend to run based on the voice coil configuration and your connection setting (parallel or series).
8.Enter Xmax and any other missing parameters if known and continue. DO NOT change any of the blue auto calculations. If they are only slightly different, this is okay. If they are off significantly, contact the manufacturer or vendor of the driver.
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post #3766 of 3775 Unread Yesterday, 03:23 PM
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I just imported the file and changed the x-max to 28mm rather than 22.

Yamaha RX-A2030 and 4 Yamaha P2500s amps.
speakers- 9 Behringer B215XL's
subs- SI 18ht x12 IB powered by Sanway FP14K.
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post #3767 of 3775 Unread Yesterday, 07:35 PM - Thread Starter
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Quote:
Originally Posted by ahmedreda View Post
Here is my updated score:
Impressive! Love that you picked up a 4th FV...your TF FX are crazy as well. This is one room I'd like to experience! SQ has to be fantastic.

2nd the notion on vibsensor...help a brutha out?
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post #3768 of 3775 Unread Yesterday, 07:36 PM - Thread Starter
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Thanks for the Sims guys...but which one do I use to add to the calc?
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post #3769 of 3775 Unread Today, 06:36 AM
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Sure I will try to post it over the weekend. Should I try it once with the transducers and once without? Any particular volume or just as high as I can?

Quote:
Originally Posted by coolrda View Post
I see you have a rather potent combo of Crowson TT's/nearfieldsubs. Any chance we could talk you into posting your VS data as well?
Quote:
Originally Posted by dominguez1 View Post
Impressive! Love that you picked up a 4th FV...your TF FX are crazy as well. This is one room I'd like to experience! SQ has to be fantastic.

2nd the notion on vibsensor...help a brutha out?
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post #3770 of 3775 Unread Today, 07:39 AM
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Sure I will try to post it over the weekend. Should I try it once with the transducers and once without? Any particular volume or just as high as I can?
Yes. With transducer a alone, subs alone, then both together. Measured it at a level you'd normally watch a movie first, say -10 or -15db. Then take another one max'd out as far as you wanna push it. The more details the better. Thanks.
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post #3771 of 3775 Unread Today, 07:50 AM
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This is comparing the same sim as my older ones. The SI can reach 5hz though and if I wanted to play it at the same frequency as ported you can HP it and turn it up a bit to come closer.

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post #3772 of 3775 Unread Today, 07:50 AM - Thread Starter
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It would also be great to see the difference between buttkicker and crowsons!
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post #3773 of 3775 Unread Today, 07:50 AM - Thread Starter
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@coolrda , can you link to your test signal?
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post #3774 of 3775 Unread Today, 07:51 AM
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Quote:
Originally Posted by dominguez1 View Post
Thanks for the Sims guys...but which one do I use to add to the calc?
I'll check xmax and get back to you.
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post #3775 of 3775 Unread Today, 11:26 AM
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Originally Posted by dominguez1 View Post
@coolrda , can you link to your test signal?
I thought I posted the Dropbox with User/Password here but I can't find the post. The posts at the bottom if page 123 mention it. When I find it I'll post it.
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