file FSP-MAGICBOX

12 years 2 months ago #3723 by jake_fielder
Replied by jake_fielder on topic FSP-MAGICBOX
Would EQing the bottom end be allowed?

If i modified my design into a double iit could roughly be61cm x 122 x90 (24x 48x 35.5in) which is within sizetolerance.

with a quick modeling sesh i can get 105db(+/-1dB)@1w/1m from 50hz to 150Hz. Driver excursion is under 1mm @ 32Hz evenwith 1500w going through the driversso that can be EQ'd up a fair bit.



This is just a quick go, and i am using a rather weedy driver, maybe use a better driver and we could get it looking better....Edited by: Jake_Fielder

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12 years 2 months ago #3725 by deadbeat
Replied by deadbeat on topic FSP-MAGICBOX
Ideally, it would be flat from the start, but EQing would be fine I guess.

Could you post your hornresp inputs? I'm currently doing 'the mystery of the mini scoop' all over again, but would like to give a sim a try.
Edited by: Deadbeat

[url=\"http://users.ece.gatech.edu/~mleach/beraneklaw.html\"]Beranek\'s law[/url]
\'bits of ply round a driver\'

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12 years 2 months ago #3730 by jake_fielder
Replied by jake_fielder on topic FSP-MAGICBOX


Its a nice response, it just needs to be lower!

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12 years 2 months ago #3731 by strapping young stu
Replied by strapping young stu on topic FSP-MAGICBOX

Jake_Fielder wrote: Would EQing the bottom end be allowed?
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<div>If i modified my design into a double iit could roughly be 61cm x 122 x 90 (24x 48x 35.5in) which is within size tolerance.</div>
<div> </div>
<div>with a quick modeling sesh i can get 105db (+/-1dB) @ 1w/1m from 50hz to 150Hz. Driver excursion is under 1mm @ 32Hz so that can be EQ'd up a fair bit.</div>
<div> </div>
<div>

</div>
<div> </div>
<div>This is just a quick go, and i am using a rather weedy driver, maybe use a better driver and we could get it looking better....</div>


Try looking at a driver with a higher Qts and a lower BL, I think it wont choke the low end off quite as much as that one appears to be doing. Is this a 15"? Try Eminence 3015LF

Stu

Power = Versatility x Intelligence

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12 years 2 months ago #3733 by deadbeat
Replied by deadbeat on topic FSP-MAGICBOX
Jake's is a dual 18, but I'm concentrating on a dual 15. Thanks for the suggestion - the 3015 do seem to be quite a decent driver in more than a few cabs from what I've seen. I'll also be simming a large variety of other drivers...

[url=\"http://users.ece.gatech.edu/~mleach/beraneklaw.html\"]Beranek\'s law[/url]
\'bits of ply round a driver\'

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12 years 2 months ago #3734 by jake_fielder
Replied by jake_fielder on topic FSP-MAGICBOX
its an 18", does that change what you have advised?
its apaudio, its quite a cheap one as far as 18s go.
http://www.p-audio.co.uk/products/db_product_1_7_e18-600a.htm
Its the only think i have inputted into hornresp so far except v18-1000.

Do you have an 18" you could recomend?

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12 years 2 months ago #3735 by jake_fielder
Replied by jake_fielder on topic FSP-MAGICBOX

Deadbeat wrote: Jake's is a dual 18, but I'm concentrating on a dual 15. Thanks for the suggestion - the 3015 do seem to be quite a decent driver in more than a few cabs from what I've seen. I'll also be simming a large variety of other drivers...


Whyare you more interested in dual15" deadbeat?

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12 years 2 months ago #3736 by deadbeat
Replied by deadbeat on topic FSP-MAGICBOX
Because I don't have space for a dual 18[img]smileys/smiley19.gif

But before you say anything, I'm already going for a few enclosures with your parameters, and I think I'm going to get a winner of a driver soon hopefully...

Jake, try similar drivers to the 186 and FTR18-4080FD.

<strike>Oh, and is there a reason why you put in 2V instead of 2.83? </strike>Answered

Edited by: Deadbeat

[url=\"http://users.ece.gatech.edu/~mleach/beraneklaw.html\"]Beranek\'s law[/url]
\'bits of ply round a driver\'

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12 years 2 months ago #3739 by jake_fielder
Replied by jake_fielder on topic FSP-MAGICBOX
because with 2 drivers in parrallel (4r)1 watt is @ 2v.

To sim this as a double cab I have gone into the [tools] bit then clicked [multiple drivers] then said that theres 2 in parrallel. Also i doubled all the bits like throat, mouth, port diam, rear/front chamber.

EDIT: you probably know all that tho /\sorry!
EDIT: would you want an email ofthe plans of my cab? so you can see how i layed it out? Its just hand drawn on graph paper unfortunatly though Edited by: Jake_Fielder

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12 years 2 months ago #3740 by deadbeat
Replied by deadbeat on topic FSP-MAGICBOX
Whoops, always think this is 1 driver, too used to that[img]smileys/smiley9.gif

I'm getting a similar response with the PD 186, only with a large hump in the middle instead of a dip.

Will post pics soon

Edited by: Deadbeat

[url=\"http://users.ece.gatech.edu/~mleach/beraneklaw.html\"]Beranek\'s law[/url]
\'bits of ply round a driver\'

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