Plans for RCF dual 18" |
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djteknovibe
Registered User Joined: 06 May 2012 Status: Offline Points: 97 |
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Posted: 21 June 2016 at 7:16pm |
Does anyone have any plans or know how to design a decent front baffle reflex loaded enclosure? I'm wanting to make a decent enclosure design for two RCF LF18X451 loaded dual 18" bass reflex. I want the enclosure to be such that the drivers perform so ideally if possible they'll be about -3db down at about 35hz. Here's the driver i'm wanting to use :
http://www.rcf.it/en_US/products/precision-transducers/low-frequency-transducers/lf18x451 I'm absolutely useless at designing enclosures so I thought i'd ask you guys seeing as a lot of you guys design and build your own enclosures. |
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sn95
Registered User Joined: 10 March 2013 Location: USA Status: Offline Points: 351 |
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A 7ft /198l tune to 36 Hz deals the flattest response that I could get and will still take 1400 before hitting Xmax so 198l per driver .
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djteknovibe
Registered User Joined: 06 May 2012 Status: Offline Points: 97 |
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So a 198 litre enclosure tuned to 36hz would be ok, thanks, but how come the drivers would nly be able to take 1,400 watts each? They're rated at 1,800 watts rms continuous.
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sn95
Registered User Joined: 10 March 2013 Location: USA Status: Offline Points: 351 |
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At Xmax .you will need to add a little eq at 60 Hz .
Edited by sn95 - 22 June 2016 at 7:03pm |
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djteknovibe
Registered User Joined: 06 May 2012 Status: Offline Points: 97 |
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Add a little? Not take a few db off? Ok thanks, how accurate is the software you use anyway? Plus how would I go about getting the enclosures made? obviously i'd need to add internal volume because of bracing, drivers and stuff right?
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sn95
Registered User Joined: 10 March 2013 Location: USA Status: Offline Points: 351 |
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Add a little .I'm using WInisd pro .have you looked at the B&C 18tbx100 it looks good and a little smaller box and flatter response .
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djteknovibe
Registered User Joined: 06 May 2012 Status: Offline Points: 97 |
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I'd rather use the RCF LF18X451 as it'll overall give me 4-5db more spl output in a dual 18" box than using the B&C 18TBX100. I have no idea how I actually go from here to getting the enclosures for the RCF drivers designed and made. How would I go around that? I know what I want thr enclosures to look like, I want rectangular slot ports, a black duraflex style paintwork finish, steel powder coated grille that's flush with the front of the enclosure. I want speakons on the back, steel or very hard plastic handles.
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MarjanM
Old Croc Joined: 10 February 2005 Location: Macedonia Status: Offline Points: 7810 |
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How do you calculated that RCF will give you 4-5db more spl then tbx100?
They are more or less equal in sensitivity. 1200 to 1800W is aproximately 1.5db. You might have more difference at 40hz but not above.
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Marjan Milosevic
MM-Acoustics www.mm-acoustics.com https://www.facebook.com/pages/MM-Acoustics/608901282527713 |
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djteknovibe
Registered User Joined: 06 May 2012 Status: Offline Points: 97 |
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I meant to say 3-4db extra spl output and also because i'll be using two drivers in each enclosure and that adds up to about 3db extra spl output in total.
Edited by djteknovibe - 23 June 2016 at 1:30pm |
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Teunos
Old Croc Joined: 23 November 2008 Location: The Netherlands Status: Offline Points: 1799 |
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More power, more linear displacement and less power compression. Also, RCF has a higher BL/Re gives a stronger motor. I'd take the RCF any day of the week over the B&C.
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Best regards,
Teun. |
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djteknovibe
Registered User Joined: 06 May 2012 Status: Offline Points: 97 |
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How do I go about getting these enclosures made?
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DMorison
Old Croc Joined: 14 March 2007 Location: Aberdeen Status: Offline Points: 1647 |
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If you can't design and build it yourself, you'll need to pay someone to do it for you. Maybe post in the Wanted fourm?
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