RCF pro subwoofer - what kind of enclosure ? - diyAudio
Go Back   Home > Forums > Loudspeakers > Subwoofers

Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Reply
 
Thread Tools Search this Thread
Old 3rd December 2010, 02:26 PM   #1
Mordor is offline Mordor  Italy
diyAudio Member
 
Join Date: Jun 2004
Location: Venice
Default RCF pro subwoofer - what kind of enclosure ?

Hi, i have my old ( but new ) RCF L15P200AK ( im italiannnn ).
Is a 4ohm 15" pro woofer, whit 800 wrms ( but in my car was powered whit 1000 w rms reflex enclosure without problem ).
Now i want to make an enclosure for use in pubs or indoor ( i've a metal band ) or for home cinema use ( lol ).

im thinking about a 4th or 6th order box, but qts is 0.35: low for 4th and high for 6th. i havent try 4th or 6th order box on my project, but i must optimize linearity and efficiency..
Some ideas and knowledge about?
Sorry for my bad english

Some value:

Resonance frequency: 38 Hz
DC resistance: 5.9Ω
Mechanical factor: 6.8
Electrical factor: 0.38
Total factor: 0.35
BL Factor: 21.2 T m
Effective Moving Mass: 121 g
Equivalent Cas air load: 139 liters
Effettive piston area: 0.083 m
Max. linear excursion (mathematical): 9.8 mm
Voice - coil inductance @ 1kHz: 2.2 mH
Half-space efficiency: 1.93%
  Reply With Quote
Old 4th December 2010, 04:34 PM   #2
bjorno is offline bjorno  Sweden
diyAudio Member
 
Join Date: Mar 2005
Location: Jacobsmountain
Send a message via MSN to bjorno
Hi Mordor,

This driver of yours is IMO very good for both home or PA use as using a very favorable compression ratio:

This property makes it possible to lightly damp ~half of the airways for a TH that would move possible SQ into the HiFI area realm without loosing low end efficiency and sounding like an T_TQWT.

b
Attached Images
File Type: jpg RCF L15P200AK_TH_T-TQWT.JPG (494.1 KB, 241 views)
  Reply With Quote
Old 4th December 2010, 05:02 PM   #3
Mordor is offline Mordor  Italy
diyAudio Member
 
Join Date: Jun 2004
Location: Venice
Thank u so much... i will go with horn enclosure... Band pass is not good for eff?

Ive seen "cubo15" project.. is a small enclosure..

Last edited by Mordor; 4th December 2010 at 05:06 PM.
  Reply With Quote
Old 4th December 2010, 11:09 PM   #4
Xoc1 is offline Xoc1  United Kingdom
diyAudio Member
 
Xoc1's Avatar
 
Join Date: Nov 2008
Location: Devon UK
Hi Mordor
Have you read this thread
15" tapped horn with RCF
Your RCF driver is slightly less efficient when put into the sim but still looks OK.
__________________
My daughters music
http://soundcloud.com/zoey-phillips
  Reply With Quote
Old 5th December 2010, 06:49 PM   #5
diyAudio Member
 
Join Date: Jan 2005
Location: Rotterdam, NL
Hi,

The RCF L15P200AK will work in Cubo 15 and take 800 - 1000 Wrms mechanically (with a ~40 Hz high pass). Cubo 15 will work well with PA drivers intended for reflex use but you will have to find something else for HT use

Regards Johan
__________________
Impossibilities we do immediatly, miracles take slightly longer.
  Reply With Quote
Old 6th December 2010, 07:33 AM   #6
Mordor is offline Mordor  Italy
diyAudio Member
 
Join Date: Jun 2004
Location: Venice
Why? Linearity problems?
  Reply With Quote
Old 6th December 2010, 04:41 PM   #7
djk is offline djk
diyAudio Member
 
djk's Avatar
 
Join Date: Feb 2001
Location: USA
That driver would make a great home theater subwoofer in a tapped horn design.

Here is a design for a similar Electro-voice driver, it should be able to hit 130dB in the corner of your room, and is useable to 20hz.

Click the image to open in full size.
__________________
Candidates for the Darwin Award should not read this author.
  Reply With Quote
Old 7th December 2010, 06:40 PM   #8
diyAudio Member
 
Join Date: Jan 2005
Location: Rotterdam, NL
I meant Cubo 15 isn't suited for HT (it's meant for 40 Hz and up), however the driver is. I'll second djk, that the driver itself in a tapped horn could be used as a neet 20 -25 Hz and up sub (even in 2,0 pi).

Best regards Johan
__________________
Impossibilities we do immediatly, miracles take slightly longer.
  Reply With Quote

Reply


Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
enclosure dimension help for boston pro acoustic 6.5 milen007 Multi-Way 8 18th March 2009 02:14 PM
search 15 inch Pro subwoofer ? nickthevoice Subwoofers 42 17th April 2008 12:24 PM
horn-loaded PA subwoofer design for 1x RCF LF 18G401 Killer Subwoofers 5 3rd November 2005 11:26 PM
pro-subwoofer question trespasser_guy Subwoofers 5 1st March 2003 02:30 PM
Looking for a certain kind of enclosure HooRide Everything Else 0 7th November 2002 08:54 PM


New To Site? Need Help?

All times are GMT. The time now is 10:22 AM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright 1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2