Plans for Cerwin Vega B36 |
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_djk_
Old Croc Joined: 23 November 2004 Location: United States Status: Offline Points: 6002 |
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Edited by _djk_ - 21 October 2005 at 6:16am |
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djk
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_djk_
Old Croc Joined: 23 November 2004 Location: United States Status: Offline Points: 6002 |
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The early Earthquake units used the 189 class woofer, many varients exist, JE, ES, SC, etc ( wonder what the JE stands for?). BGW models had no problems with these 4 ohm woofers, but Phase Linear models did. They made a special 6 ohm 189 just for this application. The adjustable spider units (Stroker) are newer. http://www.cerwinvega.com/service/componentrebuilding.html "Sensurround, developed by MCA for the release of "Earthquake" in 1974, underwent several modifications with every release. The general idea, however, stayed the same: low-frequency noises and rumbles, played at high-volumes through specially designed speakers, support the normal soundtrack of a movie. Edited by _djk_ - 21 October 2005 at 7:06am |
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djk
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Pav25
Registered User Joined: 04 October 2005 Location: United Kingdom Status: Offline Points: 8 |
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Thanks guys for your link and advice. I have design for the SL 36B and the B36 C-V. I would like to build a pair of these, which ones would you recommend the full size SL 36B or the smaller B36. And also wot would be the best drivers for them. http://groups.msn.com/SpeakerBuildingpics/shoebox.msnw?Page= 1 ./pbaudio/earthquakeB36/Earthquake B36 Baskast.doc |
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Pav
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Vegaquake1
Registered User Joined: 20 October 2005 Location: United States Status: Offline Points: 3 |
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With regards to the nomenclature, The original B36 was not regarded or named the Junior Earthquake. It was the development of the L-36 box where the "Juinor" name was given. It was at this time they were loaded with the JE woofer. No box prior to the introduction of the L-36 had the JE woofer. All boxes prior to that had 187's, 188 or 189's with the 4 arm rough aluminum baskets. I did notice over the years with the popularity of the L-36 that nerwer B36's were being sold with the JE woofer. Original Carpeted B36's were loaded with the 188EB woofer with the 8 arm rough Aluminum basket. The older fiberglass covered B36's were loaded with 187's or 189's. I know this because I have owned several of every version of sub woofer they made ( some new, some used) with the exception of the Original Earthquake box. (Could never get anyone to part with one unitl recently, but have enough in my collection plus limited space to aquire them now.) I owned The RLA version's and still have two Emeralds which were modeled off of the Earthquake. Quick note: Cerwin vega drivers (woofers) were also used in other manufacturer units back in the seventies and eighties. But you already new that. Most of the drivers used were of the 187 or 188 veriety.
It seems lately C-V has renamed the boxes. We also know that CV was purchased a few years ago and therefore the new powers at be can do and have done what ever they want. |
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If it's not loud...your missin' somethin'!
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Tom Umney
Registered User Joined: 26 February 2004 Location: United Kingdom Status: Offline Points: 4954 |
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There are three models of the Cerwin Vega folded horn now: JE-36B,EL-36B,AB-36B. JE-36B and EL36B has driver with 3 inch voicecoil and 500w prog/1000w peak rating. AB-36B has 4 inch voice coil and 750w prog/1500w peak rating. What I never understand about Cerwin Vega is the wattage, is 750w prog same as rms how they rate it?, cos prog is usually twice the rms.And if that is the case the drivers with a 3 inch voicecoil would have a mere 250w rms rating.
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JD01
Young Croc Joined: 23 August 2004 Status: Offline Points: 819 |
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I tried several CV horns, like the SL36(B) and the JE36. I didn't like them, they were boomy with a big hump in freq plot around 60Hz and nearly no output below that. I took the T36 then, the only ones I know in trap shape. They do a pretty good job, a stack of four will go to slightly below 40Hz and they play pretty flat (no boomy 60Hz sound). They run pretty fine with 1000- 1200W each, but a highpass is needed otherwise they will distort at those power levels.
Edited by JD01 - 21 October 2005 at 10:48pm |
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_djk_
Old Croc Joined: 23 November 2004 Location: United States Status: Offline Points: 6002 |
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I agree, a block of four of the 36" deep ones are OK, and I always use a high pass filter on any kind of low end cabinets. I've used two different 24" deep versions, and I wouldn't recommend either of them. |
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djk
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nos7777
Registered User Joined: 25 October 2005 Location: Italy Status: Offline Points: 16 |
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Hi I'm an HORN LOADED SUBWOOFERS SUPPORTER from Italy that likes A LOT the CV JE with 36" deep and 36" wide and 24" high but I'm not able to find out the project to build up my own one with my hands! Also if someone can suggest me a subwoofer for that project will help me SO MUCH please help me I can't wait to begin to build it up! Thanks so much |
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