Geezer article- May 1956 David Weems $3 Celotex Corner Baffle

here ya go
 

Attachments

  • MARK2 ONE.JPG
    MARK2 ONE.JPG
    344.4 KB · Views: 253
  • MARK2 2.JPG
    MARK2 2.JPG
    250.4 KB · Views: 251
  • MARK2 THREE.JPG
    MARK2 THREE.JPG
    250.1 KB · Views: 251
  • MARK2 PLAN.JPG
    MARK2 PLAN.JPG
    249.3 KB · Views: 265
Yeah, 'blast from the past'! I keep the article on my Flickr page. Me and a couple friends built a number of these and being only age 10 with a meager driver selection we still got Cub Scout Merit badges for them and frankly, I liked ours better overall compared to the neighbor's Karlson K15 kit I've mentioned on occasion.

In retrospect, the K15s super strong [mid] bass XO'd to our 'FR' driver baffles might could of been a pretty good mono HIFI combo! I shutter to think how much such a low XO would have cost though!
 
wow GM - that was really hip for age 10 - do you think it could compete with EV's "Aristocrat"?

I only made one of Weems projects - a pair of foo length i-line for 12" wppfer and around 9 cubic bulk. My plywood wasn't great. Initially it had a whizzer cone 8 mid and rectangular horn tweeter from McGee. Later I replaced the 8 with a 5" and the horn with two Phillips Mylar 1" dome tweeters. The 12" woofer was a Lafayette-perhaps Jensen with bell cover over its magnet. I loved the horn tweeter although it might not gone past 12K(--? I could hear to ~18K in those days)

I never heard a KLH Five but assume it would have trounced this t-line and woofer pick in every area.

Do you remember this speaker's article? I can't remember which horn I used -it was larger than a T35 for sure and likely the one for "$7.95"

I think the depth was 20" not 18"
 

Attachments

  • weems t-line.jpg
    weems t-line.jpg
    32.2 KB · Views: 92
  • MCGEEN HORN TWEETERS.jpg
    MCGEEN HORN TWEETERS.jpg
    424 KB · Views: 92
Last edited:
You asked for it IG81-from the yellowed pages a rehash but better adjusted Diffusicone 8 cabinet plus David Weems sandwiching a layer of Celotex between two plywood panels

50 years ago I converted my5 cfreflex to a big vent reflex for a 6 inch fullrange from McGee Radio. It was impressive at the time.
 

Attachments

  • DIFFUSICONE 8 ONE.JPG
    DIFFUSICONE 8 ONE.JPG
    756.9 KB · Views: 121
  • DIFFUSICONE 8 TWO.JPG
    DIFFUSICONE 8 TWO.JPG
    1.4 MB · Views: 129
  • SAND 1.JPG
    SAND 1.JPG
    745.4 KB · Views: 130
  • SAND 2.JPG
    SAND 2.JPG
    506.5 KB · Views: 127
  • SAND3.JPG
    SAND3.JPG
    786 KB · Views: 115
  • SAND4.JPG
    SAND4.JPG
    855.8 KB · Views: 124
do you think it could compete with EV's "Aristocrat"?

No clue as at that point in life Jack's K15 was the only non console speaker in any of the homes I was ever in (most only had radios, TV like us) and after we moved two years later my exposure to any audio/electronic magazines was limited to some brought in by students in high school and by graduation was firmly entrenched with Altec, Heathkit, so ATM can't recall any other 'el cheapo' DIY speaker designs I did other than my scaling off pictures with a Pantograph till I hooked up with Ron, the one armed guy that was 100% fixated on all manner of cardboard tube TLs and willing to share his hard won knowledge.
 
a big vent reflex......was impressive at the time.

Indeed! Jack had originally planned to do one, but the allure of the K15s 'far out look'/technicality was just too strong to resist, so didn't get to try Cohen's 1/8 WL BVR until my intense 'research' in '68, though didn't have the plans, just his write-up in his '56 book, so cobbled one together based on Altec's small box size for the 416A out of one of my DIY A7-500s.