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The SLOB manifold measures I'm perfectly happy with extension to 35Hz, The woofers are excursion-limited at only W at 35Hz, so I'm more interested in the perceived near-field gain from Spot design than I am in the Fs reduction and Qts increase of the ripoles. With only a 2-board-wide opening in front, the ratio of Sd to front slot area is about 5.
With 4-board wide openings in the back, Sd to slot area ratio is about 2. My questions to all who have played with S. This would bring the ratio of Sd:Slot area down to 3. Are the slots too deep in back?
The Slot Loaded Open Baffle Project Article By Nelson Pass
They are deeper than the central slot on purpose I wanted to simulate a wider baffle. Any guidance appreciated. And to further extend this idea, how about pasd the rear pair of woofer on a inward slanting baffle, almost like a pinch at the rear.
I have made another illustration, this time with a view from the top. The front of the speaker is on the left side: An externally hosted image should be here but it no longer works.
Push Pull Slot Loaded quad SI HT18s - Bass Gear - Data-Bass Forums
Enjoy, Deon PS. In terms of the tweeters- keep one pointing to the loadeed position and play with the angle at which the other is pointed upwards. I think that might work better. I'm building 8 sealed boxes right loaced. Hornresp could probably sim it with its newer capabilities. Over the weekend I was pondering the assertions made elsewhere on this. Is it a case that the air being forced through a smaller slot makes it denser, therefore soundwaves travel faster through it? Does the restriction, effectively, 'couple' the air to the driver's cone?
IMO slot- open plate-loading must bafcle be the same thing - it must surely just present a reduced available area of expansion to the driver's cone, regardless of whether the 'escape zone' is circumferential or just to pass side??
The linked post on avf is wrong, I miscalculated one of the values so the effect was really exaggerated. I think As per 3ll3d00d's recommendation, I shall have to order a Loaded mic as that's calibrated to 5Hz and is slot as expensive as the Bosso-approved mic! I will do some MLP captures tomorrow, hopefully, baffle I've been at this screen for about 12 hours trying to get this bloody program to play ball, and I am now somewhat tired Respect to anyone who uses REW a lot - it is powerful and an amazing shareware, but it is not very user-friendly to get setup initially, seemingly!I am working on a Pass SLOB (Slot Loaded Open Baffle) with a 15" Eminence driver on the bottom and a Cube Audio FC8 full range driver on the top. Jeff McCabe will build the cabinets for me. The baffle board itself is 1/2" thick clear acrylic which has better damping than MDF or . This design is based on a article Nelson Pass wrote about a slot loaded open baffle speaker. Mr. Pass states that the genesis of his slot loaded open baffle woofer cabinet came . Nov 01, · I'm been slowly reading through this thread, and re-reading Nelson Pass's SLOB article for some time, noodling on a way to add more bass to my current open-baffle rig, without using larger woofers, or a huge baffle.
Oh, and a big thank you to James, who was kind enough to lend me the mic and soundcard. You can post now and register later.
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Bass Gear Search In. Reply to this topic Start new topic. Recommended Posts. Report post. Posted May 12, Share this post Link to post Share on other sites. Few spot pics.
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Veneer is looking to be slot expensive! Posted May 15, Pass July 14, Another quick update! Posted July 15, Posted July 16, Damn that is a nice lawn MemX, love this, just monstrous Posted July 17, I've never heard one so I hope I like it I've been contemplating a small, modest ppsl project myself. Open July 18, I have to find them Posted August 1, loaded One graph is full range, the other baffle zoomed to Hz.
Posted August 4, Posted August 5, In an 8x15" driver system, that's not trivial.
Posted August 6, Reduction of Fs mentioned from 27Hz to 16Hz! Posted August 7, I've been struggling loadfd the 'velocity' thing. So, help me out with the velocity thing? Posted August 10, Posted August 11, D'oh, my bad!
Posted September 7, All 3 are slot-loaded, with 18" woofers. The central one has 2 drivers and open as push-pull. It's actually more like a loaded of face-to-face shallow U-frames.
That's for adapting the very-close-to-the-rear-wall positioning for practical reason, no other option for the central sub. The rear slot of the dipole is, I guess, more pass less splited in 2 and becoming side-firing.
This unit was baffle modded to have a cardoid response, well, sort baflfe.
diyAudio - Nelson Pass: The Slot Loaded Open Baffle Project
The trick is simply a cardboard with some punched holes at the back. So, why difference between the left and right? The space itself is asymmetry, I loadrd more bass energy at the emptier right side. More output of the cardiod could be good. The new build is partially for the matrix which tends to be center-heavy. So I need more output at the center for such character Hello CLS and all those baffoe in this set of speakers.
Hello John, You and I both.Sep 07, · Hey all, Just thought Id post some pics up of the boxes I have commissioned for my 4 x 18 SI HT drivers. Should be roughly cu ft per box, and I will run the D2 drivers to show a CV 2Ohm per channel, which should mean wRMS is available for each pair of . This design is based on a article Nelson Pass wrote about a slot loaded open baffle speaker. Mr. Pass states that the genesis of his slot loaded open baffle woofer cabinet came . The Slot Loaded Open Baffle Project Article By Nelson Pass Mehr dazu Finde diesen Pin und vieles mehr auf Open Baffle Speaker - Fullrange Speaker - Vintage Speaker von John Hoffmann (geb.
LOVE the look of these speakers.