Open Baffle Opinions - I Won't go back to Boxed Speakers Evr Again (maybe....)
https://photos.app.goo.gl/cg64ScibP75b1YVF6
My very last DIY effort after doing the DIY Speaker thing (for myself only) for 35 years (only 5 pairs built in that time). These are my best effort WRT to sound quality. Bass down to 30Hz, sweet treble and midrange to die for.
All Parts Express Drivers. GRS Planar, GRS 12" (Qts = 1.27) Woofers, and Dynavox 5 1/4" midrange/midbass Drivers. All in $600. Still some tweaking to to on the Cabinet and the Crossovers. A simple 1st Order 16uF Sonicraft Capacitor on the Tweeter and a 2nd Order Bandpass on the 3 Dynavox Drivers. The H-Frame Woofers section is powered by an ICE Power Class D (1000W@4 Ω). Two for stereo of course. MiniDSP dialed in for a 250Hz Linkwitz-Riley 4th Order LPF, the Bandpass is 250Hz - 2500Hz, and the Magnetic Planar BG knockoff by GRS takes over at 2500Hz. No L-Pads anywhere !
My question is what is the Phantom Center like ? Mine is not as focused as I’d like it to be. But my God, the soundstage, imaging, front to back depth is amazing. Clarity like I’ve never heard before form a Box Speaker and the Bass is like I’ve never experienced. No Box Boom. 40Hz all Day and I can hit 30 Hz with very little attenuation
My very last DIY effort after doing the DIY Speaker thing (for myself only) for 35 years (only 5 pairs built in that time). These are my best effort WRT to sound quality. Bass down to 30Hz, sweet treble and midrange to die for.
All Parts Express Drivers. GRS Planar, GRS 12" (Qts = 1.27) Woofers, and Dynavox 5 1/4" midrange/midbass Drivers. All in $600. Still some tweaking to to on the Cabinet and the Crossovers. A simple 1st Order 16uF Sonicraft Capacitor on the Tweeter and a 2nd Order Bandpass on the 3 Dynavox Drivers. The H-Frame Woofers section is powered by an ICE Power Class D (1000W@4 Ω). Two for stereo of course. MiniDSP dialed in for a 250Hz Linkwitz-Riley 4th Order LPF, the Bandpass is 250Hz - 2500Hz, and the Magnetic Planar BG knockoff by GRS takes over at 2500Hz. No L-Pads anywhere !
My question is what is the Phantom Center like ? Mine is not as focused as I’d like it to be. But my God, the soundstage, imaging, front to back depth is amazing. Clarity like I’ve never heard before form a Box Speaker and the Bass is like I’ve never experienced. No Box Boom. 40Hz all Day and I can hit 30 Hz with very little attenuation
Showing 4 responses by mozartfan
Like IRS design from infinity... the center always suffered because of the OB design and ZERO physical separation between the two speaker drivers (left to right). NOTHING, just space...smear is a serious issue THE BLOB... comes to mind... So you toe in and toe in and.. LOL it just can't work...
~~~~~~~~~~~~~~~~~~~~~ Excellent post, I agree open back weakens the sound projection imaging My Seas Thors (minus the Millennium tweeter, just sold the pair off on ebay in 1 hour), has a *transmission design** Has this added wall plate behind the drivers, runs down the cabinet opens at bottom, then the sound runs up to the top with a opening. I took out all the white fluff JAMMED tight inside (past 20 yrs!) and now the bass/mids has exploded. I need to place a 1 inch thick ceiling insulation behind each W18,, IMHO this transmission design is the best for opening the speakers potential. |
man you are way ahead of my DIYer skills. I have no idea what you are talking about. However , though i do lack the science and deeper understanding of these things,,does not mean i am not willing to do some DIY stuff on my own. I just shipped back the Seas Fa22rcz after 15 minutes of testing . So I am back to the drawng board, Going witha Davidlouis Lowther/Voxativ clone. The 2020 version, the 8 incher. so my New Thor design will be dual W18 E001's + the Lowther/Vox clone 8. Adam at Madisound on <my> new Thor said of it,~~sounds like you got a real Frankensteinspeaker going on there~~~lol, Yep, hope the 87db midbass pair up well with the 95db FR.. |
jimob18 posts05-10-2021 8:16pmI have owned 2 Spatial audio labs speakers ,and currently saving for the Exceptional X3s. They have a great minimal Xover only 3 parts, the CustomBeyma AmT midrange-Tweeter,is excellent and there is no Xover in the critical midrange from 1k on up , very efficient 97db-1watt, 12 inch mid bass , and from 90 Hz down to 25 HZ and is powered for deep clear Bass. ~~~~~~~~~~~~~~~~~~~~ Sounds really nice what you got going on there. I just cked out Beyma's cp750TI horns, weighing in at 15 lbs each!!!! Really nice, But have to pass up these massive and tempting , horns. Staying with a FR + midbass design. The FR goes up into the 10k-15k range, and thats all I need. I have no interest at all past 15k as 99% of classical music has nothing at all past 15k. Sure a horn goes right up to 20k. But for what purpose???? zero interest. As well these , high tech compression mid tweets , have incredible sensitivity at 100-120 db sens. Again for what purpose?? My amp is a true 100 watt PP. On midrange/highs I look for 94/95 sens. Even 97db is too high. I listen extremely near field in my small room , so anything higher than 95db is a overkill. Over 95db on a full range, this would mean gain on the linestage would be set very low, which would not allow the W18E001's to open up.. The dual W18E001's are acting like a bass floor for the Full range. Really is a Frankenstein of a speaker I havea pair of open baffle,, well honestly, they have 1 screw hopding the driver to the top of the Thor cabinet,, The Millennium spot is now open as a front baffle, , took out most of the stuffing fill and placed a 1 inch pad behind each W18/ Lots of bass and sounds super. The Diatone 6.5 is far superior to the Millennium tweeter for full rich midrange/highs. Even a bit lo nice solid upper bass. We need to begin thinking outside the box. I should have made this Frankenstein pre-upgrade on the Thors. The loss in that upgrade project really pushed my bottons and I came up with this New Thor design in frustration and despair. Suffering is the root of creativity. |