DSP-Controlled Speaker with Tang Band W5-2106
I recently constructed a DSP-Controlled bass-reflex speaker with Tang Band W5-2106
Plans (German): BB5 PC-Monitor
I recently constructed a DSP-Controlled bass-reflex speaker with Tang Band W5-2106
Plans (German): BB5 PC-Monitor
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Egad! I'm still wrestling with understanding measurement data but that looks pretty awesome. At pretty much straight line 45 to 12k or 13k or more, it seems like a very good implementation.
This is more of a fun experiment in 3D printing than something serious but it worked better than expected (which was nothing). Since the Tectonics square BMRs have a high fs, they can produce a tapered quarter wave tube that is quite economical with filament (500g). Done using the MH audio TQWT calculator and lightly tweaked in Transmission Line. There's nothing below 85Hz (to my ear, using a signal generator) but, down to that point, it's surprisingly even.
When I first plugged it in, I thought I'd accidentally invoked some audio dark magic before I realised my sub was still turned on.
When I first plugged it in, I thought I'd accidentally invoked some audio dark magic before I realised my sub was still turned on.
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These are very strange to listen to: the mid-highs are extremely clear (as much as a single BMR will permit) while the bass is punchy but tonally compressed. It's like pairing a nice set of small bookshelves with the subwoofer out of a riced car. For some reason, there's 3 bass peaks, at 60, 70 and 87Hz.
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Mine are not very original except maybe for their relative compacity and use of vintage mid-80s French-made Triangle T17FL2 full-range 7" speakers, installed in 50-years dry Beech wood... (click on the pics to see full size 🙄)
Vnet is 32L for speakers showing FS=55Hz / QTS=0.5 / VAS=40L when measured.
Tuning frequency is very low at 35Hz, providing extra-damping (Q=3.2), suitable for good transient response and use with eventually a light bass equalisation (tone-corrector) to compensate the smooth but early bass cut-off, as they are placed in corners.
Probably a TQWT-type load would have led to better performance, but I did not have the room for such enclosures at that time...
A+!
Vnet is 32L for speakers showing FS=55Hz / QTS=0.5 / VAS=40L when measured.
Tuning frequency is very low at 35Hz, providing extra-damping (Q=3.2), suitable for good transient response and use with eventually a light bass equalisation (tone-corrector) to compensate the smooth but early bass cut-off, as they are placed in corners.
Probably a TQWT-type load would have led to better performance, but I did not have the room for such enclosures at that time...
A+!
Alpair 6 sealed dipole surround speakers. Getting ready to test.
Edit:
I see some compression artifacts in those photos, will replace with better version later.
Edit:
I see some compression artifacts in those photos, will replace with better version later.
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Why a dipole? Floyd showed that they were only useful with the 1st generation (& poor) surround sound.
Can you give details of implantation? At one point we did a single sealed A6.2m as a rear surround for Chris.
dave
Can you give details of implantation? At one point we did a single sealed A6.2m as a rear surround for Chris.
dave
Because I autocorrected myself and didn't notice 🙂 They are wired in-phase, bipole.
Listening position is quite close to speakers and hoping to achieve a more diffused sound with less gap in the soundstage. My current monopole surrounds provide a very direct surround sound effect but it is quite easy to detect the gap between them and they lack "envelopment".
Listening position is quite close to speakers and hoping to achieve a more diffused sound with less gap in the soundstage. My current monopole surrounds provide a very direct surround sound effect but it is quite easy to detect the gap between them and they lack "envelopment".
Hey
I’m super pleased! Much fussing with tuning, but they sound quite “level” to my ears. Not hearing anything boxey , boomy or shrill.
Took me long enough to finish these. Started back in 2017...
I’m super pleased! Much fussing with tuning, but they sound quite “level” to my ears. Not hearing anything boxey , boomy or shrill.
Took me long enough to finish these. Started back in 2017...
XKi with W5-2143 finally finished with stain and BLO. Here they fit nicely in the TV stand/book shelf.
Some pretty amazing bass and nice high end from W5-2143's. This is a very nice full range driver.
Some pretty amazing bass and nice high end from W5-2143's. This is a very nice full range driver.
Nice work X - looks like you got the chops now on wood finishing too (besides the foamcore!).
Thanks, Zman. Although the finishing is the easy part. I leave the hard wood working and cabinet making to the professionals. 🙂
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very nicely done, a professional looking finish - they just don’t look like DIY
xrk971 RS225 FAST TL build
Hi,
Here's a pic of my recently completed build of the RS225 FAST Transmission Line speakers designed by xrk971. My build uses the Visaton B80 as the mid-tweeter. The cabinets are yet to be stained or finished. My initial impressions are in this post:
10F/8424 & RS225-8 FAST / WAW Ref Monitor
Enjoying the sound. 🙂 Thanks xrk971 for sharing the design with the DIY Community.
Hi,
Here's a pic of my recently completed build of the RS225 FAST Transmission Line speakers designed by xrk971. My build uses the Visaton B80 as the mid-tweeter. The cabinets are yet to be stained or finished. My initial impressions are in this post:
10F/8424 & RS225-8 FAST / WAW Ref Monitor
Enjoying the sound. 🙂 Thanks xrk971 for sharing the design with the DIY Community.
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Thanks really appreciate that 🙂. I have been working hard to improve the quality of the fit and finish.