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Multi-Way Conventional loudspeakers with crossovers

TB new line of Coax FR drivers
TB new line of Coax FR drivers
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Old 22nd June 2018, 06:59 PM   #11
bmwparts is offline bmwparts  United States
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Quote:
Originally Posted by Scottmoose View Post
Being a bit of a coax fan, I would like them to be good. Providing the price is right, they could be very interesting. Thing is, they're going to have to offer something that, for e.g., these don't:

H1353-08/06 T18REX/XFC

And at the pricier end

E0051-04/06 C16N001/F

You'll have to do your own filter for both the TBs & Seas drivers though. Which is where much of the system voicing resides.
Yeah I actually have the older H1144 version of the Seas T18REX and it's a really good driver when the crossover is done right. I was initially scared of the Seas Coaxes because of the weird FR on the datasheet, but it turns out they sound great and very revealing. It would be cool if TB get this right! I think the 8" version would make a great setup for low-power Triode amps due to it's sensitivity.
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Old 22nd June 2018, 07:46 PM   #12
chrisb is offline chrisb
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They show lots of promise for small HT systems - particularly for centre channels that are often constrained for space. Sure, getting the XO exactly right will be an exercise, but those networks generally don't take up tons of space.


Also will give the minidsp etc / active aficionados lots of fun.
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Old 22nd June 2018, 11:42 PM   #13
AllenB is online now AllenB  Australia
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Simple. Low sensitivity.
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Old 25th June 2018, 12:13 PM   #14
onni is offline onni  Sweden
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It's a little weird that the frequency response of the tweeter is identical in the 6.5" and the 8" versions... I wonder how the off-axis response looks like. The surround and shallow cone looks like it could produce nice polars.

/Anton
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Old 25th June 2018, 12:46 PM   #15
system7 is offline system7  United Kingdom
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I think we might all need a new hobby.

These coaxial drivers are getting so good, that there really isn't much more to do!

This is effectively a three-way with a small footprint.

The $500 Elac Uni-Fi UB5 designed by budget specialist Andrew Jones of Pioneer fame: Uni-Fi UB5 – Elac

One of my favourite Tech reviewers, Patrick Norton gushes greatly over it in an interview with Andrew: YouTube

Not many people know this, but my avatar is, in fact, Robert Heron, who had a great partnership with Patrick on various tech websites. Get your geek on!
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Old 25th June 2018, 06:43 PM   #16
onni is offline onni  Sweden
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What the hell, I ordered the W6.

I traced the curves and extrapolated to 20 Hz (for tweeter), anyone feel like giving the XO a shot? I'm new to passive XO:s, what XO-point should I aim for? 2 kHz? I'm guessing that the coaxial part enables a higher XO than for a usual 2-way, but the polars should decide I suppose.

/Anton
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Old 25th June 2018, 06:53 PM   #17
onni is offline onni  Sweden
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I started with first order filters, a Zobel and an L-pad and got this:
1st XO - W6-2313.png

That's not so bad, right? I haven't added baffle diffraction yet though.

/Anton
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Old 25th June 2018, 07:00 PM   #18
jamayfie is offline jamayfie  United States
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TB new line of Coax FR drivers
There's a suggested enclosure and crossover posted on the Tang Band website for the W6:

SUG2-25 - 6.5" 2 Way Coaxial Bookshelf Enclosure Suggestion - TB SPEAKER CO., LTD.

Looks like a Kef LS50. Interesting curved port tube....
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Old 25th June 2018, 07:05 PM   #19
CharlieLaub is offline CharlieLaub  United States
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Hmmm, I'm not typically a fan of coaxial drivers but I have to admit the 8" version looks to have a lot of potential. The coax has to be crossed over at about 2kHz because the pattern from the 8" cone will start to narrow there. Would need to see the HD/IMD profile of the tweeter to know for sure. To that I would add a woofer to create a 3-way system, crossing maybe around 350Hz to a sealed 10" in a tall cabinet as narrow as possible, with the coax as high as possible in the baffle and the woofer just below that. The reasoning for adding the woofer is that you do not want the cone of the coax to move because it is the waveguide for the tweeter, so it should not be operated to low frequencies. A 10" woofer can deliver relatively good bass in a large floorstander without having to resort to a "subwoofer" driver and will keep the baffle narrow, which helps with imaging.
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Old 25th June 2018, 09:33 PM   #20
wolf_teeth is offline wolf_teeth  United States
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The woofer has a Neo-slug magnet! Individual slugs like that of the W8 full-ranges, and the underhung full-ranges like the W3-1878.

I'm actually second-guessing myself about what I want to do with the W8-2096 underhung 8" woofers I have now. I am still considering the Corundum 25mm Peerless tweeters, but this new driver really looks good!

Later,
Wolf
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