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W6-2144 - Design time!!
W6-2144 - Design time!!
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Old 6th March 2019, 11:25 PM   #1
eusubius is offline eusubius  Canada
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Default W6-2144 - Design time!!

Just bought a pair of these on sale:
Tang Band W6-2144 6-1/2" Paper Cone Full Range Driver 8 Ohm

They look amazing, weight 8lbs 3oz ! The last FR speaker I built (or my dad built?) I was probably 14, and it was just a closed box with spare speakers.

I'd like to build a TL or MLTL, maybe TWQT ?

I've built / designed ported boxes mainly, using win-ISD. Never used Hornresp or designed any horns / TLs. I actually monitor in the studio with some TL studio monitors, so I do like the clean deep bass I get, though it's not earth shaking.

These will be used for music mainly, but maybe the odd movie (especially for the kids). In the basement den. Not a huge room, so these will probably be kind of near a wall. I have some ceiling treatment in the room from when I used it for recording. I'll probably use my old Yamaha receiver for now, and maybe get a little class D in the future.

At this point, I'm looking for help, tips, design ideas, etc.

Main goals:
-Natural, extended low end
-great imaging
-music mainly, but i know I could always add a couple capacitors (HPF 80hz) and a sub if I wanted to turn it loud on movies.
-Narrow tower with these at listening height.

I listen to everything from techno to Bach. Or maybe it's just techno AND Bach? Just help me make sure the 808's and pianos will all play nicely

It seems like there are SO many designs out there for FR TL's, etc. Any recommendations for this driver? MLTL? TWQT? etc? Offset the driver?

Do I need some kind of baffle step circuit, since I prefer this to be a narrow (but maybe deep) cab?

thanks in advance...
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Old 7th March 2019, 01:18 AM   #2
GM is offline GM  United States
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Specs look good for an offset driver MLTL, so what's the desired seated ear height?

GM
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Old 7th March 2019, 01:42 AM   #3
eusubius is offline eusubius  Canada
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Haven't measured it! What's the average?

Is the treble going to beam enough to make it a crucial decision? Offset MLTL sounds great! I've liked all that I've heard of MLTL & Martin King's work.
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Old 7th March 2019, 01:50 AM   #4
GM is offline GM  United States
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~38". If you have good hearing out to 20 kHz there's a some tolerance depending on chair, sofa, driver design, distance, but for most males it's not very critical, so what I use unless told otherwise.

GM
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Old 7th March 2019, 01:51 AM   #5
phivates is offline phivates  United States
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Le .01 mH...this underhung voice coil deal is for real. Don't worry about the beaming, adapt to it. Should be good.
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Old 7th March 2019, 02:18 AM   #6
eusubius is offline eusubius  Canada
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Quote:
Originally Posted by phivates View Post
Le .01 mH...this underhung voice coil deal is for real. Don't worry about the beaming, adapt to it. Should be good.
Haha I never could figure out how Le would even affect performance, but that sounds awesome. I never see inductance that low cone to think of it.

Not worried about beaming. I only need the listening chair a few times a week.

38" sounds familiar, let's go that!
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Old 7th March 2019, 03:01 AM   #7
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OK, ~57.5 L net tuned to ~36 Hz mounted on a 1" thick/massive base plate. Due to low Xmax + specs dictating tuning < Fs, limited to 6-8 W down low.

All dims i.d., damp to taste [sim in LW just has some polyfil behind the driver]:

GM
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File Type: txt TBW6-2144MLTL.txt (1.0 KB, 166 views)
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Old 7th March 2019, 03:17 AM   #8
GM is offline GM  United States
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If size isn't a problem, ~85.7 L net with a larger/shorter vent is more in the size range I prefer:

GM
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Old 7th March 2019, 03:35 AM   #9
eusubius is offline eusubius  Canada
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Larger size I understand will increase low end output, but the smaller would help control the cone better, limiting excursion?
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Old 7th March 2019, 04:36 AM   #10
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In a BR, where the best overall trade-off between size, power handling is Vb = Vas/1.44 tuned to Fs, but MLTLs by their nature are acoustically large, so up to a point, larger = larger vent due to increased acoustic damping from its 1/4 WL pipe action, hence my preference which actually is way larger than my 'entry level' sim since my normal alignment requires an Av = Sd size vent.

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