The Needle is basically an expanding TL, so historically referred to as a horn or in some circles, a TQWT [TQWP, TQP], but its terminus is restricted by a smaller area [ducted] port to smooth out, extend its LF gain BW, i.e. 'mass loaded', or ML-TQWT using MJK's ~accepted jargon.
If it was a straight taper, then ML-TL [MLTL].
GM
Enclosure for W5-2143
Hi,
I send pictures about my W5-2143 project. The stuffing material is wadding (cotton). The high frequencies are clear, the full frequency range is all right. Bass is deep and precise, middle is detailed and nice, high frequencies are nice too and no distractions. The stereo is good, the stage is wide. Sorry for my not perfect English, I hope it is undrestandable.
Hi,
I send pictures about my W5-2143 project. The stuffing material is wadding (cotton). The high frequencies are clear, the full frequency range is all right. Bass is deep and precise, middle is detailed and nice, high frequencies are nice too and no distractions. The stereo is good, the stage is wide. Sorry for my not perfect English, I hope it is undrestandable.
Great pictures! English is perfectly fine...A couple of more questions if you don't mind..
Are yours using any kind of passive filter or compensating network, or are they connected straight to the amplifier?
About the cotton wadding, was it applied up and down the horn internal wall or only concentrated at the tapered bottom end as shown in the picture
Thanks again..
They were originally variations of offset driver TLs, horns, but over time only the expanding TL/horn was popularized with the BIB being one and Lowther of Norway's and David Weems's mass loaded versions, so a ML-TQWT [ML-Voigt] in MJK's jargon:
Improvements in means for converting electrical energy into sound
http://www.diyaudio.com/forums/full...anyone-have-those-fostex-craft-handbooks.html
Voight pipe enclosures
Tapered Quarter Wave Pipes
GM
BLH for W5-2143 (?) and Alpairs 10 (???)
Scotmoose and others
Please comment, japanese BLH plans
13?14????????????????DD-BH | Phile-web??????
http://community.phileweb.com/images/entry/485/48579/1L.jpg?1441099957
http://community.phileweb.com/images/entry/485/48579/2L.jpg?1441099957
thanks
Scotmoose and others
Please comment, japanese BLH plans
13?14????????????????DD-BH | Phile-web??????
http://community.phileweb.com/images/entry/485/48579/1L.jpg?1441099957
http://community.phileweb.com/images/entry/485/48579/2L.jpg?1441099957
thanks
【候補ユニット】- means Candidate unit
TangBand W5-2143(※2) - would that mean its for 2 2143 units to be used in one box?
W5-2143 biger Needle
There is not any compensation network, the driver is connected straight to the amp. The Zobel network was installed only. (R=8 Ohm, C=1.5 uF)
The wadding is polyethylene fiber, like the coat lining. I suggest you to do experiments with different materials. The wadding is at the tapered bottom, between the driver and the throat. It is recommended to cover the walls at cambers with polyfoam layer.
There is not any compensation network, the driver is connected straight to the amp. The Zobel network was installed only. (R=8 Ohm, C=1.5 uF)
The wadding is polyethylene fiber, like the coat lining. I suggest you to do experiments with different materials. The wadding is at the tapered bottom, between the driver and the throat. It is recommended to cover the walls at cambers with polyfoam layer.
That's certainly what it implies and appears they will just barely fit, though without reverse engineering it, no clue if it's will be a good performing alignment.
GM
JC version of W5-2143
Pieces numbered 13 and 14 are the moveable tuning piston for deep sounds. It would be useful for different rooms. I like it.
I hope I've seen it right.
Pieces numbered 13 and 14 are the moveable tuning piston for deep sounds. It would be useful for different rooms. I like it.
I hope I've seen it right.
First Impresion...very favorable. I was surprised at the amount high frequency on this driver (2143). Clear uncongested midrange, flat bass but is all there on the 14.5 liter boxes I built. Then I switched the tone controls on the little Lepai 2020 amp to bass at 3 o'clock and treble to 2 o'clock...much better!. But then I figured, I was listening in my driveway...open air with no walls around. At the end of day I moved the working table with speakers on top into the garage. The bass came to life and it was fairly deep for a 5 in. driver. More to do tomorrow...
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