Zilch's AK Design Collaborative - Econowave Speaker
- Thread starter Zilch
- Start date
jackgiff
Well-Known Member
I would prefer to use the LE14H-3, except for cost. Wow, they are not cheap. They have rubber surrounds, and should last forever. The pair I have will be used in the front speakers for my home theater system.
LE14A's are plentiful, cheap, and unless they have been abused, they fill the bill quite nicely. They make great bass when refoamed, and are my favorite woofer at this point in time. Don't know why everybody doesn't use them.
skywave-rider
Slumming in Akihabara
Fast
Jack and all, I have a question which I'm not sure how to ask, but here goes. Regarding bass, what type of woofer will give "fast" bass. I'm not sure how to define that. Maybe it's that the woofer makes good transients. Whatever, know what I mean? If I'm looking for a woofer, how to know what's fast, what's not? I assume the crossover topology relates to this; or does it?
Where does the LE14 lie in this aspect?
Waiting for Zilch to yell at me......:thmbsp:
I'll take my answer off the air.
Jack and all, I have a question which I'm not sure how to ask, but here goes. Regarding bass, what type of woofer will give "fast" bass. I'm not sure how to define that. Maybe it's that the woofer makes good transients. Whatever, know what I mean? If I'm looking for a woofer, how to know what's fast, what's not? I assume the crossover topology relates to this; or does it?
Where does the LE14 lie in this aspect?
Waiting for Zilch to yell at me......:thmbsp:
I'll take my answer off the air.
dnewma04
The Healer
Woofers with low inductance (Le) are "fast".
From a perception standpoint, many people find deep bass slow, regardless of how quick it is. It's a tricky subject. You will hear countless people say that smaller diameter drivers are faster, and they can be, but it has nothing to do with the mass of the cone or the dimension of the driver as some people seem to think. Inductance, Inductance, Inductance.
From a perception standpoint, many people find deep bass slow, regardless of how quick it is. It's a tricky subject. You will hear countless people say that smaller diameter drivers are faster, and they can be, but it has nothing to do with the mass of the cone or the dimension of the driver as some people seem to think. Inductance, Inductance, Inductance.
dnewma04
The Healer
A beefy motor doesn't buy you quickness but it gives you efficiency. The function of an inductor is to resist changes in the electrical signal. A VC is an inductor, therefore it's inheeently resisting changes in the signal. The lower the inductance, the less resistant it will be to change and the faster the driver will be.
PT Waveguide in Canada
I'm looking for a pair of the 338800-001 JBL waveguides and I'm in Ontario, Canada.
I called Soundcraft Canada and they told me that part was not in stock, availability in 3-4 weeks max, price was $9.62.
I then called JBL Parts and was told they were out ('hmm, someone seems to have scouped them all up...'), the other warehouse also showed no stock and they would need to be shipped up from manufacturing in Mexico.
I'm supposed to get an email update from JBL Parts when he hears back from manufacturing, and that's all I know right now.
If anyone else in Canada is interested, please let me know. Maybe we can do a group buy or get some of the Pyle PH612 shipped up here.
I'm looking for a pair of the 338800-001 JBL waveguides and I'm in Ontario, Canada.
I called Soundcraft Canada and they told me that part was not in stock, availability in 3-4 weeks max, price was $9.62.
I then called JBL Parts and was told they were out ('hmm, someone seems to have scouped them all up...'), the other warehouse also showed no stock and they would need to be shipped up from manufacturing in Mexico.
I'm supposed to get an email update from JBL Parts when he hears back from manufacturing, and that's all I know right now.
If anyone else in Canada is interested, please let me know. Maybe we can do a group buy or get some of the Pyle PH612 shipped up here.
]
Has anyone tried these Pioneer woofers at PE with a E-Wave?
96db 1W/1M
Fs: 20Hz
for $50
Sounds like a heck of a combination
96db 1W/1M
Fs: 20Hz
for $50
Sounds like a heck of a combination
Can anybody read the FR curve in the .pdf?
http://www.partsexpress.com/pdf/290-175s.pdf
Looks like those are sims, not measured response....
http://www.partsexpress.com/pdf/290-175s.pdf
Looks like those are sims, not measured response....
Can anybody read the FR curve in the .pdf?
http://www.partsexpress.com/pdf/290-175s.pdf
Looks like those are sims, not measured response....
Z, as normal, I suspect you are correct. However, even if they are remotely accurate, it looks good to me. What I see as troubling may be the small size of the magnet structure/motor. It may just be too small to perform very well in terms of time response. Frequency Response is but one aspect. A waterfall time lapse test might be much more telling of why it is only $50...
I've used those before. Those woofers have actually been available for at least 20 years... they were in the catalogs as far back as 1987.
As long as you're not using lots of power, they seem to work well.
As for the magnet- the Qes is really small... a high Bl product, which indicates good "control". Fairly light cone mass and moderately low Le (inductance) as well, IIRC. They seemed to be well-behaved to up around 1KHz.
Of course, it's been years since I last used one... so, the sort of measurement apparatus that's commonplace now, was simply not around then. It would be up to someone to get one and do a through frequency response sweep and/or waterfall plot, to get the complete story...
Regards,
Gordon.
As long as you're not using lots of power, they seem to work well.
As for the magnet- the Qes is really small... a high Bl product, which indicates good "control". Fairly light cone mass and moderately low Le (inductance) as well, IIRC. They seemed to be well-behaved to up around 1KHz.
Of course, it's been years since I last used one... so, the sort of measurement apparatus that's commonplace now, was simply not around then. It would be up to someone to get one and do a through frequency response sweep and/or waterfall plot, to get the complete story...
Regards,
Gordon.
skywave-rider
Slumming in Akihabara
So with .85 mH of vc inductance, is this potentially fast?
Cosmos, I am sure PE monitors this thread. The price just went up.
Cosmos, I am sure PE monitors this thread. The price just went up.
That's true, if you're trying to unhinge your house from the foundation.
Otherwise, remember... it IS a 15" woofer. And it's got as much excursion as many of the Electrovoice 15" drivers (about 3-4mm or so in each direction), IIRC...
Last of those I had here, I built into a pair of DJ/party speakers for a friend... TWO each, per 10 cubic foot cabinet (just over 3 feet tall, just under 2 feet wide and just under 2 feet deep). Used an Altec 6x9 (woofer from a Voice of the Highway 6X9-4B) as a mid, and a pair of small "baby cheeks" horns per cabinet as highs. Quite effective. On a QSC USA900 power amp, a MTX mixer and some NAD CD players, it could re-arrange the china in the cabinets...
Regards,
Gordon.