New 8" full range speaker from L CAO - diyAudio
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Old 12th August 2008, 05:19 AM   #1
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Default New 8" full range speaker from L CAO

( I am here to happily introduce a new 8" full range speaker from L CAO in China. The following is a translation from L CAO's post at http://www.diybuy.net/thread-140180-1-1.html. )

After three years, finally the 8" full range speaker is fledged. I can still recall those days when I was looking for material to build the paper cone, recall the numerous miles left behind just for several types that met my requirement. They were manually cold-processed, decomposing in 3 months and yielding long fibers. This was only the first step.

The second step was to determine the cone shape. I modified it many times before getting satisfactory result.

The third step was to experiment on other components of the speaker. I can't recall how many different combinations I have tried; what I can recall is that I have experimented on 10 different voice coils.

Many people had listened to it. They gave me many valuable critics and suggestions. The design was not finalized until most of them felt it was satisfactory.

Features
Magnet: type Y30,Diameter 130mm (5.1"), height 15mm (19/32")
T shaped iron core is machined from a block.
Symmetric magnet circuit, with shorting ring to suppress distortion.
Voice coil bobbin is made from special material. Diameter 25mm (1")
Frame is made of Aluminum-Magnesium alloy.
Spider is cold press shaped. Overall, one spider is picked from 3.

Measures
Power 30W
Impedance 8 Ohms
Xmax 1.8mm
Sensitivity 94DB
Resonant frequency 55Hz
Qts: 0.65
Vas: 70 liters

Speaker in cabinet
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Speaker in cabinet with equalizer
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Equalizer
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Distortion of speaker in cabinet with equalizer
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Old 12th August 2008, 05:58 AM   #2
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Default Some pictures

Here are some pictures. The original post is http://www.diybuy.net/thread-142365-1-1.html.(One must be logged to view the post at diybuy.net)

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Packaging: cone protector
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Bottom foam
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Top foam
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Old 12th August 2008, 06:13 AM   #3
Zen Mod is offline Zen Mod  Serbia
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one must be logged , to see informations on www.diybuy
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Old 12th August 2008, 06:29 AM   #4
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Right, I forgot that people need to log in to view the posts there. I edited the second post but was not allowed to edit the first.
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Old 12th August 2008, 06:50 AM   #5
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Default Re: New 8" full range speaker from L CAO

Quote:
Originally posted by HighVividity
[B]( I am here to happily introduce a new 8" full range speaker from L CAO in China. The following is a translation from L CAO's post at http://www.diybuy.net/thread-140180-1-1.html. )



Features
<SNIP>
Overall, one spider is picked from 3.
<SNIP>
If the meaning is that the factory rejects 2/3 of its product then that seems indicative of out-of-control production processes.

Caveat emptor!
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Old 12th August 2008, 09:28 AM   #6
cd813 is offline cd813  China
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Default good job! guy

very nice full range speaker.i have listened this speaker sound really beautiful.recommend
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Old 12th August 2008, 12:15 PM   #7
ttan98 is offline ttan98  Australia
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Default Re: Re: New 8" full range speaker from L CAO

Quote:
Originally posted by Brisso57


If the meaning is that the factory rejects 2/3 of its product then that seems indicative of out-of-control production processes.

Caveat emptor!

Typical comment, trying to rubbish Chinese product.

If you don't know either ask or keep quiet, don't make wild guesses here.
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Old 12th August 2008, 12:36 PM   #8
Zen Mod is offline Zen Mod  Serbia
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well - I like what I see ;

any further info , possible price range ?
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Old 12th August 2008, 01:28 PM   #9
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Default Re: Re: Re: New 8" full range speaker from L CAO

Quote:
Originally posted by ttan98



Typical comment, trying to rubbish Chinese product.

If you don't know either ask or keep quiet, don't make wild guesses here.

OK. Fine.
The literal meaning is as commented. Is this correct? Are 2/3 of the production spiders rejected as substandard?
It's quite a relevant question actually.

PS "Typical" of whom? Someone outside the cheer-squad? If a statement is made, let it be defended. That's how it is in democracies.
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Old 12th August 2008, 01:56 PM   #10
pjanda1 is offline pjanda1  United States
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Wow. Those are gorgeous. Specs? Prices?

pj
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