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Multi-Way Conventional loudspeakers with crossovers

Identification needed for no name woofer speaker (DIY bluetooth speaker project)
Identification needed for no name woofer speaker (DIY bluetooth speaker project)
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Old 4th December 2017, 11:44 PM   #1
taith is offline taith  Poland
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Default Identification needed for no name woofer speaker (DIY bluetooth speaker project)

This woofer was bought to replace used up 30yo speaker.
It have sticker on it, but no information over internet, and claims it's "180w" are hard to believe.
Effective cone area is about 14,5cm, and range of movement is about 2cm (1cm compression until coil touched magnet bottom)
I plan to use it as bluetooth speaker using D class amplifier, however I have no data to calculate case volume needed.
Planned shape will be cylinder with with woofers on sides, not sure if stereo woofer speakers should be separated by the wall.
Also does adding port will decrease required case size? Planned to use front shooting port, if that would be beneficial for the design.
Also speaker photos.
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File Type: jpg 20171204_203621.jpg (626.9 KB, 66 views)
File Type: jpg 20171204_203630.jpg (796.4 KB, 65 views)
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Old 5th December 2017, 12:38 AM   #2
eriksquires is offline eriksquires  United States
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Take it out and look for markers, take pics from back and side.
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Old 5th December 2017, 11:38 AM   #3
taith is offline taith  Poland
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@eriksquires
As mentioned before it's so chinatastic it's better to be referred as no name from china.
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Old 5th December 2017, 03:22 PM   #4
eriksquires is offline eriksquires  United States
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Adding a port almost always requires a larger cabinet. You should look at Room EQ Wizard or.... there's another free product, or Dayton DATS to get the driver parameters.

Best,

E
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Old 5th December 2017, 05:08 PM   #5
eriksquires is offline eriksquires  United States
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taith,

If you want to know about the mechanical parameters of this woofer, and therefore, what adequate cabinets would be like you have one of two choices:

1. Identify the woofer, and get the manufacturer's specs
2. Measure.

So I am confused by you insisting we call it a "no name."

If you want to call it a "no name" then you had best find a way to measure it, because there is no way on earth to get the mechanical measurements for it from images.

Best,

E
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Old 5th December 2017, 09:48 PM   #6
taith is offline taith  Poland
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Then tell me what things are to be measured, is there one equation or several ways to calculate it.
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Old 5th December 2017, 11:13 PM   #7
eriksquires is offline eriksquires  United States
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Hi Taith,

Basic Thiele/Small parameters are usually where people start. You can do this for free with Room EQ Wizard (with a jig) but there's another software package that has a free version people here like.... and I forgot!

Thiele Small Parameters

Once you measure the basic parameters, you can use something like WinISD or even an online calculator to help you with cabinet design. Here is an example online calculator for a sealed box, I'm sure they have a ported calculator too:

mh-audio.nl - Home



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E
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