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Elite Shackster
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Discussion Starter #1
Manufacturer: DIY
Provided by: Puolijohtaja
Manufacturer link: -
Price: ~300 EUR

Manufacturer specs:
Enclosure: 60 litres, sealed
Woofer: Diamond Audio CM312D4
Using a negative feedback loop (dual voice coil)

Configuration as tested:
Orientation: Woofer facing the mic



 

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Elite Shackster
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1,468 Posts
Discussion Starter #4
There are some serious problems with the DIY servo control. It keeps the frequency response flat down to 20 Hz, but the THD is rocketing at the same time. There is also a strong peak at ~65 Hz. Group delay and spectral decay are affected by the multiple resonances over the whole pass-band. Spectral contamination test shows lots of distortion.

+ Good extension
+ Low group delay

- Extremely high distortion
- Max SPL capability
- Lots of ringing in mid and upper bass range
 
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