DIY Chorus XP3 clone - Home Theater Forum and Systems - HomeTheaterShack.com

 
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post #1 of 4 Old 07-16-06, 02:08 PM Thread Starter
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DIY Chorus XP3 clone

Manufacturer: DIY
Provided by: Kinks-58
Manufacturer link: Suomen Hifitalo Oy (original model)
Price: Not calculated (original model is 520 EUR )

Manufacturer specs:
• Enclosure: Passive radiator, ~35 litres, 18 mm real birch + 12 mm plywood, heavily braced with 18 mm MDF and concrete/lead alloy
• Woofer: Peerless XLS 12”
• PR: Peerless 830549 (618 g)
• Amplifier (external): Hypex HS-200 (125 W into 8 Ohm, 200 W into 4 Ohm)
• Crossover: 30-120Hz, 24 dB/oct.
• Phase: Variable 0-180 degrees
• Subsonic filter: Yes @ ~18 Hz (bypass available)
• Weight: 46 kg

Configuration as tested:
Phase: 0 degrees
Subsonic filter: On (FR graph was taken without a SS filter)
Orientation: Sideways



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post #2 of 4 Old 07-17-06, 10:01 AM Thread Starter
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+/- 3 dB points: 21 Hz - >200 Hz
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post #3 of 4 Old 07-17-06, 10:02 AM Thread Starter
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post #4 of 4 Old 07-17-06, 02:31 PM Thread Starter
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This subwoofer is built like a tank. I couldn't believe how heavy it was until I tried to pick it up. The shape of the frequency response is really good. Slowly sloping response matches well with room gain. Max output is rather good for such a small sub, though the 105 dB sweep produced a lot of distortion due amp clipping. With a more powerful amp the 105 dB sweep could have been much more cleaner and probably even compression-free. At lower output levels the THD stays really low at all frequencies. THD consists mainly from 2nd order component which makes it even less audible. Group delay rises pretty rapidly below 30 Hz, but it shouldn't be that audible. Spectral decay shows some ringing around 20 Hz, but it's still better than average. Spectral contamination tests shows better than average performance and I'm pretty sure the 100 dB level could have been possible with a more powerful amp. A really nice looking sub with a respectable performance. It also has an external amp which can be switched easily.

+ Good extension and very good shape of the frequency response
+ Low distortion up to 100 dB output level
+ Reasonably low group delay and short decay time
+ Really strong and rigid enclosure

- Weak amplifier
- Maximum SPL capability
- Slightly high group delay at the low end
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chorus , clone , diy , xp3

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