Keiga KG5230 Subwoofer Amplifier
zingo
Posts: 11,258
I thought this amp would be great with my Exodus Audio Maelstrom subwoofer project, but the 4db boost at 25hz is in the wrong place for this build. This would be perfect for a 12" subwoofer as it would raise the natural bottom end roll-off of most designs. The amp is in great condition, as was only mounted on top of a cabinet for a bit during testing.
$150 shipped CONUS with insurance and tracking
Class AB
Discrete high current drivers and output devices
Woofer volume control
50Hz to 100Hz continuously adjustable low pass 12dB electronic crossover
Crossover on/off switch
Low and High level input, summed to mono signal
Low and High level all pass output
Phase inverter switch
4dB boost @ 25Hz, 15Hz High pass
Power output Watt@4 ohms: 300
THD: 0.08%
S/N ratio @ rated power: 85dB
Input sensitivity @ 100Hz - low level: 75mV
Input sensitivity @ 100Hz - high level: 3.5V
Input impedance: 22k ohms
Variable Low Pass Crossover Frequency: 50-100Hz
AC Voltage: 115 / 230 switchable
Master power switch
Weight: 14.5 lbs
Dimensions W x H inches: 9-7/8 x 9-7/8 (251mm x 251mm)
Cutout hole W x H inches: 8-7/8 x 8-7/8 (226mm x 226mm)
Depth: 5" (plate to back of unit) (127mm)
Selectable "On" modes
Auto power on/off activated by input signal
12V Trigger (has both input and output)
Always On
https://www.madisoundspeakerstore.com/keiga-amplifiers/keiga-kg5230-300-watt/
$150 shipped CONUS with insurance and tracking
Class AB
Discrete high current drivers and output devices
Woofer volume control
50Hz to 100Hz continuously adjustable low pass 12dB electronic crossover
Crossover on/off switch
Low and High level input, summed to mono signal
Low and High level all pass output
Phase inverter switch
4dB boost @ 25Hz, 15Hz High pass
Power output Watt@4 ohms: 300
THD: 0.08%
S/N ratio @ rated power: 85dB
Input sensitivity @ 100Hz - low level: 75mV
Input sensitivity @ 100Hz - high level: 3.5V
Input impedance: 22k ohms
Variable Low Pass Crossover Frequency: 50-100Hz
AC Voltage: 115 / 230 switchable
Master power switch
Weight: 14.5 lbs
Dimensions W x H inches: 9-7/8 x 9-7/8 (251mm x 251mm)
Cutout hole W x H inches: 8-7/8 x 8-7/8 (226mm x 226mm)
Depth: 5" (plate to back of unit) (127mm)
Selectable "On" modes
Auto power on/off activated by input signal
12V Trigger (has both input and output)
Always On
https://www.madisoundspeakerstore.com/keiga-amplifiers/keiga-kg5230-300-watt/
Comments
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@hochpt21 start getting stuff for your DIY sub man... This would be a good one for a low powered sub....
Or smaller duals (you'd need another of course)
My subs are dual 4 ohms or I'd snatch it up myself"....not everything that can be counted counts, and not everything that counts can be counted." William Bruce Cameron, Informal Sociology: A Casual Introduction to Sociological Thinking (1963) -
This work power an 8ohm load well, but will provide more power and is optimized for a 4ohm load.
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I just heard back from Keiga, and the KG5230 is not rated into a 2ohm load. The amp had over-current protection that will activate if the impedance goes too low for too long.
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