KGND-5250 Class D 500 Watts @ 4 Ohms

KGND-52100 Class D 1000 Watts @ 4 Ohms

Powered Subwoofer Amplifiers

Madisound is pleased to offer these new powerful Class D amplifiers.

A Class D amplifier is a switching amplifier that converts a low level analog signal into a high power pulse width modulated output.

The KGND-52100 is 86% efficient, inherent in the Class D design and also because of the efficient power supply. The 1950 watt peak analog power supply is a cleaner power source than switching power supplies found in most other Class D amplifiers. The KGND-52100 also has a very low standby power consumption of 1 watt, which meets new European standards. Because of its efficiency, the amp produces very little heat.

We have worked hard to find subwoofer amplifiers that have adjustable electronic crossovers and have enough power to deliver good bass without added distortion. We are confident that we now have products that can meet the demands of both home theater or high end audio systems. Powered subwoofers are a versatile addition to your audio system.  With the variable crossover and volume control, you can match a subwoofer to any existing system.

KGND52100 Digital Plate Amplifier
$545.00

The back of the KGND-52100 is protected by a plastic enclosure (not shown).

• Very high efficiency Class D amplifier
• ICEPower® module - ICE1000A
• High current MOSFET output devices
• Low pass frequency adjustable
• 50Hz to 100Hz continuously adjustable low pass 12dB electronic crossover
• Woofer level control
• Phase inverter switch control
• Bass EQ on/off switch control
• Master power switch control
• Line level input/ output
• Speaker level input/output with binding posts
• Dedicated LFE input/output
• IEC power socket
• AC 115V/230V switchable

KGND-52100 Specifications

Power output @ 0.1% THD: 4 ohms 1000W
Power output @ 10% THD: 4 ohms 1200W
THD 0.08%
S/N ratio @ rated power
90dB Input sensitivity @ 100Hz - low level 190mV
Input sensitivity @ 100Hz - high level 4.2V
Input impedance 22k ohms

Variable Low Pass Crossover Freq. 50-100Hz
Bass EQ @25 Hz 5db

Efficiency 86% Weight 13.5 kg

Dimensions W x H x D inches 12 x 12 x 4.5"

Dimensions W x H x D millimeter 305 x 305 x 115mm

AC Voltage 115/ 230 K

KGND5250 Digital Plate Amplifier
$387.00

500W into 4 ohm

A Class D amplifier is a switching amplifier that converts a low level analog signal into a high power pulse width modulated output. The KGND5250 is 82% efficient; inherent in the Class D design and the efficient power supply. The 1950 watt peak analog power supply is a cleaner power source than switching power supplies found in most other Class D amplifiers. The Keiga Class D amps also have a very low standby power consumption of 1 watt, which meets new European standards. Because of its efficiency, these amps produce very little heat. The Keiga Class D Amps use the ICEPower modules, developed by Bang @ Olufsen Powerhouse a/s. The amps are equipped with a protective casing on the back.

*** Do not short the leads while the amp is turned on!!! This will destroy the Ice Power Module and is an expensive repair. ***

Features:
Very high efficiency Class D amplifier; high current Mosfet output devices.
Low pass frequency adjustable 50~100Hz.
Woofer level control.
180o Phase invert switch.
Auto on control, switchable.
Very low standby power.
Thermal protection
Master power switch.
LFE input.
RCA in/out (out has no crossover).
Speaker level in/out (out has no crossover).
IEC power socket.
LED power indicator.
AC 115V/230V switchable.

Specifications:
Power output @ 10% THD, 4 ohms 600W
Power output @ 1% THD, 4 ohms 500W
T.H.D. 0.08%
S/N ratio @ rated power 80dB
Input sensitivity @ 100Hz
(RCA) low level 150 mv 190mv
(Speaker) high level 3.5v 4.2v
Input impedance 22k W
Variable low pass frequency 50~100Hz
Efficiency 82% 86%
Standby power consumption 1W
Dimensions
Width 12"
Height 12"
Depth 4.5"