KEF KASA500 Subwoofer Amplifier

About The KEF KASA500 Subwoofer Amplifier

This DSP controlled system amplifier is optimized to deliver thunderous bass from KEF Ci subwoofers. KASA500 is a powerful Class-D Dual 250 Watts per channel amplifier. This DSP controlled system amplifier is optimized to deliver thunderous bass from KEF Ci subwoofers. With both line and speaker level inputs, and DSP configurable pass-through with optional high pass filters – the KASA500 is versatile and can be deployed in limitless system configurations. Optional rack mount ears included.

To allow for future flexibility KEF engineers may update the KASA500 DSP firmware to optimize performance with additional KEF speakers. The KASA500 Programmer is a proprietary tool for updating the KASA500 firmware. Note: KASA500 software requires a "USB Type A Male to USB Type A Male cable" for connection between your computer and the KASA500.

The latest KASA500 Firmware provides settings for KEF Ci subwoofer models Ci3160RLb-THX, Ci200QSb-THX, Ci200TRb, Ci4100QLb and Ci250RRb with THX certified performance (if applicable) in both mono and stereo mode.

Our Review

The KASA500 DSP-Controlled Subwoofer Amplifier is the perfect match for KEF’s Ci sub range, including the Ci3160RLb-THX, Ci200QSb-THX, Ci200TRb, Ci4100QLb, and Ci250RRb. Designed for precision and power, it delivers the deep, impactful bass needed for THX Certified performance. One amp can even drive two Ci3160RLb-THX subs for maximum low-end punch.

Main Features & Specifications

• Design: DSP Controlled Subwoofer Amplifier
• 2 x 250W Class D amplifier
• Combines with KEF Extreme Home Theatre subwoofers to deliver THX Certified performance levels (dependant on configuration)
• Configurable for stereo and mono operation
• Speaker and Line Level inputs
• Selectable DSP settings to optimize output to perfectly match KEF custom installed subwoofers
• Configurable Pass-Through: Full range/high pass filtered and stereo/mono
• Music Sense, 12V Trigger and Always On mode
• Upgradable Firmware via USB
• Removable Power Cable: Upgrade to an IsoTek Power Cable for better performance
• Compatible with KEF Ci Subwoofers: Ci3160RLb-THX, Ci200QSb-THX, Ci200TRb, Ci4100QLb & Ci250RRb

Technical

• Selectable Inputs
  • Stereo RCA Line Level
  • Mono LFE RCA Level
  • Stereo Speaker Level
• 12 Volt Trigger Input Voltage: 8 to 14 Volt DC@1.5mA max ⅛" diameter female plug (tip positive or tip negative)
• Crossover Frequencies: 40 - 140Hz or Software Bypass
• Amplifier Power
  • Stereo: 2 x 250 Watts into 4 Ohms (<1% THD)
  • Bridged Mono: 1 x 500 Watts into 8 Ohms (<1% THD)
• Finish: Black
• Dimensions (WxHxD)
  • Without Feet: 432 x 88 x 304mm
  • With Feet: 432 x 92 x 304mm
  • With Rack Ears: 483 x 88 x 304mm
• Weight: 4 kg
• Manufacturer's Warranty: 2 Years + 1 Extended Year when Registered at KEF.com

Note: Features & Specifications Subject To Change Without Notice. E&OE.