Sennheiser

Sennheiser K-Array KA7-7 Pro Amplifier

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  • Regular price $2,294.95
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The KA7-7 350-Watt Class D 4-Channel Power Amplifier with DSP Controls by K-Array adds to its extensive feature set with a lightweight, efficient, and rackmountable build. Its stereo input feeds four internal amplifiers, which power left and right mains, plus two mono-summed subwoofer channels.

The KA7-7 has two balanced XLR inputs with a switchable ground lift and a rotary input pad ranging from unity gain to infinity. It provides a USB output as well as dual RS485 jacks for PC connectivity. Built for daisy chaining, the KA7-7 has XLR link outputs for program signal, and a PowerCon output to link power. A dip switch on the rear panel allows up to 30 unique ID assignments for remote controlling arrays via software. The dual Speakon outputs each carry two channels, a side of the stereo signal and a mono sum of both sides. An optical input limiter automatically protects the system from dangerous peaks.

The K-Array KA7-7's most intriguing feature is, without a doubt, the built-in DSP input processing. The eDSP software installs on your Windows PC from the included CD-ROM and connects to the amplifier via USB or RS485. eDSP boasts real-time controls for EQ, dynamics, and signal level. The software's 4-band parametric equalizer is enough to manage a problem space, or just make simple sonic enhancements. The EQ, and a level control ranging from -infinity to +6dB, can be stereo-linked or controlled separately per input channel. The dual-channel compressor utilizes global settings for both input channels, providing dynamics control in addition to the amplifier's built-in limiter.

The KA7-7 by K-Array is designed for touring and installation applications in which a large amount of power and maximum flexibility are needed.

KA7-7 350-Watt Class D 4-Channel Power Amplifier with DSP Controls

  • Top quality components for outstanding performance
  • Compact design and high efficiency operation
  • Left, right, and 2 mono-summed channels
  • DSP onboard to drive all K-array products
  • Lightweight: less than 13 pounds
  • Optical limiter per channel
  • Electronically protected
  • Aluminum frame

Features

  • 4 Channels with 350W Each @ 4 Ohms
  • Powers Left & Right plus 2 Subwoofers
  • Onboard DSP w/ Real-Time Control via USB
  • Optical Limiters to Prevent Overload
  • Aluminum Frame & Top Quality Components
  • Remote controllable via USB or RS485
  • High Efficiency & Very Light Weight
  • Compact Design

Specifications

Outputs

  • Maximum Output Power
    • @ 4Ω: 350 W x4
    • @ 8Ω: 190 W x4
  • Connectors: 4-pin Speakon x2
  • Wiring 
    • Speakon 1: pin 1+,1- = CH1 pin 2+, 2- = CH3
    • Speakon 2: pin 1+,1- = CH2 pin 2+, 2- = CH4

Performance

  • Slew Rate: 30V/µS
  • S/N Ratio: > 113 dB/A
  • THD: < 0.005%
  • Input Impedances 
    • 20kΩ balanced
    • 10kΩ unbalanced
  • Gain: 32 dB
  • Output: Unbalanced to ground
  • Bandwidth: 3 Hz - 45 kHz
  • Damping Factor: 8Ω @ 100 Hz: > 1000
  • Protection 
    • Thermal Protection: Yes
    • Short circuit / overload: Yes
    • Clip limit, analog signal limit: Yes

Audio Input

  • Connectors 
    • Input: Balanced XLR-f x2
    • Link: Balanced XLR-m x2
  • Wiring: Pin1 = Ground / Pin2 = hot (+) / Pin3 = cold (-)

Software

  • Operating System: Windows XP / Vista / 7
  • System Requirements
    • CPU: 300 MHz or better
    • RAM: 128 MB required, 512 MB recommended

General

  • Remote Control Input: RJ45 / USB
  • Remote Control: RS485 / USB
  • Power Connector: PowerCon x2 (in/out)
  • AC Voltage Input Range: 90 - 260VAC 50-60 Hz with PFC (auto range)
  • Nominal Voltage: 140VA
  • Maximum Input Voltage: 265VAC
  • Power Factor: 1/2 max out @ 8Ω: 0.97
  • Minimum Required Voltage: 70 VAC
  • Dimensions (W x H x D): 7.87 × 3.5 × 10.63" (20 × 8.8 × 27 cm)
  • Weight: 12.13 lbs (5.5 kg)