K-Array KTL22 Speaker and Light
Sep 14, 2011 4:00 PM, by John McJunkin
A clever combination provides an all-in-one architectural solution.
The KA7 amplifier is housed in a 2RU/half-rack enclosure so that multiple channels can be powered in just a few rack spaces. Its sparse burnished aluminum front panel features a power switch, cooling air intake, and LEDs to indicate power, ready, and signal presence and clipping for two input channels. The rear panel features the AC power inlet and passthrough, and powered audio outputs, all of which are Speakon connectors. Each of the amp’s two channels has XLR inputs and loop-through links, along with input pad gain knobs, ground lift buttons, and LEDs to indicate power on and limiting. Communications with other devices are accomplished via connections in the middle of the rear panel, including a USB jack, RS-485 remote jacks, and a 6-pin dipswitch to establish the address of that particular amp. The internal signal processing includes optical limiters and preset DSP to accommodate various K-Array speakers. Additionally, the amp can be controlled remotely and by computer software.
I had initially just sought to get a look at the KTL22, but it emerged that it was just a component of a larger, proprietary system, and I was quite pleased with the capabilities of the system overall. The lighting aspect of the system grants the user quite a bit of control and the capacity to nicely light spaces for various purposes. The system wouldn’t be used as a principal lighting system in a public space, but as for mood or effect lighting, it’s quite powerful. The combination of the lighting capacities with the excellent, high fidelity audio makes this system very useful, and it would impress those who experience it as unique and clever. The K-Array KTL22 and attendant system won’t be specified for a huge number of applications, but for those that do, it will have a lasting impact.
John McJunkin is the principal of Avalon Podcasting in Chandler, Ariz. He has consulted in the development of studios and installations and provides high-quality podcast production services.
- Company: K-Array
- Product: KTL22
- Pros: Great quality light and speaker; useful for artistic and effect applications
- Cons: None to speak of
- Applications: Paging and music, museums, art exhibits, architectural, theater Price: To come
- Max Power Handling: 30W
- Impedance: 32Ω
- Operating Frequency Range: 300Hz-18kHz ±3dB
- SPL (1W/1M): 87dB
- Maximum SPL: 101dB continuous, 107dB peak KTL22 Lighting
- Operating Voltage: 22-28VDC
- Maximum Power: 12W @ 24VDC KA7 Amplifier
- Maximum Power: 2 x 350W (@ 4Ω), 2 x 190W (@ 8Ω)
- Slew Rate 8Ω: 30V/μS
- S/N Ratio: >113dB/A
- THD: <0.005%
- Input Impedance: 20kΩ balanced, 10kΩ unbalanced
- Gain: 32dB
- Bandwidth: 3Hz-45kHz
- Damping Factor: >1000
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