We have a pair of ATC SCM 50 SL AT speakers for sale.  They are active with 200W amplifier on board.

They are brand new; we only opened the box to inspect the color - Rosewood.

Here are some features:

• ATC SM-150 s Soft Dome Mid driver.
• Latest 234mm SL Spec Bass driver.
• Massive ATC motor assembly.
• Wide dispersion and perfect imaging.
• 350 watt Class A (to 2/3 max power) Tri-amplifier.
• Active filters and overload protection.
• 6 year warranty.
• Also available in passive version
• Any veneer to order. Featured veneer: Rosewood.

Specifications

Drivers :
HF 25mm Neodymium, Mid 75mm ATC Soft Dome, LF 243mm SL
Frequency Response (±2dB) :
70Hz–17kHz
Frequency Response (±6dB) :
38Hz–22kHz
Matched Response :
±0.5dB
Dispersion :
±80° Coherent Horizontal, ±10° Coherent Vertical
Max SPL :
112dB
Crossover Frequencies :
380Hz & 3.5kHz
Connectors :
Male XLR
Filters :
All active
Amplifier Output :
200w LF, 100w Mid, 50w HF
Cabinet Dimensions (HxWxD) :
1003x304x470mm
Weight :
53.3kg