About the Ruby 4
The Robertson Audio Ruby 4 is part of the Ruby Performance line of speakers, designed for audiophiles seeking superior sound quality and advanced technology. It features a nominal impedance of 4 Ohms and uses copper wire for the voice coil winding. The speaker has an effective radiation area of 144 cm² and can handle power up to 200 W with a high-pass filter at 18dB/octave at 160 Hz. The Ruby Performance speakers offer a modular platform for extensive customization, including advanced tuning options such as OverBoost kits that add an additional magnet and magnetic line concentrator to optimize sound output. The design includes a new frame that improves cooling and structural stability, enhancing both performance and durability.
Specifications
Key Specifications
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