Direct radiator subwoofer Dynacord SUB28

Dynacord SUB28 is a subwoofer equipped with two powerful Dynacord LFS 18700 drivers and designed for use as a subwoofer in active multi-way systems. The classic design with a vented direct driver guarantees excellent transient response and allows the SUB 28 to be used even in medium and large format bass arrays. The woofers use long excursion voice coils to ensure low distortion even at high power levels. The 100mm sandwich voice coils are highly durable and can withstand very high power peaks. The cabinet is equipped with an electronic Voice Coil Tracking Protection circuit, which detects the voltage at the transducer terminals and simulates the thermal behavior of the woofer voice coils. In the event of possible thermal overload, the power supplied to the speakers is reduced to a safe level. To obtain maximum dynamic range without the risk of thermal overload, very powerful amplifiers can be used in uncontrolled situations. Voice Coil Tracking Protection has smooth shifting characteristics so there are no annoying clicks or other noises. The circuit automatically resets once the voice coil temperature reaches a safe value. The SUB 28 body is made from 15mm birch plywood. All corner joints and brackets are grooved and glued. The surface of the body is painted with 2-K varnish. The powder-coated steel grille with protective acoustic foam on the back protects the LFS18700 from damage and harsh environmental conditions. The connector panel uses two 4-pole Speakon connectors (INPUT/THRU) for reliable connectivity and easy daisy-chaining with other cabinets. The sub is equipped with eight large rubber feet. Four handles ensure easy and safe transportation. For portable use, an optional four-caster wheel kit is available that can be screwed to the rear wall.

User manual