Home > News & Blog > Long awaited floor-stander from Epos

Coming Soon is the new ES-28N is the third model in the current EPOS line-up, and on top of it, it’s a 3-way loudspeaker made by a designer who is well known for doing 2-way systems even with bigger woofers. So what did change his mind? 


Experience! It’s just that a 2-way system is not working so well in a configuration with two woofers. OK, there is the typical D’Appolito configuration with a woofer above or below a tweeter, but as the tweeter should be sitting around one metre, the speaker would end up as a huge tower. Mounting the woofers below the tweeter would need a so called 2.5-way configuration. In such a configuration, one of the two woofers stops working in the lower midband, and the second woofer covers the rest of the midband to connect to the tweeter. That sounds like a good idea, but unfortunately, the main radiation axis for those two woofers would be tilted downwards, so it is difficult to manage the mid-frequency energy properly. So why not make it 3-way? OK, that’s what we did. 

Epos ES-28N internal

Similar to ES-14N, the cabinet of ES-28N is slightly tilted to get better time alignment for the drivers. The two woofers sit in a Bass reflex compartment, carefully braced for low cabinet colouration. For the same reason, the whole cabinet is made from a sandwich construction with a layer of high-damping glue beside two MDF panels. The front plate is 50mm thick and made from two 10mm sandwich panels and a separate chambered MDF panel of 30mm. The midrange has its own compartment with a triangular backside to avoid reflections. The remaining part behind the tweeter takes the crossover, so the components are isolated from high sound pressure levels. The port tube opening is located on the bottom. That allows an eight-centimetre diameter port in a length that gives the lowest possible output of resonances from the cabinet and the highest maximum output of low frequencies. In addition, the port is equipped with pressure equalising holes in the middle to avoid the tube resonance of the port itself. The opening in the socket is big enough, so even in cases where the cabinet is standing on the floor without spikes, the bass performance is not compromised.