As I promised earlier, a review by A. A. BOKOVIKOV and V. A. KATKOV
(Teachers of musical sound engineering at "The Ural State Conservatory in the name of M. P. Musorgskiy»
https://uralconsv.org/english-version )
After listening to the PLK Wagner system we would like to point out a number of either positive and negative points:
For advantages, we would like to accentuate on fairly fast focused bass without a hint of «reflex slur», that is quite a difficult task taking into account such dimensions of the speaker and the whole cabinets. These features of the low-frequency part of the spectrum have a positive effect in conditions of a non-ideal listening room. The cabinet design as a whole does not give any audible artifacts and overtones.
Besides, as an absolute advantage, the choice of coaxial design of the two-way system should be noted. This allows you to get a fairly flat phase response in the entire range of work. We liked the good, clear and fast testing of transients, which, when using a fast and neutral studio amplifier, makes the system close in its sound to the studio far-field monitoring systems.
In general, the system is critical to the acoustic design of the room and its location in it. It should be understood that the system of such dimensions and design will not sound correct in the rooms with low ceilings and an area of less than 30 square meters. Also, if the room is not sufficiently prepared, such features as absence of clear phantom center and significant loss of clarity of the sound stage may manifest themselves while the listener is moving around the room.
It should be noted that after listening to the system with several amplifiers, their significant influence on the character of the whole system sound was found out. The system requires careful choice of the amplifier for the aesthetics and needs of a particular listener.