The fact that the receivers sound worse is another stereotype, although there are many cases, which is actually the case, if the power amplifier is a solid construction based on transistors supported by an efficient power supply, the addition of a DD and DPL tuner and decoder does not really change the sound much, so if the cinema receiver has a Direct input, you can safely use it as a stereo amplifier. The long path of the signal proves the minus of the receivers, so it is necessary to check if there is a direct input so that the signal does not wander after a kilometer of paths and integrated circuits.
Sure it is, but if we are talking about a stereo receiver. In the case of KD you have more channels, so more transistors, bigger heat sinks etc. It's easy to calculate that for the same money a KD receiver will be much worse than a stereo one.
and credibility in magazines for audio lovers
I have long stopped. One of them raised the Pylon Pearl to the skies and rode Tonsile with the ground, which were built on the same speakers, packed in the same package and with similar filtration. But he smeared Jujka and Wieszczeciński did not.
tonsil maestro s ii 180
Do you have little bass from them? Buy a subwoofer. When replacing the speakers, you will improve the treble and midrange. Basu not. Unless you buy some cheesy loudspeakers with boosted bass, but what for?
The subwoofer will give you bass without spoiling the rest of the bandwidth.
In 30 meters, you can already do something. For now, try repositioning the columns themselves. Start by checking to see if you have more bass in the corners of the room than at the listening position. If so, it may turn out that the speakers are fed up with bass, but their setting cuts it out. Sometimes even adding a subwoofer does not significantly improve the low bass, but it will add an unpleasant kick that drowns out the rest of the frequency range.