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I’m thinking I’ve never mentioned on this board that the listening room I’ve used for the past 16 years is 21’ X 17 ½’ X  8’. It has three large openings into a very large house, including a long, wide hallway and successive open rooms. This means The Loudspeakers have a big job to do in order to charge this room. My strategy so far has been plenty of amplifier power, and sitting close to the speakers, which I have well out in the room, over 7’ from the front wall. The sound I am after at this time is the sound that charges the room and “appears” spread out behind the front wall, loading into the room from there. There is little to nothing in the way of standing waves, and I am amazed to get plenty of HF from my horns with the speakers slightly toed out. Orchestras can be very powerful, depending on how they are mic’d, and well recorded solos and ensembles sound and feel like that, according to the production. As far as the drivers go, these are not high directivity, quite the contrary, so they lose those benefits but gain in terms of room loading. Between the 18” and the 10” direct drivers and the M/HF compression driver with its very short, fast horn, these speakers really do seem to charge the air, itself at all frequencies. I am surprised and pleased that the Visaton UHF horn also, somehow, gets its contribution into the mix off axis. I will say, as I have opined before, that there is such a thing as too big for a listening room, and I feel like I am right at the limits of what I can use with these speakers and my present amps. While there seems to be plenty of electrical and mechanical power for more volume, I think I would have to do something to contain the sound to keep the air charged if this room were any bigger. I would also say that a smaller room would be fine with these speakers, and one might then use smaller amps for MF and HF, although I stick to my previous observations regarding LF and amp power: Even in a smaller room it takes big drivers and big power to get orchestral LF.>>

Paul S

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