Further knowledge of the memory of Plainview Churchbells

After all these years of searching for the name of the churchbell system that was at the Plainview ny church, I just started to remember a few things. Within the main lobby, there was a framed plaque haning on the wall commemerating the donation of their new electronic churchbell system. I did manage to look at it before the church had been transformed to Yale Korean. It said something like "John-Dave as the name of the donator, and something like electronic or carillontronic magnabell or electrobell. I haven't been able to go back there, unless they have their Bazzarr during the summer.
The other thing I remember was I saw the device itself on one of the shelves of the booth I was sitting next to.  The devive was a long rectangular shape and had two pitograph symbols of ringing bells on the far bottom left. On the bottom right, it had the name of the company written on it. It was either Samsung, Sanyo, or Yamaha.
The bells were probably part of a sythesizer the emulated the bells, as  they sounded like they were struck by a mallot on a chime bar, and it was amplified, along with the other emulated bell sounds to play their music. Since then, they moved the devive upstairs and I haven't been able to go to the main lobby where the plaque is. That would explain it all, unless they took it down.  The only other possibility is having a closer look at the megaphones that are still mounted on the rooftop of the church. Maybe the company name is imprinted on the front somewhere, but it would  be difficult to see as the megaphones had been moved and point upwards instead of in all four directions.  Chances are the staff might get suspictious if I look around, but last time they allowed me, and I assumed the device was downstairs in a room. But after exploring their dark downstairs basement, I only saw their old electronic midi keyboard and sythesizer board that had the controlls to raise and lower the sound and tones, but it wasn't hooked up to anything. So maybe I'll have better luck after going to their next bizzare.