The Student Center at my college used to have one of those in a computer lab on the ground floor. But in early 2009 it was replaced with a Faraday U-MMT, and then in 2014-2015 the whole area was renovated and had SpectrAlert Advances installed.

My favorite thing about the SpectrAlert classic series is when the current draw is 12/24 volts FWR (Full-Wave Rectified) the horn shifts pitch (in the temoral setting is dropped slightly lower than a Wheelock NS [except every possible model of the P1224MC]) and sounds distorted and raspy almost sounding like a Wheelock NS, ZNS, & Exceeder. Is that something you are fully aware of???

My favorite thing about the SpectrAlert classic series is when it the current draw is 12 or 24 volts FWR (Full-Wave Rectified Current Unfiltered) the horn shifts pitch (in the case when it is set to the code-3 setting via jumpers or DIP switches depending on the model pitch is dropped slightly lower than a Wheelock NS, ZNS, and Exceeder series [except any possible model of the P1224MC]) and sounds raspy and distorted almost sounding like a Wheelock NS, ZNS, & Exceeder series. Is that something you are truly aware of??

Interesting. The Student Center at my college has a Notifier AFP-200 panel that puts out FWR, so I'd assume that former SpectrAlert Classic sounded something like that.