Cheeze 'n crackers, y'all sure know how to make a guy feel old!
Back in the day of the great two-channel receiver dinosaurs, before the great FTC power specifications wars, and before the coming of sdigtal sound, the speakers of the day could generally be classified in either of two ways.
One, the "east coast sound" was characterised by a bump in the upper mid bass, a subdued mid-range and fairly reticint highs. This suited classical and light acoustic musicsince it closely approximatedthe soundone wouldfine in a"classical" venues such asa big, well-padded hall. Several speakers of that day that pioneered and offered this type of sound were Acoustic Researcs (AR) with their AR 3 and it's siblings, KLH with it's Models 5, 6 and others. Coincidentally, these were started in and around Boston. Ergo, it became called the "east coast" (or "new england") sound.
Now, on the other coast, companies like JBL and Altec were selling speakers that offered a punched up mid-range and high end. Since their roots were in movie theatre sound, this was a natural evolution. These were used extensively in the recording studios of the day and odds are that virtually any classic rock recordings you own were made using JBL monitors. As time went on, these became popular for home use and when JBL got wise to this, they released the JBL L-100, which became the poster boy for the "west coast" sound.
If you want an instant education in this, simply connect a pair of AR speakers of that era to your "A" speaker terminals and a pair of JBL speakers of the same era to your "B" speaker terminals and A/B to your hearts content.
Now, where's my ensure?
