The bevel on the back panel has a Boston Acoustics look to it, but I don't think they are BA's. You can see the 4 staples that held the "tag" on the back.
If interested I found out they are GRAFYX sp8Is that what it was reminding me of? As soon as I saw that bevel, I was like, "Man, that looks so familiar." I was thinking Sterling, or one of the mid-level regional audio offerings that I've seen in thrifts before... maybe even BIC, but I couldn't put my finger on it. But, man, that bevel on the back is something I've definitely seen before.