you can always safely connect the speakers in series creating a 16 Ohm load.
Not advisable though if it happens to be a tube amp. Running a tube output stage with higher than specified load can result in increased dissipation in the tubes.
I know what you mean. I wouldn't consider it if my F-81 STAX Electrostatic speakers didn't "arc out" last year. Some connections to the sound panels suddenly began to sizzle while producing bright purple arcs. That was the strangest (and saddest) thing I've seen for a while. Glad it didn't hurt my Sunfire. I wish I could find repair info for them. They were built in Germany.