I believe the original stands built for the BC1s and SP1/2s were to allow for the first floor wave off the driver, but most I have seen use taller stands to get the image up. I use 19" VCI stands with my new (used) SP1/2s, and my ears are precisely in line with the middle driver for IMO excellent balance and image height.
Speaker listening position higher than tweeter
I purchased Spendor Speakers 1/2E with speaker stands. The stands are pretty low. Even with the stands, the speakers tweeter is below my position on my bed in the bedroom. I believe these stands were recommended for these speakers. I am not the original owner. In any event, is getting a higher stand my only good option or can I put something under the stand to elevate them further?