Hi Frank,
wow 15", mine are only 8" and sound good.
Amazing the difference good speakers make.
I was running my SD1 & soundfonts thru a pair of smaller Yamaha powered monitor speakers, not a patch on the Tannoys.

best wishes
Originally posted by Frank L. Rosenthal:

The Tannoy are 15" studio speakers. Very good sound indeed. A bit to heavy to carry out on a job.
best wishes
Rikki 🧸

SX900, Kawai es920 piano Band in a Box 2021
V Arranger/Ketron SD2