Hai,
Pleased to note that you had found one among the best class amp. I am using the same for the past 23 years...without any problem till date.
Originally philips released the matching speakers DH915 for this amp. No doubt, it is a perfect match for a room size of 20' x 20'. I do have this of course. But now both these are outdated.
I have a pair of 6 feet high box, which contains 1 x 15 inch woofer, 2 x 12 inch woofers from Bolton and one Ahuja Dome tweeter. It has been fixed on the walls.
Hope this is ok.
Regards,
vetri