Abdou,
This changes things a bit. I've heard the S.A.P speakers many years ago and they do sound very good. Looks like you are looking for a presentation that is a bit forward and basically 'in your face'. The Welborne DRD will move you a bit in that direction. My last pair of amps were a pair of Welborne DRDs (2A3 version). The sound you are looking for is a matter of taste so you may have to search a bit. Even among very good horn speakers, not all of them will suit your needs or tastes.
I guess my best advice is to do a bit of looking around and learn what is possible with horn speakers. I'm a firm believer in horn speakers so I think it is worth the effort. However, horns don't work in all situations. If space is a real concern then a backloaded Fostex might also do the trick although those rarely have the big scale of a larger front loaded horn system.
Since you like the S.A.P. so much, I have this idea. The big S.A.P. speaker (the one that costs $20 K) basically uses a horn mid/high with a dynamic bass cabinet reinforced with a supertweeter. This is a common horn set-up. They use an Onken style bass cabinet with a wood mid horn and a bullet supertweeter. You might want to do a bit of research on Onken (Jensen) bass cabinets [http://www.studiomaudio.info/onken.html]. One can find DIY tons of plans for the Onken cabinets since they are very popular in Japan. With a little woodworking skill, you can make your own S.A.P. clone. Unfortunately, commercial designs like the S.A.P. are all going to be very expensive. There are actually a lot of commercial designs similar to the S.A.P. in Asia and Europe. There is someone on Audiogon selling a Onken based horn speaker right now.
This changes things a bit. I've heard the S.A.P speakers many years ago and they do sound very good. Looks like you are looking for a presentation that is a bit forward and basically 'in your face'. The Welborne DRD will move you a bit in that direction. My last pair of amps were a pair of Welborne DRDs (2A3 version). The sound you are looking for is a matter of taste so you may have to search a bit. Even among very good horn speakers, not all of them will suit your needs or tastes.
I guess my best advice is to do a bit of looking around and learn what is possible with horn speakers. I'm a firm believer in horn speakers so I think it is worth the effort. However, horns don't work in all situations. If space is a real concern then a backloaded Fostex might also do the trick although those rarely have the big scale of a larger front loaded horn system.
Since you like the S.A.P. so much, I have this idea. The big S.A.P. speaker (the one that costs $20 K) basically uses a horn mid/high with a dynamic bass cabinet reinforced with a supertweeter. This is a common horn set-up. They use an Onken style bass cabinet with a wood mid horn and a bullet supertweeter. You might want to do a bit of research on Onken (Jensen) bass cabinets [http://www.studiomaudio.info/onken.html]. One can find DIY tons of plans for the Onken cabinets since they are very popular in Japan. With a little woodworking skill, you can make your own S.A.P. clone. Unfortunately, commercial designs like the S.A.P. are all going to be very expensive. There are actually a lot of commercial designs similar to the S.A.P. in Asia and Europe. There is someone on Audiogon selling a Onken based horn speaker right now.