ALTEC　A7 （806A 416-8A 511B N501-8A） This is the voice of theater. Sensitivity is 100dB. This speaker was made for movie theater. This can be driven by tube single amp.
	ALTEC　A5 （288B 515B 311-90 N500） 288B driver is very  strong than A7. This speaker was designed for middle range mainly, especially vocal. you can try to listen to both our shop.