Usually speakers from the same make/model line are timbre matched pretty closed, and often use the same tweeter, which helps.
Quote:
Originally Posted by iron-marshal /t/1519164/jbl-es-80-as-center-channel#post_24391806
I've currently got a set of JBL ES 20's that I use as left and right front speakers with an ES 25C center channel. Can I replace the 25C with an ES 80 or will it be too different from the ES 20's to make for smooth panning? Of course it will be behind an AT screen.
Quote:
Originally Posted by zieglj01 /t/1519164/jbl-es-80-as-center-channel#post_24393371
Go with 3 ea ES-80 across the front.
http://www.amazon.com/JBL-ES80BK-3-Way-Floorstanding-Speaker/dp/B00166ZFXO/ref=sr_1_2?ie=UTF8&qid=1393081235&sr=8-2&keywords=jbl+es80
Use the ES-20 as the surrounds.