Busted, another nail in the coffin for 'high-end' audio..

[IBSTORMIN]

The JBL Northridge is no longer in production but uses a titanium tweeter and poly mid and woofer. It has a front firing port which I have never liked on any speaker. Their ES series still in production sounds better. I compared them when they were both on the market and bought their ES outdoor speakers instead of the Northridge. Probably better bracing and crossovers, maybe an advance driver that looks the same. Not sure. I know they make a pure titamium tweeter and a laminate titanium tweeter that look identical but sound different.
The Infinity Beta uses Ceramic Metal Matrix Diaphrams (C.M.M.D.) throghout. It has a rear-firing port which if you must have one, I prefer rear-firing. I like speakers without woofer ports best because the bass sounds more natural instead of boomy, but they port them for the masses for the impact/thump.
The Revel Concerta uses Organic Ceramic Composite drivers throughout (O.C.C.) and looks just like the CMMD. Maybe they use more exotic materials than the Infinity, maybe not. Heavier so it probably has better bracing and crossovers. Again a rear firing port.

[Ajani]

The JBL Northridge is no longer in production but uses a titanium tweeter and poly mid and woofer. It has a front firing port which I have never liked on any speaker. Their ES series still in production sounds better. I compared them when they were both on the market and bought their ES outdoor speakers instead of the Northridge. Probably better bracing and crossovers, maybe an advance driver that looks the same. Not sure. I know they make a pure titamium tweeter and a laminate titanium tweeter that look identical but sound different.
The Infinity Beta uses Ceramic Metal Matrix Diaphrams (C.M.M.D.) throghout. It has a rear-firing port which if you must have one, I prefer rear-firing. I like speakers without woofer ports best because the bass sounds more natural instead of boomy, but they port them for the masses for the impact/thump.
The Revel Concerta uses Organic Ceramic Composite drivers throughout (O.C.C.) and looks just like the CMMD. Maybe they use more exotic materials than the Infinity, maybe not. Heavier so it probably has better bracing and crossovers. Again a rear firing port.

I probably should have made it clearer that I was saying the speakers used the same material from woofer to tweeter and not that all 3 speakers use the exact same material... the Revel and Infinity drivers are especially similar... Different names though for the material... But despite the similarities, reviews indicate that the 3 models sound different... so there are probably many differences internally... it's just that the Harmon group shares design and parts across their product lines (nothing actually wrong with that)...