The horns in the 4700 are crossed at 800 and 12khz.
In a small room, 800hz compression horn is too much IMO and needs to be crossed higher to get rid of that overwhelming midrange.
15’s beam above 800, (which is why they are crossed at 800, so in a big room off axis above 800hz fall off is sever with a 15 inch driver but in a small room it doesn’t matter, as you likely can’t get that far off axis, you’re sitting directly in the beam. This also keeps wall reflections above 800 Hz out of your ear, clarity... where a wide dispersion compression horn is bouncing all over the walls, eww!
I personally have a set of Mr925’s which i ditched the internal passive and actively crossed over with a dbx drive rack, i’ve spent a lot of time experimenting with different crossovers and different slopes with this set up, 925s are known for extremely nasally mid range, and with the stock passive filters they definitely are. I recently moved, have them in a room 3x smaller, The speakers are designed to throw so this issue needed to be addressed. This is when I decided to bi amp the 925’s
Confirmed by an rta my 15 inch Jbl2232h plays fairly up high, around 4khz with no eq playing pink noise. I set the 24 db BW at 5K (gives a boost at cross over compared to other filter slopes, helps the 15 above 4k)between the 15 and the compression driver, suprise it sounds better, much better. The horn no longer overwhelms the midrange, no reflections from wide dispersion, and it seems to clear up the top end. Not having a cross right in the vocal range gives speech a more natural sound. I find I don’t have to change EQ settings for different program material. I was extremely surprised the 15s would take the 5K cross but I now think I understand why it works.
In a larger room this doesn’t work well, and you need efficiency of the horn, also the 15 beaming issue above 800 becomes very noticeable when moving around the room.
So basically what I’m trying to say is if you were in a small room, the compression drivers are too much. They’re designed to be used in larger rooms. And if you’re going to put them in a small room raising the crossover above 3500 helps immensely I found 5K sounded the best.
Over 5,000 watts of power in a small room is really fun! 2x18’s in 20sqft @30hz with 3600watts is awesome! Also 450x2 to the 15’s and 280x2 to each compression driver. Especially with movies! Your soul vibrates.
Also, I find adjusting the crossover as much as possible to get the sound you want, and you’d be surprised how little EQ you need. I know my example is with a different set of speakers, But I believe many of the principles are the same