Experience with stacked subwoofers?

@hifidream    Do you know of a published manufacturer frequency response ( ex. -xdB@xxHz ) measurement for Kinergetics SW-800's?

I get led to an SW-800 User Manual residing at Hifiengine but I'm unable to log in.

@dwette 

 how’s the dialling in process coming along? Are you up to subs 5 and 6 yet?

 Is your description of the experience of adding subs 3&4 similar to what REL and others describe in terms of increased attack?

Hi @guysellingstuff 

Yes, I have the first four pretty nicely dialed in. Foundational bass sounds great, and the mid bass attack and response are much improved. The soundstage has improved considerably, and is more three-dimensional. I can especially hear that when playing large scale orchestra music.

I'm still waiting on the third pair from my dealer. They are their last demo pair, but an amp was damaged and they have ordered a replacement from REL. As soon as I get them I will add them to the stack and work on dialing them in and fine tuning the final array.

I had been thinking about doing this for a long time but didn't want to spend the money at retail cost, so I'm glad I was able to get two pair of the dealer's demo array.

Nice!

sorry for all the questions but how have you positioned them relative to your speakers? 

Have you put them in the corners of the room or next to the speakers on the in/outside? In my research I’ve seen that the location seems to vary from what rel recommends in their line array setup video

My room is a bit of a challenge with it's smallish (11' x 17') size. I have the speakers a bit closer to the side walls than they should be, but that's to get them 8' apart for a bigger, broader soundstage. The subs are just to the inside of the speakers. REL recommends them to the outside, but say inside also works if there are space constraints. Despite the challenges it all sounds great....better than I would have thought otherwise.

My wife and I plan to move the whole thing to our living room, which is 13.5' x 22', and 1/2' taller (8.5' vs 8'). That should give it all more room to breath and allow positioning the subs to the outside of the speakers. We have some logistic things to work out first though (e.g. turntable isolation).