Axiom Home Page Forums General Discussion The Water Cooler Calling Jakeman...

Are you going to be ordering some EP400's to do another comparison chart of the EP400 EP500 and EP600 in different numbers?

I am curious to see what 4 EP400's would sound like in comparison to 3 EP500s. Also, 2 EP400's vs 1 EP600?

hmmmmmmm

Whadayathink?

Where is the original chart that jakeman created?

I think it was Craigsub that created the list, but Jakeman posted it, I could be wrong.

Yep. Craig posted it on avsforum around the time of the last subwoofer shootout, I think...

And he appears to have moved on to the super huge driver/enclosure subs.

I do believe that it was Jakeman that had 3 EP600's 2 EP500's in his theatre.

He did his own comparison chart as to what combinations are the best.

Craigsub did a sub shootout, which is different than an all Axiom sub comparison.

From Jakeman:

" There was a time not long ago when I had 3 EP600s and 2 EP 500s in my HT so I experimented with many combinations of these subs to come up with that list. The objective was not to find maximum output as I could easily have cracked the house foundations but to find the combination/placement that gave me uniform bass response anywhere in the HT regardless of seating position. Having satisfied my curiosity, I did finally bow to WAF and sold some of those subs. Here is a shot of four of them in the side/front HT using a pair each of 600s and 500s.

1. 4 EP600s
2. 3 EP600s, 1 EP500s
3. 2 EP600s, 2 EP500s
4. 1 EP600, 3 EP500s
5. 4 EP500s
6. 3 EP600s
7. 3 EP500s
8. 2 EP600s
9. 2 EP500s
10. 1 EP600
11. 1 EP500



I wonder where the 4 EP400's would fit into that list...

That's just insane.

he also mentioned the following:

"yes there is more output than anyone could ever want but that was not the objective. My inspiration for all those subs came from reading the Harman article on optimizing LF sounds in an HT and I decided to check it out for myself. Not that I don't trust technical articles but often it doesn't transalte into real world situations.

Output for the sake of max SPLs is a mugs game since good bass has to blend with the rest of the speakers. I configured those 4/5 subs in total to give 75db level matched so the subs were as loud as any one speaker. Where the benefit comes from multiple subs is more even FR anywhere in the room and also far lower THD and IMD so you get the cleanest sound possible in the most seats.

In my room, I found the most significant sonic benefit comes from having dual subs on opposing side walls and I recommend that for anyone's HT. After that, well it gets better with more subs but with diminishing returns.

Now if I can only fill in that crack on the outside of my basement foundation wall."

Since having 2 subs on opposite walls made the most difference, I am not sure having 4 EP400's would be worth it...

Holy Smoke! Maybe someone should have told him it is possible to just turn the volume up on the EP-600 instead of buying new ones!