QUOTE(ronnt88 @ Jul 28 2010, 09:19 AM)
bro anfield... have u decided which to switch to ?

bro,
If u've got the time, drop by....check out the F15.
The last couple of days (actually from Saturday last week), I've been mucking around with the Rythmik F15.
Most of u who know me and hv been to my home, will know that I am an audio 1st guy. I currently own a Dali Ikon Sub (12in driver) that seemed to do the job well in my room, went down to about 26Hz. Probably at high SPL scenes, it could go to about 100dB but it was always strained. I have auditioned the Rythmik in the owners home before and at that time, was convinced that it was either a room problem or a sub problem. Subsequently, I listened to PB13U (was absolutely floored by the punch), Seaton Sub (my personal favourite due to its ability to handle music and movies with relative ease, the one complaint I had to the owner was that his sub was outperforming the rest of his gear!), the Velo DD12 (also powerful but not near the PB13U) and all of them in this range seem good. I am pretty sure by pierreye's current impression the eD650 seems to trump his DD12 easily so its another one of those damn good subs...
My current Ikon Sub has overhang, that's one thing I do not like when integrated to my current fronts. The Ikon6s go pretty low (rated at 37Hz) but paired with a sub, for orchestral pieces and even music, its even better. Being a 6 1/2in driver of course it does not do low frequencies that well but its rated low anyway.
So when I actually plonked the F15 by simply removing the IkonSub, (did not redo the Audyssey), the improvement over the smaller sub was clearly evident. The older AS-EQ1 curve was set to cutoff everything at 26Hz due to the older sub. All I did was to adjust the trims to bring the levels matched, and even then the difference was clear. I later re-did the EQ1 with 1 in 2 out combo and set the F15 to 20Hz mode. The curve post EQ1 was pretty spot on and the cutoff was set at 18Hz or so. I did not do REW or enable the PEQ on the F15. I believe for my 2 channel listening this will improve the effect much more. Some of my reference CDs for bass response do seem much better. Also I can listen at lower volumes and still get the low end to show. So after all this, I watched some of the normal scenes to check the overall bass response for movies.
Boy, was there a difference! My room is untreated, so I already know that there will be a decay problem. Maybe this weekend I will run the REW curves and see how it looks.
The normal movie scenes that has been recommended by all, Batman, WOTW, KungFu Panda was all so much better compared to my older sub. All this was not at reference levels. Since my room is untreated, I normally listen to -5 to -10dB below reference, at the impact was really big! The sub seemed to dig deeper (of course) and the impact was visceral as well. The kick in the chest was evident on some of the scenes. I will write more of my impressions later.
So the moral of the story, for all those contemplating for a sub and u r the kind who wants to enhance ur viewing experience, go out there and spend on a good sub. All the subs above are good. Of course, with htkaki selling SVS here locally in Malaysia, it makes it that much easier in not having to import the sub urself and also with the addition of the new SB13, u can get the sealed in big bad a** sound! I also know how capable the PB13U is as I have felt it in the demo room and its one big bad sub! Certainly give it a try if u r looking for a big sub.
I am definately going to continue to play with this sub to see how I can further integrate it into my 2 channel stereo as there are still knobs on the bugger (phase, PEQ, damping and rumble filters) to see if I can improve on it.