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Awesome stuff from Kaj too! Keep up the great stuff guys! Bring em on. Is anyone going to do Flight of the Phoenix? :)

Beautiful stuff there, Ilkka! Impressed with your charts! With more like minded people doing them charts, we could probably have the world's most comprehensive collection of demo material. Keep them coming, Ilkka! :emoji_thumbsup: :emoji_thumbsup:

I've got dual PC+'es in a room almost equal in size to yours. Are they overkill? Heck, I'm thinking of upgrading to dual PCUs. ;)

Hmmmm, that scenes appears to be quite popular as a test scene. I will try to do that too.

I don't have incredibles yet, but as soon as I get hold of it, plots are only a matter of time. :)

I will be doing one for Resident Evil 2, AVP, incredibles and sky captain. It will take some time as I foresee myself a bit tied up for the next 4 weeks, but will not dissappoint. Stay tuned.

The only advantage I can see with this new BFD is the possibility of center channel EQ-ing.

Teaching the amp to sing like a pig definately isn't good for the amp. It wastes time and it definately annoys the amp .:b

SVS's port tuning is actually a great feature, despite it cutting SPL levels. Was just looking thru some of my old measurements. This is a THD measurement of about 90dBC.

In room responses will vary from room to room, but lower tune modes should still be apparent in the same room, shouldn't it? In this 16-46+ in-room response, the lower port tuning did take a huge hit in the SPLs overall, although a bit more extension gain. 12hz is probably too extreme low...

yeah, thats what I mean....... Tight to different people take on different meanings.

Bass sounds "tighter"? Care to elaborate "tighter"?

When I used to have my PS-1000, I found that blocking 1 port appealed to my ears. It may not be necessarily better, it appealed to me. You could try blocking 2 ports too, but not all 3 ports for obvious reasons. But the PS-1000, being a bandpass subwoofer design could be naturally boomy...

You should get interesting results from the BFD. I used to have the same PS-1000 but I felt is was boomy on its own..... but try to sock the sub. Sometimes helps to curb the boom.

Teh DSP8024 and the DEQ2496 are autoEQ devices, but they are based on 1/3oct autoEQ for the graphical EQ. Not very useful in the LFE region because 1/3 oct is too coarse for any useful EQing for bass. PEQ is a better EQ for bass fequencies because certain bass peaks can be much much narrower...

I've charted out 2 plots on Day after tomorrow, 2 of the best bass scenes. But do holler if you find more scenes in that movie worth a plot.

I will have to sit thru spiderman2 again. I watched last month during the night. In order not to disturb anyone, I had to activate the mid-night mode and that might have severely restricted the LFE dynamic range. I'll catch spiderman 2 again soon. Thanks for the heads-up.

Just done with i,Robot! The bass on this DVD rocks! This is the "You are experiencing a car accident" chapter. Do becareful with your amp's master volume for this scene. If it doesn't dig as far as bottoming out your sub, it will most likely rattle everything in your room that can...

I just picked up this mag....... have not read it yet, but in the line up are 1) Codrive CB1 2)Snell ICS sub24 3) Triad inroom platinium 4) Velodyne DD18 Will read it tonight.

I have 2 16-46PC+ in my 12x11x8ft room. I could use a third one, coz I'm only clocking my LFE at 115dBC at 6% THD for a 20hz tone. Thats not good enough! :b

The very sad fact is that many people don't understand that music is made up of many spectral components. And some are even worse that they refuse to understand the basics of what they are hearing.

Most 95% of houses in singapore have concrete all-parallel walls in the rooms. Concrete, parallel and rectangular rarely make a good combo where bass is concerned. Since concrete walls do not absorb bass energy and largely reflects them back, the interaction of the sound waves will construtively...

Can someone actually measure the freq response and time decay of a "fast" sub and a "slow" one in the same room? If someone can do both, then at least this discussion can actually be informative. Without these, there's really isn't much to discuss at all.

Don't see it now. Could you post the graph of the subs alone, mains alone and the sub+mains superimposed on the same graph? Its easier to see things this way sometimes.

The free way is to adjust the x-over on the sub to a lower value. At 80Hz, it may be the case that both the subs and mains are active at the same time and they are reinforcing each other (thats probably why 80hz is approx 6dB higher) Maybe try crossing over at 60hz or 70hz and things may...

Wayne, I helped oliver measure and dial in his sub+bfd a couple of weeks back. (Measured with a ECM8000/mic-pre/truerta, using sweep and pink noise.) IMO, I measured his listening spot and found out that there was a suck-out of about 60hz-75hz; 15dB down from average. But this suck out...

I'm glad the screenshots are a welcomed addition. I'll add them in all future waterfall plots. I just did a waterfall plot of Telarc's 1812 overture from they hybrid SACD. Looking from the redbook layer, the cannon shots trail off to about 5hz. Ok, here goes:

Underwater collision The charts show that this scene is as powerful as the opening credits. I'd say that this scene will appear more impressive on most subs that can't dig deep but can growl loud. When the ship hits the bus, lotsa bass everywhere from 10hz to 80hz. Gonna be loud!

Ok, guys, both scenes are up. Opening Credits Ok, this is an exceptionally long waterfall. I wanted to include in as much of the deep stuff as possible. Most of the rumbles in this opening credits have much energy centered around 20hz. Yet still have healty extension down to single...

I'll try to plot these 3 scenes over the weekend.