IMHO, the FV15HP and the PB12Plus are in the same league and u cannot go wrong with either.

I think if its the outgoing PB-12 NSD or the newer PB12 NSD (new sledge AMPs) are better to be pitted against the smaller FV12 that will be closer to each other.

No, the different manufacturers use it to provide tuning options.

Shuto,

While I do not think it will be as powerful as the Sub25, how about the Rythmik D15SE?

Its a downfiring sub. Its shd be similar to the F15 sound but might yield some increase in SPL if the floor is concrete and coupled with a corner loaded as its firing essentially into a true corner boundary. However, I am not too sure if the increase is significant.

Also not to be ruled out would be the upcoming SVS SB16 and JL Audios very own Gotham! And the Seatons with the newer finishes.

This post has been edited by anfieldude: Feb 8 2011, 07:41 PM

Hey, I have stereo subwoofers! IMHO, its nice to have, but well setup one does its job for music well enuf.

Seaton is a true ID company. The group buy in Australia was a massie order, so he needed to prepare the large order. He also fitted them with refurbished 1000W amps that US owners upgraded to 2400W amps.

ronnt has the submersive and its a fine performer.

There is a sale on older submersives now, u can contact them for more info.

I saw this excellent chart that shows the various instruments and their frequency ranges. This helps to re-iterate why music does not have much below 20Hz. But movies are mixed differently and there is a lot of effects that have content down low. I initially saw this in the AVS Forum, the link takes u to the original source.

Frequency Range of Various Musical Instruments

If u see their FR chart, it does not match what they are saying -3dB at 12Hz....

Yeah, that's what Imeant, weird that they claim 12Hz but do not show it.

I've seen this numerous times. I find it more of a problem with sealed subs due to Audyssey not getting the -3dB point of the sub accurately and trying to boost in the low frequency.

I hv seen +9dB boost at 10Hz using the F15s. Can u imagine the amount of power required to drive that if the signal is 105dB or more! Also the F15s do not hv limiter circuits, so I hv triggered protection (DC) on the F15s before. Now that the circuit is modified, the amps do just fine. Even subs with limiters can hv problems.

Its either an overexcursion of the driver, or high current that triggers.

I tried the same with the vol at -8dB on the AVR, C weight and fast on SPL meter.

FotP plane barrel roll - 112.3dB (max)

Not bad for 2 sealed subs in a semi open environment!

No audible distortions from any of the speakers....felt like the walls were crumbling from the effects that were reproduced quite well! Still - this is an insane scene.

If u don't mind could u let us know if ur unhappy with the sub?

Cool...way to go...Just understand that higher end or not, u need to understand the differences between sealed/ported...

FV15HP, PB13U are extremely good ported subs in my opinion for the price, they are really hard to beat. Multiples of sealed subs are the ones that can come close, but in terms of sheer power, these 2 are hard to beat...

It acts as a riser...but I'm not really sure how it changes the waveforms as the wavelength of the bass is still the same. Standing waves will still remain, but I believe it improves decoupling or adds some boundary to the reflection off the floor. I need check the physics behind adding a riser to a waveform.

U could use rubber studs that u can pick up from the hardware shop. The idea is to isolate/decouple the sub from floor so that the energy is not transfered directly to the floor.

paskal,

Which model?

BTW: I checked the refresh rate of the C6500 plasma and its 60Hz.

I thought it was a processor. if it indeed just the pre at that price its very good