After having listened to some ported vs sealed subs I think ported subs have better performance/value ratio for HT use. For HT use I think slam and impact are key to a fun HT experience. Yes, you can get that also with sealed subs but you'd need to spend more relatively. In terms of output I don't think the SB13 will outdo the PB13. To have higher output maybe the SB16 will do, but the price for that is

This post has been edited by jchong: Jun 27 2010, 08:38 PM

Was he referring to F113?

Glad to know your poison is expanding. Good for biz.

Which one is that?

Hey max, what's the tuning freq of the PB13?

Yeah, I thought you were referring to the Submersive Based on my brief listening of it and the PB13, the feel is different. However, I've come to learn that placement and room interaction is very important and can greatly affect how a sub sounds.

From all accounts PB13 in sealed mode loses a lot of output and won't be close to the Submersive. Of course having 2 would be a diff story, not only in terms of output but also bass smoothing.

Hey, anybody here used a PB13 with a Auralex Gramma pad before?

Very true. I've listened to same sub in diff rooms and the sound can be quite different. Sometimes I wonder "Eh same sub ah? Why sound so different here?". Must be the placement and setting up.

Only thing with something like the PB13, because it's so big the placement options are more limited (unless you have a big room).

Great. I'll be experimenting with the Gramma this weekend. Not looking forwarding to lifting that PB13 and moving it around But I'll be looking forward to the results!

You mean in your room not many choices for sub placement?

Dual sub tryout...

Experimented with dual sub setup today. I had previously run Audyssey with the PB13, but I just wanted to do a quick and easy dual sub experiment so I used a Y-splitter and hooked up the F15 as well. Unfortunately I don't have a SPL meter now so both subs are not level matched. And the F15 has also not been EQ'd by Audyssey (but the PB13 is).

First impression is there's a lot more bass (too much actually). Naturally since adding a sub would give you 3-6 dB boost. So then I turned down the sub trim by -4 dB. Ah much better now - a more balanced level. My first observation is that the bass is more evenly spread through the room. Previously with the single PB13, there was less bass to the left of the center and more bass to the right. This is after running Audyssey. So bass distribution was uneven. With 2 subs the distribution was better, still not exactly even throughout but better.

I also noticed more mid bass impact - more of that 'hit you in the chest' feeling. Using the skidoosh scene in KFP the pressure waves are more felt, more enveloping (compared to single PB13). So preliminary impression is that 2 subs are an improvement.

I'm sure you'll be able to tryout 7.2 one day!

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Added on July 2, 2010, 8:06 amGive me a sms. I'll be in and out this weekend but I think a time can be arranged.

This post has been edited by jchong: Jul 2 2010, 08:06 AM

Either that or we start going 7.3, 7.4 like those fellas in the States...

Yeah for multisubs there are some who suggest asymmetric placement.

In any case it's a fun experiment. 4 subs should be excellent.

Going dual... one sealed and one ported?

+1

Yours is the only dedicated sub showcase at KLIAV right?

Let's hope I can make it this year. Missed it for a few years already.

Nice stuff to be displayed. Ok, will let you know next week if I can make it or not.

Wow, looks like Avalons driven by Spectral. Mucho dinero...

Most subs have their own volume control, including the PB12-NSD.

I think he wants funds for upgrade purpose

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Added on July 22, 2010, 12:28 pmpierreye, can u post the REW graph for your sub's raw freq response (meaning no Audyssey or EQ on). Best if you can bypass AVR completely and hook up the REW to your ED.

I did some charts for my sub (in 3 diff positions in the room):



None are ideal and show a dip in the mid-bass region. Still have to experiment with some more placing options.

This post has been edited by jchong: Jul 22 2010, 12:28 PM

Thanks for the charts. I'll try to redo the graph at 75 dB later this weekend.