I think he means no other sub beats the PB12-NSD in the price range of 3K++

Ha-ha, that hobby also very good at sucking $$$. So what have you gotten? Fenix, Tiablo, Olight, Nitecore, Surefire??

Thanks to ckyongs and anfieldude for the informative charts. Wanna ask some questions.

I think the charts shown by ckyongs is generated by the EQ1 right? Whereas anfieldude is showing REW charts. Quite a bit of difference in the flatness of the graphs, the EQ1 charts are like ruler flat whereas REW shows some peaks and valleys still. How come? Is it because of no octave smoothing on the REW charts?

Thanks for the clarifications. I agree that smoothing shouldn't be used, then we get a much clearer picture of the freq response. Applying smoothing is like applying make up to make something look more beautiful

This post has been edited by jchong: Oct 26 2009, 12:59 PM

Glad you were able to test the JL F113. However, some of the conclusions you have reached are erroneous. The amp wattage alone does not tell the full story about how loud the sub can go. If Mr Kwan is giving you that impression then his info is misleading. The difference in bass perception is due to the different room. If you really want to do a shootout between 2 subs, test them in the same room then you will get the true picture.

Secondly the EQ1 doesn't only benefit SVS subs, it can benefit any sub. It is not a must to pair the SVS + EQ1 - please read up on the EQ1 and what it does before jumping to more erroneous conclusions.

Yup, the specs say 2500 watts RMS short-term, so I don't know where the shop got the figure of 3.6kW from.

Yes the F113 has a built in auto EQ, but I see it is only a single band EQ that is able "to eliminate the single largest acoustic room response peak at your listening seat." This is similar to the auto EQ found in the Velo CHT-Q series. It is certainly not as sophisticated as the EQ1 or other devices like the AntiMode.

I suppose the JL emphasizes sound quality over quantity.

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Added on October 27, 2009, 1:47 pmWe are also amused

This post has been edited by jchong: Oct 27 2009, 01:47 PM

Yes, sound quality includes the effect of the room. In fact some people say the room is the most important component of all...

That said, there are some things a room can do and some things it cannot do. Say you want tight, accurate bass. If you buy a boomy or looser type subwoofer can even the best room turn that into tight, accurate bass? I don't know but I suspect not. There was a thread on AVS discussing bass quality vs quantity and the thinking was if you have quality bass then you can always get more quantity by adding more of that subwoofer. However, if you start with a poorer quality subwoofer, it may have lots of quantity but even if you add more subs you only gain more quantity - you can never improve the quality. I tend to agree, but I also know the drawback to this approach is that it is likely to cost more.

I feel your frustration bro. To me, I think we should still try to share... there are many who are still receptive. Those who are not receptive, it's their loss. "Let those who have ears hear".

You mean upgrade?

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Added on November 5, 2009, 9:50 amYup, I received it the day after you sent in fine condition. Thanks!

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Added on November 5, 2009, 9:52 amNo, I received it for testing.

This post has been edited by jchong: Nov 5 2009, 09:52 AM

Haven't had a chance to try out yet since I'm now outstation. I'll give it a run tomorrow.

Ha-ha, I think I know who you're talking about and which sub

Glad to know you have more and more satisfied users in Ipoh.

Yeah, Master & Commander has excellent audio too. Good surround effects and bass.

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Added on November 5, 2009, 10:22 am

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Added on November 5, 2009, 10:22 amYeah, generally 3-4 dB.

This post has been edited by jchong: Nov 5 2009, 10:22 AM

Yes that is the ideal situation. When people kena poisoned they want it NOW!

I'm sure in time as htkaki grows he will have some stock in hand. Actually carrying inventory is one of the big business costs. I'm sure htkaki also has to do his forecasting to anticipate how much stock to carry.

Maybe he's already got several dozen units in the next shipment...

I guess it's just waiting for the order since it's coming via sea freight and some more gotta do the govt clearance, etc.

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Added on November 6, 2009, 11:45 amCan accept credit card will help sales too. So easy to whip out the plastic and swipe!

This post has been edited by jchong: Nov 6 2009, 11:45 AM

Am testing the EQ1 now and one of the side experiments I tried is checking the dB gain of a Y-splitter. Basically I measured the sub level with and without a Y-splitter and the difference is 6 dB.

So hsieng loong's observation is correct. I also thought it was 3-4 dB only, now I stand corrected.

If your AVR has Audyssey then best to re-run it and Audyssey will adjust the sub trim automatically.

To me the main benefit of a Y-splitter is that it effectively increases the sensitivity of your sub by 6 dB. The max output of your sub is unchanged (in car terms your top speed remains the same) but your sub amplifier doesn't have to work as hard to achieve the same output (this means lower distortion) - like in your case you turned down the gain by 3 dB means your sub works less hard by 3 dB but loudness to your ears is the same.

Hmm... isn't external sound card output supposed to go to AVR? I suppose anfieldude will chime in on this since he's familiar with REW.

This time REW connected to AVR input right (and not sub input)?

Why 30cm in front of listening position? I thought should be at the listening position.

Peaks and valleys are common, but yeah the valley at 50 Hz is deep! About -26 dB down from 75 dB. Even the valley at 62 Hz quite deep at -18 dB. The EQ1 also won't be able to boost that much to cut that valley completely. I know your placement options quite limited, otherwise you can try other positions.

Also I see the sub starting to roll off sharply at 23 Hz. Means you're missing out the deep, deep bass.