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 The Official Subwoofer Thread v2, Everything you need to know about bass!

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jchong
post Dec 15 2009, 04:10 PM

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Thanks for posting the graphs htkaki. Now, interpreting them is a more complicated matter.

Shouldn't only look at the FR graph, but all the others as well since they each have their own story to tell. I still have lots to learn about the different graphs.

The notes in the test conclusions are also valuable to read. It was interesting reading about some of the fine differences between the PC13 vs PB13:

QUOTE
SVS PC-Ultra 13

I know there is quite a lot of interest around as to how this compares to the PB13-Ultra which we tested last year. SVS informs me that the cylinder has about 1cu ft less interior volume and is tuned to 22-23Hz as opposed to the 19-20Hz for the box version. We tested the sub in all four possible tuning options:

In order to show the low-frequency performance a little better we extended the graphs down to 10Hz for the lower tunings. As you will see, the measurements are indeed somewhat different to the PB13-Ultra. The FR is not quite as ruler flat and the maximum output suffers a little. Incidentally, we measured it standing up so the ports are slightly further away from the microphone resulting in a slight understatement of the low-end output which is produced mainly by the port(s). With the room gain in a medium sized room below 40Hz, it should be possible to get very good extension even in the Sealed tune.

jchong
post Dec 19 2009, 09:55 AM

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QUOTE(benben79 @ Dec 19 2009, 01:26 AM)
Since SVS is really that good,why the JL Audio win more awards while the SVS had nothing? blink.gif
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JL Audio has been in the market longer (and they also advertise). SVS has only been recently reviewed by the magazines, so let's give them some time.


Added on December 19, 2009, 9:57 am
QUOTE(benben79 @ Dec 19 2009, 12:54 AM)
Just like you all describe,the lower the frequency,then the better the subwoofer is.
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Lower frequency is not the sole criteria for judging a sub. You also have to consider things like output, distortion, group delay, etc.

This post has been edited by jchong: Dec 19 2009, 09:57 AM
jchong
post Dec 19 2009, 11:24 AM

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Just looking at the maximum output level graph alone...

1. F113 starts to roll off around 23Hz and max output at 20Hz is 101 dB.

2. PB13 starts to roll off around 18Hz and max output at 20Hz is 107 dB (could be higher but was not tested).

3. From about 23Hz - 70Hz, F113 is marginally flatter than PB13 although both can be considered quite good already.
jchong
post Dec 21 2009, 07:07 PM

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QUOTE(htkaki @ Dec 21 2009, 05:48 PM)
Yesterday, I had a special guest at my home to test out the PB13-Ultra. Finally, he is able to audition it with a much better 'controlled' environment althought the room is not an impressive one compared to his  blush.gif
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Which special guest? tongue.gif

Just another enthusiast and forummer visiting the famed htkaki in his pad.
jchong
post Dec 21 2009, 11:50 PM

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QUOTE(htkaki @ Dec 21 2009, 10:05 PM)
biggrin.gif 

Finally, he is able to experience a ported beast since he had auditioned the sealed monster in PG.
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Ha-ha, monster vs beast (not Monsters vs Aliens).
jchong
post Dec 22 2009, 10:39 AM

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QUOTE(ronaldjoe @ Dec 21 2009, 11:52 PM)
So bro jchong, which one do you prefer?
Mind to share some thoughts here. Thanks
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QUOTE(ronaldjoe @ Dec 22 2009, 08:39 AM)
Taukeh jchong has a pairs of golden ear and elite taste.
I have no chance to listen to your gigantic submersive yet.

He is d most trust worthy person to give feedback and comments on this. nod.gif
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Frankly I doubt I have golden ears. Probably only silver or brass smile.gif There was a link posted in another thread for hearing tests based on pitch, tone, etc... did so-so only.

Anyway, both PB13 and Submersive have slightly different characteristics (probably due to being ported vs sealed). Both are top class models in their respective categories so the differences are not worlds apart. But also note a proper comparison wasn't done because both were in different rooms and importantly I didn't use the same BD to demo, so I didn't get a chance to hear the same scene on both subs. From general impressions:

1. The PB13 can be well behaved when tuned properly. Obviously at htkaki's place it was tuned properly (not hot) and had the benefit of AS-EQ1. It was also sitting on the Auralex platform. So bass was quite articulate and tight (not your typical ported sub). However, in terms of tightness and control the Submersive still edged it out (this is w/o AS-EQ1 or Auralex platform). There is a bit more definition with the Submersive.

2. The PB13 had a fuller, room filling bass sound. Maybe this is related to the group delay difference between ported vs sealed. It's like the bass has more body. Bass on the Submersive is more defined and focused. If you like your bass to shake the room then PB13 has slight advantage.

3. In terms of power, didn't push the Submersive really loud. Didn't push htkaki's PB13 that loud either but I did hear the PB13 in another person's house where it was really pushed and it overloaded the room (became too boomy). I suspect that if you pushed the Submersive hard it wouldn't overload the room so much.

These are the impressions so far. Wish I was able to do a more apples-to-apples comparison with the same BDs.
jchong
post Dec 22 2009, 10:53 AM

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QUOTE(ronnt88 @ Dec 22 2009, 08:34 AM)
wah... don't la put our bud in a tough spot tongue.gif

actually, his rythmik & my subm should sound very similar both being sealed.. maybe mine had a little more headroom with dual drivers. So I believe he should prefer the ported beast since he's looking for something different smile.gif
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Yes, the Rythmik and Submersive shares quite a lot in common - tight, accurate, articulate. In terms of difference, yes yours would have more headroom. Also more output, so if you wanted to play loud you can do so easily with the Submersive. The Rythmik would likely bottom out earlier. Also in long and deep bass scenes (e.g. the skidoosh in KFP) the Submersive controls it better throughout.
jchong
post Dec 22 2009, 02:11 PM

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QUOTE(ronaldjoe @ Dec 22 2009, 12:14 PM)
This is the description that I am looking for.

Can't wait to listen to it if I had the chance.
Monster sealed subs is the way to go. Properly it's time to switch camp.
Thank you for the detailed feedback and comments. notworthy.gif
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If you like defined and tight bass then probably sealed sub is the way to go.
jchong
post Dec 22 2009, 08:24 PM

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QUOTE(ar188 @ Dec 22 2009, 08:03 PM)
I tot is the bestest if you get twin monster subs..  biggrin.gif  tongue.gif
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Or even 4... drool.gif
jchong
post Dec 23 2009, 12:18 PM

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QUOTE(ronaldjoe @ Dec 23 2009, 11:29 AM)
Can we get best of both world by mixing them up?
Would the characteristics of sealed and ported be blended, but losing their own identity?
EQ1 can calibrate the timing well, would both comprise each other to make a balance then?
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Need someone to experiment with this... who's gonna be guinea pig? biggrin.gif

As far as EQ1 is concerned, although it does the calibration well some of the inherent characteristics of ported vs sealed will still remain.
jchong
post Dec 25 2009, 09:31 AM

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QUOTE(htkaki @ Dec 25 2009, 09:02 AM)
Hehe.... if you ask me, for sure it would be the F113 and not DD12 for a compact sub.
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+1
jchong
post Dec 25 2009, 10:17 AM

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QUOTE(ar188 @ Dec 25 2009, 09:58 AM)
taukeh got F113 ar?  biggrin.gif  support! +100
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Nope don't have F113. Just supporting htkaki's opinion that F113 should be better than DD12.
jchong
post Dec 28 2009, 11:23 AM

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QUOTE(htkaki @ Dec 28 2009, 12:51 AM)
Probably will go and audition the Sub25 on one of this weekdays, which I think should be an outstanding sub.
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Which shop has the Sub 25 for audition? If I happen to be in KL same time as you, then maybe we can go together to listen.
jchong
post Dec 28 2009, 11:30 AM

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QUOTE
shocking.gif watch Terminator Salvation at the GSC Pavillion before.
I think it is a THX certified movie and THX cinema too.
Their bass was so deep and strong.
Enough to shake my heart inside
Never know bluray also so geng!
Awesome  thumbup.gif


With bluray I think it is possible to equal or even exceed the cinema experience if you have sufficient budget. With good equipment, good room and good setup it's possible.

QUOTE
And most probably im going for PSB speaker.
If budget enough,maybe for the Synchrony TWO(not one since it is expensive)
Or if really been poisened 99 and the price btw Synchrony 1 and 2 is not that far apart,then I will go for Synchrony One.
And im looking for a pre and power combo set up.
No need to upgrade anymore
And Mark Levinson price is enough to left a big hole on my wallet and bank account.
So maybe Rotel or NAD.
I tested the Pioneer LX82 before at Desa Home theatre.
A very powerful and awesome amplifier too


Looks like your HT room will shape up nicely. The PSB Synchrony is a very nice speaker. It definitely deserves a power amp to drive it well. I agree that a pre/pro and power combo is the way to go for you.
jchong
post Dec 28 2009, 01:53 PM

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QUOTE(benben79 @ Dec 28 2009, 12:21 PM)
Boss you tested the PSB Synchrony One before?
Any comment?
Went to Amcorp Mall on last Saturday.
They demoing the PSB Synchrony with Densen Audio mono.
The sound was so sweet and detail.
And their bass is very strong for a floorstander size like this.
But for HT setup,what do you think bro?
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I have listened to PSB Synchrony One briefly before... can't say I've tested it. Good bass, clear mids and treble. Yes I think it would also be suitable for HT use.
jchong
post Dec 29 2009, 11:17 PM

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QUOTE(logit85 @ Dec 29 2009, 09:49 PM)
Paradigm Signature SUB 25 PDF link http://rapidshare.com/files/327481276/SUB-25_PDS.pdf
check out FR 9hz  shocking.gif  shakehead.gif
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That FR graph is not very informative. For more useful info see this review: http://www.hometheaterhifi.com/subwoofers-....html?showall=1


Added on December 29, 2009, 11:23 pm
QUOTE(logit85 @ Dec 29 2009, 11:09 PM)
i think u havent download pdf file sub25
FR low 9Hz  shocking.gif
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That 9 Hz is quoted in typical listening room. Anechoic testing might not yield such low Hz. In the review above (done in room, middle position) the reviewer states: "Paradigm’s product sheet for the Sub 25 states “low frequency extension 9 Hz (DIN),” but I could not reproduce usable output at or below 10 Hz during my bench tests."

Always take manufacturer's claims with a pinch of salt.

This post has been edited by jchong: Dec 29 2009, 11:23 PM

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