Bass is sometimes boomy during movies.

How large is your room and what volumes do you listen at?

That sounds really hot on the settings you may be running out of headroom.

It's likely a combination of:
- your sub not being very powerful (8" driver, 250W peak);
- the corner placement (which can provide maximum gain at the cost of some boominess and/or localization); and
- the fact that you're driving it hard / beyond its "comfort zone" (sub gain at 3/4 and 4dB hot in the AVR setting).

Try:
- dialling it back either on the AVR or the sub itself;
- moving the sub to a spot along a wall that offers a decent compromise between level and clarity. (Do a crawl and find a couple of spots that provide a response that is similar, if somewhat reduced, to the response you get in the corner).

All that being said, you may require:
- dual subs;
- a better, more powerful sub.

Hope this helps.

I agree. Corner placement is not always a good place for a sub, and if you are pushing it, more often then not, it will cause you sub to sound boomy.


Ian

Sub is too hot

What do you guys mean when you say "Sub is hot" ?

When you calibrate a sub to your system and then boost the gain, you're running it "hot". Folks (like me) seem to like to run their subs 3-4dB hot.

Using test tones and, ideally, an SPL meter, each of your speakers should yield the same sound level at the listening position with a test sound. The sub should be the same. It is at least possible that your sub is "calibrated" well over 10 dB louder than your mains (twice as loud, or more given the frequency range). Lots of people run their bass hot, but it's best to know where you are, especially with a merely mortal subwoofer (mine is too and distorts like crazy if I try to play action movies too loud)

Ah I see. Thanks

This is probably a room acoustic issue, where some frequencies in the source play at an exaggerated volume. You could measure your room's response using appropriate software to find out for sure. But I can tell you now that if you have no bass traps or other acoustic treatment, this is most likely the problem.

--Ethan

move the sub to midwall or 1/3 wall length placement and get it out of the corner for an audition. See if you like the sound better or worse.

Makes good sense to me, and it won't even cost you anything.



Ian

I have looked though most of the other threads and managed to find this, thread hiding out amongst the million so threads.

x5 LCR/Surrounds (have you changed the speakers since I'm amusing your using all 5 of these)?
http://www.jamo.com/eu-en/products/s...pecifications/

x1 Sub
http://www.jamo.com/eu-en/products/s...pecifications/

Onkyo AVR
http://www.intl.onkyo.com/downloads/...8_manual_e.pdf

I see no reason why all the above shouldn't work in the room.



You don't mind if I quote you, from this thread.

http://www.avsforum.com/avs-vb/showt...1381438&page=2


I'm surprised you haven't destroyed the AVR and speakers by now. I'd seriously read though the user manual. Its no wonder your running -40db with wrong film mix that has high dynamic effects.



I see you play the piano so you should have ear to setting this, up under crude listening ear conditions but preferable RTA and SPL db meter should be used to make sure its all critically aligned.

Oh so you do have an SPL db metre, well that's a small start.





You have bird in the room or next room with the door open?

Get carpet down if you can that will take out most of the brittle sharpness of the room as I can hear it on the video.

I'm only monitoring the audio playback in the bedroom on JBL control 5 that is wired to centre channel I haven't bothered with left and right or surrounds or sub, I go to living room for that!

But the audio capture from mobile phone or digital camera with video is picking up a reasonable recoding.

"Fast and the furious 5" (2011) I was within buying that yesterday at cheap price but brought "Rise of the Planet of the Apes" (2011). I'll buy it next time around, opening seems like sound listening fun.

That small centre I'd be easy with it centre channel can carry high to very low frequencies at times and can easily damage the tiny drivers bass mid or fry the voice coil on the HF.

Anyone have independent LCRS LFE.1 frequency waterfalls of the opening of "Fast and the furious 5".

But he changed his settings:









Ian

I see. Well I have to get back to doing some things.