My 15" dayton HF does not sound loud at all...... - AVS Forum
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post #1 of 12 Old 08-30-2012, 10:10 PM - Thread Starter
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Hello, a couple of months ago I build a sealed dayton hf. Size is 24x24x26.
I am driving it with an Oaudio 500w amp. I have 5lb of poly fiber in it. When I listen to music i listen at around -18 on my yamaha av. My towers seem to sound louder than the subtoo. The subwoofer does not rattle anything in my house (you some times feel a slight vibration when sitting in the sofa) . When im watching movies i cant have to knob lower than -18 and the amp at 1/4 because the subwoofer makes a clicking sound, as if its hitting the dust cap. I went to best buy and herd their 10" B&W and it sound it MUCH louder than my subwoofer. mad.gif

EDIT: When the amp is on standby there is a red light instead of a green one.Some times the red is on when its playing too.

BTW the subwoofer does not sound tight and clean at all. Sounds very boomy and lifeless....mad.gif



HELP ME !!!!!!!!!!!

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post #2 of 12 Old 08-30-2012, 10:12 PM
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Might be a bad amp
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post #3 of 12 Old 08-31-2012, 03:23 AM
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Driving a 15" with a $40 plate amp will do that sometimes.

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post #4 of 12 Old 08-31-2012, 04:01 AM
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if it was this Oaudio amp it cost considerably more than 40$
http://www.oaudio.com/500W_SUBAMP.html - OOS currently but IIRC it cost a few hundred if not more, cant comment on the quality
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post #5 of 12 Old 08-31-2012, 04:04 AM
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My bad. Good specs on that amp, gotta look elsewhere. Air leaks would be my other guess.
Quote:
Originally Posted by Sibuna View Post

if it was this Oaudio amp it cost considerably more than 40$
http://www.oaudio.com/500W_SUBAMP.html - OOS currently but IIRC it cost a few hundred if not more, cant comment on the quality

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post #6 of 12 Old 08-31-2012, 05:11 AM
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How loud are you listening?

 

What are your mains?

 

How does the driver model in 8 cubic feet(can't model right now)?  Specifically excursion.

 

What is the sub trim level set to on the controller(AVR)?

 

How big is your room?

 

That dust cap clicking might be the VC hitting the back plate and if it is you should back off.....

 

One sealed 15 isn't going to have tremendous output across the board maybe your asking too much from a single sealed 15?

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post #7 of 12 Old 08-31-2012, 05:53 AM
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What NH said. Set the OAudio to 25Hz subsonic, then try again. The HF driver in such a big box cannot take much LF boost, and the OAudio amp has significant boost at the 12, 16 and 20Hz settings. Also, your mains will sound louder, they are being asked to produce frequencies that are simply easier to produce. For every halving of frequency, you need 4x the displacement (either 4x the speaker area, or 4x the cone movement) to keep the same volume or dB SPL.

Your room could also be robbing you of some key frequencies. Do you have a pic or drawing of the layout? Or even better, measurements?

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post #8 of 12 Old 08-31-2012, 05:55 AM
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Room placement is the most likely culprit.

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post #9 of 12 Old 08-31-2012, 10:40 AM
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Quote:
Originally Posted by deathinc View Post

Hello, a couple of months ago I build a sealed dayton hf. Size is 24x24x26.
I am driving it with an Oaudio 500w amp. I have 5lb of poly fiber in it. When I listen to music i listen at around -18 on my yamaha av. My towers seem to sound louder than the subtoo. The subwoofer does not rattle anything in my house (you some times feel a slight vibration when sitting in the sofa) . When im watching movies i cant have to knob lower than -18 and the amp at 1/4 because the subwoofer makes a clicking sound, as if its hitting the dust cap. I went to best buy and herd their 10" B&W and it sound it MUCH louder than my subwoofer. mad.gif
EDIT: When the amp is on standby there is a red light instead of a green one.Some times the red is on when its playing too.
BTW the subwoofer does not sound tight and clean at all. Sounds very boomy and lifeless....mad.gif
HELP ME !!!!!!!!!!!

One of the two Oaudio amps I received had that same issue. You definitely have a bad amp. Contact them for a warranty replacement, customer service is pretty good.
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post #10 of 12 Old 09-02-2012, 10:35 AM
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Quote:
Originally Posted by Bill Fitzmaurice View Post

Room placement is the most likely culprit.

+1
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post #11 of 12 Old 09-02-2012, 11:10 AM
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Did you have a previous sub? If so what was it? Also have you recently had a sub in your car? Most people listen to their stuff way too bass heavy in their 150-200 cubic foot car then wonder when they put it in a 4000 cubic foot room why its not loud. I was guilty of the same thing. Also what Bill said is very true. Walk around your room while its playing and it will get louder in some spots.
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post #12 of 12 Old 09-02-2012, 12:52 PM
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Quote:
Originally Posted by deathinc View Post

EDIT: When the amp is on standby there is a red light instead of a green one.Some times the red is on when its playing too.

If it is red when the amp is receiving signal, your amp is faulty.

Make sure the amp is actually receiving signal and that your levels are high enough. If you are hearing clicking from the driver, look at the driver when this is happening. If there is not a lot of movement from the driver, there should be no reason for clicking.
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