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Sub 660 low power??

post #1 of 32
Thread Starter 

Hello there! 

 

First of all i am new to this forum so ill introduce myself, im kalekip21 from the netherlands ^^

 

Then,

 

I recently bought a jamo sub660. i got a feeling this sub can do more then what it is showing me right now.

My amp is a Sony STR-DH520 and i feel im not getting everything.

 

Any tips on how to configure it or advice?

 

Thanks!!

 

---Kalekip21

post #2 of 32
Which set of speakers do you have?
post #3 of 32
Thread Starter 

I have a harman/kardon HKTS9BQ speaker set.

post #4 of 32
Your room size and layout?

Set your speakers to small with 100Hz crossover frequency in the AVR. Bypass LPF on the sub by dialling it to its max position (200Hz). Use input marked Left/LFE on the sub.
post #5 of 32
Thread Starter 

Around 8 M2 and what do you mean with layout? :P

post #6 of 32
Where is the sub located in the room? Is it on the front wall next to mains or side wall or behind main listening position?
post #7 of 32
Thread Starter 

Wait i can get you a picture if youd like

post #8 of 32
Thread Starter 

This is how it looks like

post #9 of 32
Woopsy daisy!!!!!

For a start just put that sub in any of the front wall corners, keep the gain knob in mid position on the sub, and run the auto set up routine on your AVR.

Once that is done and you get the proper distances for all your speakers and sub and they are level matched then set your speakers to small, crossover frequency at 100Hz in avr. Make sure you bypass LPF on the sub by dialling it to its max position (200Hz). Use input marked Left/LFE on the sub.

If bass is less; feel free to bump up the sub trim level in AVR. If still you feel less bass; raise the crossover for all the speakers in the AVR to 120Hz. Try and check how it sounds to you.
post #10 of 32
Also..............if those are your mains and that is the screen you'd watch movies on; push your mains further apart in order for you to have a wider sound stage. That's the first thing you must do before running auto routine on avr
post #11 of 32
Thread Starter 

Sorry but i am from the netherlands so my english aint perfect hehe..


Could you explain this a bit more? "For a start just put that sub in any of the front wall corner, keep the gain knob in mid position on the sub, and run the auto set up routine on your AVR."

post #12 of 32
Thread Starter 

By the way i am soon to buy some new main speakers,

 

I was looking at the Jamo S608, or do you have some advice on better speakers? 

And if i do get new ones, would i need a new AMP?

 

Thanks!

post #13 of 32
Thread Starter 

aI have noticed why its not loud enough, its getting limited by my amp somehow because when i turn it on first its really loud but then it suddenly switches to really soft..

any help??

post #14 of 32
Thread Starter 

Can someone answer this? can my sub be limited bc of my amp/reciever

post #15 of 32
The only limitation posed by receiver that I could think of could be weak pre amp signal to subwoofer resulting in low output from the sub.

What do you mean by sub being really loud when you when you turn on and then it gets soft?
post #16 of 32
Thread Starter 

I mean when i first turn it on it has better response and goes louder..

Either i am expecting to much from this sub or i need a new amp/reciever lol;D

post #17 of 32
Quote:
Either i am expecting to much from this sub or i need a new amp/reciever lol;D

You don't need to change your receiver. Nothing wrong with the sub either. It's your room and how your system is set up. The only things, for now, that require changing are the room and positioning of the sub/speakers.
post #18 of 32
Thread Starter 

Thats the problem.. they cant be set somewhere else..

Wait ill make a drawing of my room.

post #19 of 32
Thread Starter 

This is how my room looks.

 


Edited by Kalekip21 - 12/11/13 at 3:29am
post #20 of 32
A subwoofer is not a shotgun, so, aiming it at the listening position has no effect. A sub radiates energy in all directions. Anyway, your current listening position is almost in a null (weak or no bass region). It should be where the drawer/closet is in mid rear wall position. I think the ideal position of the sub is in the front left corner; but that place is occupied by the wall/pillar. Anyway the current position of the sub will still work ONLY if you move your listening position.

Just play any bass heavy song and stand next to the sub where the closet/drawer is. You should hear strong bass in that region. Also, your room is cluttered with closets/drawers. All these objects mess up with subwoofer response in the upper midbass.
Edited by braveheart123 - 12/11/13 at 7:24am
post #21 of 32
Quote:
A subwoofer is not a shotgun

Ha! lol.. what about the "little rebel rouser" though? at least the front of it looks like a shotgun (10g) at that!
post #22 of 32
Thread Starter 

Lol,

 

But i thought this sub would shake the house.. hehehe

post #23 of 32
That room is so small a tweeter could shake it. Are you sure the cone is even vibrating ?
post #24 of 32
Thread Starter 
Yea im pretty sure the cone is vibrating. Pretty hard too.. lol but neither of all my speaker will shake anything on full blast..
post #25 of 32
How did you connect the subwoofer ? What inputs did you use ?

post #26 of 32
Thread Starter 
I connected it to the white LFE jack using an RCA cable (the upperleft white one)
post #27 of 32
Did you try the red one ?
post #28 of 32
Actually what I would do is buy one of these little splitters and try it with both inputs at the same time. My JBL es150p just doesnt like it if I use only the LFE input, output from the PC, so I connect them both.

post #29 of 32
Thread Starter 
Alright, will try that! Will report back if something changed!
post #30 of 32
Quote:
Yea im pretty sure the cone is vibrating. Pretty hard too

There is absolutely nothing wrong with how your sub is hooked up right now. It's only the placement issue of listening position and sub. You are almost in the middle of room both width and length wise. Move you LP further back i.e. close to rear wall and push your sub into left or right corner then rerun auto calibration.

You can add a $10K sub in the mix; you would have the same result if you don't set up your system properly. Placement is the foremost step when it comes to subs.
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