Sub not bumping hard
#11
Just a thought...similar thing happened to me in another vehicle. This is simple to check...you said PO installed the system. What type of sub enclosure have you got?? If it's supposed to be sealed, make sure it is!!!! I had some Q Logic enclosures in a truck of mine and they sounded great for awhile. All of a sudden, weak bass. Checked subs, amps, wiring, etc. Come to find out the box seam had blown a small hole in it from the pressure of the subs. MDF, glue and air gun nailed aren't the best to build boxes. Always use screws when you can. Found this while checking outside of vehicle and felt a breeze when playing. Disassembled box, remade the joint, put back together and WOW; huge difference. If the enclosure is supposed to be sealed, try pushing (carefully) the sub cone in and then let go. Sub cone should come back out "slowly" due to vacuum in box. If it comes right back out almost as quick as you let go, there is a leak. If it's a ported enclosure (doubt it in a S2K) this won't work...besides it's not sealed anyway.
It's long winded but true!!!!!
Dale
It's long winded but true!!!!!
Dale
#12
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Join Date: May 2005
Location: Plano, TX
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I'm a bit confused about the post above... If there's a hole then you'll push air out and create the vac, but if it's sealed then you'll create a positive pressure enviroment behind the sub and it should come out quicker than if it's a neutral pressure enviroment like it would be with a hole...
#13
Originally Posted by darkknight1999,Apr 18 2006, 11:06 AM
So far what I've read here sounds like something to do with the amp possibly. Are you sure its working properly. You did the right thing testing the sub on a different amp. That rules out the sub... so I would start looking at the amp and the setting on the HU. Is the HU new as well? As in your not used to the settings and how it works?
I know Sony isn't really ideal for car audio, but i have heard some good things about the Hifonics Zues series.. both these amps are more powerful than the rockford fosgate amp, yet the bass is HARDLY audible even when my ear is right next to it. I can't even tell its ON when i'm inside the car... but when i used the fosgate amp which is only rated at 50W at 4 ohms when bridged it actually sounded decent on a lower volume...
Both of the other amps are rated at 200w at 4 ohms so i find this very strange..
Well, i think i'm just going to scrap the sub all together.. I'm not a big audiophile but i had all the equipment so i thought it would be nice to get it working but i guess not!
Time to sell these crappy amps on Ebay
#15
Originally Posted by JawKnee,Apr 18 2006, 06:42 PM
Have you turned on any filters for the channels driving the sub on your Zeus amp?
Otherwise i don't know, there's just the frequency for low pass and bass EQ on the amp.
#17
Originally Posted by Doug0716,Apr 18 2006, 05:03 PM
I'm a bit confused about the post above... If there's a hole then you'll push air out and create the vac, but if it's sealed then you'll create a positive pressure enviroment behind the sub and it should come out quicker than if it's a neutral pressure enviroment like it would be with a hole...
#19
Former Moderator
Check to make sure....
1)The Gain is half way (it will blow your sub to bits if we get it working)
2)Make sure the amp is on LPF, not HPF
3)Set the Feq to 120hz for now
4)Check wires amp (properly wired)
5)Check wiring on sub (properly bridged) If its DVC, run them in stereo (1 channel to one coil, and the other channel to the other coil)
6)Check the RCA is plugged into the SUB OUT of the headunit, not REAR OUT (ive done this before by accident)
Report back.
1)The Gain is half way (it will blow your sub to bits if we get it working)
2)Make sure the amp is on LPF, not HPF
3)Set the Feq to 120hz for now
4)Check wires amp (properly wired)
5)Check wiring on sub (properly bridged) If its DVC, run them in stereo (1 channel to one coil, and the other channel to the other coil)
6)Check the RCA is plugged into the SUB OUT of the headunit, not REAR OUT (ive done this before by accident)
Report back.
#20
thanks for all the help. Instead i just took the whole sub and amp out for the time being.
I'm sure the RCAs are right because i can control the sub from the SUB ON-OFF from the HU. Rear outs are taken by the S-pod speakers.
The car has two amps btw.
But i'm pretty sure all the wiring is good. The grounds are all good. Especially because i was able to test it with the rockford amp and it worked well without making any changes.
I guess i'll just have to decide if I want to spend the money on an amp or not, but i can live without the sub really.
I'm sure the RCAs are right because i can control the sub from the SUB ON-OFF from the HU. Rear outs are taken by the S-pod speakers.
The car has two amps btw.
But i'm pretty sure all the wiring is good. The grounds are all good. Especially because i was able to test it with the rockford amp and it worked well without making any changes.
I guess i'll just have to decide if I want to spend the money on an amp or not, but i can live without the sub really.
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