subwoofer into a stock euro deck

[Adrian Euro]

Hi every with installing these did anyone have the problem of a consistent hisssiing noise at low level like say maybe when your stereo is only on the volume 2 level?

[lilwilliam]

Hi every with installing these did anyone have the problem of a consistent hisssiing noise at low level like say maybe when your stereo is only on the volume 2 level?

Nope. mines all fine.. mayb you should check if the gorund wire is grounded properly.?

[EUR003act]

Hi every with installing these did anyone have the problem of a consistent hisssiing noise at low level like say maybe when your stereo is only on the volume 2 level?

yeah happens in mine... if i have stereo below 4 you can hear a slight airy/hiss sound... i think im getting noise through the LOC... it doesnt bother me because i never have volume that low!

you can try putting in either noise suppressor or line filter

[sitta]

with the loc does it have/make that whinning engine noise??

well depends on the installation, you can always put in ground loop insulator and make sure that you dont run the rca and power cable on the same side of the car get them away from each other.

[lilwilliam]

well depends on the installation, you can always put in ground loop insulator and make sure that you dont run the rca and power cable on the same side of the car get them away from each other.

^ i was thinking about that too but u dont use rca cabes from the front of the stock euro unit cos i just bridged mine to my rear speakers and the LOC unit sits in my boot so there shouldnt be any rca cables running with power cables. unless he has installed the LOC with his headunit?

[Adrian Euro]

^ i was thinking about that too but u dont use rca cabes from the front of the stock euro unit cos i just bridged mine to my rear speakers and the LOC unit sits in my boot so there shouldnt be any rca cables running with power cables. unless he has installed the LOC with his headunit?

Yeah its installed under the front passenger seat carpet. Does that help? This sound really kills it when its on low sound or even the radio. i hate it.

[traumatized]

depending on how you have tuned the amp will also cause the hiss noise.

have you tired adjusting the amp to a lower setting?

[EuroDude]

My system hisses, and everything points to the Head Unit.

Setup:

HU -> Stock Rear Speaker wires -> Rear Amp (high level input) -> 6x9's
HU -> Upgraded Front Speaker wires -> Front Amp (high level input) -> 5.25" door speakers.


The Head Unit hiss is only audible from VOL 1 to about VOL 10. After that hiss, the common Gain/Volume hiss you normally get from Amplifiers takes over.

BOTH Amps have the exact same HU hiss. And both Amp's give a Gain/Volume hiss when the volume is high (with music paused).

The HU hiss is always the same volume when the Volume is above '0'
The HU hiss completely disappears when the HU Volume is set to '0'
The HU hiss was not there with the Stock Speakers.
The HU hiss was not there when the Stock 6x9's were running of the Rear Amp.
The HU hiss is audible from the Front and Rear speakers, no matter what the HU Fade is set to.
The HU hiss is audible from the Front and Rear speakers, no matter what the HU Balance is set to.
The HU hiss increases if the Amp's GAIN Screw is increased. But the Hiss is still audible if the GAIN Screw is at its lowest setting.
The HU hiss is heard from all speakers, if the engine is On or Off.



So Ive figured that the stock Honda/Pioneer Head Unit has a natural hiss. This hiss is hidden by the stock speakers. The stock speakers have been tuned to avoid the frequency of the hiss. As soon as you add decent speakers with tweeters, the hiss becomes unhidden and audible.


Solution? Replace the stock HU, or use a Line Filter.

[euro77]

your system may not be grounded properly, or the way the cable is runned is not correct, hence the engine noise (the "hiss"). It's true, a line filter will reduce (if not remove) the hiss, but a properly set up system shouldn't have engine noise.

[EuroDude]

But the Hiss happens even when the Engine is off, so its not engine noise.

I may try connecting the aftermarket 6x9's straight to the stock speaker wires and see if it still hisses, but I have doubts.

The fact that the hiss is completely elliminated when the Honda Deck volume is turned down to Zero, indicates that its not likely to be a grounding loop.

[EUR003act]

My system hisses, and everything points to the Head Unit.

Setup:

HU -> Stock Rear Speaker wires -> Rear Amp (high level input) -> 6x9's
HU -> Upgraded Front Speaker wires -> Front Amp (high level input) -> 5.25" door speakers.


The Head Unit hiss is only audible from VOL 1 to about VOL 10. After that hiss, the common Gain/Volume hiss you normally get from Amplifiers takes over.

BOTH Amps have the exact same HU hiss. And both Amp's give a Gain/Volume hiss when the volume is high (with music paused).

The HU hiss is always the same volume when the Volume is above '0'
The HU hiss completely disappears when the HU Volume is set to '0'
The HU hiss was not there with the Stock Speakers.
The HU hiss was not there when the Stock 6x9's were running of the Rear Amp.
The HU hiss is audible from the Front and Rear speakers, no matter what the HU Fade is set to.
The HU hiss is audible from the Front and Rear speakers, no matter what the HU Balance is set to.
The HU hiss increases if the Amp's GAIN Screw is increased. But the Hiss is still audible if the GAIN Screw is at its lowest setting.
The HU hiss is heard from all speakers, if the engine is On or Off.



So Ive figured that the stock Honda/Pioneer Head Unit has a natural hiss. This hiss is hidden by the stock speakers. The stock speakers have been tuned to avoid the frequency of the hiss. As soon as you add decent speakers with tweeters, the hiss becomes unhidden and audible.


Solution? Replace the stock HU, or use a Line Filter.

i agree with eurodude on this one, ive done alot of audio installs, both incar and home setups... there no way its interferrence through the alternator or grounding... thats easy to pick up because as you accelerate the hiss changing frequency or gets louder, its very noticable... but the hiss i have is there even with engine off, its not so much a hiss, but more of a constant sound... hard to explain... if anyone has ever working in the DJ/PA/club audio industry, youd know the sound an active speaker makes when there is no signal input? thats the sound thats present...

[lilwilliam]

what LOC are u guys running?