Subwoofer

[Goblin]

I have DB sa272 d2 sub single. It was hitting hard before now it's not checked all wirings everything seems to be good, then checked ohms on multimeter if the one coils is been damaged or not(wired parallel) it was still showing 1.4 ohms. I'm not getting what's the problem. Pls help me to get through

[SnowDrifter]

Does it sound like it's about half as loud?

Might be worth re-seating the RCA connectors on both the amp and the back of the head unit

[Joe X]

18 hours ago, Goblin said:

I have DB sa272 d2 sub single. It was hitting hard before now it's not checked all wirings everything seems to be good, then checked ohms on multimeter if the one coils is been damaged or not(wired parallel) it was still showing 1.4 ohms. I'm not getting what's the problem. Pls help me to get through

 

Do you have any electrical upgrades? systems above 1000W of power need upgrades, a high power system without upgrades will start under performing (getting less loud among other symptoms) overtime and at some point that electrical system will fail.

[Goblin]

Yes I have done the big3 upgrade as well with an extra AGM to support

[Goblin]

Or should I just take out the sub n check the terminals if one coils has fried or clipped 

[Goblin]

@SnowDrifter rcas are alright OEM headunit added a dsp

[Joe X]

On 9/13/2024 at 9:43 PM, Goblin said:

Yes I have done the big3 upgrade as well with an extra AGM to support

 

If your amp is rated above 1000W RMS you also need a HO alternator, batteries and wiring are good upgrades but what makes energy is the alternator.

 

Feel free to check your subs but since you say the final impedance of 1.4 ohm has not changed likely you will find everything in order.

 

A small upgrade you could do is getting a voltage gauge and connect it to your amp power terminals, with your car on and on the road your voltage should be  about 14 volt and should not dip a lot when the bass hits, if you see 12V or less and 2+V dips then you electrical is dying and needs