Reply to thread

Message

<blockquote data-quote="El Ropo" data-source="post: 1594041" data-attributes="member: 561863">The box is way too large for those subs.&nbsp; Put them in .5-.7 cu ft sealed each and they&#039;ll sound a lot better.&nbsp;&nbsp; That&#039;s gonna be a lot of 2 x 4s lol.You didn&#039;t mention what HU?&nbsp; What&#039;s the line out voltage?&nbsp; I&#039;m running a Nine.1 at 2 ohms, and my gains are set with a DMM to put out around 800 watts.&nbsp; The gain knob is at around 25% of max.&nbsp; 3/4 gain seems awfully high unless you&#039;re running a very low votage input.The NIne.1 is not the type of amp that you need to crank the gains up that high.&nbsp; I&#039;d check the amp output with a DMM.&nbsp; If you&#039;re getting any more than 44.7 volts AC(assuming the Nine.1 can put out 1000 watts @ 2 ohms, which it can easily do with healthy electrical), then your gains are set too high, and you risk damage to your subs.If all that checks out, definitely verify the subs are wired correctly.&nbsp; BTW, the 4 speaker terminals on the mono amp are for ease of installation.&nbsp; The 2 negatives, and 2 positives are bridged internally, meaning you can connect to just one plus and minus, or use all 4 terminals.If all else fails, what kind of car?&nbsp; if it&#039;s a trunk car, maybe you&#039;re getting cancellation?&nbsp; Try turning box around, or if you have Time aligment and phase adjustment for your subwoofer output on the HU, you can mess with that.&nbsp; I know time aligment helps the subwoofer performance in my car drastically.</blockquote>

[QUOTE="El Ropo, post: 1594041, member: 561863"] The box is way too large for those subs. Put them in .5-.7 cu ft sealed each and they'll sound a lot better. That's gonna be a lot of 2 x 4s lol. You didn't mention what HU? What's the line out voltage? I'm running a Nine.1 at 2 ohms, and my gains are set with a DMM to put out around 800 watts. The gain knob is at around 25% of max. 3/4 gain seems awfully high unless you're running a very low votage input. The NIne.1 is not the type of amp that you need to crank the gains up that high. I'd check the amp output with a DMM. If you're getting any more than 44.7 volts AC(assuming the Nine.1 can put out 1000 watts @ 2 ohms, which it can easily do with healthy electrical), then your gains are set too high, and you risk damage to your subs. If all that checks out, definitely verify the subs are wired correctly. BTW, the 4 speaker terminals on the mono amp are for ease of installation. The 2 negatives, and 2 positives are bridged internally, meaning you can connect to just one plus and minus, or use all 4 terminals. If all else fails, what kind of car? if it's a trunk car, maybe you're getting cancellation? Try turning box around, or if you have Time aligment and phase adjustment for your subwoofer output on the HU, you can mess with that. I know time aligment helps the subwoofer performance in my car drastically. [/QUOTE]

Verification