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Old 07-08-2010, 02:02 PM   #11
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so is that why my amp is clipping becaouse its too weak
like my subs are pulling too much from the amp ??????? and they both are 4 ohm subs wired parellel to 2 ohm
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Old 07-08-2010, 02:13 PM   #12
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so is that why my amp is clipping becaouse its too weak
like my subs are pulling too much from the amp ??????? and they both are 4 ohm subs wired parellel to 2 ohm
Yes, your amp is too weak for those subs. Get rid of one of the subs.
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Old 07-08-2010, 02:24 PM   #13
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subs dont "pull power" from amps, fyi. But yes ur amp is not powerful enough and u had ur subs wired to 1 ohm, and ur amp is not 1 ohm stable
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Old 07-11-2010, 02:50 PM   #14
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ok i have an alpine type r 12 and a type r 10 i have an infinity refrence 611a mono block amplifier the specs on the amp say 676 watts rms at 2 ohms but my subs will hold at least 400 a piece rms and when i turn my amps gain up halfway the clip light starts flashing bassboost is all the way down and no bass on my head unit will i blow my subs if i turn it more or should i back down
First question is why are you running two different size subs? Personally, I'd run one or the other, regardless of the issue you described because your subs can handle 500rms each so your 676 watt amp is barely enough to push one, let alone 2. And the fact that they're different sizes doesn't help either.

But your clip light is flashing because you're clipping the signal

The gain on your amp is not supposed to be used a volume ****, it'* to allow you to match the input signal from your deck to the amp so they're "on the same page" so to speak. There are several ways to set the gain, the best being with the help of an oscilliscope. But not many people have one and even fewer actually know how to use them so that means you either have to do it by ear or use a dmm and this chart to get it dialed in



Yes, sending clipped signal to your subs can and will result in blown subs

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And if im not mistaken Infinity rates their amps at 15v like sony, Lanzar, ect. So ur not actually pushing 676w rms. Brands like PPI, Kicker, ect rat their stuff at 12v. So when u actually put it in your car, your amp is putting out close to what they say
Infinity doesn't rate their amps at 15v and PPI/Kicker don't rate their amps at 12v, they all rate them at 14.4v

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subs dont "pull power" from amps, fyi. But yes ur amp is not powerful enough and u had ur subs wired to 1 ohm, and ur amp is not 1 ohm stable
Uh, subs do pull power from amps and the impedance level is not why his amp is clipping, nor is it what would happen if his subs were wired at too low of an impedance for the amp to handle.

The subs dictate how much power the amps put out based on the impedance of said subs. If his subs were wired at too low of an impedance for his amp that wouldn't cause clipping, that would cause his amp to go into protect. Clipping is caused when the amp attempts to deliver an output signal that exceeds it'* capability, i.e., turning the gain too high.
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Old 07-11-2010, 05:37 PM   #15
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ok i did the test on the chart and when i set my gain on the amp its at 40 volts with no clip light is that ok ??????? and when i turned the gain all the way up it read like 53.3 is that normal for a 676 rms amp or is this amp more powerful than infinity gives it credit for ???also im getting 14 volts dc at the power wire on amp
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Old 07-11-2010, 05:54 PM   #16
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ok i did the test on the chart and when i set my gain on the amp its at 40 volts with no clip light is that ok ??????? and when i turned the gain all the way up it read like 53.3 is that normal for a 676 rms amp or is this amp more powerful than infinity gives it credit for ???also im getting 14 volts dc at the power wire on amp
According to the chart and the power rating of your amp you should be between 36-37, but if you're not clipping @ 40 then run it like that for a while and see how it works out. No, it doesn't mean your amp is any more powerful than rated. You seem to be of the thinking that at 53v your amp can put out about 1400 watts, that'* not what that means.

There is no "normal" for any amp cause what you're doing is matching the signal from the deck to your amp. So if you had two decks, one with 2v preouts and one with 8v preouts and connected them to your existing amp, the gain setting would be different for both of them because the preout voltage is different. Does that make sense? I'm not exactly the best at explaining things
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Old 07-11-2010, 06:10 PM   #17
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yes that does make sense and thanx for the input (ha ha) lil dry humor but i do appreciate it im tryin to get my hands on another amp one for each sub and it sounds way better with both subs the 10 has better response than the 12 they both sound awesome together i dont think it will mess anything up having a 10 and a 12 theyre both 4 ohm subs wired paralell to 2 ohm and they both have the same rmsand what not in seperate boxes
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Old 07-11-2010, 06:38 PM   #18
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Quote:
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yes that does make sense and thanx for the input (ha ha) lil dry humor but i do appreciate it im tryin to get my hands on another amp one for each sub and it sounds way better with both subs the 10 has better response than the 12 they both sound awesome together i dont think it will mess anything up having a 10 and a 12 theyre both 4 ohm subs wired paralell to 2 ohm and they both have the same rmsand what not in seperate boxes
Haha, that was a good one

One thing to remember though is that when you connect the subs to the amp, those two 2ohm loads become one 1ohm load and I don't think your amp is stable down to 1ohm so while it might work for a while, you're definitely on borrowed time.
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Old 07-11-2010, 06:43 PM   #19
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When you have two DVC 4 ohm subs, the final impedances you can end up with when hooked up to a mono amp are 16, 4, 1.......and of course 16 should never ever be considered as an option so let'* keep it real, it'* 4 and 1.
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Old 07-11-2010, 06:51 PM   #20
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so if i wired the subs individually in each box with one voice coil 4 0hm and then put them on seperate channels it would be a 2 ohm load on the amp ???
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