Any one know anything about the stock amp

[phloop]

Does any one know the power of the stock Infinity amp? I have a set of speakers I want to add but don't want to blow them with the lack of power from a weak amp.

 

[phloop]

No one has any info?

 

[Cattletrkr]

No one has any info?

Nope. :-laf

 

[phloop]

I can tell. That or they just don't care as it doesn't make the truck go any faster.

 

[Simplysmn]

I would say talk to a shop and get advise from them I am sure they will try n sell you new stuff but if you say i am looking for information and then maybe I will buy new they Might give you the right answer .

 

[phloop]

As I have a small pile of high end stuff to install, taking this quest for a power rating of the amp is really just a waste of time. Just wanted to install the speakers without the worry of blowing them from a weak amp. I can wait and install them when I get the rest of the stuff in.

 

[AHofner]

Speakers

What kind of speakers are you putting in? The ones in the door of my truck are toast and I need to replace them with something.

 

[NUKEMAN]

Had a local shop measure mine before I replaced the door speakers. Somewhere around 8 amps.

 

[JSellers]

Just wanted to install the speakers without the worry of blowing them from a weak amp.

Use a bit of restraint with the volume control. It's not difficult to tell when an audio system begins to distort - and that should be your upper limit for safe operation with the new speakers.



I'll hazard a guess that you will endanger your hearing before you'll risk the speakers.



Or, you could just install some properly sized fuses... .



Hope this helps,

John

 

[phloop]

Had a local shop measure mine before I replaced the door speakers. Somewhere around 8 amps.

OK, whats that in watts? Amp power is discribed in watts, not amps and I am not an electrical engineer so I can't do the math.



AHofner, the speakers I have are not for every body. I bought a set of MB Quart QSD 216's. If you have the Laramie/Infinity radio you would be happier with a set of mid line separates. If you have the base line radio, a decent 6x9 speaker would do just fine.

 

[ENafziger]

OK, whats that in watts? Amp power is discribed in watts, not amps and I am not an electrical engineer so I can't do the math.

Well, may get someone else's opinion on this, but at first glance I'd say:

P = I * V or Power (Watts) = Current (Amps) * Voltage (Volts)

So, in this case:

P = 8 amps * 12 volts

P = 96 Watts

However, if this is total power of the amplifier, then this would have to be divided by the number of channels the amp is putting out... probably 4 in this case, but I'm not sure how power is divided when split through the built in crossovers in the amp.

So, a rough calculation would say:

96 Watts / 4 channels = 24 Watts per channel

Additionally, if the 8 amps was measured as power consumed by the amp, the output would be slightly less due to the amp's efficiency be less than 100%.

Again, I'm for sure not an electrical engineer either, but since noone else responded, I figured I'd try to help. I'd say the stock amp is somewhere in the range of 20 - 24 Watt x 4 channel.

Hope this helps! --Eric

 

[NUKEMAN]

96 Watts / 4 channels = 24 Watts per channel

Sorry, should have explained this better. 24 watts was roughly what we figured too.

 

[BTighe]

i thought they had amps on the speakers or something weird like that. more than likely any decent aftermarket speakers would hold up fine.

 

[phloop]

The gen 3's with the Infinity sound system has a seperate amp under the dash.



And a decent speaker might work with it and might not. You can damage a good speaker easier with less power than with more power. If I had decent speakers I would not worry about slapping them in. As I have some good speakers I am worried about burning them out with the lack of power.





Thanks to all that have replied. I have decided too just wait to install them with the rest of the system.

 

[JSellers]

You can damage a good speaker easier with less power than with more power. If I had decent speakers I would not worry about slapping them in. As I have some good speakers I am worried about burning them out with the lack of power.

Kudos for your concern against trashing newly installed speakers, but a bit more clarification seems warranted.



A "lack of power" will not damage your speakers. What CAN damage them is running the amp beyond it's rated capacity, even if the speakers have rating for higher power handling. Distorted output can - and will - damage speakers, even if the speakers are rated for high power. It's the distortion, which has more frequency components than normal audio, that tend to overheat the speaker voice coil. That's how speakers are damaged with low power amplifiers.



If you don't run the amp beyond its reasonable capacity to provide clean output, your speakers are not at risk. Running a low power amp into distortion will certainly sound unpleasant long before speaker damage occurs.



On the other hand, if you are a volume hound, and don't trust your judgement (or your passenger's judgement), then you can fuse the speakers to prevent overloading. Without knowledge of the power output for any particular amplifier, I would fuse each speaker with a 2A, fast-blow fuse. This should protect them from power output excursions beyond 25-30 watts (approximated for a 12V power supply), which is fairly typical for lower end automotive amplifiers.



However, if it were me, I would wait and install all system components at one time. It just makes sense to only tear apart the interior once instead of twice. (And I would still recommend fusing the speakers - just increase the size proportionately for your new amplifier's capacity. )



Hope this helps,

John