What is good for a speaker output power in a TV? I have seen 10W and 20W. Which is better?
At the risk of being simplistic, 20 watts is double 10 watts, which will give you a 3 DB power boost, thus doubling your power. All things being equal (i.e., the exact same speakers), 20 watts equals more audio output (louder). There are other factors to consider, though, mainly the speakers. If it's a smaller size flatscreen, they rarely come with decent speakers. They're often a very thin oval shape, and sometimes pointed down instead of out toward you. My big screen Samsung has nice sized speakers, but they're in the back pointed toward the wall. Not great. Best thing to do is check any TV you're considering while it's operating in a store, without regard to the audio power rating.
Speaker / receiver home audio wattage?
You raise a good question that is somewhat complicated to give you a complete answer. I do not believe their is a uniform baseline for receiver wattage output. All companies can claim what is rated per channel, but may test low or high on average to what is advertised. Speakers will have 4, 6 and 8 ohms. If my memory serves me correctly, the higher the ohms the easier for the receiver to push the speakers. Someone, stated that watts on a non-powered speaker points to capacity. This number represents, what that speaker can handle at a constant rate of power and its constant peak power before something goes wrong. Again, I am stretching back to my childhood hear, but, I can recall, how important it was then and it is now to have a low total harmonic distortion rating, in order to not blow the speaker set at peak power. I doubt now, this would be an issue, the market has evolved, nonetheless clean power relative to low distortion is also a really important aspect, not mentioned in your question, but germaine to the the answer. A speaker is an air pump. If you open the speaker grill and turn up the volume 50 to 85% high, observe if he speakers are being pushed, physically pushed. If they are being pushed and the sound is crisp and clear, minus instruments you can make a good decision that your combination or receiver and speakers are on par to give you their best effort in music. I know it is low tech, but this approach is the work around to really know what you are getting relative to watts and speaker capacity. If someone you know has meters to gauge sound, then you are right where you need to be. A preamplifier tends to have a uniform true rating, add that to your receiver, like the idecco ipod amp rated at an additional 40 watts, this will only help great sound, great happiness and sonic joy. After all, isn't that the point here? Best.
Why do amplified speaker which claims audio power (500 W RMS) disagree drastically with electrical watts used (65W at max loudness)?
The AC power consumption is a long-term average of the power used when an amplifier is turned up just loud enough to clip on occasional peaks. Since the amplifier spends most of its time at lower powers, the average power of music turns out to be about 1/8 of the maximum undistorted power. Powered speakers are designed to avoid severe distortion, both to protect the drivers, as well as to have more pleasing sound. Marketing hype does exist, but it’s actually possible for an efficient amplifier that can put out 500 watts without distorting to draw 1/8 of this power long-term due to the various limiters that are installed to prevent distortion as well as driver damage.
Can you use ordinary power wire as speaker wire???
i've got some 8 gauge power wire that was used for an amplifier. and i was just wondering if i can use that power wire on my subwoofers. the reason i want to use it is because i have 2 1000watt RMS subwoofers. and i am sending them the full 1000watts RMS to each one. but i only have 14 gauge speaker wire. so obviously i need somethin a little more beefy. so would the 8 gauge power cable do. or am i going to need to buy myself some thicker "speaker" wire
What are the differences between a 4 ohm amp and a 8 ohm speaker?
Very simply, their resistance/impedance. A 4 ohm speaker has less resistance/impedance and an 8 ohm speaker has around double the 4 ohm resistance/impedance.What does this mean for to the owner/user? It means the amplifier used should have been designed too work well with the speakers resultant nominal impedance. Most of today’s amplifiers should work well with either. It also means that you have to be careful how you wire them up. Some amps allow more than one set of speakers to be connected to the amp, but somewhere in the small print it warns not to do that with 4 ohm speaker systems, but it would be OK if two 8 ohm speakers sets were connected.This is because the lower resistance/impedance allows the amplifier to work at a higher power output, and if placed in parallel, two 4 ohm sets will result in the amplifier seeing only 2 ohms (nominally) and might push the amplifier beyond its safe operating range and at the very least possibly blow a fuse when pushed hard.Always make sure your amplifier is capable of handling the speaker impedance before connecting them of for use.Happy listening!
What does 150-Watt home theater audio speaker mean?
Any type of speaker wattage rating is meaningless. Forget about the wattage rating, the two specifications that you need to know to determine the right amount of power and quality of power is the efficiency and impedance. Efficiency is how loud the speaker will play with a given amount of power. Generally its measured at 1 meter with 1 watt of power. For every 3db increase (which is double the loudness) you need to double the power. The higher the efficiency the less power is needed to get to a given loudness. Impedance determines the quality of power needed. 8 ohms is the easiest impedance for a amplifier to drive. As the impedance drops or rises from 8 ohms it requires more current from the amplifier. Anything below 4 ohms, or above 12 ohms requires a better quality amplifier as this puts more a demand on the amplifier. A good quality amplifier can almost double its rated output as the impedance drops or rises, and hopefully is stable to drive 2 ohm loads. The thing is all speakers impedance vary with frequency so they are not a constant impedance. Its good to know what their maximum impedance range is so you can be assured you choose the right amplifier for the speakers. Kevin 40 years high end audio video specialist
How do I make an audio amplifier which works on 3v but gives 50w power to a speaker?
In short, you can't give that much power to a single speaker. If you supply 50w to a coil, you will make it a lightbulb!You need multiple speakers operating in parallel, thus, if you do the math 3v to generate 50w would need 17amp current. So you need almost 10 speakers with 2amp rating. For that you need each speaker to have 1.5 ohm resistance.Good luck!
Can Audio cables be used for electric power?
Wow, everyone here seems to be in the qualified “yes” arena. Well I have to disagree and say absolutely NO because your question begs the question of what you know and what you don’t know. Here is a classic condition of what you don’t know WILL HURT YOU!. The other answers are troubling to say the least because the level of knowledge the commenters are high and have assumed you have some background knowledge about “electric power” which to me by your question clearly indicates not.1 You never specified what kind of audio cables. Are we to assume speaker cables? Microphone cables (and what kind)? Guitar cables? RCA cables? Headphone cables? A lot of these cables only have voltage ratings of 300V max before they will arc over and melt. So if you're intending to put even a standard 120V AC through them you have exceeded the maximum breakdown voltage of the cable (339VP~P). Don't get me started on the EU household voltages…2 You never state what “electric power” you intended. Household power? Battery power? Door bell ringer power? PoE power? All of which is again a categorical no. You can’t do that. Why, because you never specified voltage and power requirements of your load. And finally how far your destination load is from your power source. (duh) Very big question marks here making the answer to your question an emphatic NO! You can’t use audio cables for electric power.
Car Stereo---Do door speakers work better with a power amp?
an amp would make it a sound a lot better, but i recomend a different amp than the one ur using on ur 12, different size speakers run on different frequecies, i would recomend a 2 channel, 500 watt amps with a built in crossover if u want big noise, or if u just want them as a reference get a 2 channel, 200 watt amp with a crossover. u gotta remember that some speaker reach certain decibles, if ur speakers can go higher than 90 db's it won't matter if u use a million watt amp,it would be like having a ferrari(amp) with a pinto engine(speaker) look at the specs of the speakers online and work from there, and it's important to tweak the crossover to the right frequency to maximize the highs,mids and lows. good luck