How do I know how many "Watts:" my factory installed radio has?

Question

I purchased a 2007 Accord special edition (3rd level up but not the nice one) Standard Audio package 6 speaker 6 disc changer. I want to put in new speakers but want to make sure that the radio kicks off enough juice so that its worth it. Can anyone tell me what the specs are?.

What does the Watts mean?

From Honda it says 120 Watt system.
Does that mean since its 6 speakers its 120/6= 20 WAtts? isnt that alot?

Answer 1

The short answer is that you can't tell in any meaningful way from the manufacturer's information, and no one else will be providing that information (unless you get some load resistors, an oscilloscope and voltmeter and do your own testing).

When an amplifier manufacturer rates power output, they should be following a set of standards so you can compare the ratings between two amps: things like frequency range, load impedance and distortion ratings are variables that can change an amplifier's tested output rating. You can't compare two amplifiers very well unless they're rated using similar parameters. Most reputable after-market audio companies will provide the power spec parameters, because independent reviewers will do the testing after the product is released anyway.

For a car manufacturer, the wattage rating is nothing more than a marketing tool--they'll never provide more information than just a wattage number, and independent labs don't bother doing testing on a product that comes with a vehicle. So the 120-watt rating from Honda is essentially meaningless.

As far as your Honda's system goes, the six speakers include separate tweeters and midrange speakers in the doors. The two speakers share a single amp channel, so if you're doing the math on the "120 watts", divide it by four, not six; it's really a 4-channel amp running six speakers. But the end result is still a pretty meaningless number.

An educated guess would be that the stock radio in your car is similar to most after-market head units in power output. In the past, an after-market radio could be expected to provide much more power than a stock radio, but that hasn't really been true for several years. So the factory radio most likely produces around 15 watts per channel RMS, which is what a typical after-market head unit provides once you dig past the "max power" hype.

Anyway, you probably won't be hurting anything by replacing the factory speakers with after-market upgrades. When you see a speaker power rating, it's showing you a maximum power number that you can send to the speaker without blowing it. It's not rating a minimum power or a recommended power. Most 100-watt car speakers will work perfectly well on factory radio outputs, and you aren't going to do them any harm by trying them out. (Ignore anyone who tells you that you can blow any speaker by using it with too low power an amplifier; this is not true). Just do your purchasing from a store with a 30-day return policy; if you're not happy with the sound of the speakers in your car, then return them. You'll just be out the time or expense of installation.

Answer 2

RE:
How do I know how many "Watts:" my factory installed radio has?
I purchased a 2007 Accord special edition (3rd level up but not the nice one) Standard Audio package 6 speaker 6 disc changer. I want to put in new speakers but want to make sure that the radio kicks off enough juice so that its worth it. Can anyone tell me what the specs are?.

What does...

Answer 3

20 watts is not a lot of power, but take in consideration the speakers that are installed. if they are, like some american cars, up to 10 ohms then you'll see a lot more than 20W on your aftermarket 4 or 8 ohm speakers. japanese cars are usually cool about that, though, and run stock 4 ohm speakers. the ratings should be printed on the magnet of the speaker. i took out my lancer speakers, they were 4 ohms each, but i replaced the head unit and all anyways. if the amp in the car seems to sound good enough for you, i don't recommend changing the speakers because that system is specifically tailored to that car and any modifications may be difficult or detrimental. if you think the stereo sucks, go for it and all may be well worth it. almost any aftermarket speaker is better than stock!

oh, and a "watt" is a unit of power, usually associated with electricity, and power is a unit of work which is the ability of energy to cause motion (basically). the power in watts is the power that will cause your speaker to move and therefore make sound, but speakers are mechanically limited by how much they can move (therefore how much power they can handle) before tearing themselves apart. 20W is not a lot of power. unless you are super-cheap you'll be hard-pressed to find a speaker that can't handle 20W.

Answer 4

Watts is a measure of power. Watts = Voltage * Current

A good place to go would be www.crutchfield.com they have you pick which car you have then they tell you what you should get and also only display the speakers that will fit in your car without modification

Answer 5

Radio Wattage

Answer 6

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Answer 7

12-20 watts per speaker is very typical for factory systems.

Answer 8

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Answer 9

i would say less than 15watts rms 5-10 maybe. aftermarket headunits only put out 18-22rms edit: it says 120 watts but that is probably the max not the rms.

Answer 10

Wattage is a power term. Just like the light bulbs in your house. A 100w uses more power than the 60w bulbs. As for the radio? Well you could go through the trouble of opening the dash to look at the sticker. Easier option? Check the owners manual for the radio section or call the dealer for the specs.