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Speakers will 30 watt speakers be okay to use with this 40 watt system???

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If modern decent speakers they should have a limiter to protect them

Posted on Feb 27, 2008

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Why is the volume on my JVC KD-SR80BT limited to 30?


The number on the panel of your car stereo is not a measure of actual volume. It is just a comparative scale, with 0 being the minimum and 30 being the maximum. The volume as measured in decibels is dependent on the power level of the amplifier and impedance of the speakers. The internal amplifier puts out 22 watts per channel (50 watts peak) into 4 channels, and there are output jacks for an external amplifier(s). Product specs in link.
JVC KD R850BT

Mar 01, 2015 | JVC Car Audio Receivers

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I have a Sony CDX-M30 Marine Stereo that when the volume is turned up over 20, it cuts off, then comes back on and if you don't turn it down, it cuts off again. Recently, it only has to be around...


One possible cause is a mismatched speaker system. Most stereo equipment specifies 8 ohm speakers to match the 8 ohm amplifier output resistance. A well known electronic formula states maximum power transfer occurs when the resistance in and the resistance out are equal. When there is a mismatch, more power is required to obtain the same sound pressure levels. By turning the volume up higher to do this, the electrical requirements to drive the speakers at that level may be exceeding that which the amp can provide. When this happens, the amp shuts down due to overload. Continued operation in this condition can cause permanent failure.

Another possible cause is the power requirements of the speakers to be driven properly. Larger speakers require more power to move the speaker coil and and cone. Connecting a speaker that requires 10 watts to be driven to an amplifier that provides up to 8 or even 10 watts will require that the amp be operating at 100% of capacity. An amplifier run like this will have a short life.

Connect speakers that match the amplifier's impedance requirements (8 ohm types are pretty standard / common) and will operate with the amount of power (in watts) that the amp can supply. Make sure you're comparing watt ratings in similar units. "P-P" (Peak to Peak), "Peak" (or Max") and "RMS" are typical terms. RMS is the is the most common standard used, but as you'll see below, some manufacturers like to use different units to make their products seem to have more power than they actually do. You can convert easily between the terms like this:

200W P-P equals 100W peak, and also equals 71W RMS

"Peak" is 1/2 the value of "Peak to Peak" (P-P) and "RMS" which stands for Root Mean Squared, is 70.7% of Peak. 200W P-P sure sounds like it's more than 70W RMS - doesn't it? It's all pretty simple once you know. Lastly, the fictional unit "Music Power" can be anything really, but is often either Peak or P-P values. It's just more smoke and mirrors by some manufacturers.

I hope this helps and good luck. Please rate my reply. Thanks!

May 12, 2011 | Sony CDX-C5005 CD Player

1 Answer

Pioneer 1200mp connected properly sound cuts in and out above 22


hello iff you are using low watt speakers this can cause it to break it would be wise to try a higher watt speaker and make sure they are wired as discribed they are all colour coded

Apr 19, 2011 | Pioneer Deh-1200mp Car CD/ MP3 Player

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Can you run a 1200w pioneer sub and 2x9x9 inch car speakers to a 600w pioneer 4 channell amp??


depends on what the RMS is for the subs because although the subs are 1200 watts, there is a minumim standard you have to follow. If you don't atleast run the lowest wattage thru them, then you will most definately damage the speakers....you should also be aware of the fact that your "600w Pioneer-4 channel amp doesn't even push a true 600 watts... Your best bet is to upgrade ur amp, or add an additional amp to your set-up. And you really need to pay close att to over or under running your power to your stereo system because you'll burn out ur altenator rather quickly. Use proper wattage , and you should also look into getting a power-cell which lessens the chances of destroying your altenator and helps to ensure that your stereo system sounds to its full potential.....

Feb 15, 2011 | Pioneer DEH-P6400 CD Player

1 Answer

Volume issues with clarion M309 installed on a boat


Hello jcox7704,

Your head unit is 50 watts X 4 channel maximum power and 21 watts RMS so it's possible that all you need is more power to the speakers. But even 21 watts RMS should be enough for normal speakers. Before investing in an amp, I'd check the speakers and their wiring. Measure the impedance (resistance) at the head unit side to see if they match up.

Hope this helps.

Jul 02, 2009 | Clarion M475 CD Player

1 Answer

New Radio too powerful for 15 Watt speakers?


Hello mike_mccuske,

The OEM speakers will still work OK with your new Pioneer. Just don't turn it up too loud. Of course you'll get improved sound if you replace the speakers. Your Pioneer's RMS power is 14 watts, and the peak (maximum) power is 50 watts. The door speakers in a 2000 Honda Civic are 6.5" and you can get a set of Pioneer speakers, the TS-G1642R's, from Crutchfield for less than $50. Their RMS power range is 2-30 watts and they can handle a peak power of up to 180 watts.

Hope this helps.

May 22, 2009 | Pioneer DEH-2000MP MP3 CD AM/FM Car Stereo...

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I want to upgrade my Kenwood KDC-MP435U sound


1. your charging system is your only limitation for watts but you can add plenty without upgrading it. i'd say 1,000 watts max on the stock batter and alternator with large power and ground cables of at least 4 gauge.

2. yes. using your subwoofer rca outputs.

3. for a subwoofer you should always ad an amp. i'd say a 3-400 watt amp is fine to match up with you kenwood speakers. you will need a small sub to fit in there or maybe one slim enclosure behind each seat with slim 8" subs

Jan 03, 2009 | Kenwood KDC-MP435U CD Player

1 Answer

Need to know


I would recommend running a four channel amplifier using component speakers up front and co-axial speakers in the rear. You can add more speakers up front, but it depends on what you're trying to accomplish in your car. Do you want it louder? Do you want it clearer? Any system will benefit from an amplifier. More power to your speakers will give you better sound because you'll have more accurate control over the speaker cone. This extra power will result in better clarity, not only at high volume, but low volume too.

Sep 06, 2008 | Kenwood KDC-3024 CD Player

1 Answer

Size of speakers and amp recomendation for JVC KW-AVX800


you need to find out what size speakers you have now and upgrade them with that size the amp you get will be based on the rms rating of the speaker. Example if the speakers rms rating is 100 watts the get a amp that puts out between 100 and 120 watts rms also to add bass you could go with a subwoofer that will add all your low freq. If you want something that doesn't take up alot of room try a bass tube you can get one amplifed or not.

Good Luck

Jun 23, 2008 | JVC KW-AVX800 CD Player

1 Answer

Speaker wiring


No degradation. The smaller the ohm, the better the signal ( least resistance ). You and your system should be fine.

Oct 23, 2007 | Tomtom GO 700 GPS NAVIGATION BRAND ONLY...

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