Question about Sony Xplod 1100 Watt Max 10" Subwoofer, XS-L100P5W Car Speaker
I have two 10" Pioneer IMPP subwoofers in a sealed box with a 500 watt Fuel-D amp running to them. I have had them for about 4 months. Also, I usually have my music turned up kinda loud, but not too loud, like 18 on my deck. When I have my music low the subs work fine the whole time. However, when i have it turned up the subs will work fine for awhile but then one of them stops working after about 8-10 minutes. If i push the sub in it starts working again for like another 8-10 minutes, then cuts off again. However, the other sub is working fine all the time. Please tell me what I should do. The subs are 250 watts RMS and 500 watts max.
It sounds like u blew them or the voice coils could be messed up here is one way to check take the woofer out of the box and look at the coils it should be ornge and then smell it if it smells like fire it might be going bad thats the reson it is frezzing like that let me no what happens and please rate me
Posted on Apr 07, 2008
SOURCE: High x-max vs. high sensitivity
Sensitivity is a representation of efficiency. The higher the efficiency, the better the sound quality.
Xmax is a measure of the "throw of the cone peak to peak. This is a direct representation of the volume of air the subwoofer will displace..
A High X.Max subwoofer will displace more air - and therefore produce more SPL in a vented enclosure.
Sensitivity on these subs aren't crucial, because the customer is looking for LOUD and will purchase a large class D Mono amplifier to power it - characteristically low in sensitivity as well due to the way the power is inverted. Highly efficient, yet low sensitiviy.
I am definately a basshead! My show car has (4) 15" Cerwin Vega Stroker PROs. (one of the most highly EFFICIENT high xmax subs available) (86dB). (36-44mm Xmax (adjustable for SQ or SPL)
If you are looking for SPL, High XMax, Low sensitivity, and lots of power is the way to go. Generally, to increas SPL by 3dB, yuo must either increase surface area of driver 2x or double the input power. Slot ports, aeroports, and loaded horn ports can also increase your dB level by up to 3dB as well.
Properly constructed enclosures have an effect as well. Instead of wasting some of your power on vibrating the enclosure, it should be braced properly to reduce the wasted energy.
All of these tips will add tou your satisfaction of the product. You can make a $100 sub sound phenomenal in a proper enclosure, and a $400 sub sound like $hit in a prefab or poorly constructed one.
Your original question - with all things equal except the subwoofer, the subwoofer with the higher Xmax should yield the most SPL - due only to the fact of air displacement.
If you have additional questions or need clarification dont hesitate to ask.
Posted on Jan 15, 2009
You are correct. The p1 12" is 150Watts RMS and 300Watts peak power handling.
Powering the subwoofer over 300W for a short length of time will heat up the voicecoil and you will blow the woofer.
The p1 10" (if that was your previous model) has the same power handling.
The purpose of moving up to a 12" is to displace more air.
It takes less power to move the same amount of air when you increase the cone area.
In theory - in a properly constructed enclosure - with the proper amount of airspace - tuned to the Fs of the woofer - a 12" woofer will have a greater output than a 10" with the same amount of power applied.
So, your 12" p1 will displace almost 1/3 MORE air - and should be louder than the 10 at the same amplifier gain setting.
Hope this helps clarify your connundrum.
Thanks for using FixYa - a FixYa rating is appreciated for answering your FREE question.
Posted on May 05, 2009
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