My car stereo shuts off when i adjust the volume of my amplified subwoofer
The brand of my amplified subwoofer is AVT, it has an 8' woofer speaker and i just fixed it by myself into my truck following the instruction manual of the unit.my problem is that every time i adjust the volume of my subwoofer my car stereo shuts off. please advice me how to fix it thanks and more power.
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Yes, for best results. Your subwoofer should have a seperate amplifier because it has low pass filter that produces low frequency signals. It is done by connecting the sub woofer output to the input signal of the amplifier and then connecting the output signal to the subwoofer speaker terminals. Hope this helps.
First you need to determine what kind of subwoofer it is and by that i mean, is it a dual voice coil subwoofer or a single voice coil sub woofer.
Dual voice coil(DVC)
Depending on how many Ohms each voice coil is you will have the amplifier drive a specific load (4OHM stereo (75 RMS x 2) 150RMS total power / 2OHM stereo(100RMS x 2) 200RMS total power) Connect each voice coils separatley to each speaker output of the amplifier for this configaration. Always making sure that the + & - of each voice coil go to the coresponding location of the speaker outputs of your amplifier.
If your sub woofer is a single 4OHM voice coil then your cables should be connected to the coresponding location on your amplifier which states "BRIDGED" It is marked clearly on the speaker outputs of your amplfier.
If it is a 2OHM then do not connect it to the amplifier. The specific amplifier is not stable at 2OHMS bridged and will most likely get damaged if you try to operate it at that OHM load.
On the side of the amplifier where the adjustments are there is a switch that indicates X-OVER. (LPF/HPF/FULL) Make sure to set it to LPF (Low Pass Filter). (not doing so can damage the subwoofer)
On the left hand side of the X-OVER there is the adjustment for the LPF (30-250) the best setting would be at the same frequency that your speakers stop
If your speakers have a frequency response of 60Hz to 20KHz then setting your LPF to roughly 70 to 80 will be ideal. The rule is that where one speaker drivers frequency ends, the other must continue in order to complete the full range of audible frequencies.
if you have any more questions feel free to ask.
What ohm is your sub running at. Sounds like your runnig your amp to low an impedance causing it to thermally shut down, when it cools a bit it turns back on. Either that or you have wires crossed somewhere. Check your wiring and make sure the load of the speaker does not fall below the rcommended ohm of the amp. Usually 4ohms mono and 2ohms stereo
The "CUR" display means that the amp is drawing excessive current and the protection circuit is activating. Too low impedance or shorted speakers will cause the amp to draw excessive current.
The Alpine V12 is a Class D mono amp with only one set of speaker outputs. All versions, M301, M501, and M1001 are only stable to 2ohms. Assuming that all 6 of your connected subwoofers and speakers are 4ohm and they're all connected in parallel, the amp sees a .67 ohm load, far below it's rated impedance.
When brand new, the amp could probably operate at low to moderate volume levels without drawing excessive current. But as electronic components age, their tolerances change and they become less able to withstand excessive current or mismatched impedances.
I'd get a 4-channel amp and drive the 4" speakers off the front channels and the 6X9's off the rear channels. And just power the subs off the V12 making sure that they are connected to show a minimum load of 2ohms.
If your planning on using a stereo system in your car or home you need to follow some rules otherwise your just wasting money. The watts of a speaker means how much power it can handle. The higher the number the more power it can handle, and usually the louder it can get without distorting. If your amp has more power or close to the wattage rating of the speaker you will blow the speaker, it can even get so hot it ignites. The amount of ohms is the electrical resistance the speaker provides. House speakers usually have 8 ohms where car speakers tend to use 4. 8 ohm stereo means your left and your right are separate channels and each speaker has 8 ohms. 8 ohms bridged means you bridge the left and right channel to increase the power output of the amp and you have to use either 1 8 ohm speaker, or 2 4ohm speakers in parallel to prevent damage to the system. Same goes for 4 ohms. If I remember correctly you want your sub(woofer) to have a wattage rating 20% higher than the amp. Remember if the speaker overheats its no good, but most amps if they overheat they just shut off until they cool off, but only if they state they have a thermal overload protection.
It sounds like you may have the load impedance too low.
How many voice coils per woofer?
How many ohms is each coil?
If you have DVC woofers, are the coils for each woofer wired in series or parallel?
Are the speakers wired in series or parallel.
Let me know if you need me to clarify anything.