I had the mrp-m500 with my 15" alpine type R sub, but its not working anymore. the blue light keeps dimming out and i dont hear base anymore... so i want to try a different amp. my brother gave me a alpine mrp-m650 but i dont want to blow my sub. would that sub be alright?
Sub spec 250watts per coil you should be just fine I have 2 typr 15s on orion hcca 2500 1 and it kicks a$$ thats 1000 watts over the rated limits of the subs only shut the amp down once these subs can take a lot more power than they say just use your common sence with the volume and gain levels
SOURCE: Sub cutting out
500W x 1 @ 2ohm
How did you "switch the sub from 2ohms to 4 ohms"?
If you have the swr-1222d as listed, your only options are wiring 1 or 4 ohm, as it is a dual 2 ohm voicecoil.
If it was wired @ 1 ohm - you may have already done the damage to your amplifier - as it is not rated @ 1ohm mono.
There are 3 reasons the amplifier will go into protect mode while playing...
Thermal - overheating due to too low impedence.
Ground Loop/Short Circuit - Blown voicecoil, bad amplifier ground, tinsel slap, etc.
Overload - Impedence not within specs.
Disconnect every wire (including RCAs) from the amplifier. Reconnect only power and ground - make a short wire to loop from power terminal to remote terminal.
If the amplifier stays on without turning off - remove the jumper, add the remote wire, and try again.
If it turns off - the problem is internal and needs repair.
Still on? plug in 1 rca, and re-try.... then the other.
Still going??
Now use an Ohm Meter - or Digital multimeter set to ohms 20, and check both voicecoils. They should read 2ohms +/- .5ohm.
If they are OK, wire up the 4ohm load (series the voicecoils) and turn the gain on the amplifier to 1/2.
Retry -
If the amplifier continues to fail at higher volumes - the thermal protection relay has become weakened because of your improper wiring, and will need to be repaired to solve your issue.
Thanks for using FixYa - a FixYa rating is appreciated for answering your FREE question.
SOURCE: Subs cut out at low volume no matter the settings
I'm not a complete audio expert but it sounds like somethings over heating or you have a blown out put bridge.
SOURCE: I have a Alpine type r 10
i had the exact same problem the other day with my system, exact same as yours but my type r is a 12 not 10. anyhow all i did was swap my ground wire with a new one, and grounded it in a different spot in my trunk, my head unit had alot of a/v plug ins in the back and i found i had those hooked up incorrectly as well so i got those in line and everything worked well after that, im not sure if it was just the a/v cords or if the ground i swapped had anything to do with it, but either way hope this will help ya out.
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i have a Type-R SWR-1242D not a 1222d
the mrpm650 should be fine positive to positive negative to negative thats 100watts more than the sub should sound good
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