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My alpine keeps shutting down when the volume is turned up past 20. Plus I have no sound coming out of my subs. I tried switching rca cables. And I sent my amp off thinking it was my amp. Their is a little power to subs but not enough to get the subs to move but you can feel power in the subsif you touch them. If you turn it up past 21 max gain is 35 it clips out and turns back off and turns back on

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So it turns off suddenly and then the next second it turns back on and starts playing

from that and personal expericance i belive that the radio system (radio and amp) is not reciving enough power

is this radio inside a car
if so what car

what i would do is attach bigger thicker wires to the positive and negative of the amplifier
direct from battery

positive of battery>>>> positive of amp
metal grounding point on car>>>>>> negative of amp
(do not use negative of battery use the metal of the car)

Posted on May 14, 2010

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Why does my MCS sub 10 not turn on?


Is that the right part number, MCS 10, and not MCS100?

The MCS systems use a basic sub which is matched to the satellites. There's very few controls other than level on the MCS100. So as long as the power light is illuminated the there's very little other than the volume control that could be set wrong on the sub. So what it comes down to is either

  1. a blown fuse (no power at all at the sub);
  2. a broken input (#1 cable, #2 sub input socket, #3 blown sub plate amp);
  3. incorrect connection at the receiver end or the wrong settings

As a quick test, unplug the sub cab from the amplifier/receiver end. Switch on the sub and turn the volume down all the way. Briefly put your finger across to short the RCA/phono tip and ring. The sub should make a buzzing sound. You now know that the sub is working and the cable appears to be okay

Switch off the sub and reconnect the phono/RCA to the sub out socket on the receiver. You now know it is connected correctly.

Go in to the receiver's menu and check the speaker settings. Is subwoofer present? Yes/No

Are the satellites all set to Small? (they should be with this system)

Are you playing a 5.1 source in DD or DTS to ensure that the sub gets a signal? Play a BD or DVD.

On the speaker balances, is the sub channel set to 0dB?

As long as all the above is set as listed, then the only things stopping the sub working would then be insufficient volume at the sub's Vol control (so increase it), or an intermittent cable connection (wiggle the cable), or a broken subwoofer out signal at the receiver.

Aug 06, 2014 | Boston Acoustics Audio Players & Recorders

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What is the best amp for one 15" alpine type r?


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

Jan 31, 2012 | Alpine Type-R SWR-1242D Car Subwoofer

1 Answer

Ok i got a mtx 12' 500 sub matched to a alpine mrd-m500 mono amp. The deck powers the 4 speakers, as i turn the volume up on my deck (alpine cde 100) the sub/amp cuts out at around volume 20-22 and E-3...


Sorry,after rereading your problem,I gave a wrong answer.Do you have the deck sub RCA pre-amps connected to the amp,then the wires from the amp to the sub?If you do,you need to check what the sub and amp are rated as such as,peak or rms.They are 2 completely different meanings.Greg

Feb 11, 2011 | Alpine MRD-M500 Car Audio Amplifier

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Hey I have an Alpine CDA-9851 CD Player and was wondering how to hook up my two 10" Kicker subs, since there is no subwoofer connection on the back of the player.


First to start you need an amp something that is a little stronger than your subs. What you want to do is 'T' off your speaker wires into RCA's to hook up into the amp. There is a device you can buy or you can cut some RCA cables. There are a few down sides to do it this way because as you turn up the volume the Subs will get louder and start to distort a lot faster than hooking up proper. The best way to do it is to get a deck with RCA sub outputs. Good Luck

Mar 25, 2010 | Alpine CDM-7874 CD Player

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Insignia NS-C5112 manuel. new sub getting too much sound through rca wires when turned up. sub amp shuts down. need to tune down audio in rca cables


does your new sub have a volume or gain control? If your getting the signal source from the line outs, then the volume level there is constant. You need to set it up so that it can be controlled by the main volume control.Or you might need a control pre-amplifier before your sub

Aug 18, 2009 | Car Audio & Video

1 Answer

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.

Jun 20, 2009 | Alpine Type-R SWR-1222D Car Subwoofer

1 Answer

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.

Jun 10, 2009 | Alpine Type-R SWR-1222D Car Subwoofer

1 Answer

Alpine type-r 2ohm dual voice coil help


try reconnecting your rca's from the deck to the amp when finished wire one speaker positive to positive on left channel and negative to negative on right channel then connect the 1st subwoofer. if all power and sound is fine and working turn off power to amp and connect negative terminal of 1st sub to positive on 2nd sub and positive from first sub to negative on second crossing the wires runs the speakers in series another way to try is parralel the speakers wiring by connecting positive left channel output of amp to positive on 1st sub same with the negative then splice positive to positive on second sub and same with negative.

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Alpine MRD-M1005 Subwoofer Amp Problem


He may be right! You might try finding a new source of contact for your ground cause it may not be sufficent enough to ground to, also make sure that no wires from the back of your radio have any wires sticking out touching other interfering things that could possibly be causing the noise

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1 Answer

Alpine mrp-m650 amp cutting out


Some AMPs have a thermal cutout, that switches the amp off if it gets too HOT.

But this sounds like your amp or sub is screwed, either there is to much resistance in your sub, eg: Burnt voice coil, carbon builds up on the coil stopping the sub from moving freely. Push on the cone of the sub & listen for a scrapeing sound.
or test this by continuity testing the sub terminals & pushing the cone if the BUZZER on the MultiMeter cuts in & out as you push & release then your sub is screwed. ( a certain amount of repeatative pushing it may free up the voice coil.)

or your Amp may have blown a internal fault that will have to be sent of for repair.

Or you have a incorrectly rated fuse for your system,

or the battery cant kope with the power surges???
THIS DOES NOT APPLY TO YOU AS YOU HAVE A POWER-CAP!!!

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