20 Most Recent Alpine Type-R SWR-1242D Car Subwoofer Questions & Answers

I would use this way. It gives you 1.33 ohms to get the most from your amp.

Alpine Type-R... | Answered on Dec 13, 2014

Cut your gain back on the amp. It sounds like they are set too high. Check your install instructions on how to set your gain. If you have a 4 or 5 volt output head unit your will not be at half way. Im running a JL Audio 500 /1 on a skar wwv10 dvc in a ported box. My gain is set about half way & its plenty loud.I have a Alpine 9887 headunit 5 volt output on my RCAsI can take a volt meter & set my speaker output at 45amps & my gain in perfect.

Alpine Type-R... | Answered on Dec 13, 2014

Check your subs impedance to establish speaker is working ,Check crutch field advisors website for sub box construction and detailed wiring instructions.

Alpine Type-R... | Answered on Nov 30, 2014

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

Alpine Type-R... | Answered on Nov 28, 2012

you can connect speakers up any way around ,if its one speaker with 4 connections then these extra 2 terminals are often for a continue through to the next speaker along the line ,.just use a small 9v battery and then connect to two terminals to find a bleep as you touch two of the terminals then you know where to put your wires

Alpine Type-R... | Answered on Nov 28, 2012

check the cables again , and also check cables are working properly or not ..

Alpine Type-R... | Answered on Oct 07, 2012

You have to buy a new one because its coil has been burned. If you use tha woofer with the working coil then it can damage the amp. So try to buy a new one.

Alpine Type-R... | Answered on Aug 23, 2011

i think you will be death when you get hold if you managed to burn a speaker out ,Do what i do and thats listern to the engine as then i know if something is about to fall off

Alpine Type-R... | Answered on Jun 25, 2011

depends what kind of car they are going in and what kind of sound you are going for.
generally speaking ported boxes are louder, if you choose this i would recommend filling box with poly-fill.
non-ported boxes get deeper bass and hit much harder. no matter what set up you choose a good quality box that does not flex is EXTREMLY IMPORTANT. you will want the wood to be at least 3/4" thick and the correct cubic feet.

Alpine Type-R... | Answered on Mar 31, 2011

The subwoofer box ratings for this subwoofer are as follows:
  • sealed box volume: 0.57-1.0 cu. ft.
  • ported box volume: 0.75-2.0 cu. ft.

Alpine Type-R... | Answered on Mar 17, 2011

  • 12" subwoofer with dual 4-ohm voice coils
  • Kevlar reinforced pulp cone with Santoprene™ rubber surround
  • cast aluminum frame with perimeter venting
  • frequency response: 25-500 Hz
  • power handling: 200-500 watts RMS (250 watts per coil)
  • peak power: 1,500 watts
  • sensitivity: 85 dB
  • top-mount depth: 7-5/8"
  • sealed box volume: 0.57-1.0 cu. ft.
  • ported box volume: 0.75-2.0 cu. ft.

  • For rock, i actually have 2 seperate 12's in slot port boxes i built facing forward. Facing forward reduces a little resonance and spl, but keeps alot of that annoying rattle off your tag lol

    Hope this helps :)

    Alpine Type-R... | Answered on Nov 21, 2010

    If they are single voice coil, just hook one up to the amp (bridged) like normal and run a jumper wire from the positive of the sub to the positive of the second one, then do the same for the negative....This will give you a lower ohmage, thus better bass!!!

    Alpine Type-R... | Answered on Oct 20, 2010

    I have repaired this with silicone rubber, also called RTV

    Alpine Type-R... | Answered on Sep 22, 2010

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