Question about Kenwood 12" 4-Ohm Single-Voice-Coil Subwoofer
Hello,i have 2 audiobahn alum 12" subs and would like to buy an amp to get the most out of them and a wiring diagram to assist,any advise would be greatly appreciated.
Also- get a voltmeter to check the ohms on your speakers before hooking them up. If you want extra power, and your amp can handle it, you can wire the subs down or in parallel. This is where the voltmeter is needed. check your amps rating and match it closely. For instance if your amp can handle 2ohms mono. You would wire two (single voice coil) 4ohm subs in parallel, and connect that to the amp. But if you have dual voice coil subs you will need to wire the subs differently. For dual 2ohm subs each sub would first be wired (with a thick speaker wire). Take one positive pole on the sub and wire it to the negitive pole of the opposite voice coil. Which should leave a positive from one voice coil and a negitive from the other. With a dual 2ohm subs you will see 4ohms, and with dual 4ohm subs you will see 8ohms and so on. Once you have one sub done you need wire the two subs together and use the same procedure (as if each sub is a voice coil) to determine the overall load on the amp. Your amps Ohm rating will determine which way to wire your subs. Example- If you have dual 4ohm voice coils and your amp will handle a mono 1ohm load. It will put out much more power at 1ohm than if you wired them to a 8ohm load. In fact the power output is determined by resistance (ohms). Except a few amps like JL Audio, most amps will follw this rule. A 100 watt amp that is rated at 100 watts at 8ohms mono, and is capable of a 1/2 ohm mono load (very important). Will double it's output everytime you drop the ohm load in half. i.e.-
8ohms=100watts (all numbers are mono ratings)
THIS INFORMATION SHOULD BE USED ONLY WHEN YOU ARE ABSOLUTLY SURE YOUR AMP IS RATED TO THE OHM LOAD YOU GIVE IT OR IT WILL BLOW UP!!!!!!!
I won my first SPL competition using this formula. I entered a 150x2watt amp class and wired my amp down to a 1/2ohm mono load thus making a 150x2 amp push 1200watts! (I used 2 - dual 2ohm voice coil 15" CV Strokers wired in parallel.)
PLEASE BE CAREFULL!!! there are only a few amps I know of that can do that and survive. The only other downfall (besides reliability, heat, and warranties) is there will be a corresponding drop in sound quality. This begins a whole other subject so I will just say this. This drop in sound quality is sometimes not noticed due to the nature of subwoofers (especially in cars). I hope this adds to the above info and further answers your question. For extra info please contact me @ firstname.lastname@example.org thanx.
Posted on Mar 26, 2009
Get an amp with at least 200 Watts RMS. The RMS value is what is important about driving Subs. This could be proclaimed to be a 1000 Watt amp. REad the RMS value.
Wiring. It is better to series your Speakers to give them and your amp more reliability,
Get a Mono or Bridgeable amp. If it si bridgeable, BRidge the output as described in the manual you get. Some Amps have a diagram right on the output..
AMP+ to Sub1 +
Sub1 - to Sub2 +
Sub2 - to Amp -
Get a 4 Guage wring kit. Run your power wiring down the Drivers side, and Audio signal wiring down the Passenger side, keep the two separate.
Posted on Nov 28, 2007
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Posted on Jan 02, 2017
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