2 amps

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nixon75

Member - Posts: 27

Joined: October 23, 2005

Location: Philippines

Posted: December 30, 2005 at 8:37 AM / IP Logged

i have a VPw460 subwoofer 2 ohms DVC 1800Watts rms. can i use 1 amplifier to power each voice coil? meaning i'll be using 2 amplifiers. does this mean that each voice coil is 900Watts rms?

nixon75

Member - Posts: 27

Joined: October 23, 2005

Location: Philippines

Posted: December 30, 2005 at 8:39 AM / IP Logged

and will i be needing capacitors for this setup?

darreng

Member - Posts: 38

Joined: December 12, 2005

Location: United States

Posted: December 30, 2005 at 9:52 AM / IP Logged

just get an 1800 amp and a cap would be a good idea

DYohn

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Joined: April 22, 2003

Location: Arizona, United States

Posted: December 30, 2005 at 1:35 PM / IP Logged

You can use two amplifiers, but that can generate cancellation and loss of output if they are not exactly matched. You'd be much better off using a single mono amp. You probably do not need a capacitor, but with an 1800 watt system you definitely need a high-output alternator.

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hobobasher

Copper - Posts: 66

Joined: September 23, 2005

Location: Rhode Island, United States

Posted: January 02, 2006 at 6:50 PM / IP Logged

Just use a cap. Generally Ive found for every 1000 watts you need a 1 farad cap. You could just go with a h/o alt but personally id do both id add a cap and id repalce the alt but thats just me. At the least use a cap

arrow12

Silver - Posts: 527

Joined: October 06, 2005

Location: United States

Posted: January 02, 2006 at 6:54 PM / IP Logged

Caps are mostly a drain on a system if the power isn't already there. I'd get a high output alternator in your situation. Do a search in this forum for "caps" to see what everyone has to say about them. Caps are mainly just a band aid for the problem.

That's my opinion. Take it, leave it, or correct me.

hobobasher

Copper - Posts: 66

Joined: September 23, 2005

Location: Rhode Island, United States

Posted: January 02, 2006 at 6:57 PM / IP Logged

Yes caps are basicly a band aid but if you look 90 percent of competion vehicles use them so may i ask why its not a good idea to use them in your daily driver? I used a 1 farad cap in my truck and it accually made the subs sound better since the ams were getting more power. Now i have a 25 farad cap and have 2 2000 watt amps hooke up to 4 mtx subs and it works great i have a high output alt. But if i just had the alt theres no way it could power both those amps and the 800 watt amp pushing the front door speakers and the rear door speakers.

arrow12

Silver - Posts: 527

Joined: October 06, 2005

Location: United States

Posted: January 02, 2006 at 7:05 PM / IP Logged

Actually the alternator is powering all of that. How do you think the caps get filled? I understand what you mean though in your case. You also have a high output alternator. It has enough amps to fill the caps over and over again. In nixon75's case, I don't think he has a high output alternator. 1800 watts on a stock alternator will be hell for the alternator. Add a cap to keep filling and you have a worse situation. He doesn't have enough power in the first place. It's alright to use the cap if you have the power, but he doesn't have the power.

That's my opinion. Take it, leave it, or correct me.

hobobasher

Copper - Posts: 66

Joined: September 23, 2005

Location: Rhode Island, United States

Posted: January 02, 2006 at 7:07 PM / IP Logged

Yeah isee your point but i did tell him he sdhould do a combonation thats what i did in my truck it worked wonders and a h.o alt isnt that expensive its worth it

arrow12

Silver - Posts: 527

Joined: October 06, 2005

Location: United States

Posted: January 02, 2006 at 7:11 PM / IP Logged

I agree with you. I just wanted him to understand that he needed the power to start with.

That's my opinion. Take it, leave it, or correct me.

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