need 500 watt subwoofer amp kit

gompka · 17th February 2006, 11:04 PM

I have tried searching but its just too hard to sort through all of the info that pops up.

I need a 500 watt amplifier to power my home subwoofer. It can be either 500 @ 8 ohm or 500 @2 ohm which ever is easier. If there is a kit that is just plug and play that would be great. I am pretty good with electronics but i suck at say etching pcb's. Is there any kit or project with a preprinted pcb that will work for me?

Thanks,
Dave

myhrrhleine · 18th February 2006, 06:45 PM

500Watts is an extreme.
Sure it's possible, but difficult.
Why not back off a bit?
Or, bridge a couple of smaller amps?

Bazukaz · 18th February 2006, 06:54 PM

Why do you need so much for a home subwoofer ? The power output at low frequencies is usually not so high - if you want a balanced system.

gompka · 18th February 2006, 07:13 PM

is it overkill? I have my main speaker running 150 watts rms each channel and they get really loud. The subwoofer is an eclipse 88120 dvc with 500 rms and 1000 watt max rattings. I ran the subwoofer with 1000 watts rms in the car and it didn't over power the rest of the soundstage and I figured it was the same in home audio. At the very least ported i'm thinking 250 watts for the subwoofer? If there were some kits i could bridge for this amount of power that would be fine also.

gompka · 18th February 2006, 07:18 PM

maybe it would be better if i looked into the class d/t section? I am not sure if those amplifiers would make a better newb project. I am a newb but have a neighbor who fixes electronics that would be able to help me if i got stuck

Bazukaz · 18th February 2006, 07:35 PM

For me it is very strange.
Usually , subwoofer needs LESS power than main system.Unless you miss the box for it , or it works out of phase with the main system.
For my DIY subwoofer , it needed several times less power than main loadspeakers.I needed 2x70w for main speakers and around 20-30W for a sub.
For sure , a lot depends on sensitivity, crossover point,etc.
I have seen ~500W kits on the net , but now i don't remember where.

Something like LM4651/52 is closer to the power you need.Maybe you can get the boards from somewhere.

Regards ,
Lukas.

velmeran42 · 18th February 2006, 08:57 PM

A 41hz Amp2 would do the trick with some component upgrades, although it'd be a little bit of a waste of such a good sounding amp. I don't personally know any other kits that can push that much power, although there are some designs laying around if you want to point-point or perfboard it.

SamL · 19th February 2006, 01:29 AM

What about 400w into 4 ohm?

Elliott Sound now carry the ColdAmp Class D Amp module that is suitable to drive sub and is not too expensive.
http://sound.westhost.com/project116.htm
http://sound.westhost.com/project114.htm

Have fun...

17th February 2006, 11:04 PM	#1
gompka diyAudio Member Join Date: Jun 2005 Location: .	need 500 watt subwoofer amp kit I have tried searching but its just too hard to sort through all of the info that pops up. I need a 500 watt amplifier to power my home subwoofer. It can be either 500 @ 8 ohm or 500 @2 ohm which ever is easier. If there is a kit that is just plug and play that would be great. I am pretty good with electronics but i suck at say etching pcb's. Is there any kit or project with a preprinted pcb that will work for me? Thanks, Dave

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18th February 2006, 06:45 PM	#2
myhrrhleine diyAudio Member Join Date: Jan 2006 Location: Avalon Island	500Watts is an extreme. Sure it's possible, but difficult. Why not back off a bit? Or, bridge a couple of smaller amps?

18th February 2006, 06:54 PM	#3
Bazukaz diyAudio Member Join Date: Nov 2005 Location: Vilnius	Why do you need so much for a home subwoofer ? The power output at low frequencies is usually not so high - if you want a balanced system.

18th February 2006, 07:13 PM	#4
gompka diyAudio Member Join Date: Jun 2005 Location: .	is it overkill? I have my main speaker running 150 watts rms each channel and they get really loud. The subwoofer is an eclipse 88120 dvc with 500 rms and 1000 watt max rattings. I ran the subwoofer with 1000 watts rms in the car and it didn't over power the rest of the soundstage and I figured it was the same in home audio. At the very least ported i'm thinking 250 watts for the subwoofer? If there were some kits i could bridge for this amount of power that would be fine also.

18th February 2006, 07:18 PM	#5
gompka diyAudio Member Join Date: Jun 2005 Location: .	maybe it would be better if i looked into the class d/t section? I am not sure if those amplifiers would make a better newb project. I am a newb but have a neighbor who fixes electronics that would be able to help me if i got stuck

18th February 2006, 07:35 PM	#6
Bazukaz diyAudio Member Join Date: Nov 2005 Location: Vilnius	For me it is very strange. Usually , subwoofer needs LESS power than main system.Unless you miss the box for it , or it works out of phase with the main system. For my DIY subwoofer , it needed several times less power than main loadspeakers.I needed 2x70w for main speakers and around 20-30W for a sub. For sure , a lot depends on sensitivity, crossover point,etc. I have seen ~500W kits on the net , but now i don't remember where. Something like LM4651/52 is closer to the power you need.Maybe you can get the boards from somewhere. Regards , Lukas.

18th February 2006, 08:57 PM	#7
velmeran42 diyAudio Member Join Date: Jan 2005 Location: Issaquah, WA	A 41hz Amp2 would do the trick with some component upgrades, although it'd be a little bit of a waste of such a good sounding amp. I don't personally know any other kits that can push that much power, although there are some designs laying around if you want to point-point or perfboard it.

19th February 2006, 01:29 AM	#8
SamL diyAudio Member Join Date: Jun 2004 Location: Wgtn	What about 400w into 4 ohm? Elliott Sound now carry the ColdAmp Class D Amp module that is suitable to drive sub and is not too expensive. http://sound.westhost.com/project116.htm http://sound.westhost.com/project114.htm Have fun...

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