Need an amp to power a 10" sub with minimal power usage

 

New member
Username: H20audio

Fort Lauderdale, FL United States

Post Number: 1
Registered: Sep-07
I'm searching for an amp to power a 10" sub on my boat. The trick is, I need something that will do a decent job driving the sub but not kill my batteries too quickly. We anchor out alot with the motors off so I'd like to be able to have music a long time without killing the batteries or having to constantly run the motors. I've got 2 Odyssey PC2150's that will supposedly run 25A for 205 minutes each (205 minutes reserve time). I'd like to get my amps power well under the 25A for more listening time. I only need 200W RMS for the sub. Any suggestions? Thanks!
 

Bronze Member
Username: Thunderb

Post Number: 27
Registered: Sep-07
heres my vote


http://cgi.ebay.com/New-JBL-Marine-MA6002-Boat-Audio-2-Channel-Amplifier_W0QQite mZ300151772627QQihZ020QQcategoryZ39732QQssPageNameZWDVWQQrdZ1QQcmdZViewItem

Or

http://cgi.ebay.com/JL-AUDIO-E2150M-2-CH-MARINE-AMP-AMPLIFIER-2200W-E2150_W0QQit emZ120161655409QQihZ002QQcategoryZ39732QQssPageNameZWDVWQQrdZ1QQcmdZViewItem
 

Bronze Member
Username: Ques07

Post Number: 19
Registered: Sep-07
aren't those a/b class so they use more energy then a better class d... what is the sub you have and what is it dvc or svl... 2 or 4 ohm...
 

New member
Username: H20audio

Fort Lauderdale, FL United States

Post Number: 2
Registered: Sep-07
That JL audio one might be a good choice. The sub is just a 10" bazooka for marine use, sm104 I think. So I believe it's a 4 ohm, but I'll be the first to admit mobile audio isn't my specialty! I was looking at class D amps, but I really don't understand how I would benefit from it. I roughly figured rms watts/voltage would give me an estimate of power consumption. How does it vary between an AB or D amp? Or does a D drive the sub better using less watts compared to an AB? See what I mean, I really don't know what all the differences are. I really appreciate the help though! Thanks!
 

Bronze Member
Username: Ques07

Post Number: 20
Registered: Sep-07
yeah... class ab's are usually only 66% efficient... and d's are 87% or something close... and from what i know they give out more per watt so yeah... but i'm no expert either i was just lookin for help not to long ago myself.. so if i'm wrong...someone correct me...
 

Bronze Member
Username: Thunderb

Post Number: 28
Registered: Sep-07
yeah a class d is the way to go, but trying to find a decent class d for marine use is very hard to do. Besides those amps are small enough they wont pull more than 25 amps.
 

New member
Username: H20audio

Fort Lauderdale, FL United States

Post Number: 3
Registered: Sep-07
I'm not worried about it being for marine use. I'll be installing it down in the cabin so it'll be in a nice dry area. 25A will work, but that only gives me 405 minutes of run time. I'd like to get as low as possible to prolong my listening time.
 

Bronze Member
Username: Thunderb

Post Number: 30
Registered: Sep-07
Then this amp would be an awesome 200 watt rms amplifier made by zed audio for cheap

http://cgi.ebay.com/PLANET-AUDIO-600-WATT-CLASS-D-MONOBLOCK-AMPLIFIER_W0QQitemZ1 90154093467QQihZ009QQcategoryZ64570QQssPageNameZWDVWQQrdZ1QQcmdZViewItem
 

New member
Username: H20audio

Fort Lauderdale, FL United States

Post Number: 4
Registered: Sep-07
Man, I love the price of that one! I don't know Planet Audio, but since you recommend them I assume they're good. At least good enough for me, anyway! I think I'm going to go with that one. I do have more questions though, as I'm really finding this interesting. Am I correct to think a class D 200W will drive a sub better than 200W AB? Also, with this Planet Audio 200W class D, will it ultimately use less power from my batteries to produce the same sound level as a 200W AB would? Anyway, I definitely think you've pointed me in the right direction. I might just buy that thing now. Thanks!
 

Bronze Member
Username: Crossfired

Post Number: 34
Registered: Mar-07
You can find these used on Ebay for under $100. It's the best amp Pioneer ever made(IMO). I've installed about 20 of these and everyone was very happy and none came back. Really small with tons of power.

2076_310069933_64850147_tab=B%2C00.html?compName=PNA_V3_ProductDetailsComponent, http://www.pioneerelectronics.com/pna/v3/pg/product/details/0,,2076_310069933_64 850147_tab=B,00.html?compName=PNA_V3_ProductDetailsComponent
 

Bronze Member
Username: Crossfired

Post Number: 35
Registered: Mar-07
Try this : http://ampguts.realmofexcursion.com/Pioneer_GM-D510M/
 

New member
Username: H20audio

Fort Lauderdale, FL United States

Post Number: 5
Registered: Sep-07
Awesome, thanks! I'll check those out as well as the Planet Audio. These are the suggestions I was hoping to get. I'll probably wind up getting one or the other tonight. Any other suggestions? Thanks again, Guys!
 

New member
Username: H20audio

Fort Lauderdale, FL United States

Post Number: 6
Registered: Sep-07
Thanks Guys! I went ahead and got the Planet Audio amp. I appreciate all the input. Can't wait to get it and hook it up!

http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem%26%26item%3D190154093467&ssPageNam e=STRK:MEWA:IT&ih=009
 

Bronze Member
Username: Thunderb

Post Number: 31
Registered: Sep-07
you will be very happy with that amp. Planet audio makes good high quality amplifiers.
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