Im using two amps that are rated for 2100W rms at 1ohm each. I dont know my current alt. amp rating. I was wandering what size alt. i should upgrade to to run everything. I have two extra batteries lying around, should i use those?
Replies (17)
P0werLifter on 11/30/2005 18:01:46
what amplifiers are you using? If they infact are 2100watts RMS, your going to need MAJOR electrical upgrades including the Big3 (alternator to batt, batt to ground, engine Block to grnd) New High CCA Battery, and a H/O alternator.
What Brand/Model Number Amplifier are you getting?
ilovebass123 on 11/30/2005 21:37:43
Cheap ones http://www.sounddomain.com/item/BOSIQ3KD1
ilovebass123 on 11/30/2005 21:39:18
If these amps are overrated can you tell me som that are 2000W+ at 1 or 2ohms.
ttocs on 11/30/2005 22:55:14
look at the fuses on the side of the amp and give us those numbers, they will help us out better then the rms rating.
P0werLifter on 12/1/2005 01:24:59
Best way to tell is these are for real is by the fuse rating. I am highly suspicious of the ratings on this amplifier. I cant see any fuses by the pictures on the website but from the look of the power and grnd terminals their small. Its a mere 2" tall and from the looks of it, I'm guessing only 8guage wiring which means its not throwing out 2000watts @ 1ohm. A true high power amplifier is going to have at LEAST 4guage inputs for power and grnd.
My Orion 2500d has two 4guage power, and two 4guage ground terminals and it pumps around 2500watts RMS at 1ohm.
-PL
swez on 12/1/2005 03:43:36
From the specs at soundomain and Boss' site, it looks like this amp will do 1500 Wrms @ 2 ohm and 1200 @ 4 ohms. I'd be looking for fuses that add up to 120-150A. It's very possible this power rating is real if the fuses are there and power cables recommended are #2 gage.
All things being as stated, you'll need at least 200A ALT to power this amp. If you add a 2/4 channel to power mid/highs, you'll need more juice. (assuming you crank this system up on a regular basis)
Swez
MrBrownstone on 12/1/2005 14:03:43
I'm afraid to inform you, but that amp will do about 1kW at the most. It is likely @ 100% distortion that an amp can do 2.5x it's 'clean' power, and boss is felonious (no pun) for rating their products like that.
On a side note, that amp won't drain your alternator as it's not actually putting out 4kW of power anyway :-)
swez on 12/1/2005 16:10:43
Always playing the Devil's Advocate game huh Mr. B.? There are 2 sure ways to determine output of an amplifier:
1. Measure the voltage at output stage of the amp to a non-inductive (dummy) load and use an O-Scope to observe clipping and signal distortion on test tones (best way to set gains too)
2. A less accurate method is to look at max current draw before the fuses blow and "extrapolate" from there
B is right on Boss being felonious on power ratings. They have a long history of dupping the "not so well informed" on their power ratings. They seem to like the "ILSI" (If Lightning Strikes It ) method.
Hopefully, now that CSA 2006 is in order, they will clean up their act.
Swez
MrBrownstone on 12/2/2005 03:09:01
Way #3, read the manual or company website.
That or ask us Kats at this site.
ilovebass123 on 12/3/2005 12:37:27
Well does anyone know of a amp or amps that can power my 2 H2s a little past 2000w a piece?
P0werLifter on 12/3/2005 15:05:17
What is your budget like? A high wattage amplifier is going to cost some $$$. I'm personally running an Orion 2500d, Retail they run about 1300 but you can get em for like 600-700 on Ebay, or 700 on Sounddomain.com with full manufactures warrenty.
At 1 ohm they'll do 2000+watts RMS but you have to make sure your subwoofers can be wired for a 1 ohm load to the amplifier. If you want to run both h2's at 2000watts your going to be spending some serious money on amplifiers, and on electrical upgrades.
Another Amplifier ive ran that I know hasnt thrown out its rated power but suited my needs was the Power Acoustik 3000dB. It can be ran at 1ohm stable. PA isnt a very reputable company but that amp has ran fine for me in the past.
MrBrownstone on 12/3/2005 16:30:47
I always recommend proven performers. For the money, you'll often find Earthquake, Memphis & Crossfire up there. I've used Orion, and they are also phenomenal.
Other brands like DEI, MMATS, are also excellent. The main focus you should have is on ENCLOSURE design. Matching your woofers with the application. Getting the most out of a speaker is what you want to spend your time on. After that, power is simply a commodity that you use to amplify a successful design.
Tell us a lot about your system i.e. equipment, vehicle, box design, wiring upgrades...that way, we can give you the best advice. 2kW is an enormous amount of power for 1 woofer, and likely unless you are into DB DRAG, you might not even need that much.
P0werLifter on 12/3/2005 16:53:34
I agree with Brownstone here. I've heard of people giving H2's 1000watts in a ported enclosure and being very happy with the performance. Unless your into dB Drag, you dont really need 2kw of power for each woofer. I am under the impression your running two 12" H2 correct?
Spend some time thinking about what you want to accomplish with your system. Then tell us about it and your budget available for the build and we'll be able to help you on your way.
-PL
ilovebass123 on 12/7/2005 17:18:12
Im goin for spl comp. Two H2s facing toward cab of a dakota. Cutting through bed and cab. Have two 950ca batteries plus one in truck already. I have 7in door and ear speakers plus amp. Found a 500a alternator and was thinking about buying it. My cousin has two 15s, 1000w each and its not loud enough for me.
ilovebass123 on 12/7/2005 20:55:10
What about one JBL Power BPX2200.1
swez on 12/7/2005 21:57:10
This amp can do 1-4 ohm loads, but seems like it has the best output and performance at 4 ohms. Your H2's, what coil configuration are they?
Looks like the specs indicate a max current draw of 190A., with the BPX2200.1 That's both channels bridged.
If you want brute power and not spend so much, look at the Power Acoustik mono amps. This amp is 1 ohm stable and POwerLifter has been using that one until he got the new Orion.
http://www.cardomain.com/item/POWA3000DB
Swez
ilovebass123 on 12/8/2005 16:18:41
My H2s area dual 2 ohms each.
Replies (17)
P0werLifter on 11/30/2005 18:01:46
what amplifiers are you using? If they infact are 2100watts RMS, your going to need MAJOR electrical upgrades including the Big3 (alternator to batt, batt to ground, engine Block to grnd) New High CCA Battery, and a H/O alternator.
What Brand/Model Number Amplifier are you getting?
ilovebass123 on 11/30/2005 21:37:43
Cheap ones http://www.sounddomain.com/item/BOSIQ3KD1
ilovebass123 on 11/30/2005 21:39:18
If these amps are overrated can you tell me som that are 2000W+ at 1 or 2ohms.
ttocs on 11/30/2005 22:55:14
look at the fuses on the side of the amp and give us those numbers, they will help us out better then the rms rating.
P0werLifter on 12/1/2005 01:24:59
Best way to tell is these are for real is by the fuse rating. I am highly suspicious of the ratings on this amplifier. I cant see any fuses by the pictures on the website but from the look of the power and grnd terminals their small. Its a mere 2" tall and from the looks of it, I'm guessing only 8guage wiring which means its not throwing out 2000watts @ 1ohm. A true high power amplifier is going to have at LEAST 4guage inputs for power and grnd.
My Orion 2500d has two 4guage power, and two 4guage ground terminals and it pumps around 2500watts RMS at 1ohm.
-PL
swez on 12/1/2005 03:43:36
From the specs at soundomain and Boss' site, it looks like this amp will do 1500 Wrms @ 2 ohm and 1200 @ 4 ohms. I'd be looking for fuses that add up to 120-150A. It's very possible this power rating is real if the fuses are there and power cables recommended are #2 gage.
All things being as stated, you'll need at least 200A ALT to power this amp. If you add a 2/4 channel to power mid/highs, you'll need more juice. (assuming you crank this system up on a regular basis)
Swez
MrBrownstone on 12/1/2005 14:03:43
I'm afraid to inform you, but that amp will do about 1kW at the most. It is likely @ 100% distortion that an amp can do 2.5x it's 'clean' power, and boss is felonious (no pun) for rating their products like that.
On a side note, that amp won't drain your alternator as it's not actually putting out 4kW of power anyway :-)
swez on 12/1/2005 16:10:43
Always playing the Devil's Advocate game huh Mr. B.? There are 2 sure ways to determine output of an amplifier:
1. Measure the voltage at output stage of the amp to a non-inductive (dummy) load and use an O-Scope to observe clipping and signal distortion on test tones (best way to set gains too)
2. A less accurate method is to look at max current draw before the fuses blow and "extrapolate" from there
B is right on Boss being felonious on power ratings. They have a long history of dupping the "not so well informed" on their power ratings. They seem to like the "ILSI" (If Lightning Strikes It ) method.
Hopefully, now that CSA 2006 is in order, they will clean up their act.
Swez
MrBrownstone on 12/2/2005 03:09:01
Way #3, read the manual or company website.
That or ask us Kats at this site.
ilovebass123 on 12/3/2005 12:37:27
Well does anyone know of a amp or amps that can power my 2 H2s a little past 2000w a piece?
P0werLifter on 12/3/2005 15:05:17
What is your budget like? A high wattage amplifier is going to cost some $$$. I'm personally running an Orion 2500d, Retail they run about 1300 but you can get em for like 600-700 on Ebay, or 700 on Sounddomain.com with full manufactures warrenty.
At 1 ohm they'll do 2000+watts RMS but you have to make sure your subwoofers can be wired for a 1 ohm load to the amplifier. If you want to run both h2's at 2000watts your going to be spending some serious money on amplifiers, and on electrical upgrades.
Another Amplifier ive ran that I know hasnt thrown out its rated power but suited my needs was the Power Acoustik 3000dB. It can be ran at 1ohm stable. PA isnt a very reputable company but that amp has ran fine for me in the past.
MrBrownstone on 12/3/2005 16:30:47
I always recommend proven performers. For the money, you'll often find Earthquake, Memphis & Crossfire up there. I've used Orion, and they are also phenomenal.
Other brands like DEI, MMATS, are also excellent. The main focus you should have is on ENCLOSURE design. Matching your woofers with the application. Getting the most out of a speaker is what you want to spend your time on. After that, power is simply a commodity that you use to amplify a successful design.
Tell us a lot about your system i.e. equipment, vehicle, box design, wiring upgrades...that way, we can give you the best advice. 2kW is an enormous amount of power for 1 woofer, and likely unless you are into DB DRAG, you might not even need that much.
P0werLifter on 12/3/2005 16:53:34
I agree with Brownstone here. I've heard of people giving H2's 1000watts in a ported enclosure and being very happy with the performance. Unless your into dB Drag, you dont really need 2kw of power for each woofer. I am under the impression your running two 12" H2 correct?
Spend some time thinking about what you want to accomplish with your system. Then tell us about it and your budget available for the build and we'll be able to help you on your way.
-PL
ilovebass123 on 12/7/2005 17:18:12
Im goin for spl comp. Two H2s facing toward cab of a dakota. Cutting through bed and cab. Have two 950ca batteries plus one in truck already. I have 7in door and ear speakers plus amp. Found a 500a alternator and was thinking about buying it. My cousin has two 15s, 1000w each and its not loud enough for me.
ilovebass123 on 12/7/2005 20:55:10
What about one JBL Power BPX2200.1
swez on 12/7/2005 21:57:10
This amp can do 1-4 ohm loads, but seems like it has the best output and performance at 4 ohms. Your H2's, what coil configuration are they?
Looks like the specs indicate a max current draw of 190A., with the BPX2200.1 That's both channels bridged.
If you want brute power and not spend so much, look at the Power Acoustik mono amps. This amp is 1 ohm stable and POwerLifter has been using that one until he got the new Orion.
http://www.cardomain.com/item/POWA3000DB
Swez
ilovebass123 on 12/8/2005 16:18:41
My H2s area dual 2 ohms each.
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