Very confused on this amp...

carshateme · 10th October 2011, 08:07 PM

I have a Hifonics HFI2000D.

It says 2000watt rms...and if I'm correct the wattage is 4000w? or am I wrong...

Because what I was told is that RMS = 1/2 of wattage of the amp...so 2000 x 2 = 4000....or is the true RMS 1000...Confused =((

Perry Babin · 10th October 2011, 08:23 PM

The RMS rating (if it's accurately measured) is the true power the amp can produce before it distorts. The HFI2000D is a 2000 watt amp when driving a 1 ohm load.

carshateme · 10th October 2011, 08:34 PM

SO what is the wattage?

Perry Babin · 10th October 2011, 08:46 PM

650, 1300 or 2000w RMS, depending on the load impedance.

carshateme · 10th October 2011, 09:39 PM

Then what's the reg wattage...like some amps are like 3500watts and have 1200. Rms

Perry Babin · 10th October 2011, 09:43 PM

The RMS rating is the only usable rating. Ignore all ratings that are not RMS ratings. They are meaningless.

carshateme · 10th October 2011, 09:51 PM

Ah okay. Lol called the manufacture and they were like... its 2000watts dumba$- haha. Feel lame now.

RS232 · 11th October 2011, 05:36 PM

And do you know how many Amps it will drain from the battery (lets say engine running with a good alternator giving around 14V ) ?

Ric

carshateme · 11th October 2011, 06:15 PM

Well I have a 220amp alt that produces 14.7 volts...when my subs hit low notes it drops to like 12.9~13.4

RS232 · 07:42 PM

Well my question was about the Amps that the amplifier need to produce the 1000Wrms
If we consider a perfect system without losses (preamp stages, heat) it needs around 71.5Amps and that just for the amp driving the sub
Now add head unit and probably another amplifier for the speakears in the doors/parcel shelf and you are allready in the 150Amp figure
Since we don't live in a perfect world now add all the losses in all the system (amps and head unit etc)and you are around the 200Amp figure and leaves you with 20amps to run the rest os the car.
I know that no one (?) drives the car with the system at full blast but it gives you something to think about
One thing that pi**** me off is the power rating given by manufactures like RMS/MAX/PMPO and so on...
Another thing is Why does everybody believes that crap and allways goes by the BIGGGG numbers (like this Pioneer 3500W)) try to feed it with a amp with more than 1000W RMS and see what happens (that is if the real power of the sub is 1000W RMS).

Ric

10th October 2011, 08:07 PM	#1
carshateme diyAudio Member Join Date: Sep 2011	Very confused on this amp... I have a Hifonics HFI2000D. It says 2000watt rms...and if I'm correct the wattage is 4000w? or am I wrong... Because what I was told is that RMS = 1/2 of wattage of the amp...so 2000 x 2 = 4000....or is the true RMS 1000...Confused =(( __________________ 1995 Buick Skylark Custom: Hifonics HIF2000D amp Big 3 Upgrade 1/0 gauge wire 3 10" ALUM10N Audiobahns XS Power XP2000 battery Sony CDX-GT43IPW head unit 12k Kensun headlights L.E.D back Kensun lights Street Glow blue neon light interior

10th October 2011, 08:23 PM	#2
Perry Babin diyAudio Member Join Date: Nov 2003 Location: Louisiana	The RMS rating (if it's accurately measured) is the true power the amp can produce before it distorts. The HFI2000D is a 2000 watt amp when driving a 1 ohm load. __________________ Links >> Basic Car Audio Amp Repair --- Basic Car Audio Electronics --- Basic Transistor Testing --- Basic Switching Power Supply Design --- Basic Computer Skills << Links

10th October 2011, 08:34 PM	#3
carshateme diyAudio Member Join Date: Sep 2011	SO what is the wattage? __________________ 1995 Buick Skylark Custom: Hifonics HIF2000D amp Big 3 Upgrade 1/0 gauge wire 3 10" ALUM10N Audiobahns XS Power XP2000 battery Sony CDX-GT43IPW head unit 12k Kensun headlights L.E.D back Kensun lights Street Glow blue neon light interior

10th October 2011, 08:46 PM	#4
Perry Babin diyAudio Member Join Date: Nov 2003 Location: Louisiana	650, 1300 or 2000w RMS, depending on the load impedance. __________________ Links >> Basic Car Audio Amp Repair --- Basic Car Audio Electronics --- Basic Transistor Testing --- Basic Switching Power Supply Design --- Basic Computer Skills << Links

10th October 2011, 09:39 PM	#5
carshateme diyAudio Member Join Date: Sep 2011	Then what's the reg wattage...like some amps are like 3500watts and have 1200. Rms __________________ 1995 Buick Skylark Custom: Hifonics HIF2000D amp Big 3 Upgrade 1/0 gauge wire 3 10" ALUM10N Audiobahns XS Power XP2000 battery Sony CDX-GT43IPW head unit 12k Kensun headlights L.E.D back Kensun lights Street Glow blue neon light interior


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10th October 2011, 09:43 PM	#6
Perry Babin diyAudio Member Join Date: Nov 2003 Location: Louisiana	The RMS rating is the only usable rating. Ignore all ratings that are not RMS ratings. They are meaningless. __________________ Links >> Basic Car Audio Amp Repair --- Basic Car Audio Electronics --- Basic Transistor Testing --- Basic Switching Power Supply Design --- Basic Computer Skills << Links

10th October 2011, 09:51 PM	#7
carshateme diyAudio Member Join Date: Sep 2011	Ah okay. Lol called the manufacture and they were like... its 2000watts dumba$- haha. Feel lame now. __________________ 1995 Buick Skylark Custom: Hifonics HIF2000D amp Big 3 Upgrade 1/0 gauge wire 3 10" ALUM10N Audiobahns XS Power XP2000 battery Sony CDX-GT43IPW head unit 12k Kensun headlights L.E.D back Kensun lights Street Glow blue neon light interior

11th October 2011, 05:36 PM	#8
RS232 diyAudio Member Join Date: Jan 2006 Location: Swindon	And do you know how many Amps it will drain from the battery (lets say engine running with a good alternator giving around 14V ) ? Ric

11th October 2011, 06:15 PM	#9
carshateme diyAudio Member Join Date: Sep 2011	Well I have a 220amp alt that produces 14.7 volts...when my subs hit low notes it drops to like 12.9~13.4 __________________ 1995 Buick Skylark Custom: Hifonics HIF2000D amp Big 3 Upgrade 1/0 gauge wire 3 10" ALUM10N Audiobahns XS Power XP2000 battery Sony CDX-GT43IPW head unit 12k Kensun headlights L.E.D back Kensun lights Street Glow blue neon light interior

11th October 2011, 07:18 PM	#10
RS232 diyAudio Member Join Date: Jan 2006 Location: Swindon	Well my question was about the Amps that the amplifier need to produce the 1000Wrms If we consider a perfect system without losses (preamp stages, heat) it needs around 71.5Amps and that just for the amp driving the sub Now add head unit and probably another amplifier for the speakears in the doors/parcel shelf and you are allready in the 150Amp figure Since we don't live in a perfect world now add all the losses in all the system (amps and head unit etc)and you are around the 200Amp figure and leaves you with 20amps to run the rest os the car. I know that no one (?) drives the car with the system at full blast but it gives you something to think about One thing that pi**** me off is the power rating given by manufactures like RMS/MAX/PMPO and so on... Another thing is Why does everybody believes that crap and allways goes by the BIGGGG numbers (like this Pioneer 3500W)) try to feed it with a amp with more than 1000W RMS and see what happens (that is if the real power of the sub is 1000W RMS). Ric Last edited by RS232; 11th October 2011 at 07:42 PM.

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