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scott_fx · 05-08-2008, 11:04 PM

Quote: Originally Posted by rijndael

how much money do you have to play with? typically, what you want is something that has more power than your max rating on your speakers...reason why is because at a volume that requires power that your amp doesnt have, you get a massive amount of distortion, even though your speakers can handle it...that will damage both your speakers and your fry your amp. if you have 75W RMS and 150W Max speakers at 4ohm, I would get an amplifier that has 200W per channel at 4ohm (200W x 4 = 50W per channel which is not nearly what you need for even your RMS rating)

also, dont run your 4ohm speakers at 2ohm...you will damage them...but one thing you can do, is double the length of the wire if your running from the amp at 2ohm and at the speaker, you will probably be around 4ohm...you will have to use a multimeter for that though just to be safe...i think its a multimeter at least...

Hey rigndael,

you have a lot of misinformation and half knowledge scattered throughout this post.

first, for a moderate system he'll be fine. and all of his components will work together. infiniti speakers are known for their efficiency. What you are kinda referring too is called 'headroom' and yes, having an amp that is putting out 150 wrms per chan will give less distortion and have a cleaner signal if the gains are set right. But as long as his gains are set correctly and he's not pushing his amp into distortion by turning the volume all the way up... then he'll be fine.

I have no idea how you came about suggesting running twice the length of wire. nor do i understand how to run a 4 ohm speaker at 2 ohms unless you purchase some resistors.

to the op... if you already have the equipment, you'll be fine. spend the time and money on installation (aiming, mounting, sound deadening, tuning). If you haven't purchased the equipment you could benefit from a more powerful amp (gives you some extra sq and spl --volume--). To put it clearly, you'll hear a lot of people saying "too little power will kill a speaker faster then too much power" well... to be clear. if you have a 200 watt amp and a 5 watt amp, neither one of the amps are going to blow the speaker when set up correctly. What happens though is that if you have a 5 watt amp and you are always cranking it up to the max volume you are no longer in the amplifiers sweet spot and you are introducing distortion to the speakers. distortion is what kills the speaker. now lets say that you have a 200 watt amp. after you set your gains correctly you can turn the volume up much higher before the amp starts to distort the signal. Hopefully... this is within your preferred listening volume and you're safe. does that make sense now? to further illustrate. think of a go kart as your 5 watt amp, and a corvette as your 200 watt amp... the throttle is your volume. a go kart driving at 100 mph vs. a corvette driving at 100 mph... the go kart is going to fry well before the corvette will... [on the flip side, now drive them both around at 5 mph and you're not going to break either engine, (working within it's power limits) but you may not be happy with the speed]

05-08-2008, 11:04 PM	#11
scott_fx MySQL Error scott_fx's CarPC Specs Join Date: Dec 2004 Location: Los Angeles Ca Vehicle: '99 Chevy Corvette -- '01 Volvo S60 t5 --'03 Honda CBR 600RR -- '97 Suzuki GSX-R750 Posts: 3,615 My Photos: ()	Quote: Originally Posted by rijndael how much money do you have to play with? typically, what you want is something that has more power than your max rating on your speakers...reason why is because at a volume that requires power that your amp doesnt have, you get a massive amount of distortion, even though your speakers can handle it...that will damage both your speakers and your fry your amp. if you have 75W RMS and 150W Max speakers at 4ohm, I would get an amplifier that has 200W per channel at 4ohm (200W x 4 = 50W per channel which is not nearly what you need for even your RMS rating) also, dont run your 4ohm speakers at 2ohm...you will damage them...but one thing you can do, is double the length of the wire if your running from the amp at 2ohm and at the speaker, you will probably be around 4ohm...you will have to use a multimeter for that though just to be safe...i think its a multimeter at least... Hey rigndael, you have a lot of misinformation and half knowledge scattered throughout this post. first, for a moderate system he'll be fine. and all of his components will work together. infiniti speakers are known for their efficiency. What you are kinda referring too is called 'headroom' and yes, having an amp that is putting out 150 wrms per chan will give less distortion and have a cleaner signal if the gains are set right. But as long as his gains are set correctly and he's not pushing his amp into distortion by turning the volume all the way up... then he'll be fine. I have no idea how you came about suggesting running twice the length of wire. nor do i understand how to run a 4 ohm speaker at 2 ohms unless you purchase some resistors. to the op... if you already have the equipment, you'll be fine. spend the time and money on installation (aiming, mounting, sound deadening, tuning). If you haven't purchased the equipment you could benefit from a more powerful amp (gives you some extra sq and spl --volume--). To put it clearly, you'll hear a lot of people saying "too little power will kill a speaker faster then too much power" well... to be clear. if you have a 200 watt amp and a 5 watt amp, neither one of the amps are going to blow the speaker when set up correctly. What happens though is that if you have a 5 watt amp and you are always cranking it up to the max volume you are no longer in the amplifiers sweet spot and you are introducing distortion to the speakers. distortion is what kills the speaker. now lets say that you have a 200 watt amp. after you set your gains correctly you can turn the volume up much higher before the amp starts to distort the signal. Hopefully... this is within your preferred listening volume and you're safe. does that make sense now? to further illustrate. think of a go kart as your 5 watt amp, and a corvette as your 200 watt amp... the throttle is your volume. a go kart driving at 100 mph vs. a corvette driving at 100 mph... the go kart is going to fry well before the corvette will... [on the flip side, now drive them both around at 5 mph and you're not going to break either engine, (working within it's power limits) but you may not be happy with the speed] __________________ New System in progress: M10k Phaze TD1500 ~> Dynaudio MD130 Phaze TD1500 ~> Seas g18rnx/p Zapco Ref 500.1 ~ 12" tc-9 Behringer DCX2496 ~ Envision Electronics psu Transflective Xenarc My Car Pc Install Last edited by scott_fx : 05-08-2008 at 11:16 PM.