smith

iTrader: (1)

http://www.amazon.com/SONY-XM-2200GTX-XPLOD-Channel-Amplifier/dp/B0001YEYKM

Just wondering..I want to use this to power a single Infinity Kappa 12.1 (350RMS-1400MAX)

Im looking for good quality over pounding bass.


What would this thing be like on my battery? Would I need a cap?

Thanks guys

evan

Looks like that amp is only stable at 4 ohms. What's the impedance of the sub?

What makes you like that amp? I think we could find you something nicer in the same ballpark as that price. If you're worried about what the amp is going to do to your charging system then maybe you should look into some D class amps.

smith

iTrader: (1)

thanks, I didnt know class d amps were better on your battery.

Im currently looking at a kicker 600.1

My subs are 4ohm only btw

evan

The KX600.1 will do 300w at 4 ohms. If I were you, I'd look at a few cheaper (based on prices I've found for the 600.1) options that will do more power than that.

• Alpine MRP-M650
• JBL GTO601.1II
• Phoenix Gold R15.0:1
• eD nine.1

MR2NR

iTrader: (66)

What, a class d is better for your charging system? No soup for you!

You need to know if your sub is a single or dual voice coil model first. Then you need to think if you are going to be adding a second identical sub into the mix sometime down the road. Then purchase the amp that matches what you want to do with the system now and in the future.

evan

You don't agree?

MR2NR

iTrader: (66)

1000w of input power is 1000w of input power regardless of the class of amp. 14.4 volts and 1000w of input power = 69.4 amps no matter what the amp is. The type of amp topology then determines how much of that 1000w of input power makes it to the speaker.

MR2NR

iTrader: (66)

Best thing you can do to make the amp work properly is to deliver the current as efficently as possible. If the amp has to work to get power, it has to work to make power. Do a search on the Big 3 and consider running a 4 gauge power / ground line.

evan

That makes sense to me. So, if two amps put out exactly the same power to a speaker and one of them is a D class that doesn't heat up as much, wouldn't that mean that it needs less power from the battery to do it?

MR2NR

iTrader: (66)

This is the flip side to the equation, measured output power and amp topology. You also need to consider the type of power supply in the amp, regulated, non regulated. On paper all things equal is one thing, in practical applications is something different altogether. Most people never consider both sides of the equation and are not even aware of half of what is really happening with any given amp. In the days before class D, we all had class AB amps. If you are operating under full load continous and drawing large amounts of current it may be beneficial. But in real world conditions, it is not that large of a difference at all.

The big difference is amp size, it can now be smaller as there is nowhere near as much heat being produced in a class D vs. a class AB vs. a class A. Class D is a better use of the available power and that is how it needs to be considered.