*New Test: Sundown SAZ-1500D*

[vetkilr 10+ year member]

Nice job man.

Yeah tommy great test.

Looks like another 20.1 where you have to drop it low to get real world power.

I know the 20.1 didnt do good it my setup at all,but works great in pimps???

Hell even 2 strapped at 1 ohm wont be what one 2500.1 is at 1ohm???

 

[BaseSteala112 10+ year member]

Good test Thomas.

 

[xluben 10+ year member]

Test it at different frequencies to get the impedance rise down. Right now we're looking at a larger difference from apparent to actual power due to your impedance rise. You're going to see more variation because you're calculating power by using Vrms*Irms and that only gives you apparent power. With an impedance rise like that, you're putting a pretty large variation due to the imaginary load that is combined with the resistive load.

i believe i mentioned this in loyd's sundown test thread //content.invisioncic.com/y282845/emoticons/rolleyes.gif.c1fef805e9d1464d377451cd5bc18bfb.gif

Vrms x Irms is not equal to RMS watts

actual RMS power will be less, but how much less depends on how inductive the load is (if i understand correctly).

 

[CBFryman2 5,000+ posts]

//content.invisioncic.com/y282845/emoticons/fyi.gif.9f1f679348da7204ce960cfc74bca8e0.gif There is really no such thing as RMS current or power...but saying there is makes it easier for all of us. //content.invisioncic.com/y282845/emoticons/wink.gif.608e3ea05f1a9f98611af0861652f8fb.gif

 

[denim 5,000+ posts]

I know a good place that sells Sundown //content.invisioncic.com/y282845/emoticons/wink.gif.608e3ea05f1a9f98611af0861652f8fb.gif

 

[mannyb18b]

Yeah tommy great test.
Looks like another 20.1 where you have to drop it low to get real world power.

I know the 20.1 didnt do good it my setup at all,but works great in pimps???

Hell even 2 strapped at 1 ohm wont be what one 2500.1 is at 1ohm???

Don't drop it too low....

 

[wilzyx 5,000+ posts]

havent some people gotten about 1800w out of these at 1 ohm? like manny ^^^

 

[9512ds 5,000+ posts]

Manny had his at like .35 i do bleieve

 

[mannyb18b]

yes. no likey .35

actually, it did very well for a good amount of time. It was protection happy at first, then not.

Some people believe a Pioneer was the cause of the death of the Sundown, so if that is true, it was just fine at .35.

 

[xluben 10+ year member]

//content.invisioncic.com/y282845/emoticons/fyi.gif.9f1f679348da7204ce960cfc74bca8e0.gif There is really no such thing as RMS current or power...but saying there is makes it easier for all of us. //content.invisioncic.com/y282845/emoticons/wink.gif.608e3ea05f1a9f98611af0861652f8fb.gif

//content.invisioncic.com/y282845/emoticons/confused.gif.e820e0216602db4765798ac39d28caa9.gif

and yes there is also RMS power, but it's not Vrms*Irms. that is apparent power.

and, as you can see by the power triangle, the actual power will be less than the apparent power.

 

[tommyk90 5,000+ posts]

Test it at different frequencies to get the impedance rise down. Right now we're looking at a larger difference from apparent to actual power due to your impedance rise. You're going to see more variation because you're calculating power by using Vrms*Irms and that only gives you apparent power. With an impedance rise like that, you're putting a pretty large variation due to the imaginary load that is combined with the resistive load.

This test was more than just finding out my impedence rise. //content.invisioncic.com/y282845/emoticons/fyi.gif.9f1f679348da7204ce960cfc74bca8e0.gif

It was finding power in an ACTUAL test comparing it to my zx2500. I'm not gonna sit there and test the sundown at every single frequency to determine actual power at that frequency. It's pointless.

The amp did plenty of power for my impedence rise, doing any more testing is just silly and a waste of time. I'd say an amp rated for 1500 watts at 1 ohm and putting out 1100 at 2.7 ohm is pretty darn good. //content.invisioncic.com/y282845/emoticons/wink.gif.608e3ea05f1a9f98611af0861652f8fb.gif

If we have the subs to test it out, we'll wire it down to .5 and see what power it does then. And to be honest, that impedence rise isn't extraordinary at all. You would be surprised what actual impedence is in a daily driver car playing music. 6-7 ohms isn't out of the question in some circumstances.

 

[bdawson72 5,000+ posts]

Nice Test tommy... to bad u cant get the power out the amps like loyd.... i cant either so dont feel bad lol

Makes me wonder what the hell loyd has in his charging system

 

[tommyk90 5,000+ posts]

Makes me wonder what the hell loyd has in his charging system

Most likely just less impedence rise.

 

[Immacomputer 10+ year member]

i believe i mentioned this in loyd's sundown test thread //content.invisioncic.com/y282845/emoticons/rolleyes.gif.c1fef805e9d1464d377451cd5bc18bfb.gif
Vrms x Irms is not equal to RMS watts

actual RMS power will be less, but how much less depends on how inductive the load is (if i understand correctly).

Yes, you did mention it and his tests were a little more controlled because he did not have very much impedance rise. There are two components that make up the Z value (impedance) of the load - the real and imaginary parts. Just like there is a triangle for power, there is a triangle for impedance. There is the resistive component (real) and the reactive component (imaginary;√(-1) ). Together, they form the total impedance. The arctan of the reactive load over the resistive load will give you the angle of the said triangle. As the reactive load gets smaller and smaller, the angle of the triangle approaches 0. So, when the impedance is very similar to the DC resistance of the sub, you will have much more accurate ratings.

This test was more than just finding out my impedence rise. //content.invisioncic.com/y282845/emoticons/fyi.gif.9f1f679348da7204ce960cfc74bca8e0.gif
It was finding power in an ACTUAL test comparing it to my zx2500. I'm not gonna sit there and test the sundown at every single frequency to determine actual power at that frequency. It's pointless.

The amp did plenty of power for my impedence rise, doing any more testing is just silly and a waste of time. I'd say an amp rated for 1500 watts at 1 ohm and putting out 1100 at 2.7 ohm is pretty darn good. //content.invisioncic.com/y282845/emoticons/wink.gif.608e3ea05f1a9f98611af0861652f8fb.gif

If we have the subs to test it out, we'll wire it down to .5 and see what power it does then. And to be honest, that impedence rise isn't extraordinary at all. You would be surprised what actual impedence is in a daily driver car playing music. 6-7 ohms isn't out of the question in some circumstances.

I appreciate the differences when compared to other amps but I don't care for you throwing around numbers that are not accurate.

And what I'm saying is that the "power" ratings you are getting are not true. You are measuring Volt Amps and not watts. There IS a difference and that difference is pretty large due to the reactive load you're using.

And no, I wouldn't be surprised about impedance rise because I do understand it and I do know that it takes place.

 

[squeak12 10+ year member]

Most likely just less impedence rise.

Loyd has a Eagle Pitcher 12500 I believe. Its about 4' wide.