singeralternators

We mention in the beginning of the video that we roll into the volume to capture the best signal voltage for each amplifier. Just so you know...when doing spl there is always a minute amount of clipping in the signal for you to show you highest score..... Okay so you were clipping then I take it. LOL, and generally speaking clipping will almost always yield the highest score because of power output when you have a square wave and THD goes up to 10%. I would like to see a dead on comparison all scoped to a clean signal and not changing the input voltage from the volume knob. That would show which is the better amp for this particular test in that vehicle. That would not be accurate at all. Some amplifiers require a different level of signal to show their highest SPL and power. In terms of the signal on the radio we are testing with the volume was low enough that it was not anywhere near clipping (most pioneers clip in the low 50s and we were testing in the 40s) When rolling into the volume your going to see the best SPL and power from the signal staying clean before you are clipping or near clipping (that is why we do it). This all has to do with keeping the test conrolled for the best results. Well having said that I could take a 2500 watt amp clip it to hell and back and get close to 3k out of it, but take a 3k watt amp and give it a clean signal which would you rather run, that is my point. I can understand what your implying but from the viewers standpoint lets be completely realistic. If you own one of these amps and compete with it your going to push it to the limit to do your best score possible to win....this is what people want to see because that is how they are going to use the equipment. "yea I could have burped a louder score with my amps at the last show I was at but I chose to take second place because I didn't want to send a little bit of unclean signal to my amps..." see what I am saying? Oh I am with ya, but you didn't mention in the video how the gain was set, at one point I think I heard you say 3/4 but I could take a memphis 4k and a AQ 4k(3500D) and make one amp look better then the other by just bumping the gain one way or the other, since you stated how the lpf and sub sonic was set. That is right, every amp was at 3/4. I have already tested that and among these three amplifiers they all showed their most spl potential with the gain in that position for this application. This was the absolute best these amplifiers could perform based on where we had their settings.

Yep Thankyou

We mention in the beginning of the video that we roll into the volume to capture the best signal voltage for each amplifier. Just so you know...when doing spl there is always a minute amount of clipping in the signal for you to show you highest score..... Okay so you were clipping then I take it. LOL, and generally speaking clipping will almost always yield the highest score because of power output when you have a square wave and THD goes up to 10%. I would like to see a dead on comparison all scoped to a clean signal and not changing the input voltage from the volume knob. That would show which is the better amp for this particular test in that vehicle. That would not be accurate at all. Some amplifiers require a different level of signal to show their highest SPL and power. In terms of the signal on the radio we are testing with the volume was low enough that it was not anywhere near clipping (most pioneers clip in the low 50s and we were testing in the 40s) When rolling into the volume your going to see the best SPL and power from the signal staying clean before you are clipping or near clipping (that is why we do it). This all has to do with keeping the test conrolled for the best results. Well having said that I could take a 2500 watt amp clip it to hell and back and get close to 3k out of it, but take a 3k watt amp and give it a clean signal which would you rather run, that is my point. I can understand what your implying but from the viewers standpoint lets be completely realistic. If you own one of these amps and compete with it your going to push it to the limit to do your best score possible to win....this is what people want to see because that is how they are going to use the equipment. "yea I could have burped a louder score with my amps at the last show I was at but I chose to take second place because I didn't want to send a little bit of unclean signal to my amps..." see what I am saying?

We mention in the beginning of the video that we roll into the volume to capture the best signal voltage for each amplifier. Just so you know...when doing spl there is always a minute amount of clipping in the signal for you to show you highest score..... Okay so you were clipping then I take it. LOL, and generally speaking clipping will almost always yield the highest score because of power output when you have a square wave and THD goes up to 10%. I would like to see a dead on comparison all scoped to a clean signal and not changing the input voltage from the volume knob. That would show which is the better amp for this particular test in that vehicle. That would not be accurate at all. Some amplifiers require a different level of signal to show their highest SPL and power. In terms of the signal on the radio we are testing with the volume was low enough that it was not anywhere near clipping (most pioneers clip in the low 50s and we were testing in the 40s) When rolling into the volume your going to see the best SPL and power from the signal staying clean before you are clipping or near clipping (that is why we do it). This all has to do with keeping the test conrolled for the best results.

I agree also. There will be more vids in other applications (some also 16V)

Retail is one thing. What people actually pay based on their rank, skills, or rep with a company is another. That is to not be discussed on a public forum obviously. All I am really saying...and I will leave it at that.

Thanks. In the wagon testing on 16V a 4500 has made nearly 7500 RMS at 1.13 ohms rising from .38 just above 16V after voltage drop. That application really shined for the 4500. In the Hummer testing I have seen 4800 RMS from a American Bass 500.1 at 2.5 ohms from a .7 nominal load. Now imagine the power it would do if final resistance was close to 1 ohm... Please understand that just like my ending disclaimer says...every amplifier has the ability to shine based on the application. From where I stand in terms of value size and performance the DC5K is where its at. Its great that everyone is saying the 4500 is under rated for power it is doing etc. but the larger picture I see is a Lamberghini that is called a 4 cylinder yet it still has a huge price tag. Everyone is entitled to their opinion...that is just what I see...and that is also why this test is in the DC section, not Sundown or American Bass is there was one. All three are great amps by the way.

this^^ i wanna see how the new Crescendo bc5500 stacks up against these 3 amps If I can get one I will do it.

Next biggest factor

Blake Do you want me to post pics on this thread or start a new one?