Big street class amp test!!!
11-13-2004, 06:20 AM
#22
so it was done in a Blazer with a pair of dd3510 's
it would be more fair if u tested them all at the same ohm load , true !!
Kicker ZR1000 (2 ohm reactive) - 145.5dB
Crossfire BMF 1000D (½ ohm reactive) - 146.2dB
Earthquake D2 (½ ohm reactive) - 147.8dB
Hardcore Riprock 500d (½ ohm reactive) - 148.3dB
Crossfire 4000d (2 ohm reactive) - 148.5dB
E-Audio 3000d (½ ohm reactive) - 148.9dB
it would be more fair if u tested them all at the same ohm load , true !!
Kicker ZR1000 (2 ohm reactive) - 145.5dB
Crossfire BMF 1000D (½ ohm reactive) - 146.2dB
Earthquake D2 (½ ohm reactive) - 147.8dB
Hardcore Riprock 500d (½ ohm reactive) - 148.3dB
Crossfire 4000d (2 ohm reactive) - 148.5dB
E-Audio 3000d (½ ohm reactive) - 148.9dB
11-13-2004, 03:02 PM
#26
50 Watt CAFz'r
Join Date: May 2003
Posts: 356
Voltage drop was not much of an issue, some of the smaller amps did benefit from less voltage drop, but the batteries remained between 12.5 and 12.8 volts for every amp.
No, the test was not exactly a fair power output comparison, this was a street test putting amps on what subs were available. The two amps that were tested at 2 ohms were unable to run at .5 ohm.
Pretty soon we will be testing those and a couple other amps in a street class power output showdown.
The amps will have a constant 12.5 volt source. Gains will be set to maximize power, and they will be tested at 8, 4, 3, 2, 1.5, 1, .75, .5, .375, .25 ohms DC... we will go lower if they will stay on at that point.
Until then, this test will have to suffice, which I'd like to say is a pretty decent test since those are pretty close to what the amps will do max power at anyways.
No, the test was not exactly a fair power output comparison, this was a street test putting amps on what subs were available. The two amps that were tested at 2 ohms were unable to run at .5 ohm.
Pretty soon we will be testing those and a couple other amps in a street class power output showdown.
The amps will have a constant 12.5 volt source. Gains will be set to maximize power, and they will be tested at 8, 4, 3, 2, 1.5, 1, .75, .5, .375, .25 ohms DC... we will go lower if they will stay on at that point.
Until then, this test will have to suffice, which I'd like to say is a pretty decent test since those are pretty close to what the amps will do max power at anyways.
11-13-2004, 03:54 PM
#27
NO! Why would you use more than one battery in a STREET CLASS amp showdown? you can only use one battery in street so keeping the voltage constant would make the comparison inapplicable to street classes...even as it is the test isn't applicable to street B or C since you are only using one amp per battery...if you switched to two amps per battery (or used a smaller battery like a odyssey 1200 which would be like half the battery that some people use) then it would be able to be compared for street B and C...although this comaprison is definately useful and better than nothing
11-13-2004, 04:24 PM
#28
50 Watt CAFz'r
Join Date: May 2003
Posts: 356
Good point.
To clarify, we'll be using a DC load to more accurately measure the power out of the amplifiers... in that sense, it is no more useful to anyone since you'll never achieve a static load that the resistors do. The re-test will be more useful as a tool to find out which amp is most powerful and at what impedance it may be best suited for. This will prove useful in figuring out which amplifier to buy to match up best to your existing subs, or alternatively, which coils you should be getting to match up to an amplifer.
I'm sure if we care at all at that point, we could re-test usign a single 1700, with one and two of the same model amps and d oa strete A / street B test. a Street C test will be a little redundant since it'll be similar to a street B test. Although I could do this, I'm fairly confident from the voltage drops we are already seeing that the amps will behave no differently on a 1700. Most of these amps are fairly close in efficiency, and I highly doubt any of them would be turning off on a single battery, that is more of an install related criteria that I'm really not going to be covering.
Moreso, this test was really just us trying to justify buying the amplifiers we did, on the whim that they would be more powerful than the amplifiers already in our possesion. We just wanted to share our results with other who may have been curious which amp was more powerful (albeit, under our own test situation).
To clarify, we'll be using a DC load to more accurately measure the power out of the amplifiers... in that sense, it is no more useful to anyone since you'll never achieve a static load that the resistors do. The re-test will be more useful as a tool to find out which amp is most powerful and at what impedance it may be best suited for. This will prove useful in figuring out which amplifier to buy to match up best to your existing subs, or alternatively, which coils you should be getting to match up to an amplifer.
I'm sure if we care at all at that point, we could re-test usign a single 1700, with one and two of the same model amps and d oa strete A / street B test. a Street C test will be a little redundant since it'll be similar to a street B test. Although I could do this, I'm fairly confident from the voltage drops we are already seeing that the amps will behave no differently on a 1700. Most of these amps are fairly close in efficiency, and I highly doubt any of them would be turning off on a single battery, that is more of an install related criteria that I'm really not going to be covering.
Moreso, this test was really just us trying to justify buying the amplifiers we did, on the whim that they would be more powerful than the amplifiers already in our possesion. We just wanted to share our results with other who may have been curious which amp was more powerful (albeit, under our own test situation).
11-13-2004, 04:31 PM
#29
Voltage drop was almost the same for all the amps, so the results should carry over to a true street test. The only reason we didn't try them on a small power supply is we didn't want to blow any amps up. I am sure we will have some results using a 1700 soon.
11-13-2004, 06:12 PM
#30
500 Watt CAFz'r
Join Date: Mar 2002
Posts: 518
That is the kind of test that interests me more than a one battery test. This gives a better reflection of what kind of real power these amps are making.
Good test guys, I would be very interested in the next wave of tests.
Good test guys, I would be very interested in the next wave of tests.
