Sundown Amp Clamp Tests (2009)

** Data & original post from 2009 on our older amps **

I am going to go through and drop the SAZ-1000D, SAE-1200D, SAZ-1500D, SAZ-2000D, SAZ-3000D, and SAZ-3500D in the Jeep and do a power clamp test so we have a rough and UNIFORM comparison between the amps in the same setup.

Test Frequency - 50 Hz
Test Load - 4x SA-12s all in parallel for 0.4375 DCR (1/2 nominal)
Test Electrical - 6x Stinger SPV-70 + 225-Amp Alternator (vehicle only at idle)

Amp gain set to 1/2 - Head Unit Sub Control 10/10 - Head Unit Volume 50/50

Setting gain to half on each amp is, of course, not an exact match... but for the sake of roughly comparing the amps I think it serves the purpose.



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SAZ-1000D:



POWER : 1040 Watts
AMP VOLTAGE (measured) : 37.2 V
AMP CURRENT (calculated) : 27.95 A
ACTUAL IMPEDANCE (calculated) : 1.33 ohms
SUPPLY VOLTAGE : 13.15 V

[URL="http://www.sundownaudio.com/misc/_AMP_POWER/1000D/CIMG2498.MOV"]http://www.sundownaudio.com/misc/_AMP_POWE...0D/CIMG2498.MOV[/URL]
* Power Clamp

[URL="http://www.sundownaudio.com/misc/_AMP_POWER/1000D/CIMG2499.MOV"]http://www.sundownaudio.com/misc/_AMP_POWE...0D/CIMG2499.MOV[/URL]
* Voltage Measurement

---------------

SAE-1200D:



POWER : 1770 Watts
AMP VOLTAGE (measured) : DID NOT MEASURE
AMP CURRENT (calculated) : DID NOT MEASURE
ACTUAL IMPEDANCE (calculated) : DID NOT MEASURE
SUPPLY VOLTAGE : 12.65 V

[URL="http://www.sundownaudio.com/misc/_AMP_POWER/1200D/CIMG2513.MOV"]http://www.sundownaudio.com/misc/_AMP_POWE...0D/CIMG2513.MOV[/URL]
* Power Clamp

DID NOT MEASURE
* Voltage Measurement

** FUSES BLEW - DID NOT CONTINUE TO MEASURE VOLTAGE

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SAZ-1500D:



POWER : 1970 Watts
AMP VOLTAGE (measured) : 49.25 V
AMP CURRENT (calculated) : 40 A
ACTUAL IMPEDANCE (calculated) : 1.23 ohms
SUPPLY VOLTAGE : 12.85 V

[URL="http://www.sundownaudio.com/misc/_AMP_POWER/1500D/CIMG2493.MOV"]http://www.sundownaudio.com/misc/_AMP_POWE...0D/CIMG2493.MOV[/URL]
* Power Clamp

[URL="http://www.sundownaudio.com/misc/_AMP_POWER/1500D/CIMG2494.MOV"]http://www.sundownaudio.com/misc/_AMP_POWE...0D/CIMG2494.MOV[/URL]
* Voltage Measurement

---------------

SAZ-2000D:



POWER : 2440 Watts
AMP VOLTAGE (measured) : 56.18 V
AMP CURRENT (calculated) : 43.43 A
ACTUAL IMPEDANCE (calculated) : 1.29 ohms
SUPPLY VOLTAGE : 12.5 V

[URL="http://www.sundownaudio.com/misc/_AMP_POWER/2000D/CIMG2503.MOV"]http://www.sundownaudio.com/misc/_AMP_POWE...0D/CIMG2503.MOV[/URL]
* Power Clamp

[URL="http://www.sundownaudio.com/misc/_AMP_POWER/2000D/CIMG2504.MOV"]http://www.sundownaudio.com/misc/_AMP_POWE...0D/CIMG2504.MOV[/URL]
* Voltage Measurement

---------------

SAZ-3000D:



POWER : 3280 Watts
AMP VOLTAGE (measured) : 61.28 V
AMP CURRENT (calculated) : 53.52 A
ACTUAL IMPEDANCE (calculated) : 1.14 ohms
SUPPLY VOLTAGE : 12.1 V

[URL="http://www.sundownaudio.com/misc/_AMP_POWER/3000D/CIMG2506.MOV"]http://www.sundownaudio.com/misc/_AMP_POWE...0D/CIMG2506.MOV[/URL]
* Power Clamp

[URL="http://www.sundownaudio.com/misc/_AMP_POWER/3000D/CIMG2507.MOV"]http://www.sundownaudio.com/misc/_AMP_POWE...0D/CIMG2507.MOV[/URL]
* Voltage Measurement

---------------

SAZ-3500D:



POWER : 3660 Watts
AMP VOLTAGE (measured) : 65.84 V
AMP CURRENT (calculated) : 55.58 A
ACTUAL IMPEDANCE (calculated) : 1.18 ohms
SUPPLY VOLTAGE : 11.9 V

[URL="http://www.sundownaudio.com/misc/_AMP_POWER/3500D/CIMG2510.MOV"]http://www.sundownaudio.com/misc/_AMP_POWE...0D/CIMG2510.MOV[/URL]
* Power Clamp

[URL="http://www.sundownaudio.com/misc/_AMP_POWER/3500D/CIMG2511.MOV"]http://www.sundownaudio.com/misc/_AMP_POWE...0D/CIMG2511.MOV[/URL]
* Voltage Measurement

---------------

SAZ-4500D:


* SAZ-4500D in prototype case - this is NOT the production case.

POWER : 4870 Watts
AMP VOLTAGE (measured) : 76.0 V
AMP CURRENT (calculated) : 64.08 A
ACTUAL IMPEDANCE (calculated) : 1.18 ohms
SUPPLY VOLTAGE : 12.25 V ***

http://www.sundownaudio.com/misc/_AMP_POWER/4500D/CIMG2529.MOV
* Power Clamp

http://www.sundownaudio.com/misc/_AMP_POWER/4500D/CIMG2530.MOV
* Voltage Measurement

*** - Measured different day from other amps (8-4-09), batteries had full charge so sustained less voltage drop.

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These are not necessarily definitive tests on the amps.

All applications are different and I could have probably squeezed more out of an amp here or there... but for the sake of this test I just set the gain knobs to physically 1/2 way up.

Just a rough guide to show what the amps can do!

I may go back one day and do an SPL comparison as well -- as we have seen up to 1 dB increase from the 3000D to the 3500D even though the power test doesn't seem to indicate as much. With the SPL portion I would sit down and tweak knobs until I got maximum SPL per amp.

I tested amps from smallest to largest (for the most part except 1200D was tested last) -- so the batteries did not have a complete full charge by the time I got to the big amps, just a few minutes of alternator charge time... that just means the bigger amps will produce more than posted if I had a complete charge. This was mentioned in my initial post so I thought I would post it here as well.