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DESIGNED AND ASSEMBLED IN SUNNY SOUTHERN CALIFORNIA
Test equipment used:
Audio Precision System 22 with burst generator
Audio Precision AUX-000025 Switching Amplifier Measurement Filter
Valhalla 2301 Digital Power Analyzer
Tektronix 2465B scope
8 x 1500W 8 ohm non inductive load resistors
Powerstat 50A variac
Topaz 5KVA ultra-isolating transformer
50A 120/208VAC mains 
MAKE

MAKE

MODEL

SHORT TERM POWER

WATTS/OHM SEC

MEDIUM TERM POWER

WATTS/OHM SEC

LONG TERM POWER UNTIL THERMAL

WATTS/OHM

NOTES

SPEAKERPOWER

SP1-2400

2400W/4 5S 40HZ

2400W/4 5S

1250W/4

HIGH EFFICENCY >90%

 

SP1-4000

4000W/2 6S

4000W/2 6S

2250W/2

 

SP1-3200

3200W/4 3S

3200W/4 3S

1125W/4

 

SP1-6000

6000W/2 4S

6000W/2 4S

2300W/2

 

 

 

 

 

 

LAB GRUPPEN

FP14000

4800W/2 0.080 S

3000W/4 0.200 S

2400W/8 0.200 S

ALL AT 50HZ

1500W/2 0.250 S 1500W/4 0.500S 1500W/8 0.800 S

 

1500W/2

1500W/4

1500W/8

RAPID THERMAL MUTE ON/OFF AT 2/5/6 MIN FROM COLD. FAN SLOWER WHEN SIGNAL APPLIED! LONG TERM THERMALLY LIMTED POWER 500W/2/CH

 

 

 

 

 

 

PASCAL

X-PRO3 CH1

1400W/4 2S 1KHZ

1400W/8 2S 1KHZ

730W/4 40HZ >10S

576W/4 30HZ >10S

230W/4 20HZ >10S

1400W/4 2S 1KHZ

1400W/8 2S 1KHZ

730W/4 40HZ >10S

576W/4 30HZ >10S

230W/4 20HZ >10S

223W/4

850W/8

 

CRUDE LF CLIPPER SEVERELY LIMITS UNDISTORTED POWER AT LF. PSU COLLAPSE TAKES >10S TO RECOVER. LOW EFFICIENCY FOR CLASS D 60%.

 

 

 

 

 

 

 

POWERSOFT

2000HV

542W/8 3.5S

542W/8 3.5S

230W/8

MUST BE OFF FOR 7 SECONDS FOR PSU TO RECOVER AND GIVE FULL SHORT TERM POWER AGAIN. HIGH IDLE 32W. EFFICIENCY 80%

 

 

 

 

 

 

QSC

PL380

2900W/2 2S

2000W/4 4S

1390W/8 16S

2900W/2 2S

2000W/4 4S

1390W/8 16S

980W/2 7S

1050W/4 8S

1100W/8

CUTS BACK, BUT NEVER THERMALS OFF. 2 &4 OHM POWER WOULD HAVE BEEN HIGHER BUT AC SERVICE WAS LOW B/C HOT DAY.

 

 

 

 

 

 

CROWN 12000HD

12000HD

3450W/4 2S

1650W/8

3450W/4 2S

1650W/8

3000W/4

1650W/8

LOW EFFICIENCY FOR CLASS D 60% COULD NOT TEST 2 OHMS, DRAWS TOO MUCH POWER! HIGH IDLE 38W. 2 FANS EACH DRAWS 100W! A REAL SCREAMER

 

 

 

 

 

 

 

 

 

 

 

 

 

​​

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SPEAKERPOWER 17672 ARMSTRONG AVE, IRVINE, CA 92614  WWW.SPEAKERPOWER.NET  949 679 4338
  • Home
  • Technology
  • Technical
    • NOISE REDUCTION IN SYSTEMS
    • Surge Protection
    • Adding 12V Trigger
    • Documents
    • Specifications
    • Comparative Performance
  • Contact
  • About Us
  • News
  • FAQ
  • Store