Technical Specifications
Rated Output Power:
HTA125A:
125W;
HTA250A:
250W
Total Harmonic Distortion:
Less than 0.5%, 20 to 20,000 Hz at full rated output
Frequency Response:
±1 dB, 20 to 20,000 Hz at full rated output
Input Sensitivity:
Hi-Z, 500mV; Lo-Z balanced, with optional transformer, 150mV
Hum and Noise:
90 dB below rated output
Outputs:
4 ohms, 8 ohms, 25V, 25VCT, 70V
Output Regulation:
Better than 2 dB from no load to full load
Input Impedances:
Hi-Z, 50k ohms unbalanced; Lo-Z, 600 ohms, balanced or unbalanced,
and 1:1 bridging with optional plug-in transformers
Low-Cut Filter:
-10 dB @ 100 Hz
Controls & Indicators:
Front Panel — Illuminated On/Off power switch and overload shutdown LED
Rear Panel — Input level control, Slo-Blo fuse
Internal — Low-Cut filter switch
Power Requirements:
HTA125A:
120V ~, 60 Hz, 3.1A, 260 watts @ Full Rated Output (Idle 45W)
HTA250A:
120V ~, 60 Hz, 5.5A, 520 watts @ Full Rated Output (Idle 60W)
Thermal Emissions (full power):
HTA125A:
426.9 BTU/hr.;
HTA250A:
939.2 BTU/hr
Overload Protection:
Electronic overload protection
Electrical:
HTA125A:
4A Slo-Blo Fuse;
HTA250A:
7A Slo-Blo Fuse
Thermal: Thermostat
Auxiliary Receptacle (not switched):
Three-wire grounded*, 300 watts maximum
Dimensions (without removable feet):
19" W x 5-1/4" H x 11" D (48.3 x 13.3 x 27.9 cm)
Front Panel Dimensions:
19" W x 5-1/4" H (48.3 x 13.3 cm)
Finish:
Black
Shipping Weight:
HTA125A:
44 lbs.;
HTA250A:
56 lbs.
Regulatory Approvals:
ETL listed
Accessories:
Model TL600, 600-ohm line-matching transformer; Model TL100,
1:1 line-matching transformer
*This receptacle will be grounded only if the power amplifier has been grounded properly.
