TECHNICAL SPECIFICATIONS
Rated Output Power:
Model BPA-60
60
watts (rms) from 50Hz to
I5kHz at less than 2%THD
into rated load impedances
Model BPA- 125
125 watts (rms) from 5OHz to
15kHz at less than 2% THD
into rated load impedances
Frequency Response:
Input Sensitivity:
Output Regulation:
-2dB
from 20Hz to 2OkHz
High-impedance: 300mV;
Low-impedance, balanced: 75mV with accessory transformer Model TL600
Better than 2dB from no load to full load
Hum and Noise:
Inputs (Impedance):
85dB below rated output
High-impedance: 50k-ohms unbalanced;
Low-impedance: 600-ohms balanced, with accessory transformer TL600;
Line-bridging with accessory transformers T L l 0 0 or TLlOK
Output Loads:
8-ohm/25V, 16-ohms,
4-ohm/25V, 16-ohms,
25VCT and 70V 25VCT and 70V
Lo-Cut Filter:
Controls, Indicators;
Front Panel:
Rear Panel:
Power Consumption;
I20VAC, 60Hz
@ Full Rated Output:
-1OdB @ 1OOHz (Switch-Selectable)
Illuminated Power Switch
Input Level Control; Circuit Breaker Reset Switch; Lo-Cut Filter Switch
18OW
360w
Overload Protection:
AC Circuit Breaker. Thermal Circuit Breaker, Transient Protection Diodes
1
Auxiliary Receptacle:
(not switched)
Dimensions:
Three-wire grounded* 300 watts maximum
15.25”Wx8”Dx3.5”H
15.25”Wx8”Dx5.25”H
(38.7 x 20.3 x 8.9 cm) (38.7 x 20.3 x 13.3 cm)
Finish:
Black
Weight:
Rack Panel Brackets:
19
lbs. (8.6 kg)
RPK-53
27 Ibs. (12.3 kg)
RPK-54
Accessories:
Model TL600, 600-ohm line-matching transformer
Model TLIOO, 1:1 ratio transformer
Model TLlOK, 10,000-ohm line-matching transformer
*This receptacle will be grounded only if the power amplifier has been grounded properly
All specifications subject to change without notice
AMPLIFIER
1
G N D COM 25VCT
AMPLIFIER 2
GND COM 25VCT
AMPLIFIER I AMPLIFIER 2
G N D C O M
G N D C O M
A74-2021-01
O U T P U T
T E R M I N A L
AMPLIFIER
IMPEDANCE
INPUT O F
POWER
AMPLIFIER
A T 7OV R I = 10K, 1/2W
A T 2 5 V R I = 3.3K, 1/2W
- 0 7 3 0 - A
Figure 1 - Connecting Amplifiers in Series Figure 2 - Input From Another Amplifier
2
