5
TA250/450 Power Amplifier
AC POWER CORD
Plug the Power Cord into an AC outlet that delivers the
proper voltage and current for amplifier operation.
CAUTION:
The TA250 and TA450 amplifiers are a product of the
most advanced technology and manufacturing tech-
niques. The amplifiers are fully protected against over-
heating, input overload and shorted or mismatched
loads. As is the case with any precision instrument,
some care should be taken in the unit’s operation. The
following precautions should be noted and adhered to.
Damage resulting from their omission is not covered
under the terms of the warranty.
1) DO NOT PARALLEL THE TWO OUTPUTS OF
EACH CHANNEL BY CONNECTING THEM TO-
GETHER OR PARALLEL THEM WITH ANY OTHER
AMPLIFIER OUTPUT.
2) NEVER CHANGE A FUSE WITH AC POWER CON-
NECTED.
3) UNDER NO CIRCUMSTANCES SHOULD THE AM-
PLIFIER BE OPERATED WITH THE COVER RE-
MOVED. THERE ARE NO USER SERVICEABLE COM-
PONENTS INSIDE THE AMPLIFIER. AVOID POTEN-
TIALLY DANGEROUS SHOCK HAZARDS. REMEM-
BER TO KEEP THE COVER CLOSED AT ALL TIMES.
BRIDGED MONO OPERATION
1. Set the INPUT SELECTOR SWITCH to BRIDGE.
2. Connect the input signal to Channel One’s input
jack.
3. Connect the speaker load to the two red terminals of
each channel. Confirm the (+) terminal of the speaker to
channel one and the (-) terminal to channel two.
4. DO NOT use the black terminals of either channel.
5. Assure the speaker impedance is 4 ohms or above.
6. Adjust output using Channel One control and Set
Channel Two level to “0”
SPECIFICATIONS:
Gain:
26 dB (per Channel)
TA250
28 dB (per Channel)
TA450
Continuous Power:
145 watts per Ch. @ 8 ohms
TA250
240 watts per Ch. @ 4 ohms
TA250
200 watts per Ch. @ 2 ohms
TA250
400 watts bridged mono @ 8 ohms
TA250
300 watts bridged mono @ 4 ohms
TA250
270 watts per Ch. @ 8 ohms
TA450
425 watts per Ch. @ 4 ohms
TA450
290 watts per Ch. @ 2 ohms
TA450
765 watts bridged mono @ 8 ohms
TA450
600 watts bridged mono @ 4 ohms
TA450
Frequency Response:
Plus/Minus 0.5 dB, 20 Hz to 20 KHz
Distortion:
< 0.25% THD or IM, .01W to rated power, 20 Hz to 20
KHz (0.01% typical)
Input Sensitivity:
1.0 Vrms standard with 0.775 Vrms and 1.5 Vrms inter-
nally selectable.
Hum and Noise:
104 dB below rated output (unweighed 20 KHz band-
width)
Input Impedance:
15K ohms, nominal
Transient Inter Modulation Distortion:
< 0.02%
