ATI Audio P1000-1 User Manual
Page 5
Audio Technologies Inc. | 154 Cooper Road #902 | West Berlin, NJ 08091 | Voice 856-719-9900 | Fax 856-719-9903 | www.
audio.com
IC output DC voltages (no signal conditions) should measure OVDC +\- .5 VDC.
Significant deviation indicates IC or circuit problem. Measurable DC difference
between +\- amplifier inputs (other than due to meter loading) indicates IC failure.
MODIFICATIONS
230 VAC OPERATION
Your MicroAmp is wired for 115 VAC 50/60 Hz operations unless otherwise
requested at the time of ordering. It can be modified for 230 VAC use by
removing the Power transformer primary jumpers W1 and W3 and inserting a
jumper in the W2 holes.
150 OHM OUTPUT IMPEDANCE
Transformers output MicroAmps are converted to drive 150 ohm audio lines by
removing jumpers W4 and W5 located adjacent to output transformers T3 and T2
respectively. Insert two new jumpers for each output transformer between the
original jumper terminals and the empty terminals immediately adjacent to and in
line with the original terminals in order to parallel the secondary windings.
Balanced differential output and single ended output MicroAmps will drive 150
ohm loads without modification but will current limit before full supply swing is
reached.