Heritage Audio 1073/500 User manual
1073/500 Channel amplier
1073/500 FEATURES 1073/500 SPECIFICATIONS
• 70dB Class A Microphone preamplier, HI-LO
selectable minimum input impedance, balanced and
oating. High gain positions show a higher impedance,
ideal for old ribbon mics.
• 10dB Class A Line Amplier, Bridging input
impedance, balanced and oating.
• Class A, single ended, 2N3055 driven high headroom
output stage.
• High Frequency: +/-16dB shelving at 12 kHz,
Baxandall type.
• Low Frequency: +/-16dB with selectable frequency
shelving of 35Hz, 60Hz, 110Hz & 220Hz ,Baxandall
type.
• Mid Frequency: +/-18dB peaking, xed ‘Q’ , selectable
center frequencies of 0.36kHz, 0.7kHz, 1.6kHz, 3.2kHz,
4.8kHz , and 7.2kHz , dual inductor based.
• High Pass Filter: 18dB per octave slope, switchable
between 50Hz, 80Hz , 160 Hz & 300Hz, inductor
based.
• EQ Button: Switches the equalizer on or off.
• Phase Button: Flips phase 180º.
• 1073 Module available. 19” Convertible format
available Winter 2012.
• Microphone input impedance: HI, 1200 Ohm
minimum, LO, 300 Ohm minimum. Higher gain
positions gradually have greater impedances, optimum
for lo gain ribbon mics. Input is transformer balanced
and oating.
• Line input impedance: 10KOhms bridging, transformer
balanced and oating.
• Output impedance: Less than 75 Ohms, transformer
balanced and oating, to drive a load of 600 Ohms.
• Maximum output: Greater than +26dBm into 600
Ohms, greater than +32dBu into 10KOhms.
• THD: Less than 0.025% at 1Khz, Less than 0.05% at
100Hz.
• Frequency response :20Hz (+0.3dB) to 20Khz
(-0.2dB).
• Maximum Gain: Slightly greater than 80dB.
• Noise: Less than -100dBm.
• Power consumption: 78 mA per rail @+-16VDC.
info@heritageaudio.net
www.heritageaudio.net
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