HA8173 - 80 Series 8173 Mic Pre 4 Band EQ
When launched in 1972, the 1081 became the most flexible equalizer ever in a mixing console. Its 4 band equalizer allowed sculpting the sound in such a unique way, mainly due to the fact that both mid bands covered almost the whole audio spectrum in 20 steps. Unfortunately, a class A/B output stage was used instead of the class A one used in the 1073, making it a second choice for tracking in favour of the 1073.
Now the 8173 mic pre- 4 band equalizer module combines the best of both worlds in an 8 3/4" module package, fully compatible with Series 80 consoles. It could be easily described as a 1073 with the mid bands of the 1081. The hi and low Baxandall shelving eq bands are from the 1073 because they sound amazing, but have implemented a choice of 3 hi shelving frecuencies, a la 1084. Flexibility and Tone!
Features
- Classic 4 band EQ and Mic preamp, best of 1073 and 1081
- 80dB Class A Microphone preamplifier (1073)
- High gain positions show a higher impedance, ideal for old ribbon mics.
- 10dB Class A Line Amplifier, Bridging input impedance, balanced and floating.
- Class A, single ended, 2N3055 driven high headroom output stage.
- 4 band EQ with high and low shelf baxandal type eq (1073) and two peaking mid frequency eqs (1081)
- Variable high pass filter
- EQ bypass and phase flip buttons
- 80 series format
Technical Specifications
- High Frequency: +/-16dB shelving, 10, 12, 16 kHz, Baxandall type
- Low Frequency: +/-16dB shelving, 35Hz, 60Hz, 110Hz, 220Hz ,Baxandall type
- Hi-Mid Frequency: +/-18dB peaking, fixed 'Q' , 1.5Khz, 1.8kHz, 2.2Khz, 2.7kHz, 3.3Khz, 3.9kHz, 4.7kHz, 5.6kHz , 6.8kHz and 8.2Khz, dual inductor based
- Low-Mid Frequency: +/-18dB peaking, fixed 'Q' , 220Hz, 270Hz, 330Hz, 390Hz, 470Hz, 560Hz, 680Hz, 820Hz, 1000Hz and 1200Hz, dual inductor based
- High Pass Filter: 18dB per octave slope, 50Hz, 80Hz , 300Hz, inductor based.
- Microphone input impedance: HI, 1200 Ohm min., LO, 300 Ohm min., transformer balanced
- Line input impedance: 10KOhms bridging, transformer balanced
- Output impedance: < 75 Ohms, transformer balanced
- Output (max.): > +26dBm into 600 Ohms, > +32dBu into 10KOhms.
- THD: < 0.025% at 1Khz, < 0.05% at 100Hz.
- Frequency response :20Hz (+0.3dB) to 20Khz (-0.2dB).
- Gain (max.): > 80dB.
- Noise: < -100dBm.
- Power consumption: 110 mA @24VDC
- Dimensions (W x D x H): 4.50 x 31.0 x 22.2 cm, 1x 80 series slot
- Weight: 2.3 kg
