MICROPHONE PRE-AMPLIFIER MODEL 1070-A,

POWER SUPPLY MODEL 1070-P.

Designed by Dick Sequerra


1070-A


MODEL 1070-A DESIGN FEATURES
• Adjustable gain, in one dB steps, from +10dB to +70dB.
• Input loading of 150 Ohm, 1.2 kilo Ohm, and 5 kilo Ohm.
• Plus (+)48 volt phantom power with indicator.
• Peak detecting output level meter with 13 steps from -30 dBm to +21 dBm with 0 dBm set at +4 dBm operating level.
• Three position phase reversal switch; normal, mute and reverse.
• Selectable high pass filter, three position switch; off, 100 hz, 180hz.
• External regulated power supply, capable of powering four model 1070-A pre-amps.
• A double regulated power supply is achived by a second internal regulated power supply within the model 1070-A.
• The model 1070-A has been designed to operate close to the microphone (IE 3 feet or less) and therfore to drive long cables at line level with a cable capacity of as much as 0.1 micro farads, up to 300 feet.

ELECTRICAL SPECIFICATIONS
• Minimum gain: +10 dB.
• Maximum gain: +70 dB.
• Frequency response: dc thru 400 khz; -3dB.
• Internal noise: one (1) nano volt/root hz.
• Harmonic distortion: 0.0001% , dc thru 40 khz at a 150 Ohm input.
• Slew rate: 20 volts / micro second.
• Phase linearity: minus 12 degrees at 100khz.
• Maximum input level greater than 5 volts; balanced.
• Maximum output level +27 dBu; balanced.
• Input impedance Z: 150 Ohm, 1.2k Ohm, and 5 k Ohm.
• Output impedance: 20 Ohm.
• Impulse rise time: 160 nano seconds.
• Intermodulation distortion/CCIR, @ 10 khz/10.1 khz: 0.0001%.
• High pass filter (- 6 dB/octave ) at 100hz, and 180hz.

MODEL 1070-A MECHANICAL SPECIFICATIONS
• The model 1070-A is housed in a black anodized aluminum tube:
• Diamater 3 1/2"
• Length 9 7/8"
• Weight, Net: 2 pounds

MODEL 1070-P POWER SUPPLY
1070-P

MODEL 1070-P ELECTRICAL SPECIFICATIONS
• Input voltage: 120 volts, 240 volts @ 50-60 Hz.
• Output regulated voltages, +24 volts. - 24volts, and + 55 volts, available from any one of four jacks.

MODEL 1070-P MECHANICAL SPECIFICATIONS
• Height: 3".
• Width: 6".
• Depth: 8".
• Weight, Net: 7 Pounds.
• Black anodized aluminum case.

LIMITED WARRANTY AND MANUFACTURING INFORMATION
• MODEL 1070-A/1070-P WARRANTY: Unconditionally to the original owner for a period of five (5) years against any manufacturing error or defect.
• R. Sequerra Assoc. Ltd. reserves the right to change and/or modify the MODEL 1070-A/1070-P specifications and prices at any time without notice.

MODEL 1070-A MICROPHONE PRE-AMPLIFIER PRICING AND PURCHASE INFORMATION
• Complete MODEL 1070 systems:
• SYSTEM 4 - Four MODEL 1070-A pre-amps, one MODEL 1070-P power supply with all cables and accessories for four MODEL 1070-A pre-amps and the MODEL 1070-FC aluminum flight case. - $7,500.00.
• SYSTEM 2 - Two MODEL 1070-A pre-amps, one MODEL 1070-P power supply with all cables and accessories for two MODEL 1070-A pre-amps and the MODEL 1070-FC aluminum flight case. - $4,500.00.
• Individual MODEL 1070 components:
• MODEL 1070-A Microphone pre-amp with: one MODEL 1070-PC power cable, one MODEL 1070-MC one meter microphone cable, one MODEL 1070-S mounting strap kit, and tool kit. - $ 1,500.00.
• MODEL 1070-P power supply with one MODEL 1070-PC power cord - $1,000.00.
• MODEL 1070-R rack mount system - $400.00.
• MODEL 1070-FC aluminum flight case with space for: four model 1070-A pre-amps, one MODEL 1070-P power supply, all cables and accessories and tool kit. Flight case includes valve for unpressurized air shipping. - $400.00.
• MODEL 1070-MC Triple shielded one meter microphone cable - $75.00.
• MODEL 1070-PC 25 foot power cable - $100.00.
• MODEL 1070-S mounting strap kit (2 straps) - $30.00.
• Prices subject to change without notice.