BTX Technologies, Inc.
ANYWHERE YOU NEED... STICK-ON Convenience
Hi or Lo-Z Mic Inputs
To Convert Mic Input to Line Level Output
Balanced or unbalanced Outputs
Selectable Phantom Supply Input
RF Filtered Inputs and Outputs
Excellent Performance
You Need The STM-1!
The STM-1 is part of the group of STICK-ON products from Radio Design Labs. The STM-1 is a quality microphone preamplifier designed for use in commercial sound, broadcast, and recording applications.
Its compact size makes it ideally suited for locations were a larger or heavier preamp cannot be used.
Its performance makes it the best choice, even when larger preamps could be used! The single-ended supply input makes the STM-1 the ideal choice for both permanent and mobile equipment installations.
Some features of the STM-1 are:
Balanced microphone input accepts impedances from 150 to 600 ohm
Input circuitry permits connection of unbalanced microphones, or even 4 or 8 ohm speakers in intercom or monitoring applications
Fixed 50 dB gain and ample headroom allow operation with any mic
Phantom supply input terminals allow connection of phantom power when STM-1 is used with condenser microphones
Supply input is single-ended and operates from 12 Vdc to 40 Vdc
Two separate outputs provide for balanced 600 ohm and unbalanced 10 kohm
No lugs required for reliable connections
Convenience of the STICK-ON package yields quick, efficient installation
Use STM-1 in conjunction with other RDL STICK-ONS to make complete audio systems
Anywhere you need a fixed gain mic to line preamplifier, STM-1 is the reliable and cost-effective solution!
Typical Performance
Input Imped.: 150 to 600 ohm balanced; 5 kohm unbalanced
Output Imped.: 150 ohm balanced to drive balanced or unbalanced lines 150 ohm or higher impedance
Freq. Response: 50 Hz to 30 kHz (+/- 1.0 dB)
Gain: 50 dB nominal
THD: less than 0.050%
CMRR: greater than 60 dB (50 Hz to 30 kHz)
Headroom:
greater than 20 dB (24 Vdc supply);
14 dB (12 Vdc supply)
Noise: less than -70 dB below +4 dBu (150 ohm source)
less than -75 dB below +4 dBu (600 ohm source)
Power Requirement: 24 to 33 Vdc @ 25 mA, Ground-referenced
Visual Sound, Inc.
Done
Description
BTX Technologies, Inc.
ANYWHERE YOU NEED... STICK-ON Convenience
Hi or Lo-Z Mic Inputs
To Convert Mic Input to Line Level Output
Balanced or unbalanced Outputs
Selectable Phantom Supply Input
RF Filtered Inputs and Outputs
Excellent Performance
You Need The STM-1!
The STM-1 is part of the group of STICK-ON products from Radio Design Labs. The STM-1 is a quality microphone preamplifier designed for use in commercial sound, broadcast, and recording applications.
Its compact size makes it ideally suited for locations were a larger or heavier preamp cannot be used.
Its performance makes it the best choice, even when larger preamps could be used! The single-ended supply input makes the STM-1 the ideal choice for both permanent and mobile equipment installations.
Some features of the STM-1 are:
Balanced microphone input accepts impedances from 150 to 600 ohm
Input circuitry permits connection of unbalanced microphones, or even 4 or 8 ohm speakers in intercom or monitoring applications
Fixed 50 dB gain and ample headroom allow operation with any mic
Phantom supply input terminals allow connection of phantom power when STM-1 is used with condenser microphones
Supply input is single-ended and operates from 12 Vdc to 40 Vdc
Two separate outputs provide for balanced 600 ohm and unbalanced 10 kohm
No lugs required for reliable connections
Convenience of the STICK-ON package yields quick, efficient installation
Use STM-1 in conjunction with other RDL STICK-ONS to make complete audio systems
Anywhere you need a fixed gain mic to line preamplifier, STM-1 is the reliable and cost-effective solution!
Typical Performance
Input Imped.: 150 to 600 ohm balanced; 5 kohm unbalanced
Output Imped.: 150 ohm balanced to drive balanced or unbalanced lines 150 ohm or higher impedance
Freq. Response: 50 Hz to 30 kHz (+/- 1.0 dB)
Gain: 50 dB nominal
THD: less than 0.050%
CMRR: greater than 60 dB (50 Hz to 30 kHz)
Headroom:
greater than 20 dB (24 Vdc supply);
14 dB (12 Vdc supply)
Noise: less than -70 dB below +4 dBu (150 ohm source)
less than -75 dB below +4 dBu (600 ohm source)
Power Requirement: 24 to 33 Vdc @ 25 mA, Ground-referenced
BTX Technologies, Inc.
ANYWHERE YOU NEED... STICK-ON Convenience
Hi or Lo-Z Mic Inputs
To Convert Mic Input to Line Level Output
Balanced or unbalanced Outputs
Selectable Phantom Supply Input
RF Filtered Inputs and Outputs
Excellent Performance
You Need The STM-1!
The STM-1 is part of the group of STICK-ON products from Radio Design Labs. The STM-1 is a quality microphone preamplifier designed for use in commercial sound, broadcast, and recording applications.
Its compact size makes it ideally suited for locations were a larger or heavier preamp cannot be used.
Its performance makes it the best choice, even when larger preamps could be used! The single-ended supply input makes the STM-1 the ideal choice for both permanent and mobile equipment installations.
Some features of the STM-1 are:
Balanced microphone input accepts impedances from 150 to 600 ohm
Input circuitry permits connection of unbalanced microphones, or even 4 or 8 ohm speakers in intercom or monitoring applications
Fixed 50 dB gain and ample headroom allow operation with any mic
Phantom supply input terminals allow connection of phantom power when STM-1 is used with condenser microphones
Supply input is single-ended and operates from 12 Vdc to 40 Vdc
Two separate outputs provide for balanced 600 ohm and unbalanced 10 kohm
No lugs required for reliable connections
Convenience of the STICK-ON package yields quick, efficient installation
Use STM-1 in conjunction with other RDL STICK-ONS to make complete audio systems
Anywhere you need a fixed gain mic to line preamplifier, STM-1 is the reliable and cost-effective solution!
Typical Performance
Input Imped.: 150 to 600 ohm balanced; 5 kohm unbalanced
Output Imped.: 150 ohm balanced to drive balanced or unbalanced lines 150 ohm or higher impedance
Freq. Response: 50 Hz to 30 kHz (+/- 1.0 dB)
Gain: 50 dB nominal
THD: less than 0.050%
CMRR: greater than 60 dB (50 Hz to 30 kHz)
Headroom:
greater than 20 dB (24 Vdc supply);
14 dB (12 Vdc supply)
Noise: less than -70 dB below +4 dBu (150 ohm source)
less than -75 dB below +4 dBu (600 ohm source)
Power Requirement: 24 to 33 Vdc @ 25 mA, Ground-referenced
BTX Technologies, Inc.
ANYWHERE YOU NEED... STICK-ON Convenience
Hi or Lo-Z Mic Inputs
To Convert Mic Input to Line Level Output
Balanced or unbalanced Outputs
Selectable Phantom Supply Input
RF Filtered Inputs and Outputs
Excellent Performance
You Need The STM-1!
The STM-1 is part of the group of STICK-ON products from Radio Design Labs. The STM-1 is a quality microphone preamplifier designed for use in commercial sound, broadcast, and recording applications.
Its compact size makes it ideally suited for locations were a larger or heavier preamp cannot be used.
Its performance makes it the best choice, even when larger preamps could be used! The single-ended supply input makes the STM-1 the ideal choice for both permanent and mobile equipment installations.
Some features of the STM-1 are:
Balanced microphone input accepts impedances from 150 to 600 ohm
Input circuitry permits connection of unbalanced microphones, or even 4 or 8 ohm speakers in intercom or monitoring applications
Fixed 50 dB gain and ample headroom allow operation with any mic
Phantom supply input terminals allow connection of phantom power when STM-1 is used with condenser microphones
Supply input is single-ended and operates from 12 Vdc to 40 Vdc
Two separate outputs provide for balanced 600 ohm and unbalanced 10 kohm
No lugs required for reliable connections
Convenience of the STICK-ON package yields quick, efficient installation
Use STM-1 in conjunction with other RDL STICK-ONS to make complete audio systems
Anywhere you need a fixed gain mic to line preamplifier, STM-1 is the reliable and cost-effective solution!
Typical Performance
Input Imped.: 150 to 600 ohm balanced; 5 kohm unbalanced
Output Imped.: 150 ohm balanced to drive balanced or unbalanced lines 150 ohm or higher impedance
Freq. Response: 50 Hz to 30 kHz (+/- 1.0 dB)
Gain: 50 dB nominal
THD: less than 0.050%
CMRR: greater than 60 dB (50 Hz to 30 kHz)
Headroom:
greater than 20 dB (24 Vdc supply);
14 dB (12 Vdc supply)
Noise: less than -70 dB below +4 dBu (150 ohm source)
less than -75 dB below +4 dBu (600 ohm source)
Power Requirement: 24 to 33 Vdc @ 25 mA, Ground-referenced
Supplier's Site
Technical Specifications
Visual Sound, Inc.
Product Category
Audio Amplifiers and Preamplifiers
Product Number
RDL-STM1
Product Name
Microphone Preamplifier
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