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STM-1 Thru STP-1
STM-1 Microphone To Line Level Preamplifier
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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
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!
STM-1 YDI Price $106.30
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STM-2 Adjustable Microphone to Line Level Preamplifier
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ANYWHERE YOU NEED...
Low-Noise mic preamp
Adjustable output levels
Hi or Lo-Z mic inputs
Mic input to Line Outputs
Two balanced or unbalanced outputs
Internal/External Phantom Capability
RF filtered inputs
APPLICATION: The STM-2 is a quality low-noise microphone preamplifier designed for use in commercial sound, broadcast, and recording. The STM-2 is very flexible, with gain adjustment from off to +65 dB, two balanced or unbalanced outputs, and available phantom supply input! Its ultra-low distortion and low-noise performance make it the best choice, even when larger preamps could be used! The single-ended supply input range is from 12v to 33 Vdc! Each output drives high or low impedance loads.
STM-2 YDI Price $145.93
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STM-2X Switchable Low-Noise Microphone Preamplifier
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ANYWHERE YOU NEED...
Quiet Switching of A Condenser Mic
Remote Microphone Soft-Switching
Switched Mic-Level Source with Mic or Line-Level Output
Remote Toggle or Push-to-Talk Switching
APPLICATION: The STM-2X is the ideal choice in many installations where a microphone preamplifier is required, and is the ideal choice where either a toggle-type switch or push-to-talk switch is to be provided for microphone control, particularly if condenser microphones are used.
The STM-2X features a balanced mic-level input, and both a line-level and mic-level output. The input and each output may be wired balanced or unbalanced. A 25-turn trimming potentiometer is provided for precise level adjustment whether the module is being used as a mic-level switch, or as a switched mic-to-line preamplifier. A phantom voltage input is provided for use with condenser mics. The 24 Vdc power source is typically used as the phantom supply, requiring no other external phantom supply. These features permit the STM-2X to be used as a manually switched mic preamp, or as a mic-level remote switch for dynamic or condenser microphones. The mic-level output from the STM-2X may be safely connected to other equipment mic inputs which produce phantom voltage.
It is frequently necessary to provide user accessible switching for condenser microphones. This may include a simple mic on/off switch, push-to-talk or a ‘cough’ button switch. Conventional methods of either shorting or opening the microphone line results in loud audible ‘pops’ due to the phantom voltage on the mic line. For these applications, the STM-2X provides quiet, solid state ‘soft-switching’ with no disruption to the phantom voltage. The output of the STM-2X is turned ‘on’ by grounding the control terminal, either by a switch or by any of the SLAVE terminals from other RDL products.
Wherever mic signals need to be switched, or switched and preamplified, the STM-2X is the ideal choice. Use the STM-2X individually, or combine it with other RDL® Rack-Up® or STICK-ON products as part of a complete audio/video system.
STM-2X YDI Price $165.26
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STM-DA3 Mic Level Distribution Amplifier
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ANYWHERE YOU NEED...
To Feed 1 Microphone to 3 Mic Inputs
Electrical and Audio Isolation
Ultra Low-Noise
Ultra Low-Distortion
Excellent Phase Response
Versatility of STICK-ON Compactness
Professional High Quality Appearance
RDL's Exclusive Dual LED VU Metering
APPLICATION: The STM-DA3 is designed for use in quality commercial sound, broadcast and recording applications. The 1.2 kOhm balanced input accepts a wide variety of microphone input levels without loading professional low impedance microphones. A multi-turn trimmer is user adjustable for either gain or loss in order to match the facility standard microphone levels. Three balanced outputs provide nearly total isolation between the output lines. Unlike mic-splitting transformer systems, the STM-DA3 also provides audio isolation. In fact, the audio isolation is so good that a +4 dBu signal fed into one output is still below the noise floor on the adjacent output. Loading of one output, including a direct short, has no effect on the other outputs.
The STM-DA3 is built on the electrical architecture of RDL's low- noise studio quality mic preamplifiers. Dynamic or condenser microphones may be used with the STM-DA3. Standard 24V phantom is supplied to the input when the supply voltage is connected to the PHM terminal. Optimum operating level is set using RDL's unique Dual-LED VU meter, located adjacent to the terminal block. A green LED illuminates at 15 dB below optimum level. The intensity of the green LED progresses from minimum to full intensity over a 15 dB range. The adjacent red LED illuminates when the operating level exceeds the optimum level. This makes the STM-DA3 easy to set up without any external test equipment, and operating levels may be monitored at the module.
STM-DA3 YDI Price $140.13
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STP-1 Universal Attenuator
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ANYWHERE YOU NEED...
To reduce audio feed
To feed audio into equipment
To preset audio levels
To precisely match audio levels
To prevent input overload
To increase audio input headroom
Two adjustable attenuators in one package
APPLICATION: The STP-1 is a pair of convenient attenuator pads that can be located at the precise location that attenuation is needed! The low-cost STP-1 eliminates the costly labor of figuring and assembling fixed pads. Multi-turn trimmers in the STP-1 permit precise adjustment of levels without the need to connect any jumpers or external resistors. The STP-1 operates in either high or low impedance, balanced or unbalanced circuits. The wiring legend is printed on the case for easy installation.
STP-1 YDI Price $61.85
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Typical Performance reflects product at publication time exclusive of EMC data, if any, supplied with product. Specifications subject to change without notice.
RDL, Radio Design Labs, the Radio Design Labs logo, STICK-ON, Rack-Up and the Rack-Up logo are registered trademarks of Radio Design Labs. TX, Flat-Pak, SourceFlex, Sure-Lok and Specialists in Practical Precision Engineering are trademarks of Radio Design Labs.
Copyright © 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003 Radio Design Labs
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Prices current 4/20/2007. Prices are subject to change without notice. The products shown above are typically stocked by "You-do-it" Electronics Center. We try to maintain a current listing of products available. Occasionally products which are out of production may be listed on our website.
Please E-mail Sales@youdoitelectronics.com or Call for current availability. Prices are subject to change without notice. All orders are subject to acceptance by this company & our Vendor in accordance with its standard acknowledgement form. All prices are subject to all applicable State and/or Local sales taxes. Terms are MasterCard, Visa, Discover, or American Express or Check with order, unless other arrangements are made with our credit department.
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