Radio Design Labs STP-1
Dual-Channel Universal Attenuator

OUR PART #  STP1

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Radio Design Labs' STP-1 is part of a group of products in the STICK-ON series, designed by Radio Design Labs. The durable bottom adhesive permits quick, permanent or removable mounting nearly anywhere or it may be used with RDL’s racking accessories. The STP-1 is a convenient attenuator pad that can be located at the precise location that attenuation is needed without the normal unsightly twisted-resistor pads that are all so common.

Whether you need to reduce the input level to a machine to improve headroom, feed a line level signal into a mic level input, or simply lower the level of an audio line to match your systems standard levels, the STP-1 is the simple and economic answer. Use the STP-1 combined with other RDL RACK-UP®, STICK-ON, TX™, or FLAT-PAK™ series products as part of a complete audio/video system.

Radio Design Labs STP-1 Applications:

  • 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

Radio Design Labs STP-1 Features:

  • Permits precise calibration of all levels in your audio system
  • 2 attenuators provided in each STP-1
  • Multi-turn trimmers for precise adjustment
  • Very wide range of attenuation; from speaker level inputs to mic outputs
  • Operates with balanced or unbalanced inputs/outputs
  • No lugs required for reliable connections
  • Full operation in either high or low impedance circuits
  • Attenuator pads totally self-contained; no jumpers to select or resistors to attach
  • Quickly & efficiently attenuate any signal; cleanly, neatly, and with proper impedance match
  • Recessed adjustment discourages tampering

Radio Design Labs STP-1 Specifications:

  • Circuit Type: Passive
  • Attenuation:
    • High Impedance Balanced Line: Adjustable -1 dB to -85 dB
    • Low Impedance Balanced Line: Adjustable -5 dB to -35 dB
    • High Impedance Unbalanced Line: Adjustable -1 dB to -85 dB
  • Nominal Impedance: High Impedance 10 kohm; Low Impedance 600 ohm
  • Adjustment: Screwdriver trimming adjustment, 15 turns continuous
  • Circuit type: Passive modified (H) & (T) pads
  • Connections:
    • Terminal block accepts 14-30 gauge wire
    • No lugs required
    • Input/output connection legend located on STP-1
  • Maximum Signal Inputs:
    • High Impedance Balanced Line: +33 dB, 35 V RMS
    • Low Impedance Balanced Line: +27 dB; 18 V RMS
    • High Impedance Unbalanced Line:+35 dB, 45 V RMS
  • Reference Levels:
    • Line level is +10 dB to -10dB
    • Mic level is -45 dB to -65dB
    • 0 dB = 0.775 V RMS into specified load
Rackmount System for 12 Stick-On Units
Radio Design Labs STR-19A Rackmount System for 12 Stick-On Units
Radio Design Labs' STR-19A Racking System holds up to 12 STICK-ONs in a 19" rack and only occupies two rack spaces.
Stick-On Mounting Rack for 10 Units
Radio Design Labs SR-10 Stick-On Mounting Rack for 10 Units
Radio Design Labs' STR-10 Racking System holds up to 10 STICK-ON units.  It holds STICK-ONs at an angle allowing for control adjustment from either the edge of a STICK-ON, or the top (depending on where the adjustment is located on ...
Din Rail Adaptor for STICK-ON
Radio Design Labs DRA-35S Din Rail Adaptor for STICK-ON
The DRA-35S is a 35 mm DIN rail mounting bracket that provides positive mounting for any RDL STICK-ON® module. The oblique mounting angle of the DRA-35S allows an installer to mount several STICK-ON modules to a single DIN rail. Access to ...
Mounting Kit for STICK-ON, TX, or Rack-Up module
Radio Design Labs MB1-RDL Mounting Kit for STICK-ON, TX, or Rack-Up module
Two mounting brackets mounts a STICK-ON, TX, or Rack-Up module to a flat surface.
Rackmount Kit for 10 Stick-On Units
Radio Design Labs STR-19B Rackmount Kit for 10 Stick-On Units
Radio Design Labs' STR-19B Racking System holds up to 10 STICK-ON unitss in a 19 inch rack and only occupies two rack spaces. The STR-19B holds STICK-ONs at an angle allowing for control adjustment from either the edge of a STICK-ON, or ...
Usually ships in 7-14 business days.
Need it sooner? Call us!
Mounting Frame for Stick/TX
Radio Design Labs SR-4 Mounting Frame for Stick/TX
Radio Design Labs' SR-4 is a universal module chassis that can mount to a backboard, wall or nearly any other support. It provides mounting for 4 STICK-ON power amplifiers or 7 standard STICK-ON modules. TX ™ modules may also be mounted. ...
Usually ships in 7-14 business days.
Need it sooner? Call us!
STICK-ON Series 19"W Mounting Rack for up to12 Modules
Radio Design Labs SR-12A STICK-ON Series 19"W Mounting Rack for up to12 Modules
Radio Design Labs' SR-12A chassis can be mounted in a rack or on a backboard to provide mounting of 12 STICK-ONs.
Usually ships in 7-14 business days.
Need it sooner? Call us!
Mounting Strip for STICK-ON Units
Radio Design Labs Smk 12 Mounting Strip for STICK-ON Units
The SMK-12 allows removable surface (up to 6 units) or edge (typically 12, max. 16) mounting of STICK-ON units. They can be fastened to its surface using screws or adhesive foam pads.
Usually ships in 7-14 business days.
Need it sooner? Call us!
Mounting Bracket for STICK-ON Modules
Radio Design Labs ST-RRB1 Mounting Bracket for STICK-ON Modules
Radio Design Labs' ST-RRB1 mounting kit contains a bracket to attach a STICK-ON module to a rear rack rail or to any flat surface. The module slides into the holder and snaps into position. The module may easily be removed.
Usually ships in 7-14 business days.
Need it sooner? Call us!
Detachable Terminal Block
Radio Design Labs Dtb Rdl Detachable Terminal Block
Use DTB's to quickly detach and reattach wiring harness to STICK-ON units.
Usually ships in 7-14 business days.
Need it sooner? Call us!

Radio Design Labs STP-1
Dual-Channel Universal Attenuator

OUR PART #  STP1

Product Information:

Radio Design Labs' STP-1 is part of a group of products in the STICK-ON series, designed by Radio Design Labs. The durable bottom adhesive permits quick, permanent or removable mounting nearly anywhere or it may be used with RDL’s racking accessories. The STP-1 is a convenient attenuator pad that can be located at the precise location that attenuation is needed without the normal unsightly twisted-resistor pads that are all so common.

Whether you need to reduce the input level to a machine to improve headroom, feed a line level signal into a mic level input, or simply lower the level of an audio line to match your systems standard levels, the STP-1 is the simple and economic answer. Use the STP-1 combined with other RDL RACK-UP®, STICK-ON, TX™, or FLAT-PAK™ series products as part of a complete audio/video system.

Radio Design Labs STP-1 Applications:

  • 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

Radio Design Labs STP-1 Features:

  • Permits precise calibration of all levels in your audio system
  • 2 attenuators provided in each STP-1
  • Multi-turn trimmers for precise adjustment
  • Very wide range of attenuation; from speaker level inputs to mic outputs
  • Operates with balanced or unbalanced inputs/outputs
  • No lugs required for reliable connections
  • Full operation in either high or low impedance circuits
  • Attenuator pads totally self-contained; no jumpers to select or resistors to attach
  • Quickly & efficiently attenuate any signal; cleanly, neatly, and with proper impedance match
  • Recessed adjustment discourages tampering

Radio Design Labs STP-1 Specifications:

  • Circuit Type: Passive
  • Attenuation:
    • High Impedance Balanced Line: Adjustable -1 dB to -85 dB
    • Low Impedance Balanced Line: Adjustable -5 dB to -35 dB
    • High Impedance Unbalanced Line: Adjustable -1 dB to -85 dB
  • Nominal Impedance: High Impedance 10 kohm; Low Impedance 600 ohm
  • Adjustment: Screwdriver trimming adjustment, 15 turns continuous
  • Circuit type: Passive modified (H) & (T) pads
  • Connections:
    • Terminal block accepts 14-30 gauge wire
    • No lugs required
    • Input/output connection legend located on STP-1
  • Maximum Signal Inputs:
    • High Impedance Balanced Line: +33 dB, 35 V RMS
    • Low Impedance Balanced Line: +27 dB; 18 V RMS
    • High Impedance Unbalanced Line:+35 dB, 45 V RMS
  • Reference Levels:
    • Line level is +10 dB to -10dB
    • Mic level is -45 dB to -65dB
    • 0 dB = 0.775 V RMS into specified load
Rackmount System for 12 Stick-On Units
Radio Design Labs STR-19A Rackmount System for 12 Stick-On Units
Radio Design Labs' STR-19A Racking System holds up to 12 STICK-ONs in a 19" rack and only occupies two rack spaces.
Stick-On Mounting Rack for 10 Units
Radio Design Labs SR-10 Stick-On Mounting Rack for 10 Units
Radio Design Labs' STR-10 Racking System holds up to 10 STICK-ON units.  It holds STICK-ONs at an angle allowing for control adjustment from either the edge of a STICK-ON, or the top (depending on where the adjustment is located on ...
Din Rail Adaptor for STICK-ON
Radio Design Labs DRA-35S Din Rail Adaptor for STICK-ON
The DRA-35S is a 35 mm DIN rail mounting bracket that provides positive mounting for any RDL STICK-ON® module. The oblique mounting angle of the DRA-35S allows an installer to mount several STICK-ON modules to a single DIN rail. Access to ...
Mounting Kit for STICK-ON, TX, or Rack-Up module
Radio Design Labs MB1-RDL Mounting Kit for STICK-ON, TX, or Rack-Up module
Two mounting brackets mounts a STICK-ON, TX, or Rack-Up module to a flat surface.
Rackmount Kit for 10 Stick-On Units
Radio Design Labs STR-19B Rackmount Kit for 10 Stick-On Units
Radio Design Labs' STR-19B Racking System holds up to 10 STICK-ON unitss in a 19 inch rack and only occupies two rack spaces. The STR-19B holds STICK-ONs at an angle allowing for control adjustment from either the edge of a STICK-ON, or ...
Usually ships in 7-14 business days.
Need it sooner? Call us!
Mounting Frame for Stick/TX
Radio Design Labs SR-4 Mounting Frame for Stick/TX
Radio Design Labs' SR-4 is a universal module chassis that can mount to a backboard, wall or nearly any other support. It provides mounting for 4 STICK-ON power amplifiers or 7 standard STICK-ON modules. TX ™ modules may also be mounted. ...
Usually ships in 7-14 business days.
Need it sooner? Call us!
STICK-ON Series 19"W Mounting Rack for up to12 Modules
Radio Design Labs SR-12A STICK-ON Series 19"W Mounting Rack for up to12 Modules
Radio Design Labs' SR-12A chassis can be mounted in a rack or on a backboard to provide mounting of 12 STICK-ONs.
Usually ships in 7-14 business days.
Need it sooner? Call us!
Mounting Strip for STICK-ON Units
Radio Design Labs Smk 12 Mounting Strip for STICK-ON Units
The SMK-12 allows removable surface (up to 6 units) or edge (typically 12, max. 16) mounting of STICK-ON units. They can be fastened to its surface using screws or adhesive foam pads.
Usually ships in 7-14 business days.
Need it sooner? Call us!
Mounting Bracket for STICK-ON Modules
Radio Design Labs ST-RRB1 Mounting Bracket for STICK-ON Modules
Radio Design Labs' ST-RRB1 mounting kit contains a bracket to attach a STICK-ON module to a rear rack rail or to any flat surface. The module slides into the holder and snaps into position. The module may easily be removed.
Usually ships in 7-14 business days.
Need it sooner? Call us!
Detachable Terminal Block
Radio Design Labs Dtb Rdl Detachable Terminal Block
Use DTB's to quickly detach and reattach wiring harness to STICK-ON units.
Usually ships in 7-14 business days.
Need it sooner? Call us!
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