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Radio Design Labs STP-1
Dual-Channel Universal Attenuator

OUR PART #:  STP1

Radio Design Labs' STP-1 is part of a group of products in the STICK-ON series, designed by Radio Design Labs.
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List Price: $83.06
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Radio Design Labs STP-1
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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
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