RDL STP-1 2-Channel Universal Audio Attenuators

The STP-1 Universal Audio Attenuator 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.

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

Features

• Audio level attenuation
• Adjust audio level into equipment
• Preset audio levels
• Increase audio output headroom
• Two adjustable attenuators in one package

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