Radio Design Labs D-Sh1 – Stereo Headphone Amplifier With Independent Volume Controls

Description

• Description
• Specifications
• Downloads

• RDL D/DS-SH1 Stereo Headphone Amplifier | Panel & Wall Mount | Balanced/Unbalanced Inputs

  The D/DS SH1 is used in applications requiring headphones of any impedance to be driven from consumer or professional audio sources. The D/DS-SH1 is ideally suited to applications as diverse as language translation, museums, interview studios and music stores. The module mounts conveniently in a precut opening in a wood or metal enclosure or in various RDL mounting accessories. The D/DS SH1 is a dual channel headphone amplifier with balanced/unbalanced left and right inputs. Each input accepts operating levels between -20 dBV and +20 dBu. Two recessed slide switches located on the side of the rear enclosure are set prior to mounting the module. One switch is provided for setting the input sensitivity. The mode switch selects between stereo and mono operation. In the mono position, the left input is used to drive both output channels. When the module is used in a monaural system, only the left channel input must be wired. The front panel level control is a long life potentiometer controlling matched VCAs. Audio does not pass through this control, assuring years of noise free level adjustment. The output amplifiers deliver more than 50 mW into either high or low impedance headphones through a durable, metal ¼” (6.3 mm) standard headphone jack. Module operation is from a 24 Vdc ground referenced power supply. It can also operate from a 12 Vdc supply with a 6 dB reduction in headroom and a maximum output power of 10 mW.
  Features
  Panel-Mounted Headphone Amplifier
  Wall-Mounted Headphone Amplifier
  Integral Long-Life VCA Stereo Level Control
  Balanced or Unbalanced Inputs
  Switch-Selectable Input Sensitivity
  Switch-Selectable Mono (Left) or Stereo Operation
  Amplifier To Drive High or Low Impedance Headsets
  Convenience of Decora® Mounting Possibilities
  Dimensions

  

• Feature	Specification
  Inputs	2 × 10 kΩ balanced or unbalanced bridging
  Input Level	+4 dBu nominal (Low sensitivity) -15 dBV nominal (High sensitivity)
  Max Input Level	+21 dBu (Low sensitivity) +3 dBu (High sensitivity)
  Output Signal (Rated)	10 mW into 100 Ω
  Output Signal (Max)	50 mW into 100 Ω
  THD+N	<0.5% @ 1 kHz
  Frequency Response	30 Hz – 20 kHz (±2 dB)
  Noise	<-70 dB below normal operating level
  Gain	User-adjustable 18.5 dB (max, High sensitivity) Unity (max, Low sensitivity)
  CMRR	>60 dB (50–120 Hz)
  Crosstalk	Below noise floor (20 Hz – 20 kHz)
  Operating Environment	0°C to 55°C
  Power Requirement	24 VDC @ 50 mA (ground-referenced)
  Package Type	Cardboard Box
  Tariff Code	8543.70.9860
  WEEE Weight	0.33 lbs
  Shipping Weight	0.475 lbs
  Package Dimensions	3.625 × 4.625 × 2.125 in

• Description	Downloads
  Radio Design Labs Stereo Headphone Amplifier | D-SH1 DataSheet	Download

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