Precision Audio and AV Interface Products

Radio Design Labs

TX-1W Music on Hold Amplifier - 1 Watt

  • Feed Audio into Telephone Equipment Music-on-Hold Input
  • Adjustable Audio Level
  • Optimized Sound Quality
  • Unbalanced Output, up to 1 Watt
  • Balanced Transformer driver Output
  • Ultra Compact Size
  • Overview
  • Specifications
  • Related Products
  • Accessories
  • Downloads
  • How to Buy
  • Product Series
  • Dimensions

The TX-1W is the ideal choice in on-site installations where the central telephone switching unit needs to be fed with music, voice or combined music/voice signals.

There is a wide variety of telephone instruments in use. When a caller is placed on hold, the audio quality perceived is affected by the caller's own telephone, as well as the telephone lines, central switch and on-site equipment. Due to these variations, conventional audio amplifiers used as music-on-hold drivers frequently produce annoying artifacts at the caller's earpiece. Attempts to reduce listener fatigue through high-frequency rolloff alone tend to produce a muffled, tired sound.

The TX-1W features a spectral response specifically characterized to match the broadest variations in telephone audio distribution, producing a lively, crisp, interesting sound without the annoying resonances and distortions prone to creating listener fatigue.

Input:
Unbalanced via standard phono jack
Input Level:
-10 dBV nominal
Gain:
-10 dB to +25 dB (adjustable)
Frequency Response:
Tailored to phone systems within 20 Hz to 20 kHz spectrum
THD+N:
< 0.5% (1 kHz @ Maximum Output 1 W)
< 0.2% (1 kHz @ +4 dBu)
Residual Noise:
< -75 dB (referred to 600 Ω +4 dBu, or to 1 W RMS)
Outputs:
1 Balanced @ 600 Ω to drive transformer inputs 1 Unbalanced adjustable line-level to 1 W
Ambient Operating Environment:
0° C to 40° C
Power Requirement:
GROUND-REFERENCED, 24 Vdc @ 150 mA
Package Type:
Cardboard Box
Package Dimensions:
2 x 2 x 4 in.
Shipping Weight:
0.275 lbs.
WEEE weight:
0.215 lbs.
Tariff code:
8543.70.9860

Documents:
Format
PDF
CAD Files:
Format
High Res Images:
Format
TIF
Declaration of Conformity:
Format
PDF

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TX SERIES

TX Series modules are application-specific modules for the A/V and related industries. Many TX modules offer galvanic transformer isolation. Module functions include signal detection, switching, amplification, format conversion, line driving, mixing, distribution, twisted-pair sending/receiving and more. Each TX is a compact module engineered to provide higher performance and longer life than other industry products. TX modules are solid encapsulated hybrid circuits in durable industrial black plastic/steel or aluminum enclosures with clear bold white lettering for the jacks, terminal block connections, trimming controls and switches.

TX modules are constructed in two widths and heights. All TXs are the same length, have the same mounting hole configuration, and are compatible with all TX series mounting options. A complete range of mounting options is available for systems utilizing multiple TX modules. A single TX module may be mounted right where its function is needed, and are widely used in system designs with OEM or other RDL products. TX SERIES modules are designed and manufactured in the U.S.A.

TX-1W TX-1W