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Lowell Manufacturing  |  SKU: TLM-600 | Item No. 0181-1266

TLM600 Transformer Impedance Matching-70/25V In to 600/8ohm Out

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MSRP: $113.96
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Product Features

  • Step down 70V, 25V, and 8 ohm speaker lines to feed amplifier inputs. 
  • Feed balanced lines from amplifier output. 
  • Convenient mounting and connections  
  • Detachable Phoenix-style terminals and mounting holes for fast connection and convenient mounting to a wall or onto a rack panel with mounting holes for electronic accessories.
  • Power Rating: 200mW max.
  • Frequency Response: 50Hz – 20kHz ±2dB
  • Insertion Loss: 1.5dB @ 1kHz


  • Dimensions:  5″ x 3″ x 1.75″
  • Weight:         .75 lbs

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The streamlined impedance matching transformer is designed to simplify wiring for 70V, 25V or 8ohm speaker level conversion to amplifier input. Input pads (70V, 25V) can be added to the circuit simply by selecting positions on two dip switches (no jumpers needed). A 100Kohm potentiometer and RCA connector are also permanently wired into the circuit (no jumpers needed).

NOTE: This simple design does not allow the transformer to be accessed directly via terminal strip connections due to pad resistors that are permanently wired in series with transformer wiring. High impedance to low impedance conversion is still possible through the transformer; however, this device is not recommended for exact 25Kohm to 600ohm impedance matching. 


WARNING: This product may expose you to chemicals which are known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information, go to www.P65Warnings.ca.gov.