• On sale!
  • -5.00 USD
DL41 / MDL41
  • DL41 / MDL41
  • DL41 / MDL41
Philips

DL41 / MDL41

11.00 USD
6.00 USD Save 5.00 USD

Fine mint glass miniature audio output tubes manufactured in Holland by Philips. These tubes have European-style 8-pin with notched glass bases. They are designed as output tubes for battery radios, and may be used singly or in push pull to produce nearly 2 watts output. Filament is centre-tapped to operate on either 1.4 volts or 2.8 volts. Sturdy gray plates and vertical posts, with top halo gatters, and thick glass enveloppe complement these tubes. They are identified in white PHILIPS MINIWATT DL41, and boxed in standard yellow, red and blus boxes marked PHILIPS MINIWATT DL41 and pin connection diagramme.

Condition

Tube Matching
Tube Matching
6.00 USD by tube

WHY ?

A tube may have one, two, or three internal sections depending on the purpose of the tube; somtimes these sections are all the same, sometimes they are different. Due to manufacturing and material tolerances, there may be slight differences between the original specification and the actual tube. Tube matching tests each one of these internal sections and selects tubes, compared to original specifications at manufacture, for balanced performance and good sound.

HOW ?

All our tubes are tested by us prior to packing on our Stark, AVO, Simpson or RF Laboratories Inc. calibrated testers. On request for tube matching, tubes are matched for Mutual Conductance in Micromhos and Plate Current in Milliamps on our Amplitrex or Radioelec Duovac testers, with results printed for each  individual tube. Certain tubes difficult to test are matched for Mutual Conductance in Micromhos only on one of our regular calibrated testers. On request we can also test for Microphonics.
Quantity

Philips
70 Items

Data sheet

Base
8 pin Mazda Octal K8B
Boite type
2/1
Emplacement
50
Quide
2264
Fonction
Pentode