HISTORY:
Working through yet more reel to reel related accessories and media plus some PHILIPS reel to reel tape machines, models N4504 & N4512
These lamps are used in either model
They are not your ordinary incandescent lamp, designed for reliable long life AND the glass envelope has a small dimple flat spot/diffuser/lens in the top of the glass! I haven't actually seen one of these before and I guess the idea is to spread (or perhaps focus) the light emitted by the filament onto a specific area on the rear of the VU Meter.
SPECIAL NOTE: Nothing worse than having just one or both VU Meters lacking that reassuring glow from a lamp but before you automatically assume the filament has gone "open", take out the old lamp and clean both the body and end contact. I have come across a number of these back lit systems where the lamp had stopped working and in fact just a good cleanup of the lamp contacts solved the problem.
Not a bad machine from Philips, 3 motors, separate Read and Write heads in addition to the Erase head, 3 run speeds but not all that impressed with the extensive use of plastic for the case, albeit high impact very strong plastic! This makes for a pretty lightweight machine compared to the Otari 5050's and Studer B67's I have lugged around in the past!
There was actually very little "wrong" with the machines I am "parting out" but I felt they were more useful as "organ donors" to bring other machines back to life (or improve their functioning) so they are currently being "operated on" to extract useful components.
I am very much "into" sustainability and a complete tape machine represents a LOT of embedded energy and to waste that embedded energy is a very bad thing, even worse is to bury it in landfill and subsequently poison our environment!
What is embedded energy?
Embedded energy is a measurement of the total energy that was used to create a component, a module or a complete piece of equipment originally.
HERE is some more information about Ee
PHILIPS - Reel To Reel Tape Recorder SPARE PART
Incandescent Lamp
Model: N4504 OR N4512
Part # 4H13440326
VU Meter Backlight Lamp
Base type: Edison
Base markings: PHILIPS 6V 0.4A HOLLAND
DIMENSIONS:
11mm Diameter round glass envelope x 23mm total Length
COSMETIC CONDITION:
USED
CLEAN
NO broken parts
Glass envelope is securely attached to the screw base
TESTING:
Of course I have tested each lamp that I have available (for the record, although these machines are "dated" not one lamp had failed.)
Cold resistance 6.6 Ohm
I have now packed these lamps individually in clear plastic packets, surrounded by bubblewrap, awaiting a new owner
*** Where the photograph shows multiple lamps, this advertisement is for ONE LAMP ONLY not all that are shown!
