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Emperor II NL-4

Emperor II NL-4; Pentron Corporation; (ID = 1304092) R-Player Emperor II NL-4; Pentron Corporation; (ID = 654120) R-Player
Emperor II NL-4; Pentron Corporation; (ID = 1304093) R-Player
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Emperor II NL-4; Pentron Corporation; (ID = 1304092) R-Player
Pentron Corporation;: Emperor II NL-4 [R-Player] ID = 1304092 900x770
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For model Emperor II NL-4, Pentron Corporation; Chicago (IL):
1958 Pentron color catalog
Country:  United States of America (USA)
Manufacturer / Brand:  Pentron Corporation; Chicago (IL)
Year: 1959 ? Category: Sound/Video Recorder and/or Player
Valves / Tubes 16: 12AX7 12AX7 12AX7 12AX7 12AU7 12AU7 6AN8 6AN8 6AQ5 6AQ5 6AQ5 6AQ5 5Y3 6X5 EM84 EM84
Main principle Audio-Amplification
Wave bands - without
Details Tape Recorder
Power type and voltage Alternating Current supply (AC) / 117 Volt
Loudspeaker 6 Loudspeakers
Power out 20 W (unknown quality)
from Model: Emperor II NL-4 - Pentron Corporation; Chicago
Material Wooden case
Shape Tablemodel, with any shape - general.
Dimensions (WHD) 17.1 x 17.1 x 10.8 inch / 434 x 434 x 274 mm
Notes Very rare top-of-the-line stereo tape recorder. Limited production did not get a Sams schematic, unlike NL-1, NL-2, NL-3, which are in Sams schematic. 2 speeds. 40-15000cps response at 7.5ips, 40-7500cps at 3.75ips. SNR=60dB, 4pole induction motor. Auto shut-off. 2 mikes. 15ft wired remote RC-6 with volume and balance. Two portable speaker cases as model ES-2 with 6"woofer, 6"midrange and 2"tweeter in each baffle.
Net weight (2.2 lb = 1 kg) 45 lb (45 lb 0 oz) / 20.430 kg
Price in first year of sale 410.00 $
Literature/Schematics (1) 1959 Radio Shack Catalog page 48

Model page created by Joe Sousa. See "Data change" for further contributors.

All listed radios etc. from Pentron Corporation; Chicago (IL)
Here you find 61 models, 48 with images and 43 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.


Forum contributions about this model
Pentron Corporation;: Emperor II NL-4
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pentron: NL-4; Emperor II
Joe Sousa

Hello Radiophiles,

The following is a scan of my personal copy of page 48 from the 1959 Radio Shack Catalog. This page shows a range of Pentron tape recorders, and was apparently the last year that Radio Shack sold Pentron. The 1960 Radio Shack catalog has no Pentron products.

Check This is one of best archival web sites on the web.

I inherited the NL-4 at the bottom of the page, and I have done some restoration to it. However, this unit was badly compromised when it was incompetently converted from 117VAC/60Hz operation to 220VAC/50Hz operation. The 6.3V filaments on the second channel amplifier run around 7V, and the main pulled on the motor was turned very poorly and has a severe wobble. I bought an Aristocrat NL-2, which I will use for parts. A long term project. My father bought it slightly used shortly after I was born in 1959.

I don't have a schematic diagram, so I will use the Sams schematic for the NL-3 as a guide. Sams did not make a schematic for this very low volume model.



Pentron Corporation;: Emperor II NL-4
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