WM-D3

Sony WM-D3 feature
WML ID #33
Manufacturer
Sony
Model
WM-D3
Series
DD Professional
Year
1985
Made in
Japan
Technical details, specifications
Battery
2AA
Battery life
7 h
Colors
black
Dimensions
125.4*37.3*82.3 mm (385 cm³)3D size
Weight
370 gr
Window
yes
Frame
plastic
Case
metal
Carry
case
Expandable
no
External compartment
no
Head
Amorphous
Drive
Disc drive capstan servo
Tape selector
Manual switch
Waterproof
no
Speaker
no
Frequency range
40-16000@1 Hz
FMax output
2x20 mW
Functions
DC in
yes
Record by input
yes
Record by int mic
no
Hotline mode
no
Cue
yes
Balance (L/R)
no
Phone type
3
Equalizer
no
Auto volume no
Auto reverse
no
Anti rolling
yes
AMS no
Blank skip no
Logic control
no
Hold lock
no
Noise reduction
Dolby B NR
Radio
no
Remote control
no
Wireless headphone
no
Indicator
led
Description

The smaller Walkman Professional recorders, a DDII with additional components for recording borrowed from the WM-D6C.

The WM-D3 was the smaller of the two Walkman Professional recording models, the other being the WM-D6/WM-D6C. It was based around the same mechanicals as the WM-DD, and so had the same familiar layout of controls. An unfamiliar addition though was the pause control, which had a sliding action. This worked by switching off the motor, so introduced no extra mechanical complexity. The extra bulk of the high quality recording circuits made the WM-D3 slightly larger than the other WM-2 derivatives, with the recording preamplifiers being housed in an extra section of casing at one end. Unlike most of these models, the tape transport keys were part of the outer casework. For convenient desktop use, rubber feet were fitted to the four corners of the cassette door so that the machine could be placed “upside down” and operated without the need for a second hand to hold it steady. All the text and symbols were printed to be the correct way up when the machine was used this way.

What elevated the WM-D3 into the Professional range, above the level of the WM-R202 and others, was its ability to make recordings using Dolby NR and using either normal or chrome tape. Usually recording Walkmans could make basic recordings on ferric tape only, despite having playback facilities for a full range of recordings. Recording on chrome tape requires a lot more power than can be used of normal types, for both bias and erase. Because of this, the WM-D3 used a complex AC bias circuit and a double-gap ferrite erase head, the latter as an alternative to the hinged permanent magnet usually found on simpler Sony recorders. The WM-D3 was not quite as versatile as the WM-D6/WM-D6C, for it could not record on metal tape, nor did it offer Dolby C NR. Also absent when compared to these larger, more expensive models was the quartz locked capstan servo and variable playback speed control.

The WM-D3 offered a range of connections for external equipment, including line out, line in/microphone (switched by an attenuator) with plug-in power, stereo headphones and external 3V supply. The line out socket worked for playback only, so the WM-D3 could not be used in a “tape loop” with a hi-fi amplifier, as would be possible with a full size tape deck. A small stereo microphone was included with each machine. Recording level control was manual only, and to aid accurate adjustment a five segment LED level indicator was fitted, just like that of the larger professional models. This could also be set to show battery strength (using all five segments, an improvement over the arrangement fitted to the WM-D6) or switched off completely to conserve battery power.

The WM-D3 completed the Sony range of professional cassette models nicely, and was well respected for offering true hi-fi performance in the smallest possible size.Via Walkman Central

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Additional notes
Analog tape counter, 5 LED VU meter or battery status
Created
2021-07-10 18:46:34
Updated
2024-05-24 04:15:28
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Comments
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emiel80s @ 2024-04-05 19:33:56

It uses the same motor as the D6 and D6C, and that drives a disc like the other Disc Driven units.

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aoszmdnj @ 2024-01-05 03:47:06

oh why is this considered dd walkman as well?

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befresh @ 2022-12-28 09:12:43

This is also a DD walkman, maybe add it to that category as well?

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