Sony KX-21HV1

Sony KX-21HV1

CRT › Presentation monitor

Overview

Brand

Sony

Model

KX-21HV1

Variants

S

Series

Profeel Pro

Released

1986

MSRP

¥185,000

Type

Presentation monitor

Screen size

21″

Aspect ratio

4:3

TVL

560

Remote

RM-543

ECID

EC3007

Power

Voltage

100–120V

Frequency

50Hz,60Hz

TV Systems

AV system

NTSC

Inputs

Rear

RGB21
1×RGBS (JP21, Stereo audio via Integrated)

TTC-003 compliant analog RGB connector. Directly accepts RGB from MSX computers and other Japanese sources. Requires adapter for European SCART sources due to different pinout.

Digital RGB
1×TTL RGB (EIAJ-8)

8-pin rectangular connector for TTL-level digital RGB with separate H-sync and V-sync (active low). Used for connection to computers with TTL RGB output.

Video 2/3/4
3×Composite (CVBS) (RCA (connector), Stereo audio via RCA (connector))

Video 1
1×Composite (CVBS) (8-pin DIN 45326, Stereo audio via Integrated)

8-pin DIN multi-input carrying composite video, stereo audio, and Control S signals.

Outputs

Rear

Speaker
2×Analog stereo (Binding post)

8-16Ω impedance speaker terminals. 15W + 15W output (EIAJ 8Ω).

Monitor Out
1×Composite (CVBS) (RCA (connector))

Audio Out
1×Analog stereo (RCA (connector))

Fixed/variable level output with switch. 408mVrms at 5kΩ impedance.

Accessories

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Parts

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Documents

• User manual

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Archival Links

Database

MSX Wiki

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Photos

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{{#subobject:

|Has CRT model=Sony KX-21HV1 |Has control signal format=Control S |Has control port connector=3.5mm TRS |Has control port direction=Input |Has control port count=1 |Has control port label=Control S In |Has control port location=rear

|Has control port notes=5Vp-p control signal input for system integration with compatible Sony equipment.}

{{#subobject:

|Has CRT model=Sony KX-21HV1 |Has control signal format=Control S |Has control port connector=3.5mm TRS |Has control port direction=Output |Has control port count=1 |Has control port label=Control S Out |Has control port location=rear

|Has control port notes=5Vp-p control signal output for chaining to other Sony components.}

The Sony KX-21HV1 is a professional 21-inch presentation monitor manufactured and released by Sony in August 1986 as part of the Profeel Pro series. It uses Sony's Black Trinitron system to provide a high-quality display with 560 lines of horizontal resolution.

Overview

The KX-21HV1 is the smaller sibling of the KX-27HV1, sharing the same Profeel Pro design language and feature set in a more compact 21-inch form factor. Like its larger counterpart, it was nicknamed "Yagura TV" (やぐらテレビ, "tower TV") internally during development due to its distinctive angular frame design that allowed units to be stacked at events and exhibitions.

The monitor features an extensive array of connectors including an EIAJ-8 Digital RGB input for TTL-level signals, a JP21 connector for analog RGB (TTC-003 compliant), an 8-pin DIN 45326 multi-input, and three additional composite video inputs. For system integration, the monitor includes Control S input and output jacks (3.5mm mini-jack, 5Vp-p) allowing remote control of compatible Sony equipment. The included remote control (RM-543) is shared with the KX-27HV1.

Variants

• KX-21HV1 - Base model with standard audio connections (¥185,000)
• KX-21HV1S - Variant with S-Video (Y/C) input replacing two RCA audio connectors (¥188,000)

Related Models

The KX-21HV1 is part of the Profeel Pro lineup:

• Sony KX-27HV1 - 27-inch version (¥275,000 / ¥278,000 for S variant)

The series was succeeded by the HV2 series in 1989 (KX-27HV2, KX-34HV2) which added native S-Video support to all models.

Accessories

The monitor was designed to work with Sony's VT-X5R television tuner unit, which could be connected via a single Multi-Connector cable that carried both video and control signals. The smaller size made the KX-21HV1 popular with MSX computer users and home video enthusiasts who wanted professional-grade picture quality in a desktop form factor.

Included accessories:

• Remote commander RM-543
• Connection cord (video, RCA to RCA, 1.5m)
• User manual
• Usage notes
• Warranty card
• Service center information
• Circuit diagram