Sony APM-22ESAV

At 16 kg and nearly half a meter tall, these bookshelf speakers were built to disappear magnetically — but not sonically.

Overview

The Sony APM-22ESAV isn't what most picture when they think of 1980s bookshelf speakers — it’s heavier, wider, and more technically ambitious than the norm. Marketed as an anti-magnetic, AV-compatible system, this speaker was designed for serious placement near televisions without wreaking havoc on CRT displays, a real concern in the era of bulky home entertainment setups. Priced at ¥45,000 per unit around 1986, it occupied a premium tier, suggesting Sony intended it for discerning listeners who wanted both fidelity and functionality. While often referred to simply as the APM-22 or APM-22ES in collector circles, the full model name APM-22ESAV reflects its specific AV-tuned variant, likely an evolution of the earlier APM-22ES. It belongs to Sony’s APM series, a line known for advanced driver technology and clean, functional aesthetics.

Despite its bookshelf classification, the APM-22ESAV measures 290 mm wide by 515 mm high — closer in stature to a compact floorstander than a true shelf unit. Its 16 kg weight hints at dense internal bracing and substantial drivers, supported by the fact it uses a 2-way bass reflex design with a ported enclosure to enhance low-end extension. The speaker’s construction centers on Sony’s proprietary APM-type transducers, which deviate from conventional cone designs in favor of planar technology.

Specifications

Manufacturer	Sony
Product type	Speaker system, 2-way, 2-speaker, bass reflex system, Bookshelf Type, Anti-magnetic Type
Original price	¥45,000 per unit (approx. 1986)
Playback frequency band	38 Hz - 30,000 Hz
Output sound pressure level	91 dB/W/m
Impedance	6 Ω
Maximum instantaneous input level	120W
Rated input level	60W
Crossover frequency	1.3 kHz
External dimensions	290 mm (W) x 515 mm (H) x 320 mm (D)
Weight	16 kg
Low frequency unit	290 cm² Plane type
High frequency unit	16 cm² Plane type

Key Features

APM-Type Plane Driver with Aluminum Honeycomb Vibration Plate

The APM-22ESAV relies on Sony’s proprietary plane-type drivers for both low and high frequencies, a departure from the paper cones common in most speakers of the era. The 290 cm² woofer uses an aluminum honeycomb vibrating plate driven at multiple points by four armatures directly connected to the voice coil. This multi-drive system aims to distribute force evenly across the diaphragm, reducing distortion and improving transient response. The tweeter, with its 16 cm² plane diaphragm and large voice coil, follows a similar design philosophy, promising extended high-frequency output up to 30 kHz. These materials and driver architectures were cutting-edge for consumer audio in the mid-1980s and reflect Sony’s engineering confidence.

Anti-Magnetic Shielding for TV Compatibility

Engineered as an anti-magnetic type, the APM-22ESAV was designed to sit close to CRT televisions without distorting the picture — a practical necessity in the age of integrated living room AV systems. This shielding ensures safe placement near televisions. This feature underscores the speaker’s role not just as a hi-fi component, but as part of a broader home theater ecosystem, even before the term “home theater” became commonplace.

2-Position AV Equalizer (AV/Pass)

The inclusion of a 2-position AV equalizer switch — toggling between AV and Pass modes — suggests Sony anticipated varied usage scenarios. This dual-mode functionality was forward-thinking, acknowledging that the same speaker might be used for both movies and stereo audio.

Acoustic Rounded Enclosure Design

The cabinet features an acoustic rounded design with R-shaped corners, a subtle but deliberate choice to reduce edge diffraction. Sharp cabinet edges can cause sound wave scattering, leading to phase anomalies and smeared imaging. By rounding the corners, Sony aimed to create a smoother off-axis response and more coherent soundstage. This attention to diffraction control was more commonly seen in high-end monitors than in consumer bookshelf models, marking the APM-22ESAV as a technically refined product.

2-Way Bass Reflex System with 1.3 kHz Crossover

The speaker employs a 2-way configuration with a passive crossover set at 1.3 kHz. The bass reflex port helps extend low-frequency output down to 38 Hz, impressive for a speaker of its size. Combined with a rated 60W continuous and 120W peak power handling, the system was built to deliver dynamic, room-filling sound without strain.

Collectibility & Value

Collectibility appears moderate, driven more by nostalgia and technical curiosity than high demand. While not rare, functional pairs in good condition may require servicing before optimal performance.