Tannoy GRF Memory (1982–1987)

At 62 kilograms and nearly a meter tall, these wooden monoliths fill a room and then some.

Overview

The Tannoy GRF Memory is a full-scale reissue of a G.R. Fountain design, brought back in the early 1980s as a direct descendant of Tannoy's most revered engineering lineage. It was marketed as a "fantastic recreation" of the original concept. It arrived in 1982 with a mission: uncompromised point-source coherence through the brand's signature Dual Concentric driver architecture. It stands 1100mm tall with a broad 800mm footprint, so these passive loudspeakers are physically imposing. The wooden cabinet houses a single 15" Dual Concentric driver, technically a 38cm coaxial cone unit designated 3839M, and that one driver handles all audio bands. Unlike the back-loaded horn designs seen in some contemporaries, the GRF Memory uses a sealed cabinet with quadruple ducted ports. That is a rare configuration, aimed at deep, controlled bass extension without flabby resonance.

Owners report a speaker that ignores its era's trends. It has a minimal crossover network built with high-quality components to preserve signal integrity. The crossover operates at 1kHz with a 12dB/octave slope. It also has a control network with five selectable positions for adjusting output between 1kHz and 20kHz (±6dB/oct), plus a secondary trim from 5kHz to 20kHz ranging from +3dB to -6dB. That much tonal shaping was uncommon on production speakers at the time, which suggests Tannoy was aiming at a discerning, possibly professional, audience. Sensitivity is reportedly 95 dB. That makes it a good match for low-powered valve amplifiers, though it performs equally well with high-current solid-state designs.

Despite their mass and complexity, the GRF Memory speakers were never marketed as mere showpieces. They earned the Stereo Sound 'State-of-the-Art' award, a rare honor that cemented their reputation in high-end audio circles. Collectors note that the original run lasted until 1987, but the model's influence extended well into the 1990s, and some claim it "dominated the world" in high-fidelity listening rooms during that period. Variants such as the GRF Memory HE, TW, and (RW) appeared over time, which points to ongoing demand and subtle refinements. The core design principles stayed the same.

Specifications

Manufacturer	Tannoy
Product type	Loudspeaker, Passive, Floorstanding
Production years	1982–1987
Driver	15" Dual Concentric Drivers
Unit used	For all bands: 38cm coaxial cone type (3839M)
Port design	quadruple ducted ports
Frequency Response	29Hz - 20kHz ± 3dB
Sensitivity	95 dB
Minimum Impedance	5.5 Ohm
Crossover frequency	1kHz, 12dB/octave
Control network	1kHz to 20kHz (±6dB/oct, 5 positions); 5kHz to 20kHz (+3dB to -6dB)
Dimensions	1100 x 800 x 480mm
Weight	62 kg

Key Features

15" Dual Concentric Driver (3839M)

The GRF Memory is built around the 38cm coaxial cone unit, model 3839M. It is a true Dual Concentric driver, with the high-frequency compression driver mounted directly behind the center of the 15" bass cone. This puts the wavefronts in time alignment from a single point source, a hallmark of Tannoy's design philosophy. Multi-driver arrays can suffer from phase misalignment. The GRF Memory delivers a coherent soundstage with precise imaging, even off-axis. The one driver handles the full frequency range, so there is no need for complex multi-way crossovers that can color the sound.

Quadruple Ducted Ports

The bass reflex system uses four distinct ducted ports, which sets the GRF Memory apart from typical ported cabinets. The ports are engineered to reduce turbulence and port noise, so the speaker can reach deep bass down to 29Hz without chuffing or distortion. The multi-port layout also helps manage internal pressure and damping, giving tighter, more articulate low-end response than might be expected from a speaker of this era.

Minimal Crossover with Adjustable Control Network

Despite being a two-way system in function, the crossover is remarkably simple, operating at 1kHz with a 12dB/octave slope. What sets it apart is the inclusion of a user-adjustable control network. With five selectable positions affecting the 1kHz–20kHz range and a secondary trim for 5kHz–20kHz, listeners can tailor the speaker’s tonal balance to room acoustics or personal preference. This level of fine-tuning was rare in production speakers and reflects Tannoy’s intent to deliver a reference-grade tool rather than a one-size-fits-all consumer product.

Wooden Cabinet with Non-Horn Loading

Some assume the GRF Memory cabinet is a back-loaded horn, like Tannoy's horn-loaded models. It is not. It is a large, sealed wooden enclosure that supports the Dual Concentric driver while minimizing internal reflections. The cabinet's size and weight, 62kg per pair according to most sources, add mechanical stability, reduce cabinet resonance and improve low-frequency control.

Historical Context

Produced from 1982 to 1987, the GRF Memory came out during a golden period for British high-fidelity engineering. It was positioned as a flagship model, following the Westminster and Arden in the lineage, and it sits under the "Legendary Products" banner in the VTA Brand Index. The design follows the original work of G.R. Fountain, a key figure in Tannoy's development of point-source monitoring systems. Reception was immediate and enthusiastic: it won the Stereo Sound 'State-of-the-Art' award for its performance in critical listening environments. Some accounts suggest it remained a dominant force in audiophile circles well into the 1990s, with enthusiasts calling it one of the best Tannoy speakers ever made.

Collectibility & Value

The GRF Memory gets serious attention in the vintage audio market. An asking price of $8,500 was listed in 2014, and a 2024 listing in South Korea asked 3,500,000 won (approximately $2,600 USD at the time), though the latter may reflect regional or condition-based variables. No verified recent sale prices are available, and original MSRP remains undocumented. Spare parts, particularly the 3839M driver and crossover components, are scarce, so fully operational units are highly desirable. There is no documented data on common failures or maintenance requirements, but given the age and complexity, owners are advised to inspect foam surrounds and internal wiring for degradation.