Sony Pixel Power calrec Sony

The Rogers return

20/04/2021

LS3/5A production resumes

Veteran UK speaker manufacturers Rogers have just restarted production of the legendary LS3/5A, alongside that of its bigger brother, the LS5/9 (pictured below). As well as making Classic models (built to the exacting specifications of the originals), both speakers will also be available in SE (Studio Edition) versions, which are fitted with Panzerholz (a hardwood/resin compound) baffles and upgraded crossovers, for the most demanding of studio applications .

The revival is being headed by Andy Whittle, who was Rogers Technical Director back in the 90s, when the company were still making the original LS3/5A. To find out what makes that speakers design so special (and why second-hand models are still so highly sought after), well let SOS speaker guru Phil Wards fascinating history lesson (originally published in SOS June 2016) do the talking...

History Of The LS3/5A

The LS3/5A originated in the mid-'70s, at a time when the BBC designed a fair proportion of their own broadcast and studio equipment. The whole idea of state-owned broadcasters designing and building their own kit is all but unthinkable now, but right up until relatively recently, if the BBC found themselves needing a specific tool that wasn't available commercially, their Kingswood Warren research labs were tasked to come up with the goods.

The genesis of the LS3/5A was not as straightforward, however, as the Kingswood Warren boffins simply being asked to design a compact monitor and dutifully delivering. Although there was a need at the BBC for a Grade II' compact monitor for use in outside broadcast trucks, the development of the speaker that became the LS3/5A didn't kick off in direct response to such a request. In fact the progenitor was a speaker designed for one-eighth-scale acoustic modelling of concert halls...

Long before virtual' computer-based acoustic modelling of performance spaces was possible, such work was done using literal modelling techniques. A physical scale model of the space would be built and miniature speakers and microphones placed appropriately within it to analyse its internal acoustic characteristics.

Now, there is no record (well, not in any document I've found) of who the engineer was to whom it first occurred that the acoustic modelling speaker used at Kingswood Warren actually sounded pretty good and might form the basis of a compact monitor. But whoever it was, I'd wager they had no idea at the time how significant a lightbulb moment they'd had.

In the early 1970s, when our story begins, speakers, whether for domestic or professional applications, were on the whole pretty big. Stereo hadn't really been around all that long, and neither had powerful transistor amplifiers, so a single, large speaker was still the norm. Now, even if it's on the large side, positioning one speaker is far easier than positioning a pair, as is required to create a stereo image, so the physical size of the speaker wasn't so much of an issue. With stereo, however, came the problem of speaker positioning, and with that not only came the need for speakers to be smaller, but also for pairs of speakers to be closely matched in terms of performance.

It hardly seems believable now, but back then, there were very few commercially available small speakers that would satisfy the BBC's needs. One of those few speakers that was available to the BBC was the original Goodmans Maxim, and a 1965 internal Kingswood Warren report describes its performance and assesses its potential. The report was written by Dudley Harwood, who went on to found Harbeth Audio (the company name being a conjunction of Harwood's name and that of his wife, Elizabeth). The Goodmans Maxim itself was designed by a young Laurie Fincham, who went on to become Technical Director of KEF, manufacturers of the drive units eventually used in the LS3/5A. There's none of that six degrees of separation' stuff in the British loudspeaker business; one or two degrees will usually suffice.

Harwood's Maxim report, which can be found at http://downloads.bbc.co.uk/rd/pu..., makes interesting reading (well, it does if, like me, you're irrationally interested in the history of speaker design). Even without converting the archaic imperial measurements of the test results, it's obvious that the Maxim, by today's standards, was inefficient, had restricted bandwidth at both ends of the spectrum, and displayed precious little power handling. However, those shortcomings weren't issues that Harwood expressed much concern over; in fact he was generally satisfied with the Maxim's performance. The issue that was of most concern to Harwood was sample consistency.

Along with the basic requirement for a small speaker that performed adequately for broadcast quality monitoring, the BBC needed the speaker to be consistent from sample to sample. If, say, a single speaker in an OB truck failed, it would be decidedly inconvenient if the pair had to be replaced, and equally unsatisfactory if the second pair didn't sound the same as the first. So each individual speaker was required to perform within response limits that, even today, are a challenge. If the Goodmans Maxim report revealed one thing, it was that this degree of consistency would not likely be found in an existing commercial speaker. So, with a concept on the table for a design inspired by the acoustic modelling speaker, the Kingswood Warren engineers turned to KEF Electronics for help.

KEF got the call partly because, now under Laurie Fincham's engineering leadership, the company were by some distance the most technologically advanced in the field, and partly because there was already an established relationship with the BBC. An earlier research project at Kingswood Warren into thermoplastic diaphrag
LINK: https://www.soundonsound.com/news/rogers-return...
See more stories from soundonsound

Most recent headlines

05/01/2027

Worlds first 802.15.4ab-UWB chip verified by Calterah and Rohde & Schwarz to be demoed at CES 2026

Worlds first 802.15.4ab-UWB chip verified by Calterah and Rohde & Schwarz to be ...

06/09/2026

Dolby and MagentaTV Bring Fans Closer to the FIFA World Cup 2026 in Germany with Dolby Vision and Dolby Atmos

June 9 2026, 23:00 (PDT) Dolby and MagentaTV Bring Fans Closer to the FIFA Worl...

04/08/2026

Dalet Announces Commercial Availability of Dalia, Bringing Media-Aware Agentic AI to Enterprise Productions

Dalet, a leading technology and service provider for media-rich organizations, t...

04/07/2026

Detective Conan: Fallen Angel of the Highway Opens in Dolby Cinemas Across Japan, Presented in Dolby Atmos and Dolby ...

April 7 2026, 19:00 (PDT) Detective Conan: Fallen Angel of the Highway Opens in...

23/06/2026

Case Study: YES Networks IP Transition Expands Production Possibilities and Redefines Workflows

When we began planning our transition from an SDI-based infrastructure to a new ...

23/06/2026

Imagine Communications Appoints Greg Garmon as SVP, Americas Video Sales

Imagine Communications has announced the appointment of Greg Garmon as Senior Vice President, Americas Video Sales. Garmon will oversee account growth and busin...

23/06/2026

Snap Promotes Emma Wakely to Head of Sports and Media Partnerships, Americas

Snap has promoted Emma Wakely to Head of Sports and Media Partnerships, Americas, succeeding Anmol Malhotra, who has been elevated to Global Head of Content and...

23/06/2026

YES Network and Gotham Sports App to Air MI New York Major League Cricket Matches

YES Network and The Gotham Sports App will air MI New York's Major League Cr...

23/06/2026

HAND Issues Persistent Digital IDs to 2026 NBA Draft Class

The Universal Talent Identifier (HAND) has issued HAND IDs to 34 top projected prospects in the 2026 NBA Draft class, including AJ Dybantsa, Cameron Boozer, and...

23/06/2026

World Boxing Launches World Boxing TV Streaming Platform

World Boxing has announced the launch of World Boxing TV, a subscription-based streaming platform built on the Joymo platform, offering live events, on-demand c...

23/06/2026

FloRacing to Stream 32 Off-Road Motorcycle Racing Events Including AMA Amateur National Motocross Championship

FloSports will stream 32 off-road motorcycle racing events on FloRacing, includi...

23/06/2026

SES Adds 14 Regional Channels and New Set-Top Boxes to ASTRA TV in Spain

SES has announced the expansion of its ASTRA TV platform in Spain with the addition of 14 regional channels in HD and UHD quality and the launch of new hybrid s...

23/06/2026

Appear Supports Rede Legislativas Contribution Workflow for Brazils TV 3.0 Trials

Appear ASA has announced its role in Rede Legislativa de R dio e TV's contri...

23/06/2026

PBS Selects LTN for Nationwide IP Video Network Across 330 Member Stations

LTN has announced that PBS has selected it as its IP video partner to modernize content distribution and contribution across more than 330 public television sta...

23/06/2026

Ease Live Powers Interactive Experience on Rally.TV for WRC

Ease Live has announced that its graphics overlay platform is powering an interactive fan experience on Rally.TV, the official streaming platform of the FIA Wor...

23/06/2026

Chyron LIVE Adds Haivision StreamHub Integration, SCTE-35 Ad Insertion, and Switcher Updates

Chyron has announced updates to Chyron LIVE, its cloud-native live production pl...

23/06/2026

ESPN Announces ESPN Fan House, Fan Engagement Hub Powered by Flowcode

ESPN has announced ESPN Fan House, a fan engagement hub powered by Flowcode, launching in August ahead of the 2026 college football season. Publicis Sports will...

23/06/2026

Sennheiser Relocates Americas Regional Hub to Nashville

The city's solid position in broadcast, entertainment, and sports attracted the major microphone manufacturer Sennheiser Group is moving its Americas Regio...

23/06/2026

Violet Audio's dMix 128 now shipping

128 channels of signal routing & DSP Announced just before the NAMM Show 2026, Violet Audio's latest digital audio matrix offers 128 channels of signal ...

23/06/2026

Minimal Audio launch Memory Rites

Latest Current expansion created by EPROM Minimal Audio have just launched the latest Current Expansion, Memory Rites. Designed in collaboration with renown...

23/06/2026

Undertone Audio's MPEQ-1 goes virtual

Popular hardware EQ gets official plug-in emulation Undertone Audio have just launched a new plug-in that brings one of their most popular hardware designs ...

23/06/2026

Colorfront Support for AWS CDI Unlocks New Potential for Cloud-Based Visual Effects and Content Creation

December 7, 2022 Colorfront (colorfront.com) - the multi-award-winning develope...

23/06/2026

Colorfront Delivers Even More AI Automation Power and Extends Technology Partnerships with Dolby, Apple

April 23, 2026 NAB 2026, Las Vegas - the Academy and Emmy Award-winning develop...

23/06/2026

IAB Tech Lab Releases SupplyChain v1.1

Share Copy link Facebook X Linkedin Bluesky Email...

23/06/2026

Besco to Represent PlayBox Neo in South Korea

PlayBox Neo appoints Besco as Channel Reseller to establish a firm foothold in Asia Pacific's thriving high-tech export-driven economic boom PlayBox Neo, t...

23/06/2026

PBS Selects LTN to Power Nationwide IP Video Network

Share Copy link Facebook X Linkedin Bluesky Email...

23/06/2026

PBS selects LTN for nationwide IP video network

LTN, a global leader in IP-based video transport and network services, today announced that PBS has selected LTN as its IP video partner to modernize and future...

23/06/2026

The LiveU Q Era Arrives in ANZ with the LU900Q at ABE2026

LiveU will introduce its Q Era to Australia and New Zealand for the first time at ABE2026 on Stand No. 25, (July 30 31). Leading the showcase is the LU900Q, a n...

23/06/2026

Miri Technologies Ships V410 Live 4K Video Encoder-Decode...

Miri Technologies Inc. has begun shipping its highly anticipated V410 live 4K video encoder/decoder for streaming, IP-based production workflows and AV-over-IP ...

23/06/2026

DHD SX2 and TX2 Consoles Go On-Air at Radio Tzafon

DHD audio reports the completion of an upgrade to the audio production facilities at the Galilee headquarters of Radio Tzafon. The station broadcasts two progra...

23/06/2026

Nagravision Launches Nagra Venturi Security Offering

Share Copy link Facebook X Linkedin Bluesky Email...

23/06/2026

ITN Expands Programmatic Local TV Platform

Share Copy link Facebook X Linkedin Bluesky Email...

23/06/2026

Warner Bros. Discovery Taps AWS for New AI-Powered Ad Tech

Share Copy link Facebook X Linkedin Bluesky Email...

23/06/2026

Study: Younger Viewers More Distracted But More Receptive to Ads

Share Copy link Facebook X Linkedin Bluesky Email...

23/06/2026

Chilevisin, ClaroVTR Tap Pixop for 4K FIFA World Cup Feed

Share Copy link Facebook X Linkedin Bluesky Email...

23/06/2026

Imagine Communications Names Greg Garmon as Senior Vice P...

Multifaceted Growth Executive Brings 20+ Years of Experience Leading Organizations Across Tech and M&E Imagine Communications today announced the appointment ...

23/06/2026

Australians in Film and Screen Australia's talent development initiative UNTAPPED returns for 2026

Australians in Film and Screen Australia's talent development initiative UNT...

23/06/2026

Visual Productions Unveils RdmRelay2 Four-channel Relay Control at InfoComm 2026

Visual Productions Unveils RdmRelay2 Four-channel Relay Control at InfoComm 2026 Brie Clayton June 22, 2026 0 Comments New Relay Solution Combines DMX, ...

23/06/2026

SMPTE Makes Its Standards Freely Accessible, Opening Standards Library to the Global Media Technology Community

SMPTE Makes Its Standards Freely Accessible, Opening Standards Library to the Gl...

23/06/2026

UKTV and BBC Entertainment join forces on first joint comedy entertainment co-commission

23rd June 2026, London: UKTV and BBC Entertainment have unveiled a joint co-comm...

23/06/2026

Gugu Mbatha-Raw leads Sky Original supernatural thriller Possession in first teaser

Also starring Jonny Lee Miller, Sheldon Shepherd and Bel Powley, the ambitious f...

23/06/2026

Arqiva response to DCMS Green Paper

The priority now is a clear and credible plan June 23, 2026, Winchester, UK - Arqiva, the UK's leading communications infrastructure provider, welcomes tod...

23/06/2026

RT AND COMMUNITY FOUNDATION IRELAND ANNOUNCE RT TOY SHOW APPEAL GRANT AWARDS 2026

The RT Toy Show Appeal has raised over 31 million since its inception in 2020 ...

23/06/2026

NVIDIA Powers Over 400 of the World's 500 Fastest Supercomputers

News Highlights: NVIDIA technology runs 81% of the TOP500 and 90% of the systems new to the list. 26 systems on the TOP500 adopted the NVIDIA Grace CPU, up ei...

23/06/2026

How Businesses Are Building Specialized AI They Can Trust

Companies are asking how to build specialized AI that fits with the way their workflows actually run. The first wave of enterprise AI was about access. Compan...

23/06/2026

June 22, 2026

Newly identified molecule strengthens the eye's response to damage in retinal disease Scripps Research discovery finds that restoring the naturally occurrin...

22/06/2026

Behind the Mic: SportsCenters Lisa Cohn to Retire This June From ESPN as Longest-Tenured Anchor

Behind The Mic provides a roundup of recent news regarding on-air talent, includ...

22/06/2026

Cosm Appoints David Ho as Chief Legal Officer

Cosm has announced the appointment of David Ho as Chief Legal Officer, a newly created executive role reporting to President and CEO Jeb Terry. Ho will oversee ...

22/06/2026

Warner Bros. Discovery and AWS Announce AI-Powered Advertising Technology Platform

Warner Bros. Discovery and Amazon Web Services (AWS) have announced the developm...

22/06/2026

Daktronics Completes Audio Control System Upgrade at Petco Park for San Diego Padres

Daktronics has completed an audio control system upgrade at Petco Park in San Di...