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 ...

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...

01/06/2026

Dolby Sets the New Standard for Premium Entertainment at CES 2026

January 6 2026, 05:30 (PST) Dolby Sets the New Standard for Premium Entertainment at CES 2026 Throughout the week, Dolby brings to life the latest innovatio...

12/05/2026

G&D and CT Square Launch New Joint Venture in India

Share Copy link Facebook X Linkedin Bluesky Email...

12/05/2026

Congress Urged to Protect Live Sports on Broadcast TV

Share Copy link Facebook X Linkedin Bluesky Email...

12/05/2026

Roku to Stream Inaugural Enhanced Games in North America

Share Copy link Facebook X Linkedin Bluesky Email...

12/05/2026

Austrian Broadcaster Selects Lawo, SLG Broadcast for Studio Upgrade

Share Copy link Facebook X Linkedin Bluesky Email...

12/05/2026

NUGEN Audio Debuts Enhanced DialogCheck at MPTS 2026

NUGEN Audio will debut Version 1.1 of DialogCheck, its intelligent dialog intelligibility and compliance tool, at the 2026 Media Production & Technology Show (S...

12/05/2026

Disguise Powers Interactive LED Castle for Laura Pausini

The reactive visuals can adapt to any stage or screen setup and comprise 50 layers of Notch content Today, Disguise announced that its high performance GX 3 m...

12/05/2026

DoPchoice Intros Light-Shaping Accessories for ARRI Omnib...

Snapgrid , Snapbag & Airglow Expand Creative Control for the ARRI Modular LED BarFollowing the launch of the ARRI Omnibar, DoPchoice introduces a dedicated li...

11/05/2026

Ross Production Services 48-Foot HyperMax-1 Truck Quickly in Demand

New production unit features not only wealth of Ross gear but also Sony cameras, Canon lenses, and a Calrec Argo S audio board...

11/05/2026

Solid State Logic Launches TCA Tour Portable Audio Production System

Solid State Logic (SSL) has announced TCA Tour, a portable fly-away audio production system built from System T components for broadcast, touring, and live prod...

11/05/2026

Riedel Communications Named Official Connectivity Integration Provider for Glasgow 2026 Commonwealth Games

Riedel Communications has announced it will serve as Official Connectivity Integ...

11/05/2026

G&D and NETGEAR AV Launch KVM-over-IP Plugin for Automated Network Configuration

Guntermann and Drunck (G&D) and NETGEAR AV have announced a plugin that automates network configuration for G&D KVM-over-IP deployments on NETGEAR AV Line infra...

11/05/2026

The Famous Group and Elite Edge Announce Unified Ownership

The Famous Group (TFG) and Elite Edge, a production studio specializing in live-action production, show opens, set design, and fabrication for sports and live e...

11/05/2026

SVG All-Stars: Odair Auger, Tech Project Manager, NBCUniversal Telemundo Enterprises

The native of S o Paulo, Brazil, will play a crucial role in the broadcaster'...

11/05/2026

Cobalt Digital to Showcase IPMX/ST 2110 Ecosystem at BroadcastAsia 2026

Cobalt Digital will exhibit its IPMX/ST 2110 product lineup at BroadcastAsia 2026 (Stand 5D2-4), anchored by the COBALT blueCORE family of standalone signal pro...

11/05/2026

Interra Systems to Demonstrate QC, Monitoring, and Captioning Solutions at BroadcastAsia 2026

Interra Systems will exhibit at BroadcastAsia 2026 (Stand 5C1-10), demonstrating...

11/05/2026

T-Mobile Deploys 5G and AI Tools Across 2026 PGA Championship

T-Mobile is serving as a technology partner for the 2026 PGA Championship at Aronimink Golf Club in Newtown Square, Pennsylvania, deploying 5G connectivity and ...

11/05/2026

Vizrt Named Official Technical Supplier of Eurovision Song Contest 2026

Vizrt has announced it has been named an Official Technical Supplier of the Eurovision Song Contest 2026, in partnership with host broadcaster ORF. The 70th edi...

11/05/2026

WNBA and AWS Announce Multi-Year Partnership

The WNBA and Amazon Web Services (AWS) have announced a multi-year partnership making AWS the Official Cloud and Cloud AI Partner of the WNBA. AWS is also joini...

11/05/2026

NAB 2026: kronehit Awards Lawo and SLG Broadcast Contract for Full Studio Modernization

Austrian private broadcaster kronehit publicly awarded SLG Broadcast AG and Lawo...

11/05/2026

Behind The Mic: PGA Championship Changing Weekday Announcer Lineup for 2026 Tournament

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

11/05/2026

Eurovision at 70: The Biggest Hits, Artists, and Trends From the Iconic Song Competition

As Eurovision fans gear up to celebrate the 70th anniversary of the iconic song ...

11/05/2026

Pelo Spotify, artistas brasileiros geraram aproximadamente R$ 2 bilhes em royalties em 2025

Pela primeira vez na hist ria, o Brasil figura entre os oito maiores mercados de...

11/05/2026

Bastl Instruments showcase the Kalimba

New desktop instrument focused on tactile performance Bastl Instruments have announced the Kalimba, a new desktop instrument that combines physical modellin...

11/05/2026

1010music release the blackbox 2

Compact sampling workstation gains new features 1010music have announced the blackbox 2, a new version of their compact standalone sampler designed for DAWl...

11/05/2026

KOMA Elektronik Monoplex Eurorack sequencer

Performance-focused sequencer with microtonal control Berlin-based KOMA Elektronik have announced Monoplex, a new 42HP Eurorack sequencer designed for hands...

11/05/2026

IK Multimedia launch the Tonex One+

Boasts wireless control from mobile devices The latest iteration of IK Multimedia's compact amp and effects modelling pedal expands on the capabilities ...

11/05/2026

Transfigured Orchestra Vol 3: Cinema Brass from Sonora Cinematic

Spans traditional orchestral and experimental sounds Sonora Cinematic have recently released the third instalment in their Transfigured Orchestra series, de...

11/05/2026

SUPERBOOTH 2026 Video Show Reports

Our exhibition coverage Watch all our SUPERBOOTH 2026 video coverage in one place. Check back to this page regularly as we will be updating with more video ...

11/05/2026

You're not meant to look at an Eclipse, but you won't be able to take your eyes off Delta's Eurovision staging

You're not meant to look at an Eclipse, but you won't be able to take yo...

11/05/2026

L3Harris Reaches Over 50% in FAA Telecommunications Modernization

L3Harris has completed more than 50% of a nationwide effort to rebuild the invisible backbone of America's airspace....

11/05/2026

aconnic presents at Equity Forum German Spring Conference 2026, Frankfurt to engage with investors and analysts

aconnic AG (ISIN: DE000A0LBKW6), Munich, is participating in the Equity Forum Ge...

11/05/2026

CBS Sacramento Debuts New AR/VR Studio

Share Copy link Facebook X Linkedin Bluesky Email...

11/05/2026

Gray Media Advances James Fitch to Senior VP, News Services

Share Copy link Facebook X Linkedin Bluesky Email...

11/05/2026

Smarter Monetization Stronger Retention and PurposeDriven...

As Asia Pacific's streaming market continues to evolve, operators across the region are rebalancing their strategies and shifting their focus from subscribe...

11/05/2026

QuickLink to Highlight Latest StudioEdge Models StudioPr...

LONDON, MAY 11, 2026 QuickLink, a leading provider of award-winning video production and remote guest contribution solutions, will showcase its latest innovat...

11/05/2026

Cobalt Digitals BroadcastAsia Line up Highlights Flexible...

Cobalt Digital's BroadcastAsia Line-up Highlights Flexible End-to-End IPMX/ST 2110 Ecosystem Award-winning blueCORE standalone signal processors at the he...

11/05/2026

Encompass and VideoMagic Launch Altitude Intelligence to...

Encompass Digital Media, in partnership with VideoMagic International, announced at NAB 2026 the launch of Altitude Intelligence, an AI-powered platform designe...

11/05/2026

Louis Libin Preps for the World Cup's Spectrum Crunch

Share Copy link Facebook X Linkedin Bluesky Email...

11/05/2026

Report: Broadcast Employment Hard Hit by AI

Share Copy link Facebook X Linkedin Bluesky Email...

11/05/2026

Alfalite installs 150 LED panels in Torre Iberdrola audit...

Alfalite, the only European manufacturer of LED screens, has completed a major new corporate installation in Spain with the upgrade of the auditorium at Torre I...

11/05/2026

VEON Shareholders Re-elect Board and Chairman, Reaffirming Confidence in Digital Growth Strategy

11 May 2026 VEON Shareholders Re-elect Board and Chairman, Reaffirming Confiden...

11/05/2026

Fox Corporation Reports Third Quarter Fiscal 2026 Financial Results

Fox Corporation Reports Third Quarter Fiscal 2026 Financial Results NEW YORK, NY, May 11, 2026 - Fox Corporation (Nasdaq: FOXA, FOX; FOX or the Company ) t...

11/05/2026

Arvato Systems becomes a member of InsurLab Germany

Arvato Systems Becomes a Member of InsurLab Germany Collaboration in the insurance industrys leading innovation network G tersloh - Arvato Systems has joine...

11/05/2026

A Predator in Plain Sight: New true-crime podcast reveals definitive story of pirate radio DJ and abuser Eamon Cooke

Pirate Predator uncovers new information from victims and survivors of abuse on ...

10/05/2026

Berklee Honors Jacob Collier, Jill Scott, and Vinnie Colaiuta at 2026 Commencement

Berklee Honors Jacob Collier, Jill Scott, and Vinnie Colaiuta at 2026 Commenceme...

10/05/2026

RT ALL-IRELAND DRAMA FESTIVAL WINNERS ANNOUNCED

RT ALL-IRELAND DRAMA FESTIVAL WINNERS ANNOUNCED DURING GALA AWARDS STREAMED LIVE ON RTE.IE/CULTURE Kilmeen Drama Group hailing from Rossmore, Co. Cork Scoops ...