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The Acoustic Energy AE320mk2 is a refined floorstanding loudspeaker offering strong clarity, controlled low-end performance and an engaging, open soundstage, making it a highly capable choice for modern hi-fi systems.
A confident, well-balanced loudspeaker that combines scale, refinement and engaging musicality.
Tannoyista Rating
★★★★☆ (4.0 / 5)
Date Published
26th May 2026
Reviewed by Josie Willow-Hecate Lewis for Tannoyista
Independent editorial listening evaluation and performance analysis.
The Acoustic Energy AE509 is a 2.5-way floorstanding loudspeaker offering excellent transparency, controlled bass and superb stereo imaging, making it a refined choice for high-quality two-channel music systems.
An exceptionally balanced loudspeaker combining precision, refinement and musical engagement with impressive value.
Tannoyista Rating
★★★★☆ (4.5 / 5)
Reviewed by Josie Willow-Hecate Lewis for Tannoyista • 5 June 2025
Independent editorial review based on real-world listening evaluation.
The Trident Studios Lockwood Major monitors are iconic pieces of British audio history, used to mix legendary albums by iconic artists including The Beatles, David Bowie, and The Rolling Stones.
Product Name: The ORIGINAL Trident Studios Lockwood Major Monitoring Loudspeakers
Type: Vintage Studio Mastering Monitoring loudspeakers
Key Features: Historic Soho recording studio lineage, built by Lockwood for the classic 15" Tannoy Monitor Gold dual-concentric drivers
Verdict: The discovery of two of the original monitoring loudspeakers from the birth of Trident Studios in 1968 was thrilling. From The Beatles, The Stones, David Bowie, Queen, Lou Reed and lots more, they all used these very loudspeakers to produce some of the most important music ever.
Reviewer Rating: 5.0 / 5.0
The Tannoyista system with the Trident Studios Lockwood Majors
The ex-CTS Studios Lockwood Universal Loudspeakers are vintage studio monitor enclosures associated with CTS Studios Lansdowne and later Toe Rag Studios. This review covers their use with Tannoy Monitor Gold 12-inch drivers, their large cabinet volume, studio heritage, and the author's experience using them in a domestic listening environment.
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Discover the ex-CTS Studios Lockwood Universal Loudspeakers
Equipment Overview & Review Summary
Product
ex-CTS Studios Lockwood Universal Loudspeakers
Type
Vintage Studio Monitor Enclosures / Loudspeakers
Category
Loudspeakers
Key Technologies
Large Lockwood Universal cabinet design, used with Tannoy Monitor Gold 12-inch drivers and custom made crossovers.
Recommended For
Listeners interested in vintage studio monitor loudspeakers and historic Tannoy Monitor Gold based systems.
Verdict
A vintage studio monitor setup with historic CTS Studios and Toe Rag Studios connections, reviewed through the author's experience with Lockwood Universal cabinets and Tannoy Monitor Gold drivers.
Tannoyista Rating
4.7 / 5
Josie Willow-Hecate Lewis — 6th September 2012.
Discover the ex-CTS Studios Lockwood Universal Loudspeakers
T
annoys are curious creatures. They carry a distinctly British character — reserved yet expressive. The Lockwood Universal, in particular, has a focused treble hot spot that creates a recessed listening zone compared to more conventional designs. But once you're in that zone ... you're not coming out. It's immersive, magnetic, and unapologetically precise.
My original cabinets were the Lancaster's made by Tannoy in the late '60s, these cabs were approx 100ltrs with a reflex port. My Monitor Golds are the 12" version of which the Lancaster cabinets are more suited to as opposed to 15" MG's in Lancasters. But I had a problem. Occasionally with some recordings the lower frequencies and the mids seemed compressed sometimes and tubby sounding.
After some work bracing an additional scrappy pair of cabinets and then re-foaming them it didn't cure their shortcomings for me. It was a shame as the Lancaster cabinets looked superb and sounded great but they were just not right.
One experiment was to take the back panel off. I felt this would basically squeeze the sound clean of any involvement but when I did ... wow ... what a difference. They sounded very different indeed so this confirmed to me what these speakers could sound like and the potential they have locked away. So this then got me thinking ... I needed some bigger cabinets.
Some Lockwood cabinets came up for sale that looked like they would fit the bill perfectly. They are Lockwood Universal cabinets from the late '60s. They are just over 200ltrs and which to be honest I had only seen one other pair like them before.
Back in 2003 I found a website with an article about a studio down in London called Toe Rag Studios. The article was absolutely fascinating and right up my street regarding vintage equipment.
Photo: Copyright Richard Ecclestone
Since then I occasionally followed the studio's portfolio as it was producing some superb recordings with the likes of Supergrass, The White Stripes and Hugh Cornwell to name just a few. It was this picture that was totally inspiring to me. In fact the White Stripes album Elephant was recorded here.
Photo: Copyright Richard Ecclestone
Yes ... that is an original EMI REDD 17 mixing desk from Abbey Road of which only a couple still exist, also in there are some Studer tape machines and an amazing amount of other goodies.
Photo: Copyright Richard Ecclestone — Liam and the Lockwoods
Note the speaker cabinets in the pictures ... Those cabinets are the Lockwood Universals with ceiling hangers.
So when I saw the pictures of the advertised cabinets they had a grey/blue painted finish but I didn't realise that these were the same type as in the studio above until I got them home when I recognised the round metal hanging plate on each side.
I dropped Liam an email and found that the cabinets came from Toe Rag in Hackney.
Photo: (C) 2011 StayLooseDigitalGroup
So after nearly 10 years of enjoying the output from Toe Rag Studios I found myself with the actual speaker cabinets that had been used there for over 10 years. A quick email (with thanks) to Liam the owner of Toe Rag Studios confirmed this.
But the story doesn't end there. I asked Liam where he originally acquired the cabinets from. He purchased them from an auction when CTS Studios Lansdowne in London closed in 2000, ending a 57-year history at that location. The cabinets came from one of the projection rooms which was very interesting as they recorded a lot of soundtracks there like Casino Royale and James Bond as well as Ella Fitzgerald, Queen, and Paul McCartney.
Cabinets in detail
So ... a very cool history. The sound from the 12" MG's in these cabinets is vast, no tubbiness or anything, and these really do shift some air with the recently updated crossovers too. After doing some research I found that the 12" MG's need cabinet volumes of 150 to 230ltrs so for the size of these drivers we are pretty much hitting the middle there.
Admittedly I did ask the wife if I could hang them from the ceiling but she just gave me “that look” to which I stepped away from — but they do make magnificent domestic speakers and knowing the history of the cabinets is a great thing to have seeing as some of my all-time favourite bands must have sat in front of these listening to mixes is kind of satisfying.
And then, of course, is the most important thing ... the sound. These speakers in these cabinets reproduce music to an amazing degree of accuracy in a domestic environment. And with them placed on the floor opposed to being hung the sound is at ear level and makes for a big and un-restricted level sound stage.
Equipment used at the time of writing:
CROFT 25 PRE
CROFT 7R+ (Special lower-powered version)
THORENS TD124 MKII
PIONEER RT-909 BLACK
TANNOY MONITOR GOLD 12"
LOCKWOOD UNIVERSAL CABINETS
CUSTOM MADE CROSSOVERS
To finish, a quote from Liam which I feel encapsulates studio production as well as home listening very well:
"You don't need to f ** k around with stuff because if it sounds good in the room, if you're using the right microphones in the right positions it should sound good in the control room as well. The less you do, usually, the better it sounds. Go with your gut instinct - if it sounds good, don't start worrying about 'Oh, but what if it sounded ...' Resist those temptations to suddenly switch the EQ knob on and start f ** king around with it, because you'll lose your way. That's what I think, anyway."
– Liam Watson, Toe Rag Studios (Quoted from SOS 2003)
Frequently Asked Questions
What makes the Lockwood Universal cabinets special?
The Lockwood Universals were purpose-built studio monitor enclosures used in British studios including CTS Lansdowne and Toe Rag. The review describes their large internal volume and use with Tannoy Monitor Gold drivers.
Why do the Lockwood Universals sound different from Lancaster cabinets?
The review explains that Lancaster cabinets are around 100 litres and that the Lockwood Universal cabinets are just over 200 litres, providing a different enclosure size for the 12-inch Monitor Gold drivers.
Did removing the back panel really improve the sound?
The review states that removing the back panel produced a significant difference and confirmed the potential of the speakers, leading to the search for larger cabinets.
Where did these particular cabinets come from?
The review explains that the cabinets came from Toe Rag Studios and were originally acquired from an auction when CTS Studios Lansdowne in London closed in 2000.
Are Lockwood Universals suitable for home listening?
The review describes the Lockwood Universal cabinets as being used in a domestic environment, where they produced a large and unrestricted sound stage.
What equipment pairs well with these cabinets?
The equipment used at the time of writing included a Croft 25 Pre, Croft 7R+ amplifier, Thorens TD124 MKII, Pioneer RT-909 Black, Tannoy Monitor Gold 12-inch drivers, Lockwood Universal cabinets and custom made crossovers.
About the Author
Josie Willow-Hecate Lewis — audiophile equipment reviewer with more than 30 years of experience covering analogue turntables, valve amplification, loudspeakers, studio monitoring systems and high-end hi-fi design.
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