Meridian Unplugged - Powered by MrTechGuy.co.uk Forums Discussion HiFi & HT Chat Which speakers matter most for Dolby Atmos?

Thanks again Spinaltap.

That snippet, along with many other critical observations regarding Atmos* that were encountered along the way, does nothing to convince that it is all worth while.


To summarise that and some of the others as to why Atmos disappoints:

(1) The Atmos soundtracks are often awful (i.e. poorly engineered and mastered)

(2) Good Atmos soundtracks may not even have any overhead effects (as though steered 3D objects cannot be used for 2D effects like a passing car/train/arrow)

(3) Even if the soundtrack has good Atmos effects, the processor is not good enough unless it can magically process Dolby Digital to make it sound better than Atmos

(4) The speakers are in the wrong place for the processor so you need one capable of fixing that

(5) And when the soundtrack, the processor and the speakers are all fixed, you are sitting in the wrong place...


Yes, I am being slightly disengenuous and selective.

But the last point just made me laugh. Atmos is designed for large cinema theatres with viewers all over the auditorium - so everyone is in the wrong place; the numerous effects channels are designed to fix exactly that problem in large spaces.

My only real experience to date with Atmos was "Gladiator II" in an Atmos-equipped cinema in Islington. It was OK but the front image from actor's voices was projected well into the auditorium away from the screen and seemed very unnatural. The surround/overhead effects were just like every other cinema.



* Using Atmos as short-hand for 3D object-based sound tracks and sound systems

Before you completely dismiss Atmos, find a suitable audio dealer that has a home-theatre demonstration room.

Given that you're located in London, I suggest visiting the KEF Music Gallery where they have such home theatre demonstration facilities.

Then, at least, you can authoritatively make up your own mind from personal experience - rather than simply reading about it.

I am not dismissing Atmos by any means - the internet critics seem to be doing that - just not convinced in my room it would bring enough extra to justify the outlay and disruption. You have the advantage (I believe) of starting with more of a blank slate.

Was at that KEF place on Friday checking out their new wireless DSP speakers. The trouble with a demo in those surroundings (I have been in there, albeit not for a full, critical demo) is the room is very different (they have low ceilings, low seating, and I suspect wall treatments) and the speakers are not mine so it really does not add useful data to my experience.

One might assume that the Islington cinema set-up was optimised but it was certainly unimpressive.

But this brief discussion has been very helpful and illuminating so thank-you again. And I hope your system sounds top-notch.

FWIW, when I asked AI what improvement I would experience moving from a previous Meridian G95 5.1 system (with MRC Room Correction) to a Trinnov Altitude CI 5.1 system (with Optimizer Room Correction), its answer was:

It will not feel like an incremental upgrade; it will feel like moving from a high-quality domestic audio system to a commercial dubbing stage.

The Trinnov 3D Optimizer does not just measure sound pressure level (SPL); it measures sound in four dimensions (time, space, phase, and frequency) using its proprietary 4-element 3D calibration microphone.

Impulse Response Correction: The Trinnov aligns the arrival time of every single frequency component coming out of your Meridian speakers. Instead of just flattening EQ, it ensures that the high frequencies, mid-range, and low frequencies reach your ears at the same microsecond.

Phase Correction: Room boundaries cause reflections that rotate the phase of sound waves. The Trinnov corrects phase anomalies across the entire audio spectrum, making the acoustic walls of your room effectively disappear.

Active Phase Alignment: The Trinnov Altitude will measure the exact acoustic group delay of your Meridian active subwoofer relative to the active Meridian DSP main speakers.

Seamless Transition: Instead of hearing "mains handling vocals, sub handling bass," the Trinnov will lock the phase of the bass driver in your mains to the active subwoofer so tightly that the sub will completely vanish. Bass notes will sound like they are physically originating directly from the front soundstage, with lightning-fast attack and zero hangover or boominess.

Three-Dimensional Soundstage Width & Depth: Standard 5.1 soundtracks will sound wider, taller, and deeper than before. Trinnov's spatial processing resolves micro-details in ambient sound (wind, rain, reverberation) that were previously masked by passive crossover phase errors and basic receiver DACs.

Gianni, just to complicate matters, regarding the choice of overhead speakers.

When initially looking to buy overhead speakers, I intuitively looked at their low-frequency performance relative to my main speakers. This was a rookie mistake, as my Trinnov Altitude CI will always divert frequencies below 80hz to my DSW.2.

Forgive my long and detailed response, but the choice of overhead speakers is important if you want to fully embrace Atmos and DTS:X in a Meridian system. The following considers my original choice of 4 x KEF Ci200RR-THX and my final choice of 4 x Focal 1000 ICA6 overhead speakers.

This is one of the most common and completely logical 'head-scratchers' in high-end audio engineering. It feels entirely counterintuitive: Why pay thousands for a speaker like the KEF Ci200RR-THX (capable of 33 Hz) or the Focal 1000 ICA6 (capable of 55 Hz) if the processor cuts them off at 80 Hz anyway?

It can feel like buying a supercar and putting a 50 mph speed governor on it. However, you are not wasting your money on a capable speaker. You are paying for low-distortion headroom, dynamic impact, and cone control within the frequencies it does play.

Here is the acoustic and physical breakdown on why cutting a capable speaker off at 80 Hz actually unlocks its performance, rather than stifling it.

1. 'Playing' 35 Hz vs 'Reproducing 35 Hz at 105 dB'
When a manufacturer lists a frequency response like 33 Hz−28 kHz on an in-ceiling speaker, that measurement is taken in an anechoic chamber at a modest volume (usually 1 Watt/85 dB).

However, Dolby Atmos soundtracks are mixed to Cinema Reference Standards. At reference level, a channel must be able to hit 105 dB sound pressure peaks at your seat without distorting.

Here is the physical problem with low frequencies: To reproduce a 30 Hz bass wave at 105 dB, a speaker cone has to move 16 times further (excursion) than it does to reproduce a 120 Hz tone at the same volume.

If you force an in-ceiling speaker - even a brilliant 8-inch KEF or Focal - to physically move back and forth by several centimetres, trying to produce a violent 35 Hz thunderclap produces Intermodulation Distortion (IMD): While the main cone is buckling violently back and forth, trying to pump out that 35 Hz wave, it is simultaneously trying to reproduce a sweet 2 kHz vocal or a high-frequency spatial cue. That violent movement modulates and degrades the higher frequencies, making the overhead soundstage sound harsh, muddy, and strained.

Thermal & Mechanical Compression: The voice coil heats up rapidly, trying to move that air, causing power compression.

The 80 Hz Benefit: When the Trinnov relieves the Focal or KEF of that brutal sub-80 Hz heavy lifting, the speaker cone hardly has to move at all.

Because it isn't struggling with massive physical displacement, the speaker can reproduce the 80 Hz to 20,000 Hz spectrum with virtually zero distortion, razor-sharp speed, and incredible dynamic clarity. You aren't wasting the Focal's capability; you are allowing its rigid 'W' cone and Beryllium tweeter to operate in their absolute ‘sweet spot’ without mechanical strain.

2. The Physics of Ceiling Voids vs. Subwoofer Enclosures
Deep, tactile bass (20 Hz−60 Hz) requires two things: air displacement and a rigid, pressurised cabinet.

Your Meridian DSW.2 Subwoofer: Features a massive, ultra-rigid, sealed/braced cabinet powered by a high-current internal amplifier specifically engineered to compress the air inside its cabinet and dump massive acoustic energy into the room without vibrating.

An In-Ceiling Speaker: Even with a Firetopper hood or rigid backbox, an in-ceiling speaker sits in a hollow plasterboard void. Plasterboard is structurally weak. If you pump 35 Hz energy at high volume into a ceiling structure, the plasterboard sheets will physically flex and vibrate, creating mechanical rattles in your joists. The bass energy bleeds instantly into the joist space and transmits into the rooms directly above you.

By letting the Meridian DSW.2 (resting solidly on the floor) it handles everything below 80 Hz, you keep deep structural vibration off your plasterboard ceiling while keeping the bass localised to solid room boundaries.

3. 'Boundary Gain' & Room Modes (Why Bass Position Matters)
Low-frequency sound waves (30 Hz−60 Hz) are several meters long. When a speaker generates a 40 Hz wave from the middle of your ceiling, that wave bounces off the ceiling, the floor, and the walls, colliding with itself.

This creates Room Modes - severe acoustic 'cancellations' (where the bass completely vanishes at your chair) and 'booms' (where the bass gets horribly muddy).

Ceiling Speakers: Mounted in fixed architectural grids (like your 1.26m on-centre layout). These positions are selected for visual symmetry and high-frequency spatial imaging, but they are almost always horrible locations for low-frequency room modes.

The Subwoofer: Positioned specifically where it can pressurise the room evenly. If your Focal overheads played down to 35 Hz, the 35 Hz energy coming from 4 different points on your ceiling would cancel itself out at your listening position due to boundary reflections. You wouldn't actually hear or feel that 35 Hz bass—it would disappear into acoustic nulls.

Routing that energy to the Trinnov-managed DSW.2 ensures that 35 Hz hits your seat with maximum impact and zero phase cancellation.

Summary: Why Buy an Expensive Overhead Speaker, Then?

A: Cheap Overhead speakers (cut off at 80hz)

Max clean output 80hz -20khz: Distorts at 90db; sounds thin and harsh.

Transient Speed/Clarity: Heavy/Cheap Polypropylene Cones blur fast sound effects.

Timbre Match: Sounds bright or boxy compared to the Meridian bed layer.

Power Handling: Voicecoils overheat during intense Cinema scenes.

vs

B. KEF Ci200RR-THX/Focal 1000 ICA6 (cut off at 80hz).

Max clean output 80hz -20khz: Hits 105db reference peaks effortlessly with zero strain.

Transient Speed/Clarity: Focal ultra-light 'W' sandwich cones render micro-detail and panning effects instantaneously.

Timbre Match: Seamlessly matches the speed, resolution, and tone of high-end main speakers.

Power Handling: Robust voice coils handle heavy continuous power from your Meridian 258 amp.

You don't buy the Focal 1000 ICA6 or KEF Ci200RR just to get 'deep bass' - you buy them for pristine clarity, high-volume headroom, and flawless tonal matching with the Meridian front stage.

Capping them at 80 Hz doesn't waste their ability; it protects their brilliant mid-range and high-frequency performance from being ruined by the violent mechanical demands of deep bass.

Overall Summary:

When comparing the Focal 1000 ICA6 against the KEF Ci200RR-THX the distinction comes down to acoustic geometry, driver orientation, and system timbre matching.

While the KEF Ci200RR-THX is a legendary in-ceiling speaker featuring KEF’s famous Uni-Q point-source driver, the Focal 1000 ICA6 introduces structural and material engineering advantages that make it a superior choice for your specific system architecture.

When a sound object (such as a jet or a bullet) pans from your front Meridian DSP speakers up into the ceiling, timbre matching is critical. If the overhead speaker uses a heavier or less damped cone, the 'tone' of the object changes as it moves overhead. The Focal 1000 ICA6 utilizes the exact same flagship driver materials found in Focal's £110,000 Stella Utopia floorstanding speakers, giving it a level of transient response and neutrality that bridges seamlessly with Meridian's digital accuracy.

Choosing the Focal 1000 ICA6 over the KEF Ci200RR-THX provides three distinct performance gains:

Direct Sound Arrival: The built-in 35-degrees tilt aims the sound directly at your seating position, maximising the precision of Dolby Atmos height effects.

Speed & Detail: The Pure Beryllium tweeter and 'W' sandwich cone deliver micro-transient speed that matches the pristine digital output of your Trinnov.

When comparing the Focal 1000 ICA6 against the KEF Ci200RR-THX in a standard room, the distinction comes down to acoustic geometry, driver orientation, and system timbre matching.

While the KEF Ci200RR-THX is a legendary in-ceiling speaker featuring KEF’s famous Uni-Q point-source driver, the Focal 1000 ICA6 introduces structural and material engineering advantages that make it a superior choice for your specific system architecture. Meridian front stage.

Reduced Room Interaction: Firing sound at the listener rather than straight down reduces secondary reflections off hard floor surfaces and furniture, giving the Trinnov Optimizer a cleaner signal to calibrate.

Through its bass management features the Trinnov can be set to run whatever low frequencies you desire to each speaker. The caveat here is that most soundtracks don't have any low bass to send to those speakers. This can be demonstrated by muting the LFE or other channels during big bass or action sequences to see what they are actually receiving. If I mute the LFE channel in my system, my 8000XE's sound very thin in the bass region. My bass management settings are for full range with no high pass or low pass filters engaged

My choice isn't just about the bass...

If human hearing caps out at around 15 kHz to 20 kHz (and often closer to 12 kHz to 14 kHz for adults in their 60s), why should anyone care if a Focal Beryllium tweeter goes all the way up to 40 kHz, while the KEF's aluminum tweeter tops out around 28 kHz?

You are not listening to ultrasound frequencies. You cannot hear a 30 kHz tone.

The value of that ultra-high frequency spec has nothing to do with hearing sound in the ultrasonic spectrum. Instead, it is entirely about how the tweeter behaves inside the human audible range (20 Hz−20 kHz).

Here is the mechanical and mathematical physics of why a 40 kHz extension makes a massive difference to what you actually hear.

1. Moving the ‘Break-Up Mode’ Far Away From Your Ears
Every physical speaker diaphragm (whether made of paper, aluminum, or beryllium) is stiff, but it is not infinitely rigid. As a tweeter vibrates back and forth tens of thousands of times per second, there comes a point where the material can no longer move as a single, perfect unit.

Instead, the metal dome begins to bend, flex, and twist out of shape. This mechanical failure is called Tweeter Break-Up Mode.

When a tweeter hits its break-up frequency:

* It produces a massive spike in harsh metallic resonance.

* It introduces severe phase distortion and ringing.

* Even worse, this mechanical violence creates Intermodulation Distortion (IMD), which bleeds downward into the lower frequencies (2 kHz−10 kHz) that your ears are highly sensitive to - making sibilance ('s' and 't' sounds) sound sharp, brittle, and fatiguing.

The Material Difference:
Aluminum (KEF): Aluminum is relatively light, but it is not extremely stiff. An aluminum dome typically reaches its mechanical break-up point around 22 kHz to 28 kHz. Because 22 kHz is right on the edge of human hearing, the 'slope' or 'tail' of that harsh mechanical ringing bleeds directly down into the 10 kHz−15 kHz range. This can add a subtle 'metallic glaze' or harshness to high-energy sounds like cymbals, glass shattering, or high-frequency film effects.

Pure Beryllium (Focal): Beryllium is 7 times stiffer than steel and 2.5 times lighter than aluminum. Because it is ridiculously stiff and light, its mechanical break-up mode doesn't happen until an astounding 40 kHz+.

By pushing the mechanical distortion point all the way up to 40 kHz, the Focal tweeter operates as a perfectly rigid, distortion-free piston throughout the entire audible spectrum (20 Hz−20 kHz). You aren't listening to 40 kHz; you are enjoying a 12 kHz tone that is completely free from the mechanical ringing of a flexed dome.

2. Phase Alignment & Impulse Response (Time Domain)
Sound isn't just about frequency (pitch); it is heavily about time (impulse response).

When a film sound effect occurs - like a gunshot, a raindrop hitting a leaf, or a lapel microphone catching a spoken word - it is a sudden, sharp transient peak.

If a tweeter has a frequency limit near the audible boundary (e.g., 22 kHz), the electrical filters and natural physical roll-off introduce phase lag (group delay) at frequencies well below that limit. The 12 kHz harmonics end up arriving at your ear a microsecond later than the 2 kHz fundamental tone.

Your brain uses these microsecond arrival times to locate where a sound is coming from in 3D space.

Because the Focal's Beryllium tweeter extends out to 40 kHz, its phase response across the 1 kHz−15 kHz band is flat and phase-linear. The harmonics and the fundamentals arrive at your ears at the same microsecond. This gives the Focal startling transient speed and spatial imaging - the sound objects overhead don't just sound like ‘a noise from a speaker’, they sound like pinpoint objects floating in mid-air.

3. Why This Matters Alongside Your Meridian DSP5200SEs
This is the most critical point for your specific system: Timbre Matching and Phase Speed.

Your Meridian DSP5200SEs are Special Edition, active digital speakers. They do not use standard passive crossovers or conventional slow tweeters:

They feature custom, ultra-light Beryllium dome tweeters or clamp-loaded horn/short-coil drivers driven directly by dedicated digital amplifiers.

The Meridian digital crossover is phase-linear in the time domain, giving the DSP5200SEs legendary transient speed, control, and zero top-end smear.

The Acoustic Handshake:
If an Atmos sound object (e.g., a helicopter or bullet) pans from your Meridian DSP5200SE front stage up into the ceiling:

If using a slower, conventional tweeter, overhead: As the sound transitions from the Meridian to the ceiling, your brain will instantly spot the change in texture. The object will sound crisp and fast at the front, but turn slightly ‘thicker, warmer, or harsher’ as it moves overhead. The seamlessly unified acoustic bubble is broken.

Using the Focal 1000 ICA6 overhead: Because the Focal uses a matching Pure Beryllium inverted dome with similar stiffness, speed, and distortion-free piston action, the acoustic signature of the overhead speaker completely mirrors the speed and texture of your Meridian front stage.

The sound object doesn't feel like it is jumping from a ‘Meridian speaker’ to a ‘ceiling speaker’ - it feels like a single, continuous, ultra-resolving sonic canvas stretching from floor to ceiling.

Target Curve Optimization (Timbre Matching)
Meridian speakers have a legendary sound signature - characterized by zero high-frequency harshness, extreme transient speed, and a smooth, uncoloured midrange. Off-the-shelf architectural speakers often sound overly bright by comparison, which ruins the illusion when a sound pans from a main speaker to an overhead speaker.

Configure the following Target Curve in your Trinnov Altitude specifically for the Focal Overhead Channels:

* 20 Hz to 200 Hz: Keep flat with a gentle +1.5 dB room-gain curve matching the behavior of your Meridian mains (this prevents a 'thin' sounding ceiling layer).

* 200 Hz to 2,000 Hz: Linear, flat response (0 dB deviation).

* 2,000 Hz to 10,000 Hz: Apply a steady downward tilt of -0.5 dB per octave.

* 10,000 Hz to 20,000 Hz: Increase the roll-off to -1.5 dB per octave.

Why this works: The Focal 1000 ICA6's Pure Beryllium tweeter is incredibly fast but physically distinct from the Meridian digital crossover network. Forcing this target curve smoothly relaxes the upper-mid/lower-treble bite of the Focal, allowing it to seamlessly match the signature warmth and authority of your Meridian bed channels.

Just to round this up, if my listening room wasn't compromised by ceiling beams (and an asymmetric rear wall) I might have seriously opted for 4 x Meridian DSP320.2 overhead speakers rather than 4 x Focal 1000 ICA6s.

Would keeping it all in the Meridian family have been the better choice?..

Stripping away the physical constraint of your ceiling beams and evaluating this purely as an architectural audio engineering comparison reveals a fascinating choice: Meridian DSP320.2 (In-Ceiling Active Digital) versus Focal 1000 ICA6 (Passive Flagship Driven by a Meridian 258 Power Amplifier).

Even with the Trinnov Altitude CI managing the sub-80 Hz crossover to your DSW.2 subwoofer, the Focal 1000 ICA6 remains the superior choice for your specific room setup.

Here is the technical, acoustic, and system-level breakdown on why the Focal surpasses the Meridian DSP320.2 in this application, along with the single advantage the Meridian would have offered.

1. Acoustic Geometry: 35-Degrees Angled Baffle vs. Flat Coaxial
This is the single most decisive physical advantage, independent of electronics or brand ecosystem.

Meridian DSP320.2: Features a completely flat, non-angled front baffle. When flush-mounted in a ceiling, its wide-dispersion driver array fires straight down toward the floor. When positioned 1.26m forward and backward of your MLP, your ears sit off-axis to the speaker's main acoustic beam. To compensate for off-axis high-frequency roll-off, the Trinnov Optimizer must apply digital EQ boost, forcing the internal amplifiers to work harder and creating unwanted reflections off the floor.

The Focal 1000 ICA6 is highly efficient at 90.5 dB (2.83V/1m). It features a dedicated 35-degree internal baffle tilt. When installed in the ceiling, the entire driver array rotates inside its housing to point directly at your ears at the MLP.

Why it matters: Firing directly on-axis delivers a vastly higher ratio of direct-to-reflected sound. You hear pristine, un-equalized high frequencies straight from the tweeter rather than secondary wall/floor bounce, resulting in significantly sharper 3D object placement in Dolby Atmos soundtracks.

2. High-Frequency Metallurgy & Dispersion: Beryllium vs. Aluminum
Both speakers utilize high-quality drivers, but their tweeter materials interact differently with your front bed layer (Meridian DSP5200SE):

Meridian DSP320.2: Employs an Aluminum dome tweeter paired with a wide-dispersion sound wave-guide. As established previously, aluminum tweeters have a mechanical break-up frequency around 22 kHz−25 kHz.

Focal 1000 ICA6: Features Focal’s flagship Pure Beryllium inverted dome tweeter, pushing mechanical break-up up to 40 kHz.

Because your front stage consists of Meridian DSP5200SE speakers - which feature custom Beryllium-spec, ultra-fast top-end drivers - the Focal 1000 ICA6 provides a 100% material match in transient speed and zero-distortion piston action. When a high-frequency sound effect pans from your DSP5200SEs up into the ceiling, the tonal texture and speed remain perfectly seamless.

3. Focal Impedance (5.1-ohms) is an Advantage with the Meridian 258
Because the Focal is a passive speaker driven by your dedicated Meridian 258 8-channel power amplifier, dropping to 5.1-ohms is a distinct performance benefit:

The Meridian 258 is a high-current Class-D amplifier built around Hypex Ncore technology. It delivers 70W into 8-ohms but ramps up to 100W per channel into 4-ohms.

When the Focal 1000 ICA6 drops from 8-ohms toward its 5.1-ohm minimum during intense, dynamic atmospheric passages, it draws more current from the Meridian 258, delivering 78.4W per channel. The amp delivers effortless dynamic headroom and instantaneous transient attack. To push a 90.5 dB efficient speaker to cinema reference peaks (105 dB) at a seated distance of 2 meters, the Focal speaker only requires 45 Watts of peak power.

This external, unconstrained power supply gives the Focal 1000 ICA6 superior dynamic headroom during high-SPL cinema transients (e.g., loud explosions or sudden overhead flybys) compared to an in-ceiling active backbox amplifier. It allows the Trinnov Altitude CI to execute clean active digital crossover processing, phase-linearization, and FIR filtering, feeding the pristine analog signal to the Meridian 258 power amplifier via the Meridian 271.

In contrast, the Meridian DSP320.2 uses internal 85W Class-D amplifiers tied to a fixed load inside its backbox - you cannot leverage the high-current delivery of the external Meridian 258.

4. Where the Meridian DSP320.2 Would Have Held an Advantage
To be entirely fair, there is one theoretical advantage the Meridian DSP320.2 holds:

Pure Digital Path to the Ceiling: Using the DSP320.2 keeps the signal in the digital domain all the way to the ceiling speaker via Meridian SpeakerLink (RJ45), using internal DSP crossovers before DAC conversion right at the driver.

Ecosystem Integration: If you were using a pure Meridian surround processor (like a Meridian Reference 861), staying in the 'Meridian Digital Ecosystem' maintains unified EBA (Enhanced Bass Alignment) timing protocols.

However, because your system's 'brain' is the Trinnov Altitude CI, this advantage vanishes. The Trinnov takes over all master clocking, 4D impulse timing, phase alignment, and crossover management. The Meridian 271, subsequently feeding the Meridian 258 power amplifier, delivers a signal so clean and phase-correct that any theoretical digital-link advantage of the DSP320.2 is completely eclipsed by the Focal's physical 35-degree angle and Beryllium driver superiority.

Summary
Even in a hypothetical world without ceiling beams, the Focal 1000 ICA6 combined with your Meridian 258 power amplifier is the superior acoustic choice over the Meridian DSP320.2.

The ability to aim the Beryllium tweeter and 'W' sandwich cone directly at the MLP at a 35-degree angle - delivering direct, un-reflected, high-headroom sound that perfectly mirrors the speed of your Meridian DSP5200SE bed layer - far outweighs any brand-matching benefit of an active flat-firing ceiling speaker.

Trinnov Altitude is blessed by the integration of DTS:X Pro...

DTS:X Pro expands standard DTS:X object-based decoding to support high-channel-count layouts without forced spatial downmixing or bed channel folding.

While basic DTS:X (found in consumer AV receivers) limits spatial decoding to 11.1 channels (typically 7.1.4), DTS:X Pro unlocks the full spatial resolution of the DTS object engine, scaling seamlessly up to 30.2 discrete channels.

In your specific 5.1.4 system (Meridian DSP5200SE LCR, Meridian M6 surrounds, Meridian DSW.2 subwoofer, and 4 x Focal 1000 ICA6 overhead heights), DTS:X Pro impacts your listening experience in three direct ways:

1. Advanced Spatial Remapping & Object Placement
In a standard 5.1.4 setup, basic DTS:X decoders map sound objects to fixed, predetermined speaker angles. If your speaker positions deviate even slightly from standard Dolby/DTS layout guides, spatial cues smear.

The Trinnov Integration: The Altitude CI combines DTS:X Pro’s high-precision object engine with Trinnov’s 3D Spatial Remapping algorithms (which use the 3D calibration microphone to pinpoint the exact X, Y, Z physical position of each speaker in your room).

The Result: DTS:X Pro calculates exact vector paths for sound objects across your 4 x Focal overhead heights and Meridian surround speakers. A moving sound object (like a helicopter flyover) transitions seamlessly between your 3D spatial points without sudden drops in volume or phantom image collapse.

2. Neural:X Spatial Upmixing (Legacy & Broadcast Content)
DTS:X Pro includes the upgraded Neural:X Pro upmixing engine. Unlike basic upmixers that simply matrix ambient noise into the height channels, Neural:X Pro uses phase/frequency analysis to steer sound objects to your Focal 1000 ICA6 height grid.

For Casual TV Viewing & Sports: When watching standard stereo or 5.1/7.1 broadcast TV, Neural:X Pro extracts height and ambient cues (crowd noise, reverberation, score instruments) and places them into your Focal overhead grid while keeping dialogue locked tightly to the centre speaker.

For Music: For legacy 2-channel stereo tracks, Neural:X Pro creates a subtle, three-dimensional acoustic envelope around your MLP without altering the tonal balance of your main Meridian DSP5200SE floorstanders.

3. Native Spatial Pinpointing for IMAX Enhanced & DTS Tracks
Many 4K Blu-rays and high-bitrate streaming tracks are encoded in DTS:X or IMAX Enhanced (which utilises a variant of the DTS:X codec).

No Channel Folding: Without DTS:X Pro, processors must fold missing channels or cap object count. With DTS:X Pro on the Altitude CI, every audio object in the stream is decoded at native resolution and rendered dynamically across your 9 main channels and subwoofer.

Subwoofer Integration: DTS:X Pro feeds LFE and redirected low frequencies directly into the Trinnov Optimizer’s bass management, allowing your Meridian DSW.2 sub to handle sub-bass transitions smoothly without phase cancellation from the bed channels.