How MCA Judges Sound Quality — Fair, Transparent, and Focused on the Music
At Mid-Country Audiophiles (MCA), we judge sound quality by what matters most: music, accuracy, and craftsmanship. Below, you’ll find a detailed breakdown of scoring, class structures, and technical guidelines — designed to help every competitor know exactly where they stand.
📊 MCA Official Scoring Breakdown — 200 Total Points
MCA uses the standardized ICA/ECA SQ Scoresheet, designed to reward musical accuracy, stage presentation, and system realism. Here’s the full breakdown:
| Category | Max Points | Details / Judge Focus |
|---|---|---|
| Imaging | 30 | Focus, depth, center stability, left/right placement accuracy |
| Stage Width | 20 | Does the stage extend beyond the vehicle’s boundaries as appropriate? |
| Stage Height | 10 | Can the system scale vertical information correctly? |
| Tonal Accuracy | 80 | Accuracy of timbre, instrument & vocal reproduction, based on the master recording |
| Spectral Balance | 10 | Balance of lows, mids, and highs across low/mid/high volumes |
| Dynamics | 10 | Accuracy of attack, decay, transients across the music |
| Listening Enjoyment | 10 | Musicality, emotional engagement, system’s ability to disappear |
| Realism | 10 | Does the system convincingly place you in the performance environment? |
| Deductions | -10 max | For issues like resonance, sound pulling back, noise/artifacts, hiss |
✅ Maximum Score: 200 Points (before deductions)
✅ Deductions: Up to -10 points for technical flaws
🔎 Detailed Scoring Notes from the Official Rubric
🎯 Imaging (30 Points)
- Focused image placement — left, center, right must be stable
- Horizon stability critical — images shouldn’t wander or shift with volume
- Scoring favors precise, realistic focus without image collapse
🎯 Stage Width (20 Points)
- Full width expected on wide recordings — beyond the A-pillars
- Penalizes compressed or narrowed stage presentations
🎯 Stage Height (10 Points)
- Ranges from dash level to above the windshield based on the recording
- Systems must scale appropriately — over or under-scaling loses points
🎯 Tonal Accuracy (80 Points)
- Weighted heavily — evaluates instrument and vocal timbre accuracy
- Considers the ability to reproduce a true-to-master sound
- Full score (20 per section) reflects reference-quality reproduction
🎯 Spectral Balance (10 Points)
- Balance at low, mid, and high volume levels
- Judges note peaks, dips, or masking that distort proper balance
🎯 Dynamics (10 Points)
- Captures system’s ability to render micro and macro dynamics
- Attack, decay, and transients must sound natural and fluid
🎯 Listening Enjoyment (10 Points)
- Subjective but meaningful — is the system enjoyable and emotional?
- Judges assess if the sound invites the listener into the performance
🎯 Realism (10 Points)
- Does the system create the illusion of the performance space?
- Highest scores awarded for systems that “disappear” and place the listener in the studio or hall
🎯 Deductions (Up to -10)
| Issue | Penalty Range |
|---|---|
| Resonance | -1 to -5 |
| Sound Pulls Back | -1 to -3 |
| Noise/Artifacts/Hiss | -1 to -2 |
Judges assess deductions independently of the main scoring categories.
🔥 Tie-Breaker Priority
- Tonal Accuracy
- Spectral Balance + Dynamics + Listening Enjoyment (combined)
- Stage Width / Height
- Realism
🏆 Competitor Takeaway
- Tonal Accuracy rules the scoresheet — 40% of total points
- Consistent, balanced performance at all volume levels is critical
- Resonance, artifacts, and sound pullbacks will cost you — even great systems must manage the details
Download the Full MCA Scoresheet PDF (Coming Soon)
Mid-Country Audiophiles — Where Car Audio Sounds Better.
🎧 Official Music Playlists
Competitors must have access to the official MCA playlist. Judges may select any combination of tracks during scoring.
No test tones or unapproved music.
📖 Exclusive Track Notes — A Member Advantage
At MCA, sound quality is about more than playing music — it’s about knowing what the music is asking of your system.
🔎 What Are Track Notes?
Before each event, MCA Members receive access to official Track Notes — detailed, professional breakdowns of every judging track.
These notes explain:
- What each track tests (imaging, tonality, staging, dynamics)
- Critical elements judges listen for in vocals, instruments, and ambient space
- Staging expectations — where sound should appear in the car
- Timing cues — specific moments that expose system strengths and weaknesses
🎯 Why It Matters
Winning competitors don’t guess — they prepare.
Our Track Notes give you:
- The inside edge on exactly what judges expect
- A technical map to tune toward the reference
- Better understanding of how music reveals flaws no RTA will show you
📌 Exclusive to MCA Members
- Track Notes are not public
- Available only to paid MCA Members
- Designed by ICA/MCA judges and competitors to help you refine your sound
✅ Pro Tip:
Study the Track Notes — they’re often the difference between “good” and “best” in a tight lane.
Join MCA to unlock this competitive advantage.
🛠 MCA Class Structure — Installation Complexity Defined
MCA classes are based on system design and installation complexity — not budget, brand, or experience.
All competitors may choose to move up in class, but not down.
✅ OE1 — Basic Factory or Light OEM+
- Stock HU or direct-fit replacement (same location)
- No external DSP if head unit swapped
- Minor speaker swaps — no cutting or custom panels
- Tweeter size max: 1.2″
- No dash pods or pillar builds over 1″ protrusion
- Factory subwoofers only, no added sub forward of B-pillar
✅ OE2 — Factory+ with Mild Integration
- HU swapped or retained with DSP integration
- DSP allowed if feeding from factory source
- Tweeter size max: 2″
- Dash/pillar protrusion max 2″
- Minor dash modifications (cutting < ¼”)
- Subwoofer allowed anywhere IF no pillar/dash pods >3″
✅ INT3 — Integrated Custom
- DSP and any external EQ allowed
- A-pillar/sail panel tweeters up to 3″
- Dash pods max 4″
- Door speakers upgraded with light grill mods, no enclosures
- Custom kick panels allowed if A-pillars stay <3″
- Sub placement flexible if no pillars/dash pods >3″
✅ INT4 — Advanced Integrated
- A-pillars/sail panel tweeters up to 4″
- Dash pods up to 4″
- Full door panel rebuilds allowed
- Custom kick panels, floor speakers
- Subwoofers flexible but limited if pillar/dash >3″
✅ M4+ — Modified Class
- Any custom fabrication allowed
- A-pillars, sails, dash — no size limit
- Full interior rebuilds, kick panels, enclosures
- Subwoofer placement unrestricted
- Ideal for fully reworked competition builds
✅ M5+ — Extreme/Unlimited
- Anything goes — no install restrictions
- Multi-seat or large format systems
- Metal cutting, extreme fabrication
- Computers, 120V gear allowed
- Perfect for high-end demo builds
🪛 Key Rules for All Classes
- No EQ limit — DSP is fully legal if class allows
- 120VAC equipment and computers permitted in all classes
- External window coverings for judging allowed
- Class gray areas? Head Judge ruling is final
🚗 2-Seat Sound Quality Class
Designed to test staging and imaging for both seats simultaneously:
- Scoring emphasizes dual-seat accuracy
- Separate judging sheet from 1-seat SQ
- Same 200-point total
🎤 SQ Demo Format (Optional)
- $20 buy-in, winner-takes-all
- Judges select best demo based on emotional engagement, realism
- Freestyle — no scoresheet
- Shared track(s) announced day-of event
📈 Event Multipliers
The number of judges sets the multiplier, affecting season points:
- 1X: Single judge
- 2X: Two judges, averaged
- 3X: Three judges, averaged
- 4X: Four judges, averaged
🔎 Quick Reference Class Grid
| Feature / Class | OE1 | OE2 | INT3 | INT4 | M4+ | M5+ |
|---|---|---|---|---|---|---|
| HU Swap Allowed | No | Yes | Yes | Yes | Yes | Yes |
| DSP Allowed | If OEM HU only | Yes | Yes | Yes | Yes | Yes |
| Tweeter Max Size | 1.2″ | 2″ | 3″ | 4″ | Any | Unlimited |
| A-pillar Depth | 1″ | 2″ | 3″ | 4″ | Any | Any |
| Door Mods Allowed | No | Light | Light | Full rebuild | Full | Full |
| Kick Panels | No | No | If pillar <3″ | Yes | Yes | Yes |
| Subwoofer Limit | OEM | Limited | Flexible | Flexible | Any | Any |
🤝 Competitor Notes
- Choosing your Class: If unsure, ask for Head Judge ruling before competing
- Up-Classing is allowed: You may compete in a higher class than your build requires
- Transparent Scoring: Full scores posted after every event
✅ Ready to Compete?
Join MCA Membership — get judged on sound, not marketing.
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Mid-Country Audiophiles — Where Car Audio Sounds Better.