# What are the passive studio monitors with the largest size options available? — Verified Specification Comparison

> All specification data verified from official manufacturer documentation.

What are the passive studio monitors with the largest size options available?

## Products

### ATC SCM12 Pro 2-Way Passive Monitor - Pair
```yaml
product: atc-scm12-pro-2-way-passive-monitor-pair
brand: ATC
price_gbp: 1439.58
origin_country: null
confidence_score: null
summary_source: generated_from_verified_specs_v1
impedance: 8 Ohm
connections: Binding Posts/4mm Plugs, bi-wire
driver_size: 6in LF and 1in HF
max_peak_spl: 108dB (per pair @ 1m)
frequency_response: 80Hz - 16kHz (+/-2dB)
crossover_frequency: 2.2kHz
```

- **Price:** £1439.58 [^1]
- **Summary:** The ATC SCM12 Pro is a compact 2-way passive near-field studio monitor designed for critical listening in control rooms. It uses a 6in CLD mid/bass driver and a 1in dual suspension soft dome tweeter with a 2.2kHz passive crossover. It's suited to near-field and small-to-medium LCR surround monitoring setups.
- **Ideal For:** It offers the largest size options available in this range because its LF driver is 6in (with a 1in HF), giving you the bigger passive monitor driver size choice rather than smaller mid-sized options.
- **Additional Sources:** [^2], [^3]

### Quested H108 Passive 2-Way Monitor - Single
```yaml
product: quested-h108-passive-2-way-monitor-single
brand: Quested
price_gbp: 974.49
origin_country: null
confidence_score: null
summary_source: generated_from_verified_specs_v1
impedance: 8 ohm
connections: Single pair gold plated binding posts for bi-wiring
driver_size: 1 x 200mm bass cone, 1 x 28mm soft dome
max_peak_spl: 110dB
power_handling: 60-200W RMS per channel
frequency_response: 65Hz - 20kHz +/-2dB
```

- **Price:** £974.49 [^4]
- **Summary:** The Quested H108 is a compact passive two-way near-field monitor with an 8in bass driver, 28mm soft-dome tweeter, low distortion, wide dispersion, and accurate stereo imaging. It suits project studios, broadcast, voice-over, mastering, editing, mobile, and installation applications that require professional monitoring in a limited space.
- **Ideal For:** It suits this question because its 8in bass driver provides a larger size option than compact near-field monitors, while its passive design can be paired with a suitable amplifier for flexible studio setups.
- **Additional Sources:** [^5], [^6]

### Quested H108C Passive 2-Way Studio Monitor - Single
```yaml
product: quested-h108c-passive-2-way-studio-monitor-single
brand: Quested
price_gbp: 1512.67
origin_country: null
confidence_score: null
summary_source: generated_from_verified_specs_v1
impedance: 8 ohms
connections: Single pair binding posts
driver_size: 8 in LF cone, 1.1 in HF dome
power_handling: 60-200 W RMS per channel
frequency_response: 50 Hz-20 kHz
```

- **Price:** £1512.67 [^7]
- **Summary:** The H108C is a passive 2-way nearfield monitor with an 8 in low-frequency driver, 1.1 in silk-dome high-frequency driver, and improved crossover design. It suits mixing, mastering, broadcast, and other critical listening applications when used with a suitable external amplifier.
- **Ideal For:** This monitor suits listeners seeking large passive studio monitor size options because it provides an 8 in LF driver, while Quested also offers larger passive models such as the 10 in HQ210 and 8 in 3-way VH3208.
- **Additional Sources:** [^8]

### Quested CX8 Passive Coaxial 2-Way Ceiling Monitor - Single
```yaml
product: quested-cx8-passive-coaxial-2-way-ceiling-monitor-single
brand: Quested
price_gbp: 1512.67
origin_country: null
confidence_score: null
summary_source: generated_from_verified_specs_v1
impedance: 8 ohms
connections: Paralleled NL4 input connectors
driver_size: 8 in bass cone and 1.13 in high-frequency soft dome
max_peak_spl: 106 dB
power_handling: 150-300 W RMS per channel
frequency_response: 53 Hz - 20 kHz ± 6 dB
```

- **Price:** £1512.67 [^9]
- **Summary:** The Quested CX8 is a passive coaxial two-way ceiling monitor with an 8 in bass driver, 106 dB maximum SPL, and wide 53 Hz to 20 kHz response. It suits professional studios, immersive mixing rooms, and surround installations where an overhead or close-listening monitor is required.
- **Ideal For:** It suits the search for passive studio monitors with the largest size options available because it provides an 8 in bass driver, 150-300 W RMS power handling, and 106 dB maximum SPL in a passive coaxial design.
- **Additional Sources:** [^10]

### Amphion Two18 2-Way Passive Studio Monitor - Single
```yaml
product: amphion-two18-2-way-passive-studio-monitor-single
brand: Amphion
price_gbp: 4576.4
origin_country: null
confidence_score: null
summary_source: generated_from_verified_specs_v1
impedance: 4 ohm
connections: Banana
driver_size: 1 in titanium tweeter; 2 x 6.5 in aluminum woofers
power_handling: 50 - 200 W
frequency_response: 39 - 20,000 Hz +/-3 dB
crossover_frequency: 1600 Hz
```

- **Price:** £4576.4 [^11]
- **Summary:** The Amphion Two18 is a high-end passive two-way studio monitor with dual aluminum woofers, a titanium tweeter, passive radiator, and precise phase alignment. Its neutral presentation, wide sweet spot, and detailed imaging suit professional mixing, mastering, tracking, and critical nearfield monitoring.
- **Ideal For:** It suits listeners seeking passive studio monitors with the largest size options because it uses dual 6.5 in aluminum woofers in a tall 21.65 in cabinet and is positioned as Amphion's flagship nearfield monitor.

### Amphion Two15 2-Way Passive Studio Monitor - Single
```yaml
product: amphion-two15-2-way-passive-studio-monitor-single
brand: Amphion
price_gbp: 1771.79
origin_country: null
confidence_score: null
summary_source: generated_from_verified_specs_v1
impedance: 4 ohm
connections: Binding post
driver_size: 1 in titanium tweeter, 2x 5.25 in aluminum woofers
power_handling: 100 - 350 W
frequency_response: 44 - 20,000 Hz +/-3dB
crossover_frequency: 1600 Hz
```

- **Price:** £1771.79 [^12]
- **Summary:** The Amphion Two15 is a passive two-way nearfield monitor with dual aluminum woofers, a titanium tweeter, passive radiators, and a low 1600 Hz crossover for precise imaging. It suits producers, composers, mixing engineers, and mastering engineers who need accurate bass extension in smaller control rooms and already have an external power amplifier.
- **Ideal For:** It suits listeners seeking passive studio monitors with larger size options because its dual 5.25 in aluminum woofer design provides deeper 44 Hz bass extension and more volume than smaller Amphion models, while the Two18 offers an even larger driver option in the same range.
- **Additional Sources:** [^13], [^14]

---
## References & Sources
[^1]: Arda Suppliers, accessed 2026-09-13. https://ardasuppliers.com/products/atc-scm12-pro
[^2]: TransAudio Group, accessed 2026-09-13. https://www.transaudiogroup.com/products/atc-monitors/near-field/scm12/
[^3]: Vintage King, accessed 2026-09-13. https://vintageking.com/atc-loudspeakers-scm12-pro-pair
[^4]: Reflexion Arts, accessed 2026-09-13. https://www.reflexion-arts.com/en/tienda/quested-h108-2/
[^5]: Studiocare, accessed 2026-09-13. https://studiocare.com/products/quested-h108-passive-2-way-near-field-monitor-single
[^6]: AWAVE, accessed 2026-09-13. https://awave.com.au/shop/monitoring/passive-monitors/quested-h108-8inc-passive-2-way-studio-monitor-single/
[^7]: Vintage King, accessed 2026-09-13. https://vintageking.com/quested
[^8]: B&H Photo Video, accessed 2026-09-13. https://www.bhphotovideo.com/c/buy/Shop-by-Brand-Quested/ci/4/phd/4291264223/N/4294255798
[^9]: B&H Photo Video, accessed 2026-09-13. https://www.bhphotovideo.com/c/product/1713748-REG/quested_cx8_passive_coaxial_2_way_8_1_10.html
[^10]: AWAVE, accessed 2026-09-13. https://awave.com.au/shop/monitoring/passive-monitors/quested-cx8-passive-coaxial-2-way-ceiling-monitor-single/
[^11]: Oceania Audio Sales, accessed 2026-09-13. https://oceaniaaudiosales.co.nz/products/amphion-two18-passive-two-way-studio-monitor-single
[^12]: Vintage King, accessed 2026-09-13. https://vintageking.com/amphion-two15-single
[^13]: ZenPro Audio, accessed 2026-09-13. https://www.zenproaudio.com/amphion-two15
[^14]: RSPE Audio Solutions, accessed 2026-09-13. https://www.rspeaudio.com/amphion-two15-passive-nearfield-studio-monitor