Short answer: the AsciLab C8C for better sound quality, the Neumann KH 150 for the lower price. The AsciLab C8C ranks #1 of 67 powered bookshelf speakers at $5799. The Neumann KH 150 ranks #8 at $3398, $2401 cheaper.
What the AsciLab C8C offers: ASR’s revised measurement combines an 8.02 ideal-subwoofer preference score with a 1.7dB response span from 300Hz to 5kHz, supporting highly even vocal and instrumental balance. Bass reaches 30.8Hz at -3dB and 23.4Hz at -6dB, giving substantial low-end reach without an added subwoofer. Watch for: The result applies to the revised measured configuration; confirm that the speaker’s tuning matches it. Each cabinet weighs about 27.5kg and needs a substantial stand. Deep extension and excellent tonality do not guarantee unlimited bass output or eliminate the need to adjust placement.
What the Neumann KH 150 offers: An exceptionally tight 1.0dB response span from 300Hz to 5kHz supports neutral vocals and instruments. The measured ideal-subwoofer score is 7.58, with -3dB bass extension to 39.6Hz. DSP and optional MA 1 alignment offer useful control over room-related response errors. Watch for: A two-way nearfield monitor cannot match the largest three-way systems for deep-bass output at distance. Keep the tweeter near ear height to avoid crossover-related changes off the vertical axis. MA 1 calibration requires additional equipment, and studio connections are less convenient than a consumer streaming system.
Buy the AsciLab C8C when sound quality outweighs the price for you, and the Neumann KH 150 when the price outweighs sound quality instead.
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Specifications Side By Side
| AsciLab C8C | Neumann KH 150 | |
|---|---|---|
| Price | $6,200 per pair | $3,398 per pair |
| Ranked | #1 of 67 in Large Size Powered Bookshelf Speakers | #8 of 67 in Large Size Powered Bookshelf Speakers |
| Enclosure | sealed | ported |
| Drivers | 1" alumina ceramic dome tweeter with waveguide, 2x 6" alumina ceramic midrange/woofers, 2x 8" side mounted opposed cardioid subwoofers | 1" tweeter, 6.5" woofer |
| Dimensions | 22"H x 10"W x 13.8"D (560 x 254 x 350 mm) | 13.6"H x 8.9"W x 10.7"D (345 x 225 x 273 mm) |
| Weight | 60.6 lbs (27.5 kg) each | 17.6 lbs (8.0 kg) each |
| Amplifier Power | 600W total (100W tweeter, 250W midrange, 250W subwoofer) | 245W total (145W woofer, 100W tweeter, 10% THD+N) |
| Bass Extension (-6dB) | 23.4Hz (measured, Audio Science Review) | - |
| Bass Extension (-3dB) | 30.8Hz (measured, Audio Science Review) | 39.6Hz (measured, Audio Science Review) |
| Bass Extension (-10dB) | 20.5Hz (measured, Audio Science Review) | 34.2Hz (measured, Audio Science Review) |
| Crossover Frequency | 150Hz, 1.2kHz | 1.7kHz |
| Warranty | 2 years | 2 years |
| Country | South Korea | Germany |
| Spinorama Preference Score | 7.25 | 5.84 |
| Spinorama Preference Score with Perfect Sub | 8.02 | 7.58 |
| Frequency Response | - | 39Hz-20.4kHz +/-3dB |
| Maximum SPL | - | 118.7dB @ 1m half space (manufacturer specified) |
Related Speaker Comparisons
How AsciLab C8C compares with other leading options:
- AsciLab C8C vs Mesanovic CDM65
- AsciLab C8C vs Buchardt A10
- AsciLab C8C vs GGNTKT M1
- AsciLab C8C vs Neumann KH 310 A
- AsciLab C8C vs HEDD Type 20 MK2
Prices on this page were last checked September 16, 2026 at 12:41 AM UTC. Product prices and availability are accurate as of that date/time and are subject to change; the price and availability shown on Amazon at the time of purchase will apply to the purchase of this product.
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The Two Speakers In Full
AsciLab C8C: $6,200 per pair Audiophonics eBay
Pros: ASR’s revised measurement combines an 8.02 ideal-subwoofer preference score with a 1.7dB response span from 300Hz to 5kHz, supporting highly even vocal and instrumental balance. Bass reaches 30.8Hz at -3dB and 23.4Hz at -6dB, giving substantial low-end reach without an added subwoofer. Measured bass extension of 30.8Hz (-3dB).
Cons: The result applies to the revised measured configuration; confirm that the speaker’s tuning matches it. Each cabinet weighs about 27.5kg and needs a substantial stand. Deep extension and excellent tonality do not guarantee unlimited bass output or eliminate the need to adjust placement.
Full AsciLab C8C review and specifications →
| Amplifier Power | 600W total (100W tweeter, 250W midrange, 250W subwoofer) |
|---|---|
| Bass Extension (-10dB) | 20.5Hz (measured, Audio Science Review) |
| Bass Extension (-3dB) | 30.8Hz (measured, Audio Science Review) |
| Bass Extension (-6dB) | 23.4Hz (measured, Audio Science Review) |
| Country | South Korea |
| Crossover Frequency | 150Hz, 1.2kHz |
| Dimensions | 22"H x 10"W x 13.8"D (560 x 254 x 350 mm) |
| Drivers | 1" alumina ceramic dome tweeter with waveguide, 2x 6" alumina ceramic midrange/woofers, 2x 8" side mounted opposed cardioid subwoofers |
| Enclosure | sealed |
| Spinorama Preference Score | 7.25 |
| Spinorama Preference Score with Perfect Sub | 8.02 |
| Warranty | 2 years |
| Weight | 60.6 lbs (27.5 kg) each |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
Neumann KH 150: $3,398 per pair B&H Photo Video eBay
Pros: An exceptionally tight 1.0dB response span from 300Hz to 5kHz supports neutral vocals and instruments. The measured ideal-subwoofer score is 7.58, with -3dB bass extension to 39.6Hz. DSP and optional MA 1 alignment offer useful control over room-related response errors. Measured bass extension of 39.6Hz (-3dB).
Cons: A two-way nearfield monitor cannot match the largest three-way systems for deep-bass output at distance. Keep the tweeter near ear height to avoid crossover-related changes off the vertical axis. MA 1 calibration requires additional equipment, and studio connections are less convenient than a consumer streaming system.
Full Neumann KH 150 review and specifications →
| Amplifier Power | 245W total (145W woofer, 100W tweeter, 10% THD+N) |
|---|---|
| Bass Extension (-10dB) | 34.2Hz (measured, Audio Science Review) |
| Bass Extension (-3dB) | 39.6Hz (measured, Audio Science Review) |
| Country | Germany |
| Crossover Frequency | 1.7kHz |
| Dimensions | 13.6"H x 8.9"W x 10.7"D (345 x 225 x 273 mm) |
| Drivers | 1" tweeter, 6.5" woofer |
| Enclosure | ported |
| Frequency Response | 39Hz-20.4kHz +/-3dB |
| Maximum SPL | 118.7dB @ 1m half space (manufacturer specified) |
| Spinorama Preference Score | 5.84 |
| Spinorama Preference Score with Perfect Sub | 7.58 |
| Warranty | 2 years |
| Weight | 17.6 lbs (8.0 kg) each |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons