Short answer: the Miller & Kreisel IW150. It ranks #17 of 28 in-wall speakers by sound quality, rated 3.6/5, at $4,998. The Revel W990 ranks #19, rated 3.5/5, at $4,239.90, $758.10 cheaper, not enough of a saving to outweigh the sound-quality gap.
The case for the Miller & Kreisel IW150: An in-wall speaker with three tweeters beside two woofers, designed to spread sound evenly across a room from one opening. The catch: Bass is thin: measured -3dB is 95.2Hz and -6dB is 82.0Hz, and Miller & Kreisel rates it only to 80Hz, so a subwoofer is required, and even with a perfect subwoofer the score reaches only 6.32.
The Revel W990 is the more accurate, deeper-bass pick. A three way in-wall speaker with very deep bass for its type and room tuning controls for flexible placement. Its measured preference score, a predictor of how neutral it sounds, is 3.60 against 2.88 for the Miller & Kreisel IW150. Its bass reaches about 32.2Hz before falling 3dB, against 95.2Hz for the Miller & Kreisel IW150. Watch for: Its measured preference score is only 3.6, or 5.09 with a perfect subwoofer, because the midrange is uneven: on-axis deviation is high (0.86 normalized deviation on axis, 0.69 in the listening window) and on-axis smoothness is just 0.34.
Buy the Miller & Kreisel IW150. It is rated higher for sound quality, and the $758.10 saving on the Revel W990 is not enough to make up the difference.
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Specifications Side By Side
| Miller & Kreisel IW150 | Revel W990 | |
|---|---|---|
| Price | $4,998 per pair | $4,239.90 per pair |
| Ranked | #17 of 28 in In-Wall & In-Ceiling Speakers | #19 of 28 in In-Wall & In-Ceiling Speakers |
| Drivers | 2x 5.25” polypropylene bass/midrange drivers, 3x 1” soft fabric dome tweeters | 9” micro-ceramic composite (MCC) woofer, 3.5” midrange, 1” aluminum dome tweeter with waveguide (3-way) |
| Enclosure | In-wall | In-wall, passive |
| Mounting Cutout | 288W x 331H mm | 318W x 486H mm |
| Dimensions | 13.9”H x 12.2”W (354 x 311 mm) baffle (95mm mounting depth) | 20.7”H x 13.9”W x 4.1”D (527 x 352 x 103 mm) (95mm mounting depth) |
| Weight | 18.7 lbs (8.5 kg) | 17 lbs (7.7 kg) |
| Sensitivity | 90dB | 85.9dB (measured, Audio Science Review) |
| Impedance | 4 ohms | - |
| Power Handling | 25-400W recommended amplifier power | 10-200W RMS recommended amplifier power |
| Frequency Response | 80Hz-20kHz +/-3dB (manufacturer) | - |
| Bass Extension (-3dB) | 95.2Hz (measured, Erin’s Audio Corner) | 32.2Hz (measured, Audio Science Review) |
| Bass Extension (-10dB) | 68.7Hz (measured, Erin’s Audio Corner) | 22.4Hz (measured, Audio Science Review) |
| Spinorama Preference Score | 2.88 | 3.60 |
| Spinorama Preference Score with Perfect Sub | 6.32 | 5.09 |
| DIY Kit | No | No |
| Warranty | - | 5 years |
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