Short answer: the XMechanik Mechano23 DIY. It ranks #6 of 179 bookshelf speakers by sound quality, rated 4.4/5, at $200. The Neumi BS5 ranks #38, rated 3.8/5, at $139.99, $60.01 cheaper, not enough of a saving to outweigh the sound-quality gap.
The XMechanik Mechano23 DIY is the more accurate option. A DIY bookshelf design with exceptionally accurate sound that rivals far pricier speakers for a modest parts cost. Its measured preference score, a predictor of how neutral it sounds, is 5.42 against 3.60 for the Neumi BS5. The catch: This is a true DIY project.
The Neumi BS5 is the deeper-bass option. Budget bookshelf speakers with accurate, punchy sound that work with any ordinary receiver, an exceptional value. Its bass reaches about 64Hz before falling 3dB, against 77.6Hz for the XMechanik Mechano23 DIY. The tradeoff: Erin measured F3 at 64Hz, so kick-drum punch should not be mistaken for deep-bass extension.
Buy the XMechanik Mechano23 DIY. It is rated higher for sound quality, and the $60.01 you would save on the Neumi BS5 does not close the gap.
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Prices on this page were last checked November 11, 2026 at 3:26 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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Specifications Side By Side
| XMechanik Mechano23 DIY | Neumi BS5 | |
|---|---|---|
| Price | $200 per pair DIY parts | $139.99 per pair |
| Ranked | #6 of 179 in Medium Size Bookshelf Speakers | #38 of 179 in Medium Size Bookshelf Speakers |
| Enclosure | ported | - |
| Drivers | Scan-Speak Discovery H2606/9200 1” horn loaded textile dome tweeter, SB Acoustics SB13PFCR25-4 5” fiber cone woofer | 1” silk-dome tweeter; 5” fiberglass woofer |
| Dimensions | 11.4”H x 6.9”W x 10.4”D (290 x 174 x 263 mm) | 10.6”H x 7.2”W x 8.5”D (269.2 x 182.9 x 215.9 mm) |
| Sensitivity | 85.1dB @ 2.83V/1m (measured, Audio Science Review) | Approximately 84dB/2.83V/1m (measured, Erin’s Audio Corner) |
| Bass Extension (-3dB) | 77.6Hz (measured, Audio Science Review) | 64Hz (measured, Erin’s Audio Corner) |
| Bass Extension (-10dB) | 42.4Hz (measured, Audio Science Review) | 41.0Hz (measured, Erin’s Audio Corner) |
| Port Tuning | Approximately 45Hz | - |
| Cabinet Material | 18mm Baltic birch plywood | - |
| Country | Design origin: United States (ASR forum); assembled by buyer | - |
| Spinorama Preference Score | 5.42 | 3.60 |
| Spinorama Preference Score with Perfect Sub | 7.88 | 6.12 |
| Impedance | 4.1 ohms nominal (measured, ASR) | 4.6 ohms minimum; approximately 6 ohms nominal (measured, Erin’s Audio Corner) |
| DIY Kit | Yes | No |
| Woofer Cabinet | - | ported, front |
| Weight | - | 7.1 lbs (3.2 kg) each |
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