Short answer: the XMechanik Mechano23 DIY. It ranks #6 of 87 bookshelf speakers by sound quality at $48; the Q Acoustics 5020 ranks #73 and costs $1199, which makes this an easy call rather than a real tradeoff.
What the XMechanik Mechano23 DIY offers: The bass alignment is unusually well damped, with a measured Q of 0.336, among the lowest of any speaker in this catalog, so the -3dB point at 77.6Hz rolls off cleanly instead of building into a resonant bump the way many small ported designs do. On axis deviation measures a tight 0.195dB average, and Audio Science Review’s independent Klippel NFS review called the predicted in room response nearly perfect, with directivity matching that beats some commercial designs costing many times more, all from about $200 in parts. Watch for: This is a true DIY project. There is no assembled unit to buy, drivers come from Madisound, the crossover kit comes separately from EZ Speaker Solutions, and the birch plywood cabinet has to be built and finished by hand. Listening window smoothness measures a moderate 0.47 and the sound power directivity index has more variation (standard deviation 4.02) than the tightest speakers in this catalog, so off axis energy isn’t quite as evenly controlled as the excellent on axis figures suggest.
What the Q Acoustics 5020 offers: Attractively finished compact standmount with a 5-inch Continuous Curved Cone woofer and carefully engineered cabinet details. Erin found distortion well controlled at normal levels: below 1% down to about 50Hz at 86dB/1m. Its 87dB measured sensitivity is unremarkable rather than hard to drive, and it maintains acceptable output for typical 80-85dB listening. The rear port can be plugged for placement flexibility. Watch for: Erin found the tonal balance distinctly too crisp, forward and treble-heavy: the top end is roughly 3-5dB elevated while the 1-3kHz region is recessed, so vocals change level unnaturally as they move through their range. The shallow woofer crossover and steeper tweeter slope contribute to the off-axis discontinuity, while the port has a strong 1kHz resonance. Bass is limited: Erin measured F3 103Hz and F10 48Hz; at 96dB distortion reaches about 3% by 100Hz, and he bottomed the woofer when pushed hard. He preferred the less-expensive 3020i’s linearity and did not recommend the 5020 for neutral listening without EQ.
Buy the XMechanik Mechano23 DIY. It ranks higher for sound quality than the Q Acoustics 5020 and costs less, so the other one has nothing left to offer.
If sound quality matters at all to you, skip the Q Acoustics 5020. It ranks near the bottom of the 87 bookshelf speakers, so look higher up the list instead.
Looking for alternatives? See the complete Passive Home rankings.
Specifications Side By Side
| XMechanik Mechano23 DIY | Q Acoustics 5020 | |
|---|---|---|
| Price | $200 per pair DIY parts | $1,199.00 per pair |
| Ranked | #6 of 87 in Medium Size Bookshelf Speakers | #73 of 87 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 | 5" (125mm) C3 mid/bass driver, 1" (25mm) tweeter |
| Dimensions | 11.4"H x 6.9"W x 10.4"D (290 x 174 x 263 mm) | 11.2"H x 7.1"W x 11.5"D |
| Sensitivity | 85.1dB @ 2.83V/1m (measured, Audio Science Review) | 87.1dB (2.83V/1m, measured, Erin's Audio Corner; 87.9dB manufacturer specified) |
| Bass Extension (-3dB) | 77.6Hz (measured, Audio Science Review) | 103Hz (measured, Erin's Audio Corner) |
| Bass Extension (-10dB) | 42.4Hz (measured, Audio Science Review) | 48Hz (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 | 4.70 | 2.81 |
| Spinorama Preference Score with Perfect Sub | 7.16 | 5.73 |
| Crossover Frequency | - | 2.5kHz (manufacturer specified) |
| Weight | - | 15.4 lbs (7.0 kg) each |
| Impedance | - | 6 ohms nominal, 3.3 ohms minimum (manufacturer specified) |
| Frequency Response | - | 53Hz - 30kHz (-6dB, manufacturer specified) |
| Recommended Power | - | 25W - 100W (manufacturer specified) |
| Woofer Cabinet | - | rear-ported |
Related Speaker Comparisons
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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
XMechanik Mechano23 DIY: $200 per pair DIY parts Madisound (Tweeter) Madisound (Woofer) eBay
Pros: The bass alignment is unusually well damped, with a measured Q of 0.336, among the lowest of any speaker in this catalog, so the -3dB point at 77.6Hz rolls off cleanly instead of building into a resonant bump the way many small ported designs do. On axis deviation measures a tight 0.195dB average, and Audio Science Review’s independent Klippel NFS review called the predicted in room response nearly perfect, with directivity matching that beats some commercial designs costing many times more, all from about $200 in parts. Measured bass extension of 77.6Hz (-3dB), with a measured sensitivity of 85.1dB.
Cons: This is a true DIY project. There is no assembled unit to buy, drivers come from Madisound, the crossover kit comes separately from EZ Speaker Solutions, and the birch plywood cabinet has to be built and finished by hand. Listening window smoothness measures a moderate 0.47 and the sound power directivity index has more variation (standard deviation 4.02) than the tightest speakers in this catalog, so off axis energy isn’t quite as evenly controlled as the excellent on axis figures suggest.
Full XMechanik Mechano23 DIY review and specifications →
| Bass Extension (-10dB) | 42.4Hz (measured, Audio Science Review) |
|---|---|
| Bass Extension (-3dB) | 77.6Hz (measured, Audio Science Review) |
| Cabinet Material | 18mm Baltic birch plywood |
| Country | Design origin: United States (ASR forum); assembled by buyer |
| Dimensions | 11.4"H x 6.9"W x 10.4"D (290 x 174 x 263 mm) |
| Drivers | Scan-Speak Discovery H2606/9200 1" horn loaded textile dome tweeter, SB Acoustics SB13PFCR25-4 5" fiber cone woofer |
| Enclosure | ported |
| Port Tuning | Approximately 45Hz |
| Sensitivity | 85.1dB @ 2.83V/1m (measured, Audio Science Review) |
| Spinorama Preference Score | 4.70 |
| Spinorama Preference Score with Perfect Sub | 7.16 |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
- XMechanik Mechano23 DIY vs Ascend Acoustics HTM-200SE2
- XMechanik Mechano23 DIY vs Arendal 1961 Monitor
- XMechanik Mechano23 DIY vs KEF LS50 Meta
- XMechanik Mechano23 DIY vs Ascend Sierra 1 v2
- XMechanik Mechano23 DIY vs Philharmonic Ceramic Mini
- XMechanik Mechano23 DIY vs Ascend Acoustics Luna V2 Mini-Monitor Titan
- XMechanik Mechano23 DIY vs Aalto Speakers Aalto 1 EVO
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Q Acoustics 5020: $1,199.00 per pair Amazon eBay
Pros: Attractively finished compact standmount with a 5-inch Continuous Curved Cone woofer and carefully engineered cabinet details. Erin found distortion well controlled at normal levels: below 1% down to about 50Hz at 86dB/1m. Its 87dB measured sensitivity is unremarkable rather than hard to drive, and it maintains acceptable output for typical 80-85dB listening. The rear port can be plugged for placement flexibility. Measured bass extension of 103Hz (-3dB), with a measured sensitivity of 87.1dB.
Cons: Erin found the tonal balance distinctly too crisp, forward and treble-heavy: the top end is roughly 3-5dB elevated while the 1-3kHz region is recessed, so vocals change level unnaturally as they move through their range. The shallow woofer crossover and steeper tweeter slope contribute to the off-axis discontinuity, while the port has a strong 1kHz resonance. Bass is limited: Erin measured F3 103Hz and F10 48Hz; at 96dB distortion reaches about 3% by 100Hz, and he bottomed the woofer when pushed hard. He preferred the less-expensive 3020i’s linearity and did not recommend the 5020 for neutral listening without EQ.
Full Q Acoustics 5020 review and specifications →
| Bass Extension (-10dB) | 48Hz (measured, Erin's Audio Corner) |
|---|---|
| Bass Extension (-3dB) | 103Hz (measured, Erin's Audio Corner) |
| Crossover Frequency | 2.5kHz (manufacturer specified) |
| Dimensions | 11.2"H x 7.1"W x 11.5"D |
| Drivers | 5" (125mm) C3 mid/bass driver, 1" (25mm) tweeter |
| Frequency Response | 53Hz - 30kHz (-6dB, manufacturer specified) |
| Impedance | 6 ohms nominal, 3.3 ohms minimum (manufacturer specified) |
| Recommended Power | 25W - 100W (manufacturer specified) |
| Sensitivity | 87.1dB (2.83V/1m, measured, Erin's Audio Corner; 87.9dB manufacturer specified) |
| Spinorama Preference Score | 2.81 |
| Spinorama Preference Score with Perfect Sub | 5.73 |
| Weight | 15.4 lbs (7.0 kg) each |
| Woofer Cabinet | rear-ported |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
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