Short answer: the XMechanik Mechano23 DIY. It ranks #6 of 63 bookshelf speakers by sound quality at $48; the Arendal 1961 Monitor ranks #7 and costs $1150, so there is not much of a tradeoff to weigh.
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. 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.
The case for the Arendal 1961 Monitor: A physically robust build the reviewer calls “a little bit of a tank,” delivering low compression, low distortion, and overall really good neutrality - one of the reviewer’s top 10 picks under $1,500 across roughly 250 speakers tested. The tradeoff: Bass rolls off around 70-80Hz, so it cannot be used as full-range mains for music without a subwoofer, and a sub is recommended for home theater use as well.
Buy the XMechanik Mechano23 DIY. It ranks higher for sound quality than the Arendal 1961 Monitor and costs less, so there is no real case for the other one.
Specifications Side By Side
| XMechanik Mechano23 DIY | Arendal 1961 Monitor | |
|---|---|---|
| Price | ~$48 each | $1150 |
| Ranked | #6 of 63 in Medium Size Bookshelf Speakers | #7 of 63 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 | 2 x 5.5" woofers, 28mm tweeter |
| Dimensions | 11.4"H x 6.9"W x 10.4"D (290 x 174 x 263 mm) (11.4 x 6.9 x 10.4 in) | 16.6"H x 6.4"W x 5.9"D (421.6 x 162.6 x 149.9 mm) |
| Sensitivity | 85.1dB @ 2.83V/1m (measured, Audio Science Review) | 85.9dB (measured average, Erin’s Audio Corner) |
| Bass Extension (-3dB) | 77.6Hz (measured, Audio Science Review) | 84Hz (measured, Erin’s Audio Corner) |
| Bass Extension (-10dB) | 42.4Hz (measured, Audio Science Review) | 60Hz (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 | - |
| Crossover Frequency | - | 1500Hz |
| Impedance | - | 4 ohms nominal (4.1 ohms minimum above 80Hz, measured by Erin’s Audio Corner) |
| Weight | - | 16 lbs / 7.25 kg each |
| Woofer Cabinet | - | sealed |
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The Two Speakers In Full
XMechanik Mechano23 DIY: ~$48 each Madisound (Tweeter) Madisound (Woofer)
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.
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) (11.4 x 6.9 x 10.4 in) |
| 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) |
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Arendal 1961 Monitor: $1150 Arendalsound
Pros: A physically robust build the reviewer calls “a little bit of a tank,” delivering low compression, low distortion, and overall really good neutrality - one of the reviewer’s top 10 picks under $1,500 across roughly 250 speakers tested. Works well both as home theater mains and as surrounds. Independent ASR Klippel measurements corroborate the low-distortion finding: THD at 86dB SPL/1m stays well below the reviewer’s audibility threshold, and even at 96dB SPL/1m it stays “far better than most bookshelves” thanks to the built-in high-pass filter that protects the woofers.
Cons: Bass rolls off around 70-80Hz, so it cannot be used as full-range mains for music without a subwoofer, and a sub is recommended for home theater use as well. Vertical radiation window is narrow, typical of MTM (mid-tweeter-mid) layouts - tighter than a standard two-way’s roughly ±20° - so a second home theater row sitting above or below the tweeter axis will hear a noticeably different tonal balance. ASR’s CEA2034 measurements show the response is elevated above 2kHz with resonant peaks around 3kHz and 9kHz, leading the reviewer to predict it will “likely sound bright.” Those same resonances show up as lingering ridges in the cumulative spectral decay (waterfall) at 96dB SPL/1m.
Full Arendal 1961 Monitor review and specifications →
| Bass Extension (-10dB) | 60Hz (measured, Erin's Audio Corner) |
|---|---|
| Bass Extension (-3dB) | 84Hz (measured, Erin's Audio Corner) |
| Crossover Frequency | 1500Hz |
| Dimensions | 16.6"H x 6.4"W x 5.9"D (421.6 x 162.6 x 149.9 mm) |
| Drivers | 2 x 5.5" woofers, 28mm tweeter |
| Impedance | 4 ohms nominal (4.1 ohms minimum above 80Hz, measured by Erin's Audio Corner) |
| Sensitivity | 85.9dB (measured average, Erin's Audio Corner) |
| Weight | 16 lbs / 7.25 kg each |
| Woofer Cabinet | sealed |
As an eBay Partner, we may be compensated if you make a purchase.
- Links
- Reviews, Comparisons and Sound Samples
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