Data quality
Live coverage and validation health for the bits driver database. We show the warts — this updates automatically after each daily scrape.
LF drivers with validated Thiele/Small parameters
93.0% of LF drivers have an official datasheet attached
36.1% of LF drivers have a valid trace for their current datasheet
54.7% of LF drivers matched to a vendor listing
Across 49 manufacturers · 8,996 vendor listings
T/S validity
Quality dips when new scrapers land, then recovers as we clean up. This is the honest, fluctuating view.
Quality by scraper
Per-manufacturer T/S validity, datasheet and response-curve coverage. Sort any column, or click a row to drill in.
| Manufacturer | LF drivers | Valid rate | Issues | Datasheets | Traced | Images | Vendor coverage |
|---|---|---|---|---|---|---|---|
| Dayton Audio | 266 | 78.2% | 58 | 98.5% | 71.8% | 100.0% | 83.1% |
| Visaton | 264 | 57.6% | 112 | 100.0% | 20.1% | 100.0% | 37.9% |
| B&C | 209 | 100.0% | 0 | 99.0% | 21.5% | 100.0% | 87.6% |
| Tang Band | 172 | 87.2% | 22 | 100.0% | 86.0% | 98.8% | 15.1% |
| Celestion | 150 | 65.3% | 52 | 100.0% | 55.3% | 100.0% | 75.3% |
| Eighteen Sound | 141 | 100.0% | 0 | 100.0% | 100.0% | 100.0% | 80.8% |
| CIARE | 134 | 87.3% | 17 | 99.3% | 81.3% | 100.0% | 73.1% |
| Wavecor | 134 | 98.5% | 2 | 100.0% | 39.6% | 29.9% | 5.2% |
| Jensen | 119 | 94.1% | 7 | 100.0% | 73.9% | 100.0% | 0.0% |
| FaitalPRO | 118 | 100.0% | 0 | 100.0% | 100.0% | 100.0% | 98.3% |
| Monacor | 116 | 80.2% | 23 | 91.4% | 0.0% | 100.0% | 25.0% |
| PRV Audio | 108 | 88.0% | 13 | 100.0% | 0.0% | 100.0% | 52.8% |
| Beyma | 103 | 97.1% | 3 | 100.0% | 92.2% | 100.0% | 50.5% |
| SB Acoustics | 98 | 100.0% | 0 | 100.0% | 99.0% | 100.0% | 100.0% |
| Oberton | 94 | 100.0% | 0 | 98.9% | 0.0% | 100.0% | 7.5% |
| HiVi | 83 | 75.9% | 20 | 81.9% | 0.0% | 100.0% | 31.3% |
| Peerless | 83 | 94.0% | 5 | 100.0% | 0.0% | 100.0% | 50.6% |
| P.Audio | 79 | 92.4% | 6 | 100.0% | 0.0% | 100.0% | 1.3% |
| BMS | 74 | 68.9% | 23 | 0.0% | 0.0% | 100.0% | 73.0% |
| Scanspeak | 70 | 98.6% | 1 | 100.0% | 1.4% | 100.0% | 100.0% |
| Eminence | 69 | 95.7% | 3 | 95.7% | 0.0% | 95.7% | 97.1% |
| Lavoce | 69 | 98.6% | 1 | 15.9% | 0.0% | 100.0% | 69.6% |
| SEAS | 67 | 74.6% | 17 | 100.0% | 0.0% | 100.0% | 47.8% |
| SB Audience | 47 | 93.6% | 3 | 100.0% | 0.0% | 100.0% | 95.7% |
| RCF | 45 | 100.0% | 0 | 100.0% | 0.0% | 97.8% | 77.8% |
| GRS | 44 | 47.7% | 23 | 93.2% | 0.0% | 100.0% | 93.2% |
| Acoustic Elegance | 40 | 100.0% | 0 | 95.0% | 0.0% | 100.0% | 0.0% |
| Morel | 40 | 82.5% | 7 | 95.0% | 0.0% | 100.0% | 87.5% |
| Sica | 37 | 100.0% | 0 | 100.0% | 0.0% | 100.0% | 37.8% |
| Kartesian | 36 | 88.9% | 4 | 100.0% | 0.0% | 100.0% | 0.0% |
| Precision Devices | 30 | 93.3% | 2 | 96.7% | 0.0% | 80.0% | 60.0% |
| Purifi | 30 | 100.0% | 0 | 100.0% | 0.0% | 100.0% | 63.3% |
| Markaudio | 29 | 65.5% | 10 | 79.3% | 0.0% | 100.0% | 48.3% |
| Fostex | 24 | 0.0% | 24 | 87.5% | 0.0% | 100.0% | 41.7% |
| Fane | 23 | 100.0% | 0 | 100.0% | 0.0% | 95.7% | 56.5% |
| Supravox | 22 | 45.5% | 12 | 0.0% | 0.0% | 100.0% | 0.0% |
| Accuton | 21 | 95.2% | 1 | 100.0% | 0.0% | 100.0% | 66.7% |
| ETON | 21 | 28.6% | 15 | 100.0% | 0.0% | 100.0% | 0.0% |
| Volt | 21 | 28.6% | 15 | 100.0% | 0.0% | 100.0% | 100.0% |
| Audio Technology | 18 | 100.0% | 0 | 100.0% | 0.0% | 100.0% | 0.0% |
| BishopSound | 18 | 94.4% | 1 | 94.4% | 44.4% | 100.0% | 83.3% |
| Lii Audio | 16 | 31.3% | 11 | 0.0% | 0.0% | 100.0% | 0.0% |
| Fountek | 6 | 66.7% | 2 | 16.7% | 0.0% | 100.0% | 83.3% |
| Cube Audio | 4 | 100.0% | 0 | 0.0% | 0.0% | 100.0% | 0.0% |
| CSS Audio | 3 | 0.0% | 3 | 0.0% | 0.0% | 0.0% | 33.3% |
| JBL Professional | 3 | 0.0% | 3 | 100.0% | 0.0% | 100.0% | 33.3% |
| Radian Audio | 3 | 66.7% | 1 | 66.7% | 0.0% | 100.0% | 0.0% |
| E J Jordan | 1 | 100.0% | 0 | 0.0% | 0.0% | 100.0% | 0.0% |
| PHL Audio | 1 | 100.0% | 0 | 100.0% | 0.0% | 0.0% | 0.0% |
Coverage by vendor
Match coverage for LF driver listings classified at scrape time. Listings without category evidence are excluded from the rate, not guessed. Click a row for the per-manufacturer split.
| Vendor | LF listings | Match rate | Unmatched | Unclassified | Parse fails |
|---|---|---|---|---|---|
| soundimports | 1,144 | 67.1% | 376 | 78 | 30 |
| bluearan | 888 | 60.8% | 348 | 14 | 7 |
| partsexpress | 852 | 58.8% | 351 | 8 | 6 |
| thomann | 420 | 58.1% | 176 | 96 | 20 |
| willyshifi | 194 | 85.0% | 29 | 112 | 2 |
| leanaudio | 165 | 62.4% | 62 | 1,265 | 72 |
| hificollective | 51 | 27.4% | 37 | 0 | 0 |
| impactaudio | 39 | 94.9% | 2 | 0 | 0 |
| bishopsound | 16 | 81.3% | 3 | 2 | 0 |
| kjfaudio | 9 | 100.0% | 0 | 0 | 0 |
| leanbusiness | 0 | – | 0 | 997 | 1 |
| jpleisure | 0 | – | 0 | 751 | 0 |
| wilmslowaudio | 0 | – | 0 | 126 | 10 |
Methodology: figures are captured as a daily snapshot over the full database. For LF drivers, “valid” means Thiele/Small parameters passed automated validation; for passive radiators, which have no electrical motor, “complete” means the full mechanical set (Fs, Qms, Mms, Cms, Vas, Sd, Xmax) is present; for compression drivers, “complete” means the comparable core (impedance, power, sensitivity, frequency range) is present. The vendor table's match rate counts only listings whose component type was captured at scrape time for the selected category — unclassified listings are excluded rather than guessed from titles. The hero “% vendor match” series remains the global all-listings match rate for trend continuity.