Data quality

Live coverage and validation health for the bits driver database. We show the warts — this updates automatically after each daily scrape.

Updated daily · 26 Oct 2026, 01:38

Valid driver coverage

3,179+118 / 30d

LF drivers with validated Thiele/Small parameters

3,364Official datasheets94.3% of LF drivers have an official datasheet attached

+36 / 30d

1,260Traced response curves35.3% of LF drivers have a valid trace for their current datasheet

−36 / 30d

2,426With price data68.0% of LF drivers matched to a vendor listing

+438 / 30d

3,566LF drivers trackedAcross 58 manufacturers · 17,730 vendor listings

T/S validity

Quality dips when new scrapers land, then recovers as we clean up. This is the honest, fluctuating view.

Current composition252 open issues

Valid3,179

Warning356

Error31

Unchecked0

Quality by scraper

Per-manufacturer T/S validity, datasheet and response-curve coverage. Sort any column, or click a row to drill in.

52 manufacturers

Quality by scraper

Eighteen Sound	226	99.1%	2	100.0%	80.5%	100.0%	88.0%
B&C	223	100.0%	0	100.0%	20.2%	100.0%	89.7%
Dayton Audio	205	96.6%	7	100.0%	83.9%	100.0%	95.6%
Visaton	196	43.9%	110	100.0%	10.2%	100.0%	84.2%
FaitalPRO	188	100.0%	0	100.0%	98.4%	100.0%	95.7%
Celestion	148	66.2%	50	100.0%	56.1%	100.0%	77.7%
SB Acoustics	141	100.0%	0	100.0%	73.0%	100.0%	97.2%
CIARE	134	95.5%	6	99.3%	85.1%	100.0%	79.1%
Tang Band	134	96.3%	5	100.0%	93.3%	100.0%	31.3%
Wavecor	134	98.5%	2	100.0%	34.3%	100.0%	60.5%
Jensen	119	94.1%	7	100.0%	73.9%	100.0%	0.0%
PRV Audio	110	90.0%	11	97.3%	0.9%	100.0%	51.8%
Beyma	101	99.0%	1	100.0%	94.1%	100.0%	94.1%
Oberton	96	100.0%	0	96.9%	0.0%	100.0%	7.3%
Sica	94	96.8%	3	98.9%	0.0%	100.0%	60.6%
Eminence	92	95.7%	4	54.3%	0.0%	100.0%	85.9%
P.Audio	80	91.3%	7	100.0%	0.0%	100.0%	1.3%
PHL Audio	74	100.0%	0	100.0%	0.0%	0.0%	0.0%
HiVi	72	88.9%	8	88.9%	0.0%	100.0%	30.6%
Monacor	72	79.2%	15	98.6%	0.0%	100.0%	66.7%
Scanspeak	70	98.6%	1	100.0%	1.4%	100.0%	100.0%
REDCATT	67	100.0%	0	100.0%	0.0%	97.0%	85.1%
SEAS	67	89.6%	7	100.0%	0.0%	100.0%	91.0%
Lavoce	61	98.4%	1	18.0%	0.0%	98.4%	70.5%
Peerless	61	100.0%	0	100.0%	0.0%	100.0%	72.1%
SB Audience	46	89.1%	5	100.0%	0.0%	100.0%	95.7%
BMS	45	100.0%	0	48.9%	0.0%	100.0%	91.1%
RCF	45	100.0%	0	100.0%	0.0%	97.8%	82.2%
GRS	44	47.7%	23	93.2%	0.0%	100.0%	95.5%
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%
Kartesian	35	94.3%	2	97.1%	0.0%	97.1%	0.0%
Fane	32	100.0%	0	100.0%	0.0%	96.9%	28.1%
Markaudio	30	50.0%	15	80.0%	0.0%	100.0%	66.7%
Purifi	30	100.0%	0	100.0%	0.0%	100.0%	70.0%
Precision Devices	29	96.6%	1	96.6%	0.0%	79.3%	58.6%
Fostex	24	0.0%	24	87.5%	0.0%	100.0%	50.0%
Supravox	22	45.5%	12	0.0%	0.0%	100.0%	18.2%
Accuton	21	95.2%	1	100.0%	0.0%	100.0%	81.0%
ETON	21	28.6%	15	100.0%	0.0%	100.0%	100.0%
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%
Lii Audio	16	31.3%	11	0.0%	0.0%	100.0%	0.0%
BishopSound	15	100.0%	0	100.0%	0.0%	100.0%	80.0%
Fountek	6	66.7%	2	16.7%	0.0%	100.0%	83.3%
RS Speakers	5	100.0%	0	100.0%	0.0%	100.0%	40.0%
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%
VAS Audio	2	100.0%	0	100.0%	0.0%	100.0%	100.0%
E J Jordan	1	100.0%	0	0.0%	0.0%	100.0%	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.

33 vendors

Coverage by vendor

SoundImports	1,155	81.8%	210	76	23
Lean Audio	1,062	72.0%	297	155	72
Blue Aran	889	73.8%	233	14	7
Parts Express	856	70.3%	254	8	7
AudioKit	629	57.4%	268	305	45
RumoH	592	41.9%	344	13	2
Thomann	477	67.5%	155	75	20
RG Sound	362	27.4%	263	0	4
Speaker en Co	346	27.5%	251	0	0
Lautsprechershop	332	52.4%	158	0	2
Willys-Hifi	232	83.2%	39	34	2
LTT	226	20.4%	180	0	4
Spectrum Audio	223	41.3%	131	0	2
Hifisound	216	10.2%	194	0	6
Lean Business	194	30.9%	134	629	1
Visaton Shop	177	92.7%	13	0	0
Audiophonics	132	70.5%	39	168	0
SpeakerCase	107	52.3%	51	56	0
Beyma Deutschland	92	82.6%	16	0	0
Wilmslow Audio	89	68.5%	28	1	10
Hifi Collective	51	27.4%	37	0	0
Impact Audio	45	91.1%	4	0	0
Boomtown	29	89.7%	3	504	57
Lautsprecher Berlin	26	80.8%	5	31	0
BishopSound	16	81.3%	3	2	0
KJF Audio	9	100.0%	0	0	0
VAS Audio	2	100.0%	0	0	0
Audio Video Parts	0	–	0	937	0
Lautsprecher-Technik	0	–	0	644	0
Blue Music	0	–	0	560	0
JP Leisure	0	–	0	751	0
Lautsprecherteile	0	–	0	155	0
Falcon Acoustics	0	–	0	229	0

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.