4-inch passive radiator · SB12 series
SB Acoustics SB12PACR-00
£20.52
Willys-Hifi · All 2 offers
Simulator support pending: 00 Simulator import needs complete passive-radiator parameters.
- Fs
- 33Hz
- Sd
- 50cm²
- Xmax
- –
- Mms
- 19g
- Vas
- 4L
- Qms
- 12.4
SB Acoustics SB12PACR-00 is a 4-inch passive radiator. The source-backed mechanical data includes Fs 33 Hz, Vas 4.3 L. bits tracks UK, EU and US shop prices, price movement, and datasheet links, with a current best price of £20.52.
Partial source evidence
No automated T/S validation result is published for this record yet.
- Manufacturer page linked
- Datasheet linked
- Canonical units normalized for comparison
Thiele/Small
- Fs
- 33Hz
- Qms
- 12.4
- Vas
- 4.3L
Motor and cone
- Sd
- 50cm²
- Mms
- 19g
Size and mounting
- Weight
- 78kg
Other published values
- Cms
- 1.21mm/N
Everything else SB Acoustics lists
LF · Primary · 4″
- Fs
- 33Hz
- Sd
- 50cm²
- Cms
- 1.21mm/N
- Mms
- 19g
- Qms
- 12.4
- Vas
- 4.3L
- Weight
- 78kg
- SoundImports5.0 out of 52 ratings · Checked 25 Oct 2026Read reviews on SoundImports
Each shop collects its own ratings. Bits shows them as published and doesn't verify them.
| Shop | Price | Against the lowest | Stock | Link |
|---|---|---|---|---|
Willys-Hifi | £20.52, the lowest price | Stock not listed | Visit shop at Willys-Hifi | |
SoundImports Import VAT and duty may apply | £16.70 | Back order | Visit shop at SoundImports |
Best price over time
Tracked since 19 Oct