SB12PACR25-4-COAX
4" Aluminium Cone Coaxial
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Frequency response and impedance
Tweeter section
Level in dB (left axis) and impedance in ohm (right axis), 10 Hz to 20 kHz. The line on each switch above shows how its curve is drawn.
Woofer section
Level in dB (left axis) and impedance in ohm (right axis), 10 Hz to 20 kHz. The line on each switch above shows how its curve is drawn.
Features
- Vented reinforced plastic chassis
- Anodised aluminum cone
- Low damping rubber surround
- Large motor system
- Long stroke linear suspension
- Light weight CCAW voice coil
- Non-conducting fibreglass coil former
- Non-resonant long life lead wires
- Compact large surround dome tweeter
Features as listed by SB Acoustics. Full details on sbacoustics.com (opens the SB Acoustics website in a new tab)
Design files
SB12PACR25-4-COAX FRD and ZMA files, in one zip:
- Frequency responses at 0, 30 and 60 degrees for both parts (.frd)
- Impedance (.zma)
- A README and a note on how each curve was made
Plain text files for VituixCAD, XSim, REW and most other crossover tools.
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SB12PACR25-4-COAX FAQ
What are FRD and ZMA files?
An FRD file holds a driver's frequency response and a ZMA file its impedance, the two curves a crossover simulator needs. Plain text, one point per line.
Which software can open the SB12PACR25-4-COAX files?
VituixCAD, XSim and REW, and most other crossover tools that read plain text.
How was this data made?
It was digitised by Artisan Acoustics from the response and impedance graphs in the SB Acoustics datasheet, so it is not a measurement and not an official SB Acoustics file. Each curve is checked against its graph. The datasheet it came from and the conditions printed on it are in the ABOUT.txt note and in the header of each file inside the zip. Use the files at your own risk.
Why is the phase column zero?
The datasheets print level and impedance but not phase. If your simulator needs phase, derive minimum phase there.
Where can I buy the SB12PACR25-4-COAX in Singapore or Malaysia?
From Artisan Acoustics, the official SB Acoustics distributor for Singapore and East and West Malaysia. Message us on WhatsApp