Same cabinet size and woofer. The S6B has a Purifi tweeter and larger side-mounted passive radiators, for slightly deeper bass (30 Hz instead of 32 Hz at −6 dB).

What amplifier does the S6B need?

A powerful one. With 82 dB sensitivity and a 4-ohm load, it suits an amplifier with plenty of current; AsciLab specifies up to 500 W.

AsciLab S6B

Name: AsciLab S6B
Brand: AsciLab
SKU: ascilab-s6b
Price: 4790.00 CHF
Availability: InStock

All-Purifi 2-way with side passive radiators, down to 30 Hz.

The S6B is AsciLab's top passive speaker, built around Purifi drivers: a 6.5" aluminium woofer, a tweeter in a waveguide developed with finite element analysis, and two side-mounted 8" passive radiators. The non-magnetic crossover is tuned on a Klippel Near-Field Scanner. It reaches 30 Hz at −6 dB.

CHF 4'790 per pair

Incl. import & VAT

Delivery quoted separately, or free pickup in Lutry by appointment.

Black

What it solves

Engineered to deliver accurate sound in real rooms, not just anechoic chambers.

Purifi throughout

Tweeter, woofer and passive radiators all come from Purifi, the Danish maker of very low-distortion drivers.

Waveguide designed by simulation

The waveguide and phase plug were developed with finite element analysis to control dispersion and reduce internal resonance.

Side passive radiators

Two 8" passive radiators on the sides take the bass to 30 Hz (−6 dB) and 26 Hz (−10 dB), without port noise.

Interested in the AsciLab S6B?

Experience it in person or get a personalised quote.

Specifications

Type	Passive 2-way with two passive radiators
Tweeter	Purifi, with FEA-designed waveguide
Woofer	6.5" Purifi aluminium cone
Passive radiators	2 × 8" Purifi, side-mounted
Crossover	1 kHz, 4th order
Sensitivity	82 dB (2.83 V / 1 m)
Impedance	4 Ω
Frequency response	−3 dB at 41 Hz, −6 dB at 30 Hz, −10 dB at 26 Hz
Maximum SPL	102 dB
Recommended amplifier	Up to 500 W
Dimensions (H × W × D)	405 × 220 × 300 mm
Weight	13.5 kg per speaker
Finishes	Black, white, grey (all matte)