What amplifier does the C6B need?

AsciLab recommends 50 to 250 W. The impedance dips to 2.6 ohms around 200 Hz, so choose an amplifier that is stable into low loads.

The A6B has a Purifi woofer and two passive radiators: it goes deeper (32 Hz instead of 41 Hz at −6 dB) and plays louder. The C6B costs about a third of the price.

AsciLab C6B

Name: AsciLab C6B
Brand: AsciLab
SKU: ascilab-c6b
Price: 1090.00 CHF
Availability: InStock

Ceramic tweeter and woofer, passive radiator, 41 Hz from a compact box.

The C6B pairs a 1" alumina-ceramic tweeter in a waveguide with a 6" alumina-ceramic woofer and a 5×8" passive radiator. The fourth-order crossover at 1.1 kHz is tuned on a Klippel Near-Field Scanner, and AudioScienceReview recommended the result.

CHF 1'090 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.

Alumina-ceramic drivers

Very rigid cones keep their shape, which keeps distortion low in the upper bass and midrange.

Tuned by measurement

The crossover is optimised on a Klippel Near-Field Scanner, and the waveguide keeps the dispersion smooth on and off axis.

Deep bass, no port

A 5×8" passive radiator takes the bass down to 41 Hz (−6 dB) without port noise.

Interested in the AsciLab C6B?

Experience it in person or get a personalised quote.

Specifications

Type	Passive 2-way with passive radiator
Tweeter	1" alumina-ceramic dome with waveguide
Woofer	6" alumina-ceramic cone
Passive radiator	5 × 8"
Crossover	1.1 kHz, 4th order
Sensitivity	85 dB (2.83 V / 1 m)
Impedance	4 Ω nominal (minimum 2.6 Ω at 200 Hz)
Frequency response	−3 dB at 50 Hz, −6 dB at 41 Hz
Maximum SPL	99 dB (full range), 105 dB (above 100 Hz)
Recommended amplifier	50 - 250 W
Dimensions (H × W × D)	400 × 203 × 265 mm
Weight	8.4 kg per speaker
Finishes	Black, white, grey (all matte)