Odyssey Audio Hong Kong - Abacus A-Box 10 Active Speakers

Abacus A-Box 10 Active Speakers

DSP-controlled Bi-amped Self-powered Loudspeaker.

ABACUS has an amplifier circuit that controls loudspeakers in a unique way. This allows the transducer to almost 100% can be linearized if they are connected to the amplifier iverbunden fixed. ABACUS presented with A-box a DSP -based active speaker system with superior characteristics.

At ABACUS bi-amp powered speakers each way has its own ABACUS transconductance passive, with no crossover components. Because the characteristics of the transducers and all other components of the speaker are known, a built-in equalizer to smooth out any response - thanks to the ABACUS circuitry even below the resonant frequency.

The result is just great, a linear 16Hz to 20kHz (nearfield) make this speaker out-perform many floor standing speakers. Extremely good for Hong Kong's small living room environment. It is the best among active speakers of the same size.

Product review by www.audio.de : Click Here
Product information (www.abacus-electronics.de) : Click Here

Superior Design

ABACUS has an amplifier circuit that controls loudspeakers in a unique way. This allows the transducer to almost 100% can be linearized. ABACUS presented with A-box a DSP -based active speaker system with superior characteristics.

DSP to Produce Linear Frequency Response and Perfect Cross-over

The built-in digital signal processor ( DSP ) does a variety of different tasks, without creating the expense of components grows immeasurably.

In the ABACUS used DSP provides countless filter ready, takes over the function of an active crossover, linear frequency response and on top of that switching and control functions. If the signal is digitized only once, namely it can be processed without any sound degradation, because each filter and each control function is then only a matter of arithmetic, which is processed at high frequency. High-resolution AD and DA converters are at the of ABACUS used chip is already "on board". The advantage is that the internal signal paths are correspondingly short.

But in the end is - as always with ABACUS - all strictly analogue, because a speaker is still an analog component. Incidentally, even the ears ...

Linear Frequency Response (Nearfield)

www.audio.de made independent measure and the results were just great:

At moderate sound pressure, Abacus A-Box 10's linear performance is amazing. Of course, the physical limitation remains a contraint. Abacus A-Box 10 has optimize the audio performance for its form factor.

Features:

Self-powered Loudspeaker in compact design
10 L Box volume
Bi-amped using 2 equivalent ABACUS transconductance amplifiers
16,5cm (6,5”) Woofer
25,4mm (1”) Tweeter
Linear from 16 Hz (…200 Hz) to 20.000 Hz
Controlled by DSP and microprocessor
RCA Line-Input
Balanced input (XLR or 6,3mm jack)
Overload protection (Program limiter)
Excessive heat protection
Subsonic filter
Automatic start-up (starts if audio signal is present)
Volume continuously adjustable
Bass roll-off continuously adjustable from 16 Hz to 200 Hz
Real wood veneer, ash wood black or white
Textile speaker grill (detachable)
A stereo set comes with:
2 Front covers
1 Cable 3,5mm Stereo jack on stereo RCA (1,5m)
2 Power cords (2m)
1 Power Y-adapter cable
Rubber feet
User manual

Specifications

Mains voltage: 230V AC

Power consumption, stand-by: <0,5W

Power consumption, idle: <7W

Power consumption, maximum: 52W

RMS-power: 50W

Music power: 75W

Frequency range: 16…200-20.000Hz

Input impedance: 10kohm

Maximum input voltage: 5V (peak to peak)

Woofer: 165mm / 4ohm

Tweeter: 25,4mm / 6ohm

Crossover frequency: 2500Hz

Charge capacity: 2×9.400μF/2×6,1J

Interior box volume: 10,3 L

Dimensions (W x D x H): 210×235×353,5 mm

Dimensions of enclosure (W x D x H): 210×210×350 mm

Weight (1 Box, including speaker grill): 6.6 kg