What is an active loudspeaker?

An active loudspeaker is one which replaces the normal speaker level passive crossover (after the amplifier and usually located inside the loudspeaker cabinet) with an electronic crossover which is implemented at line level (before the amplifier/s). This electronic line level crossover may be located inside or outside the loudspeaker cabinet. An active loudspeaker requires one channel of amplification for each frequency band which is divided by the electronic line level crossover. These amplifiers may be located inside or outside the loudspeaker cabinet.

What are the advantages of an active loudspeaker compared to a passive loudspeaker?

The passive crossover network used in the vast majority of commercial loudspeakers consists of large value reactive components (capacitors and inductors) to divide or filter the amplified music signal to suit each of the chosen transducers. These lossy components present a complex load for the amplifier and audio fidelity can suffer as a result. In stark contrast, each of the amplifier channels in an active loudspeaker deals with a limited frequency bandwidth and is connected directly to the voice coil of its respective speaker driver resulting in the lowest possible intermodulation distortion and maximum control.

I already own a great stereo amplifier so can I use this to drive your MT3F or IL-4F loudspeaker systems?

Because the line level electronic crossover for both the MT3F and IL-4F loudspeaker systems is an external unit you are free to use whichever amplifiers you like for each of the low, mid-bass (IL-4F only), midrange, and high frequency sections, provided of course that it has sufficient dynamic headroom for your preferred listening volume and room size. One could even utilise a low powered SET amplifier for the less-demanding midrange or high frequency sections and a high power solid state amplifier on the bass section.

What happens if one of the electronic components inside my SGR Audio active loudspeakers should fail?

All SGR Audio products include the finest after-sales support in the industry and in the unlikely event that something does go wrong you can rest assured that a replacement part will be dispatched promptly and that system down-time will be kept to an absolute minimum.

Do your loudspeakers and electronics have a particular "type" of sonic presentation?

All SGR Audio loudspeakers and electronics are designed and built around the philosophy that the audio system should impose as little of itself on the original music signal as possible. In other words, we have gone to great lengths to maximise fidelity to the original recording by minimising non-linearities and all forms of distortion and noise.

Can your active loudspeakers be used for home theatre applications as well as two channel music listening?

Absolutely! The requirements for a truly convincing home theatre experience are no different to those for life like stereo music reproduction. We manufacture dedicated centre channel loudspeakers to complement both the CX and MT Series loudspeakers. Since most of our active loudspeakers have both the line level electronic crossover and all required amplification built into the cabinets, setting up a multi-channel home theatre could not be neater or simpler. Simply route long shielded interconnects between your surround sound processor/preamplifier's line level outputs and each active loudspeaker. This is sonically superior to running long loudspeaker cables between a home theatre receiver/amplifier and five or more traditional passive crossover loudspeakers.

What is the minimum number of components required to make up a high end stereo music system?

You could have a high performance stereo system comprising just three components by partnering either the CX3B or CX4F active loudspeakers with our forthcoming MusicKube, capable of replacing three traditional components (digital transport, digital to analogue converter and preamplifier) and with the added convenience of being able to browse your entire digital music collection on your preferred handheld touchscreen device. Nothing could be simpler or more elegant.

Do your loudspeakers have any adjustability to suit individual tastes or to overcome troublesome room-related issues?

Yes, all of our active loudspeaker systems include switchable shelving filters for the very bottom and top octaves as well as level controls for each frequency band. In some cases parametric equalisation is available in the bass section to ensure the smoothest possible in room frequency response. Of course, all of these features are implemented entirely in the analogue rather than the digital domain to avoid any loss of resolution.