RCF 4PRO 8001-AS Active Bass Reflex Sub Woofer

TAED AMPLIFIER TECHNOLOGY

RCF True Active Extended Dynamic amplifier technology is a result of nearly ten years at the forefront of active speaker design and manufacture. The result is the perfect match of amplifier to transducer, RCF is able to achieve this because quite simply they design and manufacture directly ALL the ingredients. If you are able to increase the effective dynamic range of a loudspeaker system this will immediately provide improved sonic accuracy, voice clarity, depth and resolution of the audio signals.

The new generation of active amplifier modules are designed with a new ‘’Double Wave’’ Limiting System that apart from giving improved transducer protection - guarantees the full use of the true dynamic range of the power amplifier. This in turn dramatically reduces distortion levels.

NEODYMIUM MAGNETS

RCF Precision Compression Drivers and Woofers come equipped with high thermal performance with high performance lightweight Neodymium magnets, offering advantages in system portability and high frequency clarity (due to the force of magnetic flux in the gap exceeding 2 kilogauss).

Specific attention has been paid to magnetic circuit polarisation for optimum thermal immunity.

PURE TITANIUM DIAPHRAGM

RCF has developed an oxygen free process of moulding pure titanium ultra thin films in high quality, finely controlled shaped diaphragms.

The RCF process offers superior sonic quality, extended to the highest audible frequencies which guarantee consistent power handling and reliability.

INSIDE/OUTSIDE VOICE COILS

RCF has developed a unique voice coil, combining the advantages of inside/outside technology to the superior quality of polyimideimide materials (wire resins and former resins).

The inside/outside coil offers many advantages:
- the dissipation surface is doubled
- the adhesion area to the former is doubled
- during thermal expansion the former is squeezed between inside and outside layers offering the best mechanical resistance.

The former is made from polyimide – imide fibreglass and the area between the coil and the cone is a triple layer of nomex – fibreglass – nomex for maximum stiffness and accurate sound transfer.

DIRECT DRIVE VOICE COIL ASSEMBLY

RCF voice coil assemblies are designed using high-strength high-temperature Nomex® voice coil Formers with rectangular profile copper clad aluminium wire which is assembled using advanced specially formulated adhesives.

Proprietary curing processes ensure optimal assembly strength and safe operation even under extreme thermal conditions. The top of the Former is bent and bonded directly to the edge of the titanium diaphragm resulting in a Direct Drive configuration. Direct Drive guarantees optimal transfer of energy between the voice coil and the dome assembly, providing smoother, extended frequency response beyond 10 KHz, reducing break up modes and lowering distortion.

This assembly delivers high power handling along with excellent mechanical and thermal properties that make RCF Precision Series compression drivers robust and reliable.

VOICE COIL

Power Compression is the neglected factor in many professional audio system designs. In woofers and subwoofers the power compression at maximum rated power can vary from 3–4 dB for good designs and up to 6–7 dB for poorly vented or small coil designs. This will affect not only the final achievable sound pressure level (SPL) but also the transducer Thiele-Small parameters, dramatically changing the high power curve response and sound characteristics.

For this reason all our woofer and subwoofer designs are equipped with large sized, properly vented inside/outside voice coils. This guarantees the long term reliability and life of the product.