HELIX PURE R-series: Flawless sound, pure excellence
HELIX PURE transcends beyond mere music. It′s an audiovisual journey, dedicated to uncompromising sound quality and uniqueness, designed for discerning audiophiles and individualists who refuse to make compromises in their daily life. The PURE R-Series represents the pinnacle of our PURE speakers, combining their essential features to perfection: uncompromising sound quality, high-quality materials and unparalleled aesthetics.

Highest Quality and elegant design
Our premium speaker systems are the result of years of development and an unwavering commitment to highest quality standards. By utilizing state-of-the-art components, they deliver an unparalleled sound reproduction and a dynamic musical experience that is second to none. Here, quality is not only audible but tangible as well. The timeless, elegant design discreetly and harmoniously blends with the interior, providing aesthetic pleasure without ever being obtrusive. Through the use of innovative technologies, the achievement of sonic precision can be felt in every note, while also allowing incredible power handling that doesn′t even compromise at demanding volume levels.

Absolute high-frequency brilliance
The HELIX PURE R-series premium tweeter is an example of absolute excellence within the PURE speaker lineup. It distinguishes itself with the lowest possible manufacturing tolerances and exclusive use of top-tier materials, such as the coated silk dome. This component leads to the faithful rendition of even the finest details, ensuring a smooth and natural sound reproduction for an unmatched high-frequency experience. Furthermore, its smart and compact design offers diverse mounting options for a universal installation. The anodized aluminum flush mount housing with the solid mounting ring allows a concealed installation, while the included grilles, available in two exclusive designs, provide both protection and aesthetic options.

A sound experience that you can hear and feel
The HELIX PURE R-series premium woofer delivers unparalleled sound quality that you can hear but also feel. The stiff Mica-Paper composite cone ensures not only a punchy kickbass but also delivers a balanced midrange reproduction that brings your music to life. To achieve optimal impulse response, it utilizes an exceptionally powerful magnet system while the rigid aluminum diecast basket with streamlined, low-turbulence design guarantees ideal impulse fidelity. Furthermore, additional ventilation holes in the basket enhance coil cooling and enable impressive power handling. Always included: HELIX grilles for the ideal protection of the cones.

Maximum flexibility – Flex-Crossover
The separatable Flex-crossover is not only a visual highlight but also provides a wide range of connection possibilities due to its technical refinements, making it perfectly-suited for installation in vehicles with separate mounting locations for tweeters and woofers. It offers a 3-stage tweeter level adjustment for optimized treble adaptation to the respective mounting position, while featuring a 12 dB slope for tweeters and woofers that has gone through extensive fine-tuning.

Features
2-way premium speaker system with impressive, detailed sound quality and powerful, dynamic music experience
High-performance speakers with innovative technologies for high, distortion-free output with precise, natural highs and powerful kick bass
Modern, elegant design for discreet integration into interiors
Tweeter
1” / 25 mm premium tweeter with coated silk dome for precise treble response with finest details and an accurate, natural sound reproduction
Compact design with multiple mounting options for universal installation
Includes anodized flush mount housing with solid mounting ring for discreet mounting and cover grilles in two exclusive, swappable designs
High-grade aluminum tweeter pod (PR ATP25) optionally available
Woofer
6.5″ / 165 mm premium woofer with stiff mica-paper composite cone for powerful kick bass and balanced midrange response
Rigid die-cast aluminum basket with aerodynamic, flow-optimized design for enhanced impulse response
Basket with additional ventilation holes for improved cooling of the voice coil for impressive power handling
Powerful magnet system for high efficiency and optimized linear magnetic flux
Including discrete HELIX grilles for the ideal protection of the cones
Flex-Crossover
Separable flex-crossover with versatile connection options – perfectly suited for installation in vehicles with separate tweeter and woofer mounting locations
Extensively tuned high-pass and low-pass filters with 12 dB slope
3-stage tweeter level adjustment for optimal adaptation to the installation position
Exclusive use of high-quality components for best sound quality

Technical data
Power handling RMS / Max. P 100 / 200 Watts
Frequency response 40 Hz – 25,000 Hz
Impedance Z 4 Ω
Sensitivity SPL 91 dB @ 2.83V / 1m
88 dB @ 1W / 1m
Outer diameter
(more data see manual) ø
Tweeter: 37.7 mm / 1.48”
Woofer: 166 mm / 6.54”

Installation diameter
(more data see manual)
ø
Tweeter: 37.7 mm / 1.48”
Woofer: 141 mm / 5.55”

Installation depth
(more data see manual)

Tweeter: 10.6 mm / 0.42”
Woofer: 66.5 mm / 2.62”

Dimensions crossover
(more data see manual)

Total: 121 x 107 x 31.2 mm / 4.76 x 4.12 x 1.23”
Separated (each): 62 x 107 x 31.2 mm / 2.44 x 4.12 x 1.23“

Woofer
Impedance Z 4 Ω
DC resistance Re 3.1 Ω
Resonance frequency Fs 57 Hz
Mechanical Q factor Qms 5.35
Electrical Q factor Qes 0.63
Total Q factor Qts 0.57
Compliance Cms 440 μm/N
Equivalent air volume Vas 10.8 L
Force factor B*l 6.1 Tm
Cone area Sd 133 cm2
Moving mass Mms 17.9 g
Mechanical resistance Rms 1.19 kg/s
Voice coil diameter ø 25 mm
Voice coil winding height

12 mm
Max. linear excursion Xmax +/- 3 mm

Tweeter
Impedance Z 4 Ω
Resonance frequency Fs 1400 Hz
Voice coil diameter ø 25 mm

Features
Tweeter
Coated silk dome, neodymium magnet and aluminum housing with two different grilles

Woofer
Mica-Paper composite cone

Crossover
Tweeter: 12 dB highpass with 3-stage tweeter level adjustment
Woofer: 12 dB lowpass and bandstop filter

Scope of delivery
2 x Tweeter PR T25-S
2 x Woofer PR W165
2 x Flex-Crossover
2 x Woofer grille
2 x Tweeter aluminum flush mount housing
2 x Tweeter OEM spacer
2 x Standard tweeter grille
2 x Exclusive HELIX tweeter grille
1 x Mounting material