PHL Audio specifications Applications, Design Concept, Features, 1660 8 Ω, 1670 16 Ω

1660 8 Ω	E17
	PROFESSIONAL SERIES
167016 Ω

6.5” Midrange Extended Drivers

High Sound Pressure Level

High Sounding Quality

APPLICATIONS

These models are the ”long excursion” versions of types SP1500/1510. They are dedicated to being used when applications require low-midrange extension capability together with high SPL.

Their particular design ensures that they perform without any compromise in sound quality, making these models optimum for sound reinforcement systems as well as studio monitoring.

Their preferred frequency domain starts from 400Hz (single unit) or 300Hz (dual driver) in direct radiation, while 200Hz is possible when horn is mounted.

DESIGN CONCEPT

PROGRESSIVE WAVE DIAPHRAGM optimized for low-midrange extended frequency domain.

The M17/E17 Series design is based on the PROGRESSIVE WAVE DIAPHRAGM mechanical behavior of the radiating area.

In this principle, the membrane is considered as a mechanical transmission line which should receive a constant given velocity together with critical damping properties to work properly.

This leading edge technology offers substantial sonic advantages. Among them : very low mechanical energy storage in the cone (avoiding standing waves) which ensures coherent sound, fast transients, stable sound imaging, high sensitivity, wide frequency range and very-low directivity pattern.

VENTED COMPACT MAGNET SYSTEM. It has been carefully optimized to obtain maximum transducing efficiency while avoiding unlinear behavior such as coil inductance variation with position, flux modulation, harmonic distortion, rest position offset, air compression and off-axis voice-coil pushing.

Its design incorporates a T-shaped and vented pole piece, and a flux stabilization ring. It also takes into consideration demagnetization at cold temperatures.

INTERCOOLER SYSTEM (patented). Entirely integrated into the loudspeaker itself, the INTERCOOLER SYSTEM extracts the heat produced by Joule effect in the voice-coil by the means of an air flow directed through the heatsink rims of the basket by the motion of the dust-cap and the spider.

The gain brought about by this technology is over 20 % of extra power, so for example, a 3”coil according to this design has the same power handling capacity as a classical 4”one.

FEATURES

Power handling capacity 250 W AES Reference efficiency(1W @ 1m) 97 dB SPL

SPL max (continuous)	117 dB SPL
Usable frequency range	300-5000 Hz

Environmental withstanding Outdoor✚

ARCHITECTURAL SPECIFICATIONS

NOMINAL DIAMETER : 166 mm.

FRAME : High tensile alloy pressure die-cast basket with patented

INTERCOOLER SYSTEM.

MAGNET SYSTEM : 2”highly energized, heat extracting design with vented pole piece and flux stabilizing ring.

VOICE COIL : High-temperature stabilized, copper-clad aluminum ribbon wound on vented high-strength glass polyimide former.

CONE ASSEMBLY : High-strength cellulose fiber cone impregnated and coated on both sides with damped resins, fitted with central carbon-fiber dome, high-speed flat damped surround and acoustacally damped rear cavity.

SPEAKER MASS : 2.15 Kg.