The Peerless STW-350F-188PR01-04 15 subwoofer produces deep and clean low-frequency reproduction with minimal distortion at high output levels.
By attaching the rear of the frame to a brace in an enclosure, the baffle will be solidly tied to the sides walls increasing the rigidity of the enclosure.
Front and Rear Mounting PointsDue to the weight and extreme force that the STW-350F is capable of, Tymphany included rear mounting points on the back side of the frame.
In other words, this driver is capable of 90 mm (3.5) peak to peak excursion while still producing low distortion output.
Thanks to such extreme dimensions and a well controlled magnetic field, this driver is capable of 45.5 mm of excursion before any major loss in motor strength (Bl).
The STW-350F has a remarkably long 36 mm magnetic gap with a 57 mm long voice coil.
However, Xmax is just a physical measurement and not actually the limit of linear excursion (Xmax = (Voice Coil Length - Magnetic Gap Height) / 2).
Long Coil + Long Gap = High ExcursionWith an Xmax of 10.4 mm this driver might not seem all that impressive.
The STW-350\'s motor is the best of both worlds: reliable and efficient.
Conventional motor structures with the magnet outside of the motor lose 50% of their energy in stray fields, while a magnet on the inside of the voice coil will have 90% or better magnet utilization.
An additional benefit of the STW-350F\'s giant coil is that Peerless was able to mount a ferrite motor inside of the voice coil.
In most cases a more powerful motor is achieved with a larger magnet (which increases a driver cost, size, and weight) or using a more efficient neodymium magnet (which is unstable and loses strength as the temperature increases).
Internal Motor DesignTo drive a high moving mass a subwoofer needs a powerful motor.
Because of this, the voice coil takes longer to heat up, resulting in uncompressed dynamic musical peaks.
A voice coil with large surface area also offers another benefitpower compression is practically non-existent.
Unlike a conventional motor design, Bl changes very slowly as function of voice coil displacement.
For the STW-350F, it was put into the voice coilthis improves the performance of the driver by raising the motor force.
Massive 7.4 Diameter x 2.25 Long Voice CoilWith small enclosure subwoofer design high-moving mass is necessary, but it is difficult to apply mass where it can be put to work.
This driver is built for high-quality performance and long term reliability.
This driver also features a unique FEA-optimized ferrite motor, extremely robust suspension, and an incredible amount of venting which provides extraordinarily low power compression even when driven with over 3,500 watts of power.
Unlike most subwoofers, the STW-350 can be mounted in a much smaller box than traditional subwoofers, which is enabled by the low Vas, high moving mass, and huge 7.4 (188 mm) voice coil.
This drivers offer deep and clean low-frequency reproduction with minimal distortion at high sound pressure levels.
HighlightsMassive 7.4 voice coil produces extraordinary low power compression2 Large aluminum shorting rings for better control and minimal harmonic distortionDual 8 ohm voice coil allow multiple wiring configurations including dual amplifier designsInternal magnet structure provides more force from a smaller magnetLower Vas and Fs with higher BL for unmatched low end capability from the smallest enclosuresExtensive voice coil venting for quiet operation and increased power handlingOver 90mm of mechanical excursion prevents failure under the most demanding conditions Product DetailsPeerless by Tymphany STW-350F-188PR01-04 15 High Power Subwoofer A New Generation of High Output, High Power SubwoofersThe STW-350F-188PR01-04 subwoofer from Peerless was designed with performance and space in mind.
Designed from the ground up for output, performance, and reliability from the smallest enclosures, this driver with its 7.4 voice coil, internal magnet assembly, and outrageous excursion capability is a welcome departure from conventional subwoofer designs.
The Peerless STW-350F-188PR01-04 15 subwoofer produces deep and clean low-frequency reproduction with minimal distortion at high output levels
