Alternate
Audio PS40
Planar Speaker

The Alternate Audio PS40 represents the
state-of-the-art in permanent magnetic push/pull
planar speakers. Nearly 10 years of development
have resulted in a speaker that is capable of
extremely high-resolution audio reproduction.
The advanced technology of the PS40 offers the
following benefits:
- Very wide bandwidth
- High power handling
- Controlled dispersion pattern
- Extraordinary dynamic range
- Linear push/pull magnetic structure
resulting in ultra low distortion
- Purely resistive loading (planar element)
- Detail and resolution to rival live
performance
- High-quality polypropylene crossover caps
- Gold-plated binding posts
 
The PS40 is capable of resolving precise
details in any musical source due to the
diaphragm's extremely low mass. The PS40
effortlessly handles the frequency range of most
woofers, midranges, and tweeters, even though the
PS40's diaphragm is lighter than the diaphragms
of most common tweeters! This wide bandwidth
capability minimizes the need for crossover
networks and their associated distortions.

The PS40 uses a push/pull magnetic structure.
This structure is expensive and difficult to
manufacture, but results in a diaphragm that is
always in the controlling magnetic field. The
benefit of this is a sound with ultra-low
distortion. Coupled to the PS40 planar element is
a 10" Kevlar cone woofer of uncompromised
quality.
| Specifications |
| Diaphragm size |
height: 40
inches, width: 4 inches |
| Diaphragm piston area |
160 square inches |
| Diaphragm thickness |
0.33/1000 inches |
| Diaphragm mass |
6 grams |
| Magnetic structure |
push/pull linear |
| Magnetic structure mass |
5.5 pounds ceramic V |
| Frequency response
(planar element) |
200Hz to 19kHz +/-3dB |
| Frequency response
(system) |
35Hz to 19kHz +/-3dB |
| Sensitivity |
87dB @ 1W/m |
| Power handling |
200 Watts continuous |
| Impedance (planar
element) |
6.7 ohms pure DC |
| Impedance (system) |
8 ohms nominal |
| Crossover |
300Hz first order, or
bi-amp capable |
|