Stratton Acoustics Elypsis1512 Speaker – Quick Look

All image Credit: Stratton

Stratton Acoustics is a new UK-based high-end loudspeaker manufacturer that has recently released the Elypsis 1512 speaker. Its design is similar to the large studio style control room monitor speakers from the likes of JBL, Tannoy and Urei that I worked with back in the 70’s, 80’s and 90’s. According to Stratton; “we developed our first loudspeaker, the Elypsis1512, with just one goal in mind: to recreate the visceral musical excitement of the 1970s golden age of large scale studio monitors”.

The Elypsis1512 is a three-way passive speaker design comprising twin 380mm (15-inch) bass drivers, a single 300mm (12-inch) midrange driver and a mechanically decoupled, 29mm (1.2-inch) soft dome tweeter with a precision waveguide and are built as mirrored-imaged pairs.

The twin 15-inch (380mm) bass units use reinforced paper diaphragm drivers, each rated at 800 Watts. They feature a 113mm (4.5-inch) voice coil, an aluminum demodulation ring and a twin spider suspension system producing a claimed linear excursion of ±14mm. Mounted in a 230 liter reflex enclosure and loaded by four ports tuned to 34Hz, the low frequency response extends to -6dB @ 28Hz with a group delay of under 12mS at 40Hz.

The single midrange 12-inch (300mm) reinforced paper diaphragm driver features a 75.6 mm (3-inch) voice-coil, a neodymium-iron-boron magnet system, a copper-sleeved pole-piece and is mounted in its own sealed and damped enclosure.

HF is handled by a 1.2-inch (29mm) diameter soft dome tweeter that uses a neodymium-iron-boron magnet system with a double copper capped, T–shaped pole piece and a flow-optimized rear enclosure. It is matched to a CNC machined aluminum waveguide that controls its dispersion characteristic and adds increased efficiency through acoustic impedance matching. The tweeter is isolated from enclosures mechanical vibrations using a Stratton Acoustics patented decoupling arrangement.

The passive crossover use audiophile quality metalized polymer capacitors and mostly air cored inductors that support the 2nd and 3rd order asymmetric filter slopes creating crossover frequencies of 350Hz and 2.5KHz. Midrange and tweeter level adjustment of ±2dB are available on the front panel.

The Elypsis 250 liter cabinet is created from a mix of 25mm and 18mm birch ply panels that are precision CNC routed, with the front baffle made from 46mm ply. The complex internal bracing and use of non-parallel internal panels all helps to suppress unwanted vibrations and internal resonances.

All this attention to detail is claimed to result in a system with; a low frequency cut-off of -6dB @28Hz, a frequency response of 45Hz to 18kHz ±2dB, a sensitivity of 96dB SPL for 2.83v @ 1m and an impedance and electrical phase response that remains above 8Ω and between ±20° respectively between 100Hz and 10kHz.

For more information visit the UK Stratton web site.

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