Acoustic Energy AE2 loudspeakers

The Acoustic Energy, model AE2 is a high-power, compact, two-way loudspeaker, featuring the new patented "Metal Cone" bass/mid-range drive unit.

The "Metal-Cone" drive unit is a breakthrough in diaphragm technology and provides unequalled mid-band calrity, remarkable transparency and stero imaging due to the almost complete elimination of distortion

The use of two Bass/Mid range driver units in the AE2 gives further bass extension whilst retaining the speed and control of the unique "Metal-Cone".

The single most important element of a speaker is the diaphragm and the unique design of the Acoustic Energy "Metal-Cone" also provides exceptiona a power handling and durability.

"Metal-Cone" technology is protected by European Patent Application (no.87310904.5), United States pat. App. (no.133.020) World Patents Pending

Specifications

Frequency Response:  25 Hz - 30,000 Hz

On Axis at 1 m :  65 Hz - 18 kHz ±2,5 dB (50 Hz - 22 kHz ±4 dB)

Off Axis ±15° Horizontal at 1 m :  60 Hz - 18 kHz ±3 dB

Off Axis ±15° Vertical at 1 m :  60 Hz - 18 kHz ±3 dB

Sensitvity:  2,83 Volts RMS produces 91 dB SPL at 1 m

Impedance:  Minimum 5,5 Ω at 50 Hz  and 250 Hz. Max 16 Ω at 27 Hz

Harmonic Distortion:

At 90 dB / 1 Metre

2nd Harmonic :  less than 0,05%

3rd Harmonic :  less than 0,05%

At 100 dB / 1 Metre

2nd harmonic :  less than 0,1%

3rd Harmonic :  less than 0,1%

Power Compression Factor:  less than 1 dB at minimum Impedance (250 Hz) with an increase of 16 dB ( 1 watt, 40 watts ratio) Frequency Response within ±0,5 dB at 1 Volts RMS (ref. To 2,83 V RMS Input)

Power Handling:  for use with amplifier up to 250 watts RMS on program

Crossover:  2 way system

Crossover Frequency :  3,0 kHz 4th order 24 dB /octave 10 element all coils low DCR (LF Iron Dust Core, HF Air Core) all capacitors low Loss Polyester

Internal Wiring:  all connections via 24 strand 0,4 mm diameter Solid-Core Oxygen-Free-Copper (OFC). Silver plated individually Insulated conductors. All  connection Silver soldered.

LF Unit :  2 x 32 mm Edgewound ribbon copper voice coil, thermally coupled to tri-layer Ultra Hard Alloy 90 mm diaphragm max electrical peak to peak excursion - 8 mm max mechanical peak to  reak excursion 20 mm

HF Unit : 1 25 mm Edgewound ribbon copper plated aluminium voice coiil Thermally coupled to magnesium alloy 25 mm diaphragm ferrofluid damped and cooled Damped rear chamber loaded.

Connectors:  2 set 4 mm Binding posts for Bi-wiring

Cabinet:  precision engineered enclosure with bonded high density lining supplied with removable front grille

Finish:  Textured Black

Dimensions (W x D  x H):  235 x 330 x 385 mm

Weight:  17 kg (each)

Acoustic Energy AE3 loudspeakers

Reference loudspeaker, model AE3

The AE3 is a high power, trhee-way loudspeaker featuring "Metal-cone" low-frequency and mid-range drive units. The well proven 130 mm (5") "Metal-Coe" drive unit, as used in the AE!, has been further developed and is used int he AE3 in a mid-range form in a heavily damped tubular transmission line enclosure within the main enclosure. The AE3 has the power and scale of much larger speakers but retains the dynamics, transparency, speed and detail of the AE1. "Metal-Cone" technology is protected by european patent application no.87310904,5 United States patent application no.133,020, World patents pending

Specifications

Frequency Response;  25hz - 30,000 Hz

On Axis of HF at 1 m :  55 Hz - 17,000 Hz ±2,5 dB

On Axis of MF at 1 m :  55 Hz - 17,000 Hz ±2,0 dB

Off Axis of HF±30° Horizontal at 1 m :  55 Hz - 14,000 Hz ±3 dB

Off Axis of HF +15° Vertical at 1 m :  55 Hz - 17,000 ±3 dB

Off Axis of HF - 15° Vertical at 1 m :  55 Hz - 16,000 ±2 dB

Sensitivity:  87 dB

Impedance:  4 Ω min. At 110 Hz (typically 6 Ω)

Total Harmonic Distortion:  typically 0,3% (range 200 Hz - 20 kHz)

Power Compression Factor:  Not measurable below 100 watts power input from band limited pink noise 63 Hz - 20 kHz

Power Handling:  for use with amplifiers up to 250 watts RMS

Crossover:  3-way system Crossover frequencies 300 Hz and 3 kHz. 18/24 dB per octave filter slopes, 32 element - all coils low DCR (Iron Dust Core or Air Core) all capacitors low loss electrolytic or polyester

LF Unit:  40 mm Edgewound ribbon copper voice coil on high thermal conductivity former thermally coupled to tri-layer ultra hard alloy 160 mm diaphragm, max linear electrical peak to peak excursion - 10 mm max. Mechanical peak to peak excursion - 20 mm

MF Unit:  32 mm Wdgewould ribbon copper plated aluminium voice coil on high thermal conductivity former thermally coupled to tri-layer ultra hard alloy, 90 mm Diaphragm, high gauss, low viscosity ferrofluid damped and cooled.

HF Unit:  25 mm Edgewound ribbon copper plated aluminium voice coil thermal ly coupled to magnesium alloy 25 mm Diaphragm. Ferrofluid damped and cooled. Damped rear chamber loaded.

Connectors:  3 set 4 mm Binding posts for Tri-wiring

Cabinet:  Precision engineered MDF enclosure with bonded high density lining finished in black texture, Supplied with removable front grille

Dimensions (W x D X H):  275 mm x 385 mm x 640 mm

Weight:  33 kg (each)

Acoustic Energy AE 1 classic

The AE1 Classic is modelled on the original AE1 from around 1990. our aim was, within the limitations of component supply and manufacturing, to make the AE1 Classic as close to identical as possible. That we didn't quite make it is only because, thanks to improved components and manufacturing consistency, the AE1 Classic is better.

The originsl AE! Introduced new techniques in almost every element of its design and construction, each one aimed at making a better nearfield monitor. It was, for example, the first professional monitor with a ceramic sandwich aluminium cone, the first to increase power handling by using the cone as a heat-sink, the first to incorporate a metal dome tweeter,, the first to feature a latex fibre/powder composite lined cabinet, and the first to demonstrate beyond doubt that a seriously small speaker could be a seriously capable monitor.

The AE 1 technical highlights feature in the Classic just as they did in the original. The bass/midrange driver is UK manufactured in house at Acoustic Energy using a spun aluminium cone only 0,2mm thick. The cone is hard anodised onn both side to create an immensely rigid sandwich component and then bonded to an aluminium voice-coil former. The intimate bond between metal former and cone means that the entire cone area is used for heat dissipation. As a result, and despite its small dimensions, the AE 1 driver offers generous power handling and suffers minmal compression.

Welcome though it is, power handling is not the primary reason for the choice of an aluminium cone. Aluminium's combination of light weight and rigidity means that cone break-up is delayed till well above the crossover frequency. And thanks to the aluminium cone, bass/mid driver and magnesium dome tweeter, the AE 1 Classic is one of very few speakers of any type that can genuinely claaim pistonic operation over the full audio bandwidth. The result is extraordinary tonal accuracy that reveals the shortcomings of most other monitors.

Near ideal drive unit performance however would mean little if the AE 1's cabinet panels sang along in sympathy. That they don't is thanks both to the inherent rigidity of the AE 1 construction and to the unique latex composite lining of the internal walls.

AE 1, First and Second

The E 1 was the first truly accurate, high power compact nearfield monitor. We believe 20 years later the AE 1 Classic is perhaps the only speaker to reach its predecessor's standards. The AE 1 Classic completes the award winning reference series, which features the AE 1 MkII and AE3 MkII.

Specifications

Driver:

Bass/Mid :  110 mm ceramic sandwich aluminium cone, 32 mm edge-wound voice-coil

Tweter :  32 mm magnnesium alloy dome

Crossover:  third order at 3 kHz

Power Handling:  compatible with amplifiers rated at up to 200 watts into 8 ohmm

Frequency Response:  70 Hz - 22 kHz ±3 dB

Sensitivity: 88 dB for 2,83 V at 1 m

Nominal Impedance:  8 Ω

Total Harmonic Distortion:  typically less than 0,3%, 200 Hz to 20 kHz

Power Compression:  less than 1 dB for 16 dB gain at 250 Hz

Dimensions (W x H x D):  295 x 180 x 255 mm

Weight:  8 kg (single speaker)

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