The ECP-M4 4" (10cm) speaker set from Emphaser offers detailed and low-distortion reproduction thanks to an aluminum cone and durable butyl rubber surround in the midrange driver. The 25 mm tweeter impresses with a warm sound image and reproduces even the smallest musical details. Two selectable crossover frequencies and a three-stage level adjustment of the crossovers enable precise acoustic adjustment depending on the installation situation. The set includes two tweeters, two mid-range speakers, four crossovers and two speaker grilles. With a rated power handling capacity of 70 W RMS and a rated impedance of 4 ohms, it covers a frequency range from 100 Hz to 22 kHz.
The midrange driver
Due to its hardness and high natural resonance frequency, our aluminum cone of the woofer/midrange driver is ideally suited for detailed and extremely low-distortion reproduction. The thickness of the cone is chosen to provide the necessary stability and lightness for precise mid-range reproduction. The durable surround ensures that the ECP-M4 does not lose any of its precise reproduction even at high levels and therefore higher cone excursions. The Compo ECP-M4 owes its clean, crisp reproduction and level capabilities to the powerful strontium ferrite magnets of the midrange driver. Details such as the die-cast aluminium basket with optimized temperature management, the butyl rubber surround, a copper cap on the pole piece, a 2-layer copper wire voice coil on a temperature-resistant aluminium voice coil former or the durable Connex spider with woven-in voice coil lead underline the quality of these speakers.
The tweeter
The 25 mm tweeter with fabric dome convinces with its warm sound image and can reproduce even the smallest musical details. The cone geometry offers a uniform directional characteristic for excellent sound in a wide variety of installation situations. In addition to the low weight of the cone, surround and voice coil, the conscious decision not to use ferrofluid is the main reason why the tweeter plays so vividly, spatially and without coloration.
The crossover
For the ECP-M4 10 cm Compo system, two crossover frequencies can be selected for the tweeter in order to acoustically compensate for the spatial distance to the midrange driver, which can be shorter or longer depending on the installation situation. The crossover components were defined in intensive test series in the laboratory and in the vehicle in order to achieve the best possible phasing of the components. The result is authentic voices and instruments with precise stage imaging and impressive spatial depth.
Main features midrange driver
- 10 cm midrange driver
- Die-cast aluminium basket with optimized temperature management
- Aluminum membrane with inverse aluminum dust cap
- Durable butyl rubber surround
- Two-layer copper wire voice coil, wound on a temperature-resistant aluminum voice coil former
- Pole plate with Faraday copper ring for a stable magnetic field
- Durable Connex centering spider with woven-in voice coil cable
- Strontium ferrite magnet
- Gold-plated screw terminal
Main features tweeter
- 25 mm fabric dome with neodymium magnet
- CNC-milled aluminum housing with low installation depth
- Protective grille with very large opening area for high sound permeability and low reflections
- Surface-mounted housing for mounting at two different beam angles
Key features crossovers
- Slope 12 dB/oct. midrange / 6 dB/oct. tweeter
- Two crossover frequencies can be selected for the tweeter in order to acoustically compensate for the spatial distance to the midrange driver depending on the installation situation
- Three-stage level adjustment for the tweeter
- Separate crossover housings for tweeter and woofer for optimum ease of installation, no mutual interference between the two signal paths due to chokes that are too close together
- Use of high-quality air-core coils, MKP capacitors and MOX resistors in the direct signal path
Technical specifications
- Rated load capacity: 70 W RMS
- Nominal impedance: 4 Ohm
- Frequency response: 100 Hz - 22 kHz
- Sensitivity 1W/1m: 84 dB
- Installation diameter: 93 mm
- Installation depth: 44 mm
Scope of delivery
- 2 tweeters
- 2 midrange speakers
- 4 crossover units
- 2 piece loudspeaker grille
Download data sheet
