Applications
- Chosen preferably to types SP4550/4560 when higher AES Power handling capacity is requested
- These high SPL high sounding quality low-midrange drivers are ideal for sound reinforcement applications within the 60Hz to 2.0kHz frequency band , where a pair can be used by paralleling two SP4060 for long throw systems of exceptional sound accuracy
- Maximum X-over frequency is 1.5Khz in this case
- Optimum Bass-Reflex enclosure is 25L to maximum 40L tuned from 53Hz to 60Hz

Design Concept
Deflection Controlled Diaphram
- Optimized for dynamic damping
- Deflection Controlled Diaphragm technology consists in optimizing the shape and material of the diaphragm so that it works as a mechanical transmission line, to avoid breaking modes as well as mechanical threshold which destroy sound quality
- It is this leading edge technology which offers substantial sonic advantages
- Those advantages include sound coherency, fast transients, stable sound imaging, high sensitivity, wide frequency range and reduced directivity pattern

Vented Compact Magnet System
- Carefully optimized to obtain maximum transducing efficiency while avoiding unlinear behaviour such as coil inductance variation with position, flux modulation, harmonic distortion, rest position offset, air compression and off-axis voice-coil pushing
- Design incorporates a T-shaped and vented pole piece as well as a flux stabilizing ring
- It also takes into consideration demagnetization and cold temperatures

Intercooler System
- Entirely integrated into the loudspeaker itself, the Intercooler System extracts the heat produced by the Joule effect in the voice-coil
- It does so via an air flow directed through the heatsink rims of the basket by the motion of the dust-cap and the spider
- The gain brought about by this technology is over 20% of extra power, so for example, a 3" coil according to this design has the same power handling capacity as a classical 4" one

Features
- Power handling capacity - 350W ABS
- Reference Efficiency (1W @ 1m) - 99 dB SPL
- SPL max (continuous) - 120 dB SPL
- Usable frequency range - 60-3000 Hz
- Environmental withstanding - Outdoor

Architectural Specifications
- Nominal Diameter - 300mm
- Frame - High tensile alloy pressure die-cast basket with patented Intercooler System
- Magnet System - 3" highly energized, heat extracting design with vented pole piece flux stabilizing ring
- Voice Coil - High-temperature stabilized copper-clad aluminium ribbon wound on vented high-strength glass polyimide
- Cone Assembly - High-strength cellulose fiber cone impregnated and coated on both sides with damped resins, fitted with fabric dome, high-speed flat, damped surround and acoustically damped rear cavity

- Speaker Mass - 8.70kg

Typical Characteristics

		4050	4060
Rated Impedence	Z	8	16	Ω
Reference Efficiency (1W @ 1m)	-	99	99	dB SPL
Usable Frequency Range 1	-	60-3000	60-3000	Hz
Power Handling Capacity 2 (AES)	-	350	350	W
Max Sound Pressure Level 3	SPL max	120	120	dB SPL
Min. Impedence modulus	Z min	6.9 @ 430Hz	15.4 @ 420Hz	Ω
Voice-coil Inductance 4 @ 1 kHz	L e1k	1.12	2.52	mH
@ 10 kHz	L e10k	0.51	1.16	mH
BI product	BI	20.9	28.8	N/A
Moving Mass	M ms	0.051	0.051	Kg