Fusion Electronics Car Speaker MS FR7021 User Manual

MS-FR4021  
Titanium Dome  
120  
MS-FR6021  
Titanium Dome  
200  
MS-FR7021  
Titanium Dome  
260  
Tweeter Type  
Max Power (watts)  
Efficiency (1W/1M)  
87db  
90db  
91db  
Frequency Response 90 – 22kHz  
70 – 22kHz  
60 – 22kHz  
Min. Mounting  
Depth Allowing  
54mm (2-1/8”)  
4 ohms  
71.5mm (2-13/16”)  
4 ohms  
78mm (3-1/16”)  
4 ohms  
Clearance (mm/in)  
Impedance  
MS-FR4021  
MS-FR6021  
0.43  
MS-FR7021  
Sealed Enclosure Volume (cu.ft)  
Sealed Enclosure Volume (litres)  
Ported Enclosure Volume (cu.ft)  
Ported Enclosure Volume (litres)  
Port diameter (mm/in)  
0.07  
0.71  
2
12  
20  
.34  
0.9  
1.25  
9.5  
26  
36  
50mm (2”)  
88mm (3 7/16”)  
50mm (2”)  
25mm (1”)  
60mm (2 7/16”)  
30mm (1 1/8”)  
Port length (mm/in)  
Problem  
No sound  
Solution  
Check all connections from the source unit and  
amplifier to the speaker terminals are correctly  
connected  
Check the connections from the source unit/amplifier  
to the speaker. Ensure the positive wire from the  
source is connected to the positive of the speaker.  
System lacks in bass  
Ensure the speakers are mounted firmly to the  
mounting surface  
Check polarity  
System lacks in high frequencies  
Distorted sound  
Check the bass / treble control settings  
on the source unit  
Check all wiring  
Check that it is not the surrounding panels of the  
craft rattling. Check connections from the source to  
the speaker.  

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