FRS 7 - 4 Ohm

Visaton Speaker Driver - FRS 7 - 4 Ohm Full Range
Art. No. 2011

Visaton FRS7 - 4 Ohm Full Range Speaker

Characteristics and Sound Properties
6.5 cm (2.5") fullrange speaker with balanced frequency response and very good highs. Especially suitable as built-in speaker for music reproduction and as driver for 100 V network column speakers. Outstandingly high efficiency compared to the small size.

Typical applications:-
- Narrow network column speakers
- Control speaker for electronic devices
- Model construction
- Electronic musical instruments

Attributes:-
- Water proof cone
- Metal basket
- 100 °C temperature resistant

Technical Specifications

Rated power	8 W
Maximum power	15 W
Nominal impedance Z	4 Ohm
Frequency response	200–20000 Hz
Mean sound pressure level	88 dB (1W/1m)
Opening angle (-6 dB)	149°/4000 Hz
Excursion limit	±1.5 mm
Resonance frequency fs	250 Hz
Magnetic induction	1.2 T
Magnetic flux	160 µWb
Height of front pole-plate	2 mm
Voice coil diameter	14 mm
Height of winding	3.5 mm
Cutout diameter	61 mm
Net weight	0.2 kg
DC resistance Rdc	3.6 Ohm
Mechanical Q factor Qms	3.21
Electrical Q factor Qes	1.96
Total Q factor Qts	1.22
Equivalent volume Vas	0.3 litres
Effective piston area Sd	22 cm2
Dynamically moved mass Mms	0.8 grams
Force factor Bxl	1.7 Tm
Inductance of the voice coil L	0.3 mH
Temperature range	-25 ... 100 °C

Driver Dimensions

Loudspeaker Driver Dimensions and Measurements - all dimensions in mm (approx.)

Frequency and Impedance Response

Loudspeaker Frequency and Impedance Response Graph

Directivity Pattern

Loudspeaker Directivity Pattern (on and off axis response)