Rogers LS4a ( Sold )

by chewkwokhon Mon Jun 13, 2016 11:43 pm

Rogers LS4a Speaker
No. of units– one pair
Status: Used
Country of Manufacture: Make in England
Year of Manufacture: Unknown
Condition: 6/10, working condition
Accessories: original fabric grille
Note: Tweeter is replaced with a Fabric Dome
            Woofer is original
            Crossover is original
Item location: Kelana Jaya, Petaling Jaya.
Price: RMxxx
Payment Method: COD
Contact: 019-3384067
                 Chew

Specifications here:

Frequency Response: 55 Hz - 20 kHz ±2 dB

Impedance: 8 Ω Nominal

Sensitivity: 88 dB at 1m for 2,83 volts input

Power Handling: 150 watts (unclipped programme)

Recommended Amplifier Power: 15 - 100 watts per channel

Maximum Sound Pressure Level: 105 dBA (pair at 2 m)

Drive Units:

Tweeter : ------------

Bass/Mid-range: Rogers 205 mm Polypropylene coned of advanced acoustic design , with high flux magnet and Kapton voice coil former.

Crossover: 8 precision elements crossing over at 3 kHz at 18 dB per octave

Bass Loading: Acoustic suspension to form a well damped Butterworth 2nd oreder maximally flat alignment with a -3 dB point at 55 Hz.

Distortion: Less than 1% 2nd and 3rd harmonic 50 Hz -20 kHz at 90 dB S.P.L.