HARMAN KARDON BETA20
Manual de Servicio

Technical Manual

Beta 20
ACOUSTIC & ELECTRICAL SPECIFICATIONS: � Nominal Impedance 8Ω � Max Amp Power 150 watts* � Frequency Response 58Hz � 20kHz (±3dB) 52Hz � 40kHz (�6dB) � Sensitivity 90dB (2.83V @ 1 meter) � Crossover Frequency 2.4kHz; 12dB/Octave SYSTEM COMPONENTS: � Cabinet � Grille Black (for BLK) Gray (for BE & CH) � Low-Frequency Transducer AURAL SWEEP TEST SPECIFICATIONS: � System Aural Sweep Test 6.0V Input 50Hz to 20kHz � L.F. Aural Sweep Test 5.0V Input 50Hz to 3kHz � H.F. Aural Sweep Test 2.83V Input 2kHz to 20kHz PHYSICAL SPECIFICATIONS: � Dimensions 13-3/4" x 8-7/8" x 13" (H x W x D) (350mm x 225mm x 330mm) � Weight 20.7 lb (9.4kg) Each 40 lb (18.8kg) Sold in Pairs WARRANTY: � Refer to Warranty Statement packed with each product. * The maximum recommended amplifier power rating will ensure proper system headroom to allow for occasional peaks. We do not recommend sustained operation at these maximum power levels.

DC Resistance � High-Frequency Transducer

DC Resistance � Crossover Network

Beta 20 (Not for Sale) 352006-003 352006-004 6-1/2" (165mm) CMMD, � magnetically shielded 351505-001 4.6 ohms ±10% 1" (25mm) CMMD, � magnetically shielded 351572-001 3.5 ohms ±10% 351570-001

PACKAGING
22 23 24 19

Beta 20 WIRING DIAGRAM
HIGH-FREQUENCY TRANSDUCER 351572-001
YEL/BLK �
LOW-FREQUENCY TRANSDUCER 351505-001

5
� BLK

YEL
+

GRN
+

+ �

22 23 24

GRN/BLK RED

18 20

CROSSOVER NETWORK 351570-001

Beta 20 SCHEMATIC
+
INPUT
L1 2.0mH C1 12uf 100V 15" GRN

.250

5 21
�

L.F.
.205

15" GRN/BLK

17 Legend on Page 2

R1 2.5Ω 10W

15" YEL C2 2.2uf 50V L2 0.6mH

.205

H.F.
15" YEL/BLK

.110

Infinity Systems, 250 Crossways Park Drive, Woodbury, New York 11797
6/04

Beta 20