JBL 3678-LF Technical Manual
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JBL Incorporated, 8500 Balboa Boulevard, P.O. Box 2200, Northridge, California 91329 U.S.A.JBL3678-LF REV HPACKAGE WIRING DIAGRAM09-03Technical ManualJBL3678-LFSPECIFICATIONSACOUSTIC & ELECTRICAL SPECIFICATIONS:• Nominal Impedance: 8 ohm• Power Capacity: 300W (Passive) IEC NoiseHF: 50WLF: 600W (Bi-Amp)• Frequency Range: 30 Hz to 20 kHz (–10dB)w/3678HF - Passive Mode• Sensitivity: 98 dB SPL*• Crossover Frequency: 1 kHzSYSTEM COMPONENTS:• Cabinet: C3678• Grille: None• Low Frequency 380mm (15 in.) Paper ConeTransducer: Transducer (2226HPL)• DC Resistance: 5.0 ohm ±10% Aluminum Wire*1 Watt (2.83 V RMS) @ 1 MeterSYSTEM COMPONENTS:(cont’d)• Crossover Network: N3678-LF (129-20015-00)AURAL SWEEP TEST SPECIFICATIONS:A. System Aural Sweep Test: (w/3678HF Connected)7.0V Input, 20 Hz to 20 kHz(Passive Mode)B. L.F. Aural Sweep Test: 10.0V Input, 20 Hz to 1.2 kHzPHYSICAL SPECIFICATIONS:• Enclosure Dimensions: 765mm x 651mm x 292mm D(30.13 x 25.63 x 11.5 in. D)• Shipping Weight: 98 lbs. (44 kg.)WARRANTY INFORMATION:• Refer to Warranty Statement packed with each product.Warranty 59660Literature 980-00018-00Owners Manual 980-00023-00Corner Pad (8)991-00015-00Microfoam (4)74309Carton990-00165-00SCHEMATIC N3678-LF (129-20015-00)Speaker,Low Freq2226HPLCone ReplC8R2226ORN/BLKGRN/BLKGRN+ LIN– LIN– HIN+ HINORNYEL/BLKYEL*JUMPERSL32.0mH L41.1mHR42 6 R52 6 R62 6 R72 6C44.5μFR31 0C210μFC324μFC12.5μFC618μFC526μFL10.6mHL23.9mHGRNT12 + LOUTT11T10T9 – LOUTT8 – HOUTT5 + HOUTT3– TOUT+ TOUTBUS WIRET7T4T6WHTINPUTR1 1 6WHT/BLKB1 B2GRNBLKNOTE: POSITIVE VOLTAGE TO NETWORK (+) INPUT PRODUCES FORWARD CONE MOVEMENT.****NetworkN3678-LF(129-20015-00)SK32 Each |
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