Jbl arcsub 8 mk3 service manual

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jbl arcsub 8 mk3 service manual

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Powered Subwoofer ARC SUB 8 2 WARRANTY IMPORTANT SERVICE NOTES: When testing the ARC Series amplifier, a load must always be connected to the output terminals , whether the woofer, or a 4 to 8 ohm resis- tive load. All AC powered test instruments (meters, oscilloscopes, etc.) must have a floating ground, i.e. be connected to an isolation transformer.