Question about JBL GTO 301.1 Car Audio Amplifier
I have the JBL gto 301.1ii amp. i only have remote power and ground hooked up and its in protection mode never comes out i really need this amp workin due to buying ma audio subs yesterday any help will be great thank you in advance
Check the voltage at the amp. It's possible that the voltage is either too high (above 16V) or too low (below 8.5V). Also make sure that the amp case is not grounded. If these check out OK, the most likely cause is that the amp itself is defective and requires service.
Hope this helps.
Posted on May 27, 2009
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Posted on Jan 02, 2017
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You need to check the DC voltage across the B+ and ground terminals. You also need to check the DC voltage across the remote and ground terminals. If the voltage is less than 11 volts, you need to check the B+ supply and remote wiring for breaks or open fuses. You should also check the ground connection to confirm that it's not loose.
If the voltage is OK, the output transistors are likely shorted.
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