Hot Tub; J-300 Series; Jacuzzi J-300 Series Manuals Manuals and User Guides for Jacuzzi J-300 Series. We have 11 Jacuzzi J-300 Series manuals available for free PDF download: Installation Manual And Use & Maintenance, 2011 Ozonator Not Working. 40. 2012+ CLEARRAY Not Working. 41. Weak or Surging Jets. 42. Test the mating spade connectors (while connected) between the stereo power supply and the deck for 12-15 volts DC. If voltage is unstable (fluctuating) or inadequate, replace the power supply. 4. If the power supply and the fuses all test properly in steps 1-3, and the deck does not turn on, replace the deck. Turn on the spa. Test remote by aiming at speakers. Does it works? If so, then the problem is in wire harness or speakers. Remove old speakers and try with new harness. If the remote works with old speakers, then there is a bad harness. If the remote is not working, then a speaker(s) is bad. Is there nothing anywhere on the spa that states what wattage they are? If you do go ahead and wire them up, at least if you have a seperate volume control for them you can keep them low, preventing them from being blown. Quote Roger Inh4b.