Hi. I have a Yamaha PAS500 rig with two blown HF compression drivers. I'd like to know the tech specifications of these drivers to source replacements but can't find anything on the Yamaha site. Any ideas?
An expert who has achieved level 2 by getting 100 points
An expert that got 5 achievements.
An expert that has over 500 points.
An expert who has answered 200 questions.
Re: Blown Compression Drivers
This unit features 2 -10" passive speakers and HF horn/driver. If you are blowing the HF driver, the problem is with overdriving the high range of EQ. At sustained high volumes, the voice coil of HF driver will overheat and open. If you still have effective warranty, ask Yamaha to replace drivers. Fixed,-- back off higher frequencies of EQ, turn down volume.
- If you need clarification, ask it in the comment box above.
- Better answers use proper spelling and grammar.
- Provide details, support with references or personal experience.
Tell us some more! Your answer needs to include more details to help people.You can't post answers that contain an email address.Please enter a valid email address.The email address entered is already associated to an account.Login to postPlease use English characters only.
Tip: The max point reward for answering a question is 15.
Hi Anonymous. You have a few choices. You can download a PDF of the service manual ,or you can take the cover off and locate the fuse yourself. Chances are it may be more than one fuse blown. Some fuses are located under circuit boards..hard to get to. The service manual should tell you what kind of fuse you need. If you can`t replace the fuse yourself,you can always take it to an authorized service tech.
you need to check the power supply input of your amplifier using a multimeter set your tester into a dc voltage reading.then measure the power input you must have a DC voltage supply reading..open the cover check the fuse an open fuse will turn the unit to no power.there are causes of blown fuse a shorted power transistor at the circuit will blown the fuse you need to replace faulty transistors before putting up a new fuse...check also the diode at the power supply section ,faulty diode could lead to the same problem..
You may have blown the inline fuses for output sound. Amps have alot of fuses under the hood. take the amp cover off and check all fuses are not blown / wire broke inside fuse. Some fuses are hidden under circuit boards on some amps, check everywhere possible to check all fuses. If all fuses are fine and no broken wires inside them, you may have loose connection where your speaker wire ports are inside the amp. Check they arent black or loose. if they black they are blown as there usually soldered (a silver colour)
Hi, Very unlikely your repair of the RCA caused any damaged as preamp shouldn't cause big issues in the amp and would say you right that the problem existed already. The resistor is 100 ohm 5% but there is almost definitely blown outputs to have caused it. Most electronic places should be fine to test advise and repair. Would suggest outputs and drivers, but unfortunately not always that simple. Best of luck