I have a CAV-180 which has had an intermittent problem for several years, and now seems to behave more consistently: whenever the amp has been powered on for 15 minutes or more one of the channels cuts out completely, no sound or distortion. All other channels behave fine. If I turn the amp off for an hour or so and then turn it on that channel will work perfectly for the next 15 minutes, then turn off. I presume the problem has something to do with the temp of the unit when it has been on for awhile but would like anyone's expert help if this can be repaired at home or I need to ship it off.
- 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.
I recently had a similar problem with a Technics amp having an intermittent low or no sound from the left channel. This was traced to intermittent contacts in the speaker protection relay and this may be a good place for you to start looking. Check for dry joints on the relay pc board terminals. The relays can be removed, dismantled and the contacts cleaned with a fine file and contact cleaner.
connect right channel speakers to amp left out if the problem fixed you will have a problem in amp itself. if the problem remained you will have a problem in speaker itself test first with new cable and second with speaker cabinet,
I see now how it could have happened to both amps. Yes, this triple speaker combo will cause this problem.
Next time if you want to run speakers like that, instead of parallelling them, series them. That way the load is balanced between the speakers.
Here is a great primer, dont worry about the calculations and mumbo jumbo, the pictures should tell you what you need to know to get it done.
also when you talk about bridge, that is usually done on the amp rather than the speaker. For example I could have a 4 channel amp, and bridge it to 2 by combining the channels, BEWARE not just parrallell again, there will be a specific order for each different amp and it will be marked. You can also bridge a two channel amp to make one Single channel amp with almost double the power, but again only to one channel, now that its bridged.
Hope that helps once again. I'm going to look up that amp, if you want more specifics.
This sounds like a problem with the protection circuit, and/or the speaker relays. More specifically, a capacitor within those circuits that is not behaving properly. I strongly suggest having it looked at ASAP.