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Heresy II's crackled awhile and then died?

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Hello everyone,

 

I am totally new to the technical aspect of speakers and other audio equipment so bear with me. I have just recently inherited a pair of Heresy II speakers on risers as well as a Denon PMA-737 receiver. I absolutely love the set up and want to keep it for good. So here's the issue:

 

At first everything worked fine and then in one of the speakers the mids/lows started to crackle even at low volumes. It got bad enough that I just unplugged one and used the remaining good speaker. The same thing started to happen to the second one but didn't get that bad until one day there was a quiet pop and all of a sudden the only signal coming out of the good speaker was extremely faint and heavily distorted/crackly. At first I though maybe there was a problem with the signal coming from the receiver, but I plugged my headphones in directly and there was no problem that I could tell; granted I don't know how to do any tests on a receiver.

 

I would prefer to learn how to do this myself but I am also willing to take it to a pro if necessary. So what are some tests I could perform or potential fixes to this? What tools or other materials would I need? Layman's terms are appreciated! I don't even know how to open them up to have a look inside to take pictures for you all so help there would be appreciated as well.

 

I would greatly appreciate any help. Apologies if I overlooked a thread already answering some of this. If no one has the time to discuss in detail, links to helpful resources are an appreciated substitute. Thank you!

 

 

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Welcome to the forum.

 

I suspect the receiver, rather than the speakers.  The fact that the headphone output still works, does not rule out the receiver as the culprit.

 

Do you have access to another receiver and/or another pair of speakers?  If you do, connect test speakers that are known to work to the outputs of your receiver.  If they too  do not work, the problem is the receiver.  If the test speakers work, the problem is your Heresy IIs.  The test speakers can be simple raw drivers, just as long as you know they operate.  

 

In the alternative, connect the Heresy IIs to another receiver that is known to function.  If the speakers work, the problem is your receiver.  If the speakers don't work, the problem is your speakers.  

 

Good luck and let us know what you find.

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I do not have another receiver or other speakers. Is there a substitute I could use to do the same tests? Or should I just find a cheap speaker at a thrift to test it?

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Beg, borrow or steal a functional speaker to connect one channel at a time; a car speaker, computer speaker, nothing fancy, or go to a thrift store to buy a cheap system.  Use it in your garage when done with the tests.  

 

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10 hours ago, DizRotus said:

I suspect the receiver, rather than the speakers.  The fact that the headphone output still works, does not rule out the receiver as the culprit.

Correct, the headphone section is(should be) a different signal path than the inputs to speaker terminal outputs.  One should not affect the other.

 

Bill

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Hello everyone! Apologies for the extreme delay, I had my repair guy look at everything and somehow some wires touched which blew all four output (drivers?) on my Denon. Switched to a new but crappier receiver and all seems fine. I don't think anything inside the speakers touched but can you think of anything in the speakers that could have caused that? My guess is somehow something in the receiver or my cables touched something somehow, but I wouldn't mind opening up the speakers to checkfor anything that might be loose. Is that easily done? If so, how? Again, apologies but I appreciate the patience!

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Check for a dirty speaker relay contacts.

 

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Sounds like you had speaker wires touching each other. Make sure when you hook wires to receiver and speakers no stray wires are touching each other. I doubt it was wires inside speaker.

Or the Denon just went out on its own. If the other one is working fine.

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So since I used loose wire, I'm guessing that somehow it touched. I don't know why the Denon would have gone out on its own... so I'm getting newer thicker wire and i'm putting some nice connectors on them. So the question is, do I spend the 200 I was quoted to repair the Denon? Or do I get a new receiver. Any suggestions there?

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Thanks again by the way for all of the advice, you guys rock! It certainly helps to communicate rather than have all this bounce around in my head :)

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At acceressories4less you can get a refurbished Integra AVR for 300 to 400 bucks or refurbished integrated amp for 200.. I got one recently still learning how to use it but it seems awesome so far. This is my first AVR so steep learning curve,,,lol.

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