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Post by Percussionista on Jul 17, 2021 11:44:23 GMT -5
In the last week I had a temporary situation for at least 10 minutes where there was very little coming out of the right channel with a desk-top PC setup, DC-1 feeding a pair of Stealth-8 monitors, input originating on my home PC feeding the USB input on the DC-1. The problem is gone (cross fingers) but I never even had a chance to triage the situation, swapping monitors to see if the problem moved with them or stayed on the right side. I haven't detected any loose connections either.
What was happening basically was there was little sound at first out of the right channel, then something like a timpani hit occurs and that became noticeable on the right channel, etc. It was "in and out" with scratchy sound, possibly a volume issue, warm up issue, don't know. I have been "lazy" lately listening to uncritical music or podcasts directly on the computer monitor (a Sony TV) so maybe the good Emo gear was jealous of being sidelined.
It may not be worth speculating but I was wondering if anyone has any strong guesses for me to keep my eyes on this. I believe that the DC-1 runs almost as warm when in stand-by as when on, so I'm thinking it's less likely to be the culprit, if this is related to a warm-up issue (loose internal connection?). If there is an intermittent problem in a Stealth-8 amp, this could be a problem getting a repair being out of warranty (2013 purchase) with parts likely to be not available, and that would be "annoying".
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Post by Percussionista on Dec 10, 2022 13:29:50 GMT -5
Still intermittently happening, but I have triaged the problem, and it is definitely the Stealth-8 monitor. (I routed the left output of the DC-1 to the right speaker, and the right output of the DC-1 to the left speaker, and the distortion, breakup, no-sound issues remained on the right side).
This is intermittent enough, and it usually clears up, so I'm not tearing out any hairs yet, but I wonder if anybody has either run into this, and/or if anybody has found a way (out of warranty) to bypass the internal power amps to run an external amp into the speaker. I realize this is tricky, and I have no interest at this point in doing it, but these are $900 each speakers and the speaker portion of the monitor should last 20 years or more. Of course, the problem could be just a loose connection inside I suppose which would require far less drastic action - but I'm not really equipped to open it up.
I haven't asked Emotiva yet what they think, but was wondering if others have had to deal with this.
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Post by Percussionista on Dec 10, 2022 16:03:31 GMT -5
Ok... it's the woofer amp. The low end is what completely/partially cuts off. Sound still comes off the tweeter.
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Post by jra on Dec 10, 2022 16:46:45 GMT -5
Unfortunately Emotiva don't repair the Stealth 6's or 8's anymore. Shame, I think they're superb speakers (I have 6 x Stealth 8's and 2 x Stealth 6's). Emotiva will supply the schematics for local repair if you ask. I am working with a local repair shop in the SF Bay Area to see if they can fix the cracking problem on my Stealth 6's.
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Post by jra on Dec 10, 2022 16:48:36 GMT -5
I still have hopes that Emotiva will take the Stealth 8/6 chassis and drivers and produce a replacement with modular class D AMPs, a bit like Adam Audio monitors. I'd buy Emotiva rather than Adam in a heartbeat, but currently the only replacement for a non-functional Emotiva Stealth 6/8 is Adam Audio monitors (IMHO).
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Post by Percussionista on Dec 10, 2022 17:26:45 GMT -5
Unfortunately Emotiva don't repair the Stealth 6's or 8's anymore. Shame, I think they're superb speakers (I have 6 x Stealth 8's and 2 x Stealth 6's). Emotiva will supply the schematics for local repair if you ask. I am working with a local repair shop in the SF Bay Area to see if they can fix the cracking problem on my Stealth 6's. Yeah, I would definitely prefer to go this route with a local repair. It would be criminal to toss these!!!!!!
Future-wise, if I had to actually replace these at some point, I would probably not get amplified monitors again. Something like B2+ speakers with the TA-1 (or future equivalent), or just a stereo amp fed from the DC-1. I do run these on my large desk in near-field configuration.
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