Hello - I think but not 100% sure, but both of the tweeters have gone in my SL2s.
The last time I listened was midweek and they sounded great, Saturday night, completely off. If I disconnect the cables going to the bass unit nothing comes out of the speakers.
As far as I’m aware we haven’t had a power cut or anything. The system is turned on all the time. Does anybody have a plausible explanation?
I do have some SBLs in the loft but too heavy to get down on my own right now so I can test with them. I have also ordered replacements from Willies, but that’s going to be a right faff as I’ll need to buy solder, soldering iron and 25cm runs of cable going from other posts about SL2 replacement tweeters, as well as modifying the armature that holds the tweeters.
Rest of system is 500/552/zenith 3/phoenix net/mscaler/TT2. Not active.
Both tweeters going off simultaeously sounds unlikely. I would look elsewhere, as suggested, step by step.
Can you borrow some speakers easily? Of course you could use the SBL. Also, assuming both are in passive form you could swap the external crossovers from your SBLs onto the SL2s. This would exclude one element of the system. Wouldn’t explain why both sound off though.
Good ideas. I’ll rebuild the lot. I can remove the innuos phoenix and mscaler too, it’ll work without those boxes. If the rebuild doesn’t work I’ll get the SBL out of the loft. I did try swapping out one PAXO, that didn’t make any difference. I’d almost rather it was the tweeters than one of the big boxes failing in some way…..will update in a day or two. thanks
Still borked. I got a single SBL down with ropes and yeah, the tweeters are blown. Its all very strange. The 552 mutes on reboot too so should have protected if a transient power cut.
Its not been a good week. I’ve broken my new Dell U2725QE monitor, the kettles broken and now this……its like buses….
As @BruceW has recorded, it’s very strange to lose both tweeters like this – the only time I’ve read about some similar, is when someone else in the house put a system in to ‘party mode’. Also, I’m not 100% sure if the voltage blip is very short, whether a 552 comes back in ‘mute mode’.
@Richard.Dane – Richard, any ideas how both tweeters on SL2s fail at the same time (fed by 500/552)?
I will replace them and see how it goes. I could understand the party mode if my son was around but he started Uni a few weeks ago. We have cats too. But the volume control wasn’t anywhere odd.
I’ve only ever had a fault like this once before, when lightning hit my house and blew up my 140 and epos es14’s in the early 90s. I’ll get the other SBL down now
Picking up on someone else’s comment, have you just changed from active, and found no sound from tweeters since? If so most likely cause would suggest itself as passive XO connections to speakers. And if actually blown, any possibility that you may have connected up fullrange without passive XO in place? If so, bass would go across tweeters and blow them instantly.
All working again. I did the mod, I have to admit I spent far too long thinking about it. In reality fixed quite quickly, new tweeters from willies, they look much better than the old tired ones. I used a round file to make the holes for the new terminals with the tweeter stand clamped in a vice. A bit of black spray paint to tidy up. Although I bought some replacement internal cabling I just used the old wiring, it reaches with a few mm spare. Initial thoughts are very positive. I still dont know what happened. I’ll try to remember to mute it all when I’m not listening. Hopefully its a black swan event. thanks everyone and happy listening
I understood that, but, puzzling over why/how both tweeters could have died, I picked up on a comment someone had made about you formerly having run active? If that was the case I was wondering if there was any possibility that in changing you might gave connected to the 500 without having reinstated the speaker’s passive XO which would have been removed or bypassed for active operation, or otherwise connected wrongly, because if so and there was a full range signal, or even hum, that would very likely fry the tweeters even if only momentary.
Ah I see - good suggestion, but no, all working fine passively for over a year, nothing changed in the system, nothing unplugged or modified, then week before last suddenly broken.
