Missions sound good but not all the time.

[sparrow]

I got both my Mission floorstanders repaired about a year ago. They now work well about 80% of the time but sometimes theres ever so slight distortion especially on the right channel. This has been present since the main diivers were replaced. They seem to distort at very high frequencies like a mellotron flute and similar sounds. I can live with it but sometimes it drives me nuts. The cause of the original fault before repair was they were cutting out and this was put down to fag smoke drying out the coils.:rolleyes::scratch:

[hifi_dave]

Sounds like it might be the voice coils rubbing, either because the coils have been cooked or the cone/suspension has allowed them to sag.

Fag smoke and dried out coils seems to be a bit far fetched. Why would smoke dry out coils and why are coils wet anyway ???

[DSJR]

John, try rotating the bass unit(s) on the affected speaker by 180 degrees. If it's rubbing, this *may* help.

If the problem is the tweeter, then you may have to get another one.

My advice, get some decent classic speakers to play your EM on ;)

[Stratmangler]

Sounds like it might be the voice coils rubbing, either because the coils have been cooked or the cone/suspension has allowed them to sag.

Fag smoke and dried out coils seems to be a bit far fetched. Why would smoke dry out coils and why are coils wet anyway ???

Not so far fetched Dave - smoke is nothing more than minute particles at high temperature.
Speaker coils themselves may not be wet, but the ferrofluid lubricant is, and if you allow smoke particles to come into contact with it then it can dry out.

Have to smoke a hell of a lot of fags though, and at quite close quarters to the speakers too.

[hifi_dave]

Ferrofluid tends to dry out and/or migrate with time anyway but I don't see why it would cause a driver to 'cut out'. Sounds more like a driver fault/damage to me.

[Reid Malenfant]

The cause of the original fault before repair was they were cutting out and this was put down to fag smoke drying out the coils.:rolleyes::scratch:
:lolsign: PMSL

I have never ever heard of such a thing in my life :eyebrows: It would be far more likely that there was a dodgy connection between the tinsel leads & the connections at each end of either the voicecoil or soldertags. I have seen this first hand myself & was given a so called dead B&W driver, a quick bit of soldering & it was 100% again ;)

Fag smoke.... :lolsign:

Very few bass/mid drivers use ferrofluid anyway due to the large excursions they go through, so as has already been mentioned there is naff all to dry out. Never seen ferrofluid on a mission bass/mid, tweeters yes ;)

[spendorman]

With luck, it could be as simple as a poor connection somewhere.

Years ago I bought a pair of Celestion Ditton 44's very cheaply, there were advertised as having intermittent distortion. Sue enough, when i got them home there was this distortion, sounded a bit like a faulty unit. Inside one of the speakers a connection to one of the binding posts was loose. tightening this, all was OK.

[spendorman]

With luck, it could be as simple as a poor connection somewhere.

Years ago I bought a pair of Celestion Ditton 44's very cheaply, there were advertised as having intermittent distortion. Sure enough, when I got them home there was this distortion, sounded a bit like a faulty unit. Inside one of the speakers a connection to one of the binding posts was loose. tightening this, all was OK.

[Rare Bird]

I did the same with a pair of B&W 'DM2a' a while back spinning em around worked a treat.