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One of those weeks

 
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NickS
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Joined: 14 Jan 2008
Posts: 10571
Location: Nr. Basinggrad, UK

PostPosted: Wed Dec 11, 2019 4:38 pm    Post subject: One of those weeks Reply with quote

I dragged my HH VS bass combo out of the garage and found it was slightly buzzy. No, not a wasp nest. I dragged the vintage HH speaker out and it got worse. Apparently leaving them in a damp place for a while can result in corrosion in the voice coil gap, so it's game over; a shame given that apparently they were very sensitive for their day; I've seen a figure of 101 dB (presumably 1W, 1m). Nobody seems to have the Thiele-Small parameters for this speaker so I thought I'd try to establish the free-air resonance frequency and maybe the Q.

Of course my old oscillator needs two PP3 batteries. I have some rechargeables. Turns out only one of the 3 is any good. Maybe I could do something with this old multi-rail power supply (Android wants that to be a multi-racial power supply). 5 minutes later...


That's the input filter cap on the PSU, that was.. I might take a break from this after fixing the PSU.
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NickS
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Joined: 14 Jan 2008
Posts: 10571
Location: Nr. Basinggrad, UK

PostPosted: Mon Dec 23, 2019 6:36 pm    Post subject: Reply with quote

Well, I settled for one of those reasonably-priced QTX bass speakers from whybuynew (though it is new, apparently).


I notice it does seem to have taken a slight whack at some point, but I'm hoping that it won't affect anything.


I've also replaced the cracked and broken plastic and steel handles with reasonably-priced all-steel steel handles from Blue Aran


This is where one of the original wheels tore out.. not quite sure how to address that.


This is where the replacement tore out....
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