as a newcomer i realise this is not about passive xovers but xover geeks maybe the place to ask for pointers.
i believe i need to repair the xovers. if any readers have a reliable pair or a pair for me to have as spares do let me know
salut
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as a newcomer i realise this is not about passive xovers but xover geeks maybe the place to ask for pointers.
i believe i need to repair the xovers. if any readers have a reliable pair or a pair for me to have as spares do let me know
salut
I believe that you're best off to make up a pair using newer parts ( rather than waiting for a reliable pair to appear ).
You can buy parts in the UK from someone like Blue Aran
Here's the schematic ( included within ) the Tech Sheet for the S109
Your le20 tweeters can also be replaced by le25 or le26 tweeters if need be.
Troels Gravesen on his site has published lots of good info on these vintage JBL tweeters.
:)
I notice that on the tech sheet the recommended replacement is 035 TiA.
Plenty of aftermarket versions of this here can anyone vouch for the quality ?
2.2mH inductor cheaper from CPC than Blue aran herehttp://cpc.farnell.com/visaton/5020/...-8r/dp/FT01427
Hi Mac,
Since I have no purchasing experience from the UK, where do think is the best place to buy network parts ( for a UK citizen )?
:)
There used to be a guy but he sold his biz , possibly to Blue Aran. Let me have a scratch about
here you go .... http://audio-components.co.uk/
here's yer 2mH : https://www.hificollective.co.uk/cat...wire-coil.html
12 quid.
Ferrite core from Falcon https://www.falconacoustics.co.uk/au...-inductor.html
5 quid
Capacitors from Falcon https://www.falconacoustics.co.uk/al...apacitors.html
prices don't seem scary
Thanks for ths very much
I sill havent got access to inspect the xovers
i dont want to HaVE to go down below the woofer rather than simply unscrew the xover board.... which maybe bigger than the actual hole....
I have unscrewed it that but the board is glued in very tightly and sealed
Most kind to send such a link re blue aran and schematic
the inestimable troels gravesen
its a few years since i was there re Tannoys.
Thats good news re tweeter alternatives - these seem to fit id like them if others feel its a runner
https://www.ebay.co.uk/itm/Vintage-J...19.m1438.l2649
Ian put a shout out on the forum marketplace. There are plenty of members here with serious squirrel tendencies.
Well the dealer may have sealed them up when refoaming etc took place as there is clear glue/ sealant all around the join between cab and input panel
So no,its not budged a micron..but I will go and have a go the noo
Such encouragement to get robust is so helpful, i have no sense of fragility etc yet
Ta da
Im in... its sunset here so more tomorrow
What i realised is that one has to undo all 6 screws around the panel and not the 4 which look relevant with the lowest 2 some 6 inches away
but they dont look connected to the panel logically..
cheers Macaroonie
couldnt resist going in further
The component on the xover look perfect and i mean perfect, in line, untouched and unstressed ...at least visually and the wax looks perfect and clean as do the cardboard rings around the wax
The fibreglass wadding is undisturbed.
I cannot find my watch screwdriver with the microscopic phillips head to get in the pot knob retaining grubscrew
Can anyone say what is the fixture method as that screw seems unbelievably small...i can hardly see it and im guessing its a phillips ....
By twisting the panel about with the wire on i found the tags coming out of the presence pot... so i sprayed contact cleaner in all 3 of them... more in hope than anticipation...however some cleaner must have got in as the pot now turns very pukka and feel tight and not granular anymore
On sight alone the xover looks good.
So The cab I opened did have the flaky presence knob but it had the louder oomph when playing... so i felt the xover is an issue in the other one ...which i will open tomorrow
I noticed several phillips bolts are missing from the tweeter panel... is such detail listed somewhere i havent looked...?
as i will need to clamp it up again...
hi quality work much in evidence in the wiring and construction