View Full Version : what model are these mordaunt short speakers??
took a gamble and picked them up today in a charity shop for £25, does anyone know what model they are please?
pic is from the web but mine are the same.
http://i1267.photobucket.com/albums/jj548/jamiecreig123/P4130012_zps2afab2b2.jpg
Are you sure they are Mordaunt Short speakers? Is there a label on the back near the speaker terminals?
walpurgis
13-12-2014, 20:09
I remember those, but not the model number. I've got the original brochure for that series somewhere, if I can find it, I'll be able to tell you which ones they are.
cheers mate,they are pre pageants i reckon,shame both tweeters are blown,either that or they are awful sounding!
walpurgis
13-12-2014, 20:26
They are the MS 235. Yes, they were pre Pageant. I've found the brochure and a review reprint from 1972, which rated them well. They are definitely worth repairing. Those soft dome mid/tweeters are Peerless if I'm right (should be obtainable used) and the super tweeters are Coles/STC units. The power rating is 35 watts and they were £111 a pair (a lot for a compact speaker back then). It would be worth checking all connections and crossover components before splashing out on replacement drivers.
The Coles tweeters are available still (they're black fronted these days) and although I'm certainly wrong on this, those tweeters do look rather like the rectangular plated Audax ones, although if that bass unit is from the KEF B200 family, the tweeters are huge and not the ones I'm thinking of, hence the Coles super tweeter.
My first thoughts are IAS or RAM. It'll be very interesting to find out who made them :)
[edit] - I was wrong above. Thanks for confirming what they are :)
dantheman91
13-12-2014, 20:39
Hmm IAS :)
Must give mine a run sometime :lol: big buggers though.
Martyn Miles
13-12-2014, 20:48
They are the MS 235. Yes, they were pre Pageant. I've found the brochure and a review reprint from 1972, which rated them well. They are definitely worth repairing. Those soft dome mid/tweeters are Peerless if I'm right (should be obtainable used) and the super tweeters are Coles/STC units. The power rating is 35 watts and they were £111 a pair (a lot for a compact speaker back then). It would be worth checking all connections and crossover components before splashing out on replacement drivers.
A friend had a pair of these. I thought they were excellent. Later, when I bought BC1s, he purchased my Kef 104s.
The '235s and the '104s both had their strengths in my opinion, but to my friend and I the '104s were the better loudspeakers.
Nevertheless, I do think these would be worth restoring...
nice one ! cheers guys,
here's pics of my actual ones,the middle tweeter is indeed made by peerless.
so its good to know they are worth repairing,how would they compare to pageants i wonder?
http://i1267.photobucket.com/albums/jj548/jamiecreig123/20141213_201832_zps3f89c7cf.jpg
http://i1267.photobucket.com/albums/jj548/jamiecreig123/20141213_201757_zps78e1c29a.jpg
http://i1267.photobucket.com/albums/jj548/jamiecreig123/20141213_201858_zps993c946e.jpg
http://i1267.photobucket.com/albums/jj548/jamiecreig123/20141213_201945_zps61840c1c.jpg
Dan :)
You really should upgrade the styli in your decks to at least '20' level Dan (tries not to adopt a hectoring school-master tone but fails miserably as usual :rolleyes: ). The difference to both decks' sonics will be significant I promise you and the Dual can then rightly take its place in the main system :lol:
woofers have sticker marked kef2 and A2573,and opposite SP1014
here's a pic of the crossover,i think if these speakers are worth restoring i'll have a go myself replacing the caps,the crossover circuit boad sits behind the baffle plate mounted on 4 rubber buffers.
any electronic wizards care to comment on the components as they mean f-all to me lol.
the super tweeters appear to work and test ok with the volt meter,what is the point of these as they are so quiet??
http://i1267.photobucket.com/albums/jj548/jamiecreig123/20141214_100028_zps38b30571.jpg?1418551945006&1418551948040
The Eri capacitors are/were very good sounding tbh. I had several replaced in some Fisher vintage receivers and their film caps were imo better in circuit than the ultra expensive caps sold presently. I ended up replacing the electrolytics just for safety. The resistor seems fine visually, but I can see some rust in the ends of your caps, I'm really doubtful that both tweeters are shot, I'm guessing that 1 of the capacitors failed in both networks.
Also, the Coles are very thin souding. The ones on my DM1 are there just for the ultra high frequencies/harmonies (the Celestion does all the work for them), so, given the presence of the peerless tweeter, make sure it's not just a design issue you're not used to until now.
ps: I love my Pageants 2, I've lost count how many speakers I had/have but since I sold the 1st pair I didn't rest until I got them again - they're wonderful!
funny you should say that as i cant get a reading on the one inline with the peerless tweeter,i think the tweeter is blown as when connected up directly to my amp there's no sound. i should point out a complete novice so i could be doing something wrong.
... as when connected up directly to my amp there's no sound...
Just never conect a tweeter unit directly to the amp without any sort of filter cap in the middle, if the tweeter isn't already fried, it will be, for sure!!
Mr Kipling
14-12-2014, 11:08
To be certain it's blown, I'd, very gingerly, clean the lead-out wires where they exist the coil, and try a reading from there to make sure there isn't a break in the sleeving or the connections aren't corroded.
Ali Tait
14-12-2014, 11:10
Yep, you may well have fried the tweeter by doing that.
To be certain it's blown, I'd, very gingerly, clean the lead-out wires where they exist the coil, and try a reading from there to make sure there isn't a break in the sleeving or the connections aren't corroded.
nice tip mr kipling,ive just tried it and got a reading of 6.5,the tweeter lives!
Martyn Miles
14-12-2014, 13:10
Re. Peerless tweeters, you can sometimes substitute an Audax by making changes in the crossover.
I am unsure of the crossover frequencies of the 235, but I expect they could be found on the Internet.
The good thing about Audax is that Falcon Acoustics can supply new voice coil/dome assemblies, or complete tweeters.
M Miles.
yes i was looking at option like that,i fear though change crossover frequencies is way above my head,i have spotted a few ms speakers on the bay that i could use the tweeters from,that may be cheaper than the outlay for soldering iron etc.
just a little update,
seeing as both peerless tweeters were buggered i bought these on ebay for £15,they are mordaunt short ms 079.
the tweeters appear to be the same as used in the 235's and both are reading fine on the tester.now i just need a coles 4001,a soldering iron and a handful of capacitors! lol.
http://i1267.photobucket.com/albums/jj548/jamiecreig123/_57_zps88cb1d0a.jpg
Hi Jamie
as discussed, pop the drivers in the post to me (tweeters) and I'll do a full frequency sweep impedance test on them for you free of charge and provide you with the plots for each. Sometimes, if a cap has failed or an amp has been clipping you could have damage whilst measuring ok-ish on a meter is best tested using in impedance plot for the frequency sweep which will clearly show up any response anomalies. I'd hate to think of you investing time and energy on a refurb not really knowing of the tweeters are healthy, so best be sure.
If the main drivers are labelled "SP1014" then they're KEF units, as used in the Roksan Darius, varius Linn speakers and others, doped for a high-ish crossover point and are quite reasonable sounding units.
cheers paul,
they will be in the post next week.looking forward to hearing your work on my pageant 2's :)
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