The last Quad amplification I owned was a 22 + II set over thirty years ago.Quote:
Originally Posted by dantheman91
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The last Quad amplification I owned was a 22 + II set over thirty years ago.Quote:
Originally Posted by dantheman91
You know what? This is now sounding very nice indeed. Maybe I'm just getting used to the way it sounds, but it just seems to get better and better.
Playing a bit of Shpongle at the moment and the way it comes across is bloody amazing! :D
A bit of fun? The next walpurgis project. A rather tidy Connoisseur BD1 turntable paired with a Jelco SA-5 arm.
http://i65.tinypic.com/2n850me.jpg
I have a couple of good lift off acrylic lids the right size, so I'll make a plinth based on the lid dimensions in which to house the BD1. There will be a removable armboard included in the design. Only thing is, How to mount an arm for which I have no template? Been down that road a few times. It will be done!
Good little turntables these (despite what a certain beoperson may say about them :D).
Pete Riggle Audio pages are a good read Geoff
Not seen that before. Looks interesting.
I think I'll have a measure up of the lid and TT and rough out a plinth plan tonight. Shouldn't take long. There's a good timber shop about two hundred yards from here who don't charge the earth. I reckon I could have this up and running in a few days. I've even got some nice walnut veneer for the base and some big Sorbothane feet that will do nicely. Plenty of spare decent screened signal cable too.
How are you getting on with the 306?
S.
It's rather nice Shane. At least as good as I'd expected.Quote:
Originally Posted by southall-1998
Better change your name to Walpurgis_306 then ;)
S.
Oh Dear. What's happening now?
These have just arrived. A pair of totally original and untampered KEF Corellis.
http://i67.tinypic.com/2rysgvc.jpg
I've been after a pair for the last couple of years. Usually, they have been overpriced, a bit rough or too far away (I don't have speakers delivered, like turntables, they get wrecked). These were reasonably priced and only ten minutes away from me.
They sound superb, really transparent and clean. I've always regarded the Corelli as the best sorted of the earlier KEF first and second 'C' series. Better than the 104 variants too. If you are familiar with the LS3/5a sound, well that's more or less what you get here, but with bass!
I'd swear they have never been apart. But, I will disassemble them to renovate the boxes, which have some minor marks. May change the caps too and upgrade the wiring.
At 84db sensitivity they may take a little driving, but then, my Celestion SL600Si were the same and my 15 watt valve monos drove them loud enough.
96db i tink the coreli was. quite liked them myself ...they look a smashing set mate
Quoted as 19 watts for 96db @ 1m in anechoic conditions. According to my working out that's around 84db.Quote:
Originally Posted by struth
They lok OK, but will look like new very shortly! :)
Not a bad find - I think you mean 84dB for the sensitivity though?
Quite right. Dunno why I bunged 94db in. :rolleyes:Quote:
Originally Posted by Macca
Specification: Corelli
System type: Two-way, bookshelf/stand-mount
Enclosure type: Closed box
Size: 470 x 280 x 220 mm (18.5 x 11 x 8.6 inches)
Weight: 9kg (20 lb)
Input Impedance: 8 ohms
Rated maximum power: 50W programme
Amplifier Requirements: 25-50 watts into 8 ohms
System resonance: 58Hz, Q=1.1
Frequency response: 50-30,000Hz +/-3dB
Sensitivity: 19 watts for 96dB at 1m and 400Hz in anechoic conditions
Crossover Frequency: 3500Hz
Finishes: Walnut or Teak
Grille: Mokka brown cloth
System: SP1051
Drive units: B200 bass unit (SP1063), T27 tweeter (SP1032)
Crossover: SP1052
Personally I'd have thought mid 80's myself
Later seventies I think Grant, the Corelli was the replacement for the Chorale. (may have a review somewhere).
no, I ment sensitivity .. yes, early to mid 70'sQuote:
Originally Posted by walpurgis
:D Didn't realise what you meant.Quote:
Originally Posted by struth
96 dB for 19 watts makes them about 80dB for one 1 watt.
How did you get there Martin?Quote:
Originally Posted by Macca
They quote 96dB from 19 watts at one metre. So deduct 3dB for every halving of power.
That's exactly what I did. I made it just over a watt = 84db.Quote:
Originally Posted by Macca
Yes you're right. Must have deducted once too much.
Well anyway. They seem to drive alright. Need a little more volume than the Tannoys obviously. Well impressed with the sound quality via the Quad 306. I'll have to hitch them to an SM-70 and see how that pans out. I suspect it'll be very good.
Very nice Geoff, what are you going to do with all your (spare) kit?
:D
I'm going to do an Audio Al and keep it all to look at! :DQuote:
Originally Posted by Firebottle
Youd never catch me doing that;)Quote:
Originally Posted by walpurgis
Or me...
Blimey! Been listening for a while and got the system nice and warmed up with these little KEFs. This is sounding seriously good. I'm getting mid depth and transparency on a par with the big Tannoys. No lack of bass or scale either. Top end is much cleaner than I remember from the T27 tweeter, but that may be down to the improved front end and the amplification I'm using these days. Still using the Quad 306 actually. Felt no great need to go back to the Class A stuff yet.
I like the old Coda III from late 70s, are these from the next range up? Or earlier? Coda III were a bit veiled in the mids but good tone and balance.
mid 80's the coda3. 87 db, and decent speaker
Right. That's the drive units out of the Corellis and any chips or knocks on the woodwork filled. They weren't bad really, the worst being spike marks on the bottom, but they'll look like new when I've finished. I'll get the meter out later and check the crossover cap values. Then rub down the cabinets and re-polish.
http://i67.tinypic.com/v5xpv9.jpg
http://i67.tinypic.com/25us3zk.jpg
Youve been busy. Look forward to the finished job
They weren't as scruffy as the Cheviots were when I first got them and those came up very well.
Fortunately, the grille cloths on these are mint. Saves me a bit of bother. I may add another thin layer of gasket when re-fitting the drivers, seeing as the originals are forty odd years old and probably a bit compressed. I'll leave the old ones on though, as they are intact.
Been looking for a pair of 24" stands for these. Nothing suitable locally yet. I might get lucky at the big boot sales, which are kicking off about now.
Used to have a silver set about that height. Not sure what happened to then actually. Might be still with me. Dont recall giving them away.
Here's a little tip for anybody re-fitting speaker units into their boxes. If you have any that screw directly to the woodwork. Put a drop of PVA glue into the old holes, poke it down and work it around with a cocktail stick or similar, then wipe off any surplus and let it dry. This stabilises the wood at the holes and reduces the risk of them stripping out as you tighten the screws down. As can often happen.
Good tip that folks...but do wait on it drying or youll never get them out again;)Quote:
Originally Posted by walpurgis
The PVA has little affinity with metal and will not really adhere.
Better still iMO is my now standard method of using a scriber coated in superglue which readily runs into the wood garin and dries quite quickly due to the high number of hydrogen atoms in the cellulose of the wood.
You then get a perspex thread which is really strong, but you must allow the glue to dry, determined by smelling it, when wet the fumes are really eye watering. Remove external excess with a cotton bud and see the smoke it froms due to the intense reaction.
Yes. I've also used the superglue method. Both ideas work.
as does a good old match glued in .
I got the Corelli baffles and backs resprayed in satin black earlier. May yet give the veneer another fine rub down and a final coat of finish.
http://i63.tinypic.com/e8lpi1.png
Got a dull headache now. Happens every time I use paint that gives off smelly fumes. :rolleyes:
Looks great mate. Smashing. Will be one of the best pairs in country.
Hopefully! :)Quote:
Originally Posted by struth
Getting there.
After letting the black parts dry properly, I re-inspected the veneer finish and decided the satin acrylic had sealed the surface adequately, so I rubbed it down all over gently, first with a red (fine) Scotchbrite pad, then some fine wire wool and then I applied heavy furniture wax. This was followed with a polish once dried and it came up just as I wanted. Fairly lustrous, but not over glossy. Just the job!
http://i63.tinypic.com/t4xmkl.jpg
I've also measured the crossover cap values. They seem all over the place. Not entirely surprising for forty year old electrolytics. I'll order some replacements.
http://i67.tinypic.com/nb5cn4.jpg
They came up good. Lovely finish.
As I was at a loose end, awaiting capacitors for my Corelli renovation, I had a ponder about a pre-amp to go with the Quad 306. Well, this is now on its way to me.
http://i67.tinypic.com/b3ojdz.jpg
Yes. It's a Moth Series 30 pre-amp. But not the usually seen passive unit. This is the very rare and extremely good active pre-amp. It should be an excellent match to the Quad. As soon as it arrives, I'll give it a basic service and respray the wood front panel in black to match the rest of my gear. If you've not heard the Moth amps, well, they are nothing short of excellent! The MM/MC phono stage is a wonderful sounding little device. I had one for years.
It's a Stan Curtis design and here's a bit from him about it:
http://i63.tinypic.com/5tuqdk.png
This is just a bit of fun really. I already have two extremely good pre-amps! :D
That's a fantastic finish you have got on those cabinets, Geoff. But what happened to the white-ish patches on the woodwork (filler?) evident in the photos in post 282? Why doesn't it show through the new satin acrylic and wax finish?
IB
Yes it was filler, but most of it was smeared excess. The repaired areas were actually very small. They were coloured to match the adjacent veneer shade. The cabinets were pretty sound when I received them, but I'm fussy! :)Quote:
Originally Posted by Infinitely Baffled