Deaf Row!

[walpurgis]

i see they are still making pdu's etc..

https://www.cef.co.uk/catalogue/prod...w.ds&gclsrc=ds

Yes, I've had Olson on my ebay watchlist for a couple of years and those crop up often.

[Barry]

It's been a long time since I owned an amplifier with a friction locked dual volume pot .

Removes the need for a 'balance' control. It's a neat idea.

[Barry]

i see they are still making pdu's etc..

https://www.cef.co.uk/catalogue/prod...w.ds&gclsrc=ds

Are you sure it is the same company? I have a couple of their 13A socket distribution units and they are made in the UK.

[struth]

Are you sure it is the same company? I have a couple of their 13A socket distribution units and they are made in the UK.

yup afaik anyway. they started in about 1961 working from home. they made various things but are now big in pdu's and sell a lot to the nhs and for servers.

[walpurgis]

Just messing about.

I've got a bunch of decent full range drive units that have not been used, so I'm doing a quick evaluation by mounting them in spare cabinets on temporary baffles, with some wadding added. I'm mainly listening for general tonal character and top end definition. No, I'm not doing anything 'by the book' here, but it'll give me an idea.

First up, 5.5 inch Chinese 8 ohm Aucharm units. These are very nicely built and finished, on a par with Coral and Fostex. They sound very punchy and clear, you'd not guess you were listening to such small units, no top end nasties at all either. Seem easy enough to drive, I think sensitivity is around 90db (I have the details somewhere).



I'll be trying 5.5 inch Canon units later, they should be nice too, I've used them before.

[walpurgis]

Now the Canon drivers. Used by Canon in their own branded speaker systems, quite probably from Taiwan or similar. These are actually 5.25 inch units and barely cover the baffle aperture.

Nowhere near as detailed or vibrant as the Aucharm units, less bass too. Can't really grumble though, I picked these up for a song ages back.

They go back into storage I think. I may have an idea for using them, I built two pairs into big folded horns years ago and that worked very well.



Next, some vintage Eagle/Coral 6.5 inch 16 ohm extended range speaker units, not twin cone. I'll do 'em later.

[Macca]

Now the Canon drivers. Used by Canon in their own branded speaker systems, quite probably from Taiwan or similar. These are actually 5.25 inch units and barely cover the baffle aperture.

Nowhere near as detailed or vibrant as the Aucharm units, less bass too. Can't really grumble though, I picked these up for a song ages back.

They go back into storage I think. I may have an idea for using them, I built two pairs into big folded horns years ago and that worked very well.



Next, some vintage Eagle/Coral 6.5 inch 16 ohm extended range speaker units, not twin cone. I'll do 'em later.

probably the same unit used in the old S35? https://www.stereophile.com/standlou...non/index.html

[walpurgis]

probably the same unit used in the old S35?

I believe it may be.

[walpurgis]

Now playing with the old 6.5 inch Eagle/Coral drivers. I first had a pair of these around 1972, the twin cone version, marketed as the FR65, wish I'd kept them. They are single cone, extended range units with long throw doped fabric roll cone surrounds and are from the DL67 speakers system, I have a few 8 ohm pairs but these are the only 16 ohm ones which date from around 1968. Sounding extremely good, with no colorations standing out, firm and fast with good treble and detail. Could be the best tried out so far.

[walpurgis]

Playing a bit of classical through these now. Ina Boyle, Symphony No.1 "Glencree", sounds lovely. Great timbre, depth and detail, good weight too. I haven't even lagged the boxes properly or tuned the bass yet. Very nice.