What are they game again ??? [Archive]

andyrlb

11-06-2018, 17:10

They’re pretty big 780mm X 420mm x 360mm, the cabinets are 28mm thick ,they weigh a ton and are finished in ......
Formica [emoji23]
Wtf are these ?? https://uploads.tapatalk-cdn.com/20180611/467f0e811ab06fbe4c566b6e175cb46c.heichttps://uploads.tapatalk-cdn.com/20180611/b17b6b9365c09b1f213fd256cf55df34.heichttps://uploads.tapatalk-cdn.com/20180611/b26fda654653136cacfdf8dd302adfcd.heic

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struth

11-06-2018, 17:41

imf's ?

andyrlb

11-06-2018, 17:48

imf's ?

I did wonder [emoji848]

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andyrlb

11-06-2018, 17:49

I did wonder [emoji848]

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The sound ! Wow [emoji50]

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struth

11-06-2018, 17:52

remind me of ones they made with a resistive line tunnel . forgot the name... they will likely go low and be very decent

struth

11-06-2018, 17:55

irving m fried

Lawrence001

11-06-2018, 17:59

They're probably diy, there were a lot of designs using similar drive units published at the time in magazines like Hifi Answers. The B139s were common with the celestion and coles tweeters, they usually came with a B110 mid range, but these ones are different. The one on the right looks like a bit like a Goodmans but I've never seen it with the suspension in white. The one on the left looks vaguely familiar but I can't quite place it. Although it's possibly another Goodmans that's had the surrounds replaced with rubber. The B139 with the white surround is a very early example, the other one is the more common early variety. It's probable one of these has been replaced in the past.

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walpurgis

11-06-2018, 18:02

They're probably diy, there were a lot of designs using similar drive units published at the time in magazines like Hifi Answers. The B139s were common with the celestion and coles tweeters, they usually came with a B110 mid range, but these ones are different. The one on the right looks like a Goodmans but I've never seen it with the suspension in white. The one on the left looks vaguely familiar but I can't quite place it. Although it's possibly another Goodmans that's had the surrounds replaced with rubber. The B139 with the white surround is a very early example, the other one is the more common early variety. It's probable one of these has been replaced in the past.

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Both mids are EMI. One has faded. Some IMF models used similar.

andyrlb

11-06-2018, 18:07

Both mids are EMI. One has faded. Some IMF models used similar.

Getting excited now boys [emoji16]
Keep it up

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walpurgis

11-06-2018, 18:15

I suspect the B139 with the convex white foam surround is original, as it's an early version. The other with what appears to be a concave black rubber surround is later and was probably a replacement. The white surrounds were known to harden and perish.

andyrlb

11-06-2018, 18:17

Off subject lads but can you please tell me what the name of this antenna/aerial connection is called?https://uploads.tapatalk-cdn.com/20180611/666a1039a44f17ce6ce071630128f489.heic

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struth

11-06-2018, 18:20

looks like a bnc

walpurgis

11-06-2018, 18:23

looks like a bnc

Thought they made Morris Minors? :scratch: ;)

andyrlb

11-06-2018, 18:24

Thought they made Morris Minors? :scratch: ;)

He’s right [emoji1303]
Cheers Grant

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andyrlb

11-06-2018, 18:28

Can anyone make sense of these ? Which is positive and negative?https://uploads.tapatalk-cdn.com/20180611/3d29a6c3044aff4411fce628d089e764.heic

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Macca

11-06-2018, 18:35

I reckon the speakers are IMF TLS50 with some replacement drivers. Like Lawrence says, DIY/kit build. I've got some that need recapping to be fully good to go but they are still pretty impressive. The bass power on them is just stupid as I suppose you've already found out.

andyrlb

11-06-2018, 18:36

I reckon the speakers are IMF TLS50 with some replacement drivers. Like Lawrence says, DIY/kit build. I've got some that need recapping to be fully good to go but they are still pretty impressive. The bass power on them is just stupid as I suppose you've already found out.

Yes Martin I have discovered just that [emoji16]
Putting the pmc’s to shame

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walpurgis

11-06-2018, 18:37

Many amps have a common neg, so use a meter on the speaker terminals and on a metal screw on the steel casing to identify negatives.

You could also look inside, as you have DIN speaker sockets there. The small pin hole on those is the positive and the inside wiring probable goes to the bigger terminal posts too, identifying positives.

andyrlb

11-06-2018, 18:40

Many amps have a common neg, so use a meter on the speaker terminals and on a metal screw on the steel casing to identify negatives.

You could also look inside, as you have DIN speaker sockets there. The small pin hole on those is the positive and the inside wiring probable goes to the bigger terminal posts too, identifying positives.

Cheers Geoff

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walpurgis

11-06-2018, 18:40

I'm wondering if the speakers were made by Lockwood. They are generally associated with Tannoy, but that's not to say exclusively and those formica laminates look very Lockwood like.

andyrlb

11-06-2018, 18:41

I'm wondering if the speakers were made by Lockwood. They are associated with Tannoy, but that's not to say exclusively and those formica laminates look very Lockwood like.

I haven’t found any IMF’s like them

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andyrlb

11-06-2018, 19:01

Well I think I agree with Lawrence in that they are some kind of kit speakers

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walpurgis

11-06-2018, 19:03

Does this look familiar? :)

http://www.usaudiomart.com/details/649361862-radford-auditorium-monitors-very-rare-mint/images/1570524/

Looks like you now own two pairs of Radford speakers.

andyrlb

11-06-2018, 19:06

Does this look familiar? :)

http://www.usaudiomart.com/details/649361862-radford-auditorium-monitors-very-rare-mint/images/1570524/

Looks like you now own two pairs of Radford speakers.

Ambulance please

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andyrlb

11-06-2018, 19:07

More Radfords too ! What a coincidence

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andyrlb

11-06-2018, 19:09

The dimensions are identical

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andyrlb

11-06-2018, 19:48

Same crossover https://uploads.tapatalk-cdn.com/20180611/49f899ed749c9eab566b1a3ab1fd53e2.heic

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Lawrence001

11-06-2018, 20:56

That's where I've seen the mids from, Maxims!

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andyrlb

11-06-2018, 20:59

That's where I've seen the mids from, Maxims!

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Ok you knowledgeable lot , could someone point me in the right direction for the correct capacitors for these Radfords ? Please https://uploads.tapatalk-cdn.com/20180611/157adf32b302b8a1c54cdeb26871fb64.heic

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andyrlb

11-06-2018, 21:00

Ok you knowledgeable lot , could someone point me in the right direction for the correct capacitors for these Radfords ? Please https://uploads.tapatalk-cdn.com/20180611/157adf32b302b8a1c54cdeb26871fb64.heic

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I know where to get them , what I mean is what do I replace them with?

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Lawrence001

11-06-2018, 23:00

I imagine Alcaps of the same values from Falcon Acoustics will work fine.

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walpurgis

11-06-2018, 23:03

I agree about Alcaps. They may be cheaper from Cricklewood Electronics on ebay though.

struth

12-06-2018, 02:32

Does this look familiar? :)

http://www.usaudiomart.com/details/649361862-radford-auditorium-monitors-very-rare-mint/images/1570524/

Looks like you now own two pairs of Radford speakers.

good find.