Hi folks , This is wonderful and I'm sure you will get lots of fun out of this old clip .
I run it on my page too and people love it..This link will play it on YouTube.
It's called Hi Fo Fum and it's about vintage Amps , Record players , The madness of the 50s and 60s Electronic world.
Rated G of course !
You will get a good laugh at of this one ...All the best Pete .

https://youtu.be/fcwpOXfuHUw

"Mesmerised by a feedback circuit." Who hasn't been?

Best send up of audiophools I've ever seen. 👍👍👍

Anyone know what those floorstanding speakers are 6:54 in film? I think they're either Telefunken or Tannoy?
BBC studios shots - black cubical Ortofon MC pick-up cartridges 5:43 in film (highly collectable today.) ABC in Oz also used Ortofon moving coil. NHK in Japan used Denon D-103 moving coil. Commercial stations in Brisbane, like 4KQ, used the Euphonics 'Miniconic straingage' because their high output required no RIAA pre-amp (connect straight into mixer, no fiddling, no hum.)

Anyone know what those floorstanding speakers are at 6:54 in film?

Unmistakably Tannoys. Back in the early 1970s my flat mate at the time had a pair of them that he inherited from a deceased relative. We drove them with a Playmaster amp. Quite a quality dichotomy!

http://www.retrotechaudio.co.uk/tannoy-corner-york.html

I had assembled a pair of Magnavox 8-30 boxes, and they sounded better than those Tannoys, although we did blow up the 3TC tweeters pretty quickly and replaced them with Philips 1" dome tweeters:

http://rod-stuff.com/Magnavox.html

(I have a pair of 8-30 enclosures in my workshop. A few years ago, that same mate that I referred to above spotted them on the side of a road during a hard rubbish collection and grabbed them for the sake of auld lang syne. They are in almost perfect condition.)

Unmistakably Tannoys

Great, that confirms it. The confusion arose when I once asked an "expert" what these strange speakers with beveled ends featuring horizontal slats (pictured incidentally in a collector magazine) were. He said "Telefunken I think". But Telefunken never had a statement speaker like Tannoy did back then?

I once found a pair of Tannoys (separately) in the '90s (not easy to find today.) They were both in same cabinet which it seems is a copy of the specs of British cabinet but of plainer cosmetic finish. Seems their Nth American distributor, in Canada (Tannoy wanted to stick with the Commonwealth Anyhow, they seemed to have not wanted to export the British cabinet and maybe only issued plans, or made approved enclosures in Toronto? I think it was the latter because all three units I discovered had same cabinet. Here is photo below of one I bought, note same corner design, I wonder if Brit cabinet had same Helmholtz port inside? The drivers were early "Black" iteration, of primitive post-war construction, black dust bag, and industrial grade crossover capacitors!

Photo uploaded to Post 5.

"Magnavox 8-30 boxes"

I just discovered Magnavox tried their hand at Acoustic Suspension in the '60s after recently finding a (model 1S8716) speaker that uses the same black speaker-sealing putty as my AR3a's!

This Maggie has 10" air-suspension woofer and 10" metal horn (also air sealed with putty.) Their large 60s consoles used 12" wide horns which they touted as "1000 cycle horns" - are they referring to the crossover frequency or the cut-off frequency? - either way, it's too high, in middle of voice range. The only people who ever got horn speakers right was Western Electric where they crossed over at 300Hz.

Altec did OK with horns. I once heard a couple of sets of their bins easily reach the threshold of pain (and with bass you could FEEL) in a large conference hall when driven by an ordinary 10 + 10 watt amplifier.

I once ran Altec's 1" driver down to 285Hz crossover point with 4th-order active crossover, sounded amazing as their early diaphragm copies that of Western-Electric 555W which could run down to 100Hz.

I just measured the larger Magnavox horn: its exponential flare terminates at a 9.5" x 3" rectangle giving 28.5 sq in. To determine 'cut-off' freq, convert to equiv round horn radius = 3", then find circumference = 19", then divide into speed of sound (13500) = 711Hz. So I guess it could kind of run at 1000cps like Magnavox claim in their advertising. In reality they ran its woofer full range (kind of insurance to save the midrange sound ) and transitioned to the horn with a 2nd order filter at around 1.4kHz according to my bench testing.

The first Tannoys, the "Black" version, also crossed over at 1000cps, its concentric HF horn being ingeniously extended by the curvelinear bass cone (patent?) Later versions kept upping the crossover freq & beefing up the woofers - making audiophile collectors correspondingly less interested

In England, the word "tannoy" is a metonymy for "loudspeaker".
Example: "We just heard over the tannoy the test-match has been postponed."