I gave a set of these to my son 5 years ago. The front baffle is 1.25 " thick, very heavy. At my age I'm sure I couldn't tell you if the super tweeters are working or not. I can only test for continuity on the S.T. That being said I found them bright sounding as I did with a set of Tablettes, which is not my cupnof tea. The peizo (with a single cap xover) tweeters were common in cheap high power speakers of the past. The Mororola units were top drawer when working along with a good crossover . I look forward to watching this rebuild.
My dad had a pair of B&W speakers cant remember the model but, those tweeters look the same and those were Peerless soft dome tweeters. Love watching your vids Matt!
Another great video! Interesting to see yet another speaker getting new life. Those Kef B200 8" bass drivers seemed popular in the 70's. I have them in my Kef Reference 104ab and I like them. Magnet is bigger than I was expecting.
So much of this stuff from the late 70’s were rewriting the english manufacturing rule book as a departure from the high coloration wardrobes coming out of the main stream back then. The issue was that there were only a handful of driver manufacturers trusted and cost effective enough to allow the manufacturers to make money at those price points after dealer margin and shipment. The biggest issue was fear of charging the correct price for products so consequently many players went out of business relying on their overdrafts. It all got shook up when the Sansui mission celestion deal happened and the Sl6 appeared along with the sl700 finally bringing the importance of measurement and science to a world which used golden ears for too many years. It was a well known issue in the hi fi industry that the danish and Europeans were also capable of making speakers. Most recently China has affected the component market heavily. FFT, impulse response real-time RTA and accurate distortion analysis is getting us closer but we are still a long way off folks, a long way.
One of my favourites, I in fact have owned two pairs of PE1’s over the years. Lovely design and construction and the resistive port loading is one of my favourite port implementations. I first saw Celef / Proac speakers around 1980 when Stewart Tyler introduced his first Proac model, the EBS which incorporated early drivers from ATC (bass & midrange) later followed by the Studio series. That super tweeter in the PE1 was made by Motorola from memory!
@@haycrossaudio5474 I was going to say it looked like the warning buzzer on the Waso security device fitted to 1970's GPO vans ( i was in the P.O garage mechanicing then) , so motorola is probably right.
What a really nice looking pair of speakers! I've not heard of CLEF before, must have been one of the many UK manufactures that sprang up in the late 70's / early 80's. They deserve to be brought back to life. I think I remember those super tweeters from my youth in the late 70's, as I remember they were the cheapest Motorola piezo tweeters - available from Maplin and many others.
I love all the multicoloured straws dangling out of the back of the port, hahaha, my favourite part of this speaker by far! That gold cap is interesting I think it may be a paper type capacitor. I've never tried Bovril before but I've heard it mentioned quite a lot, I might have to give it a try based on your description. Very interested to see more on these speakers.
Hi Matt, very interesting speaker. Never heard of this brand. Wow to the woofer condition. Looking forward to seeing what you do with them :) Thank you!
Yes CELEF morfed into Pro Ac, I remember liking them rather a lot - if timing had been different I would have bought some. The straws were to reduce port noise and provide resistive damping if I remember correctly.
I had a pair of Pro9-TL speakers which came with the Audax tweeter. The D25 meant the dome was 25mm and the 12.9 meant the face-plate was 12cm x 9cm. They also made a less common version which was functionally identical but had a circular face-plate (can't remember the type ID).
This piqued my interest. I have a pair of Celef Min Pro SM. There is a dearth of reliable information about them. My ones had a Peerless tweeter and no name paper cone woofers. The foam was falling apart, so i replaced both drivers with the same ones as used in Musical Fidelity MC4, an Elac metal dome (the UK Elac and not the German company) and Audax TPX woofers. Not knowing anything about crossover networks, I just replaced the drivers. By heck they sounded great with my monster 300w monoblocks ( Rauch kit). I kept the old drivers and intend to repair the woofers. Infinite baffle, although I did try porting them, but ended up refitting the removed circles with a bit of car body filler for the gaps. I've got a hifi yearbook from some time in the 70s that mention them.
I'm in west Wales, cats and dogs too, plus we've got a storm with 80mph winds on the way tomorrow. Batten down the hatches. Interesting to see a Celef speaker, I remember them from back in the day, not the one with the piezo though. Top job on the Hadleighs by the way.
@@mfr58 Thanks mate. Stay safe with the bad weather. Pretty windy here at the moment. Yes unusual to see a piezoelectric tweeter. I'm doing a lot of testing with these though. I'm very interested in them. Early results are promising. I'm wondering why these aren't used more??
@@haycrossaudio5474 I seem to remember something about piezos having issues with consistency in performance. It will be interesting to see the measurements of the ones you bought and how similar they are. ...Cheers.
@mfr58 And I remember You correct. They were enormously inconsistent. I had a chat with a supplier, who told that some 10 to 15 pct, were usable spec's wise. This in a production of pa speakers. Was a dream scenario, for us youngsters, dreaming SPL...
@@misterdecibel SP1039 version. The 1014 used a smaller motor although I really like the 1014. No not a Falcon board. Looks a bit like something KEF would have made.
@@zievuur That is probably true given how they work but if you want to intergrate them with the other drivers correctly a network is required to control it correctly. Below 6kHz it measures all over the place 😅
I gave a set of these to my son 5 years ago. The front baffle is 1.25 " thick, very heavy. At my age I'm sure I couldn't tell you if the super tweeters are working or not. I can only test for continuity on the S.T. That being said I found them bright sounding as I did with a set of Tablettes, which is not my cupnof tea. The peizo (with a single cap xover) tweeters were common in cheap high power speakers of the past. The Mororola units were top drawer when working along with a good crossover . I look forward to watching this rebuild.
My dad had a pair of B&W speakers cant remember the model but, those tweeters look the same and those were Peerless soft dome tweeters. Love watching your vids Matt!
Goodness… never expected to see these again. I had a pair as a student (many years ago) powered by my NAD amp. They sounded amazing from memory!
Another great video! Interesting to see yet another speaker getting new life. Those Kef B200 8" bass drivers seemed popular in the 70's. I have them in my Kef Reference 104ab and I like them. Magnet is bigger than I was expecting.
So much of this stuff from the late 70’s were rewriting the english manufacturing rule book as a departure from the high coloration wardrobes coming out of the main stream back then. The issue was that there were only a handful of driver manufacturers trusted and cost effective enough to allow the manufacturers to make money at those price points after dealer margin and shipment. The biggest issue was fear of charging the correct price for products so consequently many players went out of business relying on their overdrafts. It all got shook up when the Sansui mission celestion deal happened and the Sl6 appeared along with the sl700 finally bringing the importance of measurement and science to a world which used golden ears for too many years. It was a well known issue in the hi fi industry that the danish and Europeans were also capable of making speakers. Most recently China has affected the component market heavily. FFT, impulse response real-time RTA and accurate distortion analysis is getting us closer but we are still a long way off folks, a long way.
One of my favourites, I in fact have owned two pairs of PE1’s over the years. Lovely design and construction and the resistive port loading is one of my favourite port implementations. I first saw Celef / Proac speakers around 1980 when Stewart Tyler introduced his first Proac model, the EBS which incorporated early drivers from ATC (bass & midrange) later followed by the Studio series. That super tweeter in the PE1 was made by Motorola from memory!
@@kjbunnyboiler Stewart Tyler. That was the name I couldn't remember. Thanks for the info on the PE tweeter. Motorola makes sense. Cheers
@@haycrossaudio5474 I was going to say it looked like the warning buzzer on the Waso security device fitted to 1970's GPO vans ( i was in the P.O garage mechanicing then) , so motorola is probably right.
What a really nice looking pair of speakers! I've not heard of CLEF before, must have been one of the many UK manufactures that sprang up in the late 70's / early 80's. They deserve to be brought back to life. I think I remember those super tweeters from my youth in the late 70's, as I remember they were the cheapest Motorola piezo tweeters - available from Maplin and many others.
@@caspar2155 you might be right with the super tweeters. It's an interesting concept I'm exploring.
CELEF evolved into Proac. Both Fantastic speaker companies
@@TheDjcarlos67 Correct. CELEF. Celestion and KEF. Because they were the make of drivers used in early designs. Yep, later became PRO-AC
I love all the multicoloured straws dangling out of the back of the port, hahaha, my favourite part of this speaker by far! That gold cap is interesting I think it may be a paper type capacitor. I've never tried Bovril before but I've heard it mentioned quite a lot, I might have to give it a try based on your description. Very interested to see more on these speakers.
Hi Matt, very interesting speaker. Never heard of this brand. Wow to the woofer condition. Looking forward to seeing what you do with them :) Thank you!
Yes CELEF morfed into Pro Ac, I remember liking them rather a lot - if timing had been different I would have bought some. The straws were to reduce port noise and provide resistive damping if I remember correctly.
@@amok281 Yeah the straws have a number of functions. Clever design by Mr Tyler 🙂
I had a pair of Pro9-TL speakers which came with the Audax tweeter. The D25 meant the dome was 25mm and the 12.9 meant the face-plate was 12cm x 9cm. They also made a less common version which was functionally identical but had a circular face-plate (can't remember the type ID).
@@TheRealWindlePoons That's correct 👌
This piqued my interest. I have a pair of Celef Min Pro SM. There is a dearth of reliable information about them. My ones had a Peerless tweeter and no name paper cone woofers. The foam was falling apart, so i replaced both drivers with the same ones as used in Musical Fidelity MC4, an Elac metal dome (the UK Elac and not the German company) and Audax TPX woofers.
Not knowing anything about crossover networks, I just replaced the drivers.
By heck they sounded great with my monster 300w monoblocks ( Rauch kit).
I kept the old drivers and intend to repair the woofers.
Infinite baffle, although I did try porting them, but ended up refitting the removed circles with a bit of car body filler for the gaps.
I've got a hifi yearbook from some time in the 70s that mention them.
I'm in west Wales, cats and dogs too, plus we've got a storm with 80mph winds on the way tomorrow. Batten down the hatches. Interesting to see a Celef speaker, I remember them from back in the day, not the one with the piezo though. Top job on the Hadleighs by the way.
@@mfr58 Thanks mate. Stay safe with the bad weather. Pretty windy here at the moment. Yes unusual to see a piezoelectric tweeter. I'm doing a lot of testing with these though. I'm very interested in them. Early results are promising. I'm wondering why these aren't used more??
@@haycrossaudio5474 I seem to remember something about piezos having issues with consistency in performance. It will be interesting to see the measurements of the ones you bought and how similar they are. ...Cheers.
@mfr58 And I remember You correct. They were enormously inconsistent. I had a chat with a supplier, who told that some 10 to 15 pct, were usable spec's wise. This in a production of pa speakers.
Was a dream scenario, for us youngsters, dreaming SPL...
What version of the B200 is that? The magnet looks big for SP1014. Also, is the crossover board a standard Falcon Acoustics part?
@@misterdecibel SP1039 version. The 1014 used a smaller motor although I really like the 1014. No not a Falcon board. Looks a bit like something KEF would have made.
In my memory there were also piezo tweeters that did not require a crossover filter. 🤔
@@zievuur That is probably true given how they work but if you want to intergrate them with the other drivers correctly a network is required to control it correctly. Below 6kHz it measures all over the place 😅
Those boxes look an awful lot like a DM4. Did they outsource all the parts?
@@BritProgJazz very different on all levels to a DM4. Bigger cabinet. Better cabinet control. Completely different drivers etc
@haycrossaudio5474 I'll have to see if I can find a pair, they look very interesting. Love your channel. Keep up the fantastic work! 🏆
Good to see a speaker with a wood colour baffle. Please don't use velcro on these 😂
@@user-thegoods71 velcro has its dampening benefits 🤣🤣🤣
OK you were right lol