OK THESE ARE FABULOUS. HAD 3 HOURS LISTENING SO FAR. WHAT AN INCREDIBLE SPEAKER. SUPER TWEETER HAS SURPASSED EXPECTATIONS. STAY TUNED FOR PART 5 WITH SOUND CLIPS
ALTEC model 8, 4, & 6 from around 1981 used a piezoelectric tweeter drive element in their manta ray horn with the orange “tangerine” phase plug. The only other high-quality piezo units are from Motorola up to the 90s in their POWERLINE horns. These were 4” square plastic horns and were an improvement over the 2x6” rectangle horns. I have used these horn tweeters down to 2000 Hz and instead of a crossover I simply use a 0.9 MH coil in series. because these units are seen by the amplifier as a ceramic disc capacitor I experimented with many crossovers until I found that they sounded best with an inductor I know it’s crazy
Doing a tech series is a great idea Matt. Can you address your thoughts on driver phase, bass roll off from different designs (bass reflex, infinite baffle and isobaric for example). I’ve mentioned before my liking of the resistive port set up on these, those of a certain age may remember the very original Mission 770 (small port model) where the polypropylene bass driver would flap back and forward massively. This changed completely on the updated version with the larger port, I guess due to the bass tuning!
@@mfr58 The piezo super tweeters come in around 12kHz. Very impressed by them considering how cheap they are. Very crisp and airy. Have only has a brief listen but will do a detailed evaluation in part 5
@@axedog1395 not sure yet. Only had a very brief listen. I'm hoping there good with most genres given there measurements. I'll do an evaluation in part 5 with sound clips
If they sound a good as they look you are onto a winner. Glad you’re busy - I’m sure it will be worth the wait for them, the issue is you only have so many hours in a day. Thanks for posting. 👍🏻
@@kjbunnyboiler They a generic 3 way boards. I guess CELEF just used these rather than making there own? Seen them in a few KEFs to. Yeah Falcon Acoustics bare boards
OK THESE ARE FABULOUS. HAD 3 HOURS LISTENING SO FAR. WHAT AN INCREDIBLE SPEAKER. SUPER TWEETER HAS SURPASSED EXPECTATIONS. STAY TUNED FOR PART 5 WITH SOUND CLIPS
ALTEC model 8, 4, & 6 from around 1981 used a piezoelectric tweeter drive element in their manta ray horn with the orange “tangerine” phase plug.
The only other high-quality piezo units are from Motorola up to the 90s in their POWERLINE horns. These were 4” square plastic horns and were an improvement over the 2x6” rectangle horns.
I have used these horn tweeters down to 2000 Hz and instead of a crossover I simply use a 0.9 MH coil in series. because these units are seen by the amplifier as a ceramic disc capacitor I experimented with many crossovers until I found that they sounded best with an inductor I know it’s crazy
Great work . Great to see a wood veneer front and no velcro 😅.
@user-thegoods71 Gotta have a style 😎🤣
Doing a tech series is a great idea Matt. Can you address your thoughts on driver phase, bass roll off from different designs (bass reflex, infinite baffle and isobaric for example).
I’ve mentioned before my liking of the resistive port set up on these, those of a certain age may remember the very original Mission 770 (small port model) where the polypropylene bass driver would flap back and forward massively. This changed completely on the updated version with the larger port, I guess due to the bass tuning!
@@kjbunnyboiler Yep all of that for sure 🤩
CELEF made superb speakers 🎶🎵
@@TheDjcarlos67 They did. A lot of thought and effort went into them.
I think the later iterations of the Mission 770s used straws in the ports. Very curious as to how those piezos sound.....
@@mfr58 The piezo super tweeters come in around 12kHz. Very impressed by them considering how cheap they are. Very crisp and airy. Have only has a brief listen but will do a detailed evaluation in part 5
Hi Matt, the speakers are looking fantastic. Love the looks and look forward to sound clips in part 5. I wish I had them 😂
@@VinylsFinal They weigh a tonne 🤣 Imagine the postage cost 😬
@haycrossaudio5474 Your speakers are worth tons more, my friend. Freakin' postage charges may break my bones, but good speakers shall never hurt me 😉
They look beautiful ❤️👍
Great job👍 I just bought some that need repairs too. What type of music best suits them?
@@axedog1395 not sure yet. Only had a very brief listen. I'm hoping there good with most genres given there measurements. I'll do an evaluation in part 5 with sound clips
If they sound a good as they look you are onto a winner. Glad you’re busy - I’m sure it will be worth the wait for them, the issue is you only have so many hours in a day. Thanks for posting. 👍🏻
Great work!👍
Sweet!
Afternoon Matt👍👍
At 8.05 the crossover is clearly marked as “Falcon Acoustics”. I wasn’t aware of Falcon supplying crossovers to Celef, I must check out my own !
@@kjbunnyboiler They a generic 3 way boards. I guess CELEF just used these rather than making there own? Seen them in a few KEFs to. Yeah Falcon Acoustics bare boards