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1 hour ago, iFi Audio said:

Yup, there's something oddly magnetic about those vintage Altecs. Paper down below, quality compression driver up top, crazy sensitivity... Yeah, it'll do :D 

Fugly, these are doing it for me in my small living room.

Altec 890C Bolero with a modern CD horn and B&C compression driver on top, replacing the weenie stock tweeter horn. Crossover based on the Econowave projects online, which was originally based on the Altec 19 crossover. 

The bass is handled by the stock 10” woofer and passive radiator pair. The 406 10” woofer is really unique, with the same voice coil and massive ALNICO motor as the 12” Altec 414. Paper cone with a “curvilinear” profile, gives around a 96dB sensitivity and is cleanly crossed over at 2kHz. With a raw woofer measured Fs of 27Hz, the woofer/radiator easily extends to below low E, 41Hz in room.

Sounds BIG like the Altec M19 with a similar old movie theater Technicolor sound, but with an extended and cleaner HF. Plenty of SPL for movies and music. 

But really fugly, definately not Porn-worthy. 

 

089EBA2E-95A7-4BA9-B708-7F1C77474150.jpeg

Edited by Laowei
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Ah - the good old battleship grey Cambridge Audio livery. It was panned by the reviewers, as were the buttons on the CD player (they described them as reminiscent of poking dead flesh). Very unfair, b

R5s arrived:  

Maybe not Speaker Porn these days, but back In the day these were pretty hawt.  Altec Model 19. Woofer: 15” 416  , Mid/high compression driver: 802 , Sectoral horn: 811 Very efficient: rated

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trying out the RAAL tweeters in the new rig.

DSCN6093.thumb.jpg.bfca2e39c5ab1c113c1282375d9f5d33.jpg

No big surprise but they are a bit to polite when crossed over at 2800hz, compared to the Horn tweeters. (and 10db less efficient than the mids)

It plays better higher up in frequency, but i guess it's better to go with a horn tweeter and separate supertweeter crossed over at 10K to retain the aggressive growl of the horns.

Fun experiment though :)

Edited by bjarnetv
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On 26.01.2018 at 9:55 PM, bjarnetv said:

trying out the RAAL tweeters in the new rig.

DSCN6093.thumb.jpg.bfca2e39c5ab1c113c1282375d9f5d33.jpg

No big surprise but they are a bit to polite when crossed over at 2800hz, compared to the Horn tweeters. (and 10db less efficient than the mids)

It plays better higher up in frequency, but i guess it's better to go with a horn tweeter and separate supertweeter crossed over at 10K to retain the aggressive growl of the horns.

Fun experiment though :)

RAAL ribbons are very good. Very subtle, smooth and easygoing, with great decay, not shouty at all.

 

On 25.01.2018 at 10:20 PM, Laowei said:

Fugly, these are doing it for me in my small living room.

Altec 890C Bolero with a modern CD horn and B&C compression driver on top, replacing the weenie stock tweeter horn. Crossover based on the Econowave projects online, which was originally based on the Altec 19 crossover. 

The bass is handled by the stock 10” woofer and passive radiator pair. The 406 10” woofer is really unique, with the same voice coil and massive ALNICO motor as the 12” Altec 414. Paper cone with a “curvilinear” profile, gives around a 96dB sensitivity and is cleanly crossed over at 2kHz. With a raw woofer measured Fs of 27Hz, the woofer/radiator easily extends to below low E, 41Hz in room.

Sounds BIG like the Altec M19 with a similar old movie theater Technicolor sound, but with an extended and cleaner HF. Plenty of SPL for movies and music. 

But really fugly, definately not Porn-worthy. 

 

089EBA2E-95A7-4BA9-B708-7F1C77474150.jpeg

Fugly or not, it has to sound impressively nonetheless.

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Thats pretty cool, and i like that he is trying to fix the typical bad ESL dispersion using electrical segmentation. i wonder how it ended up measuring off axis?

Not so sure if i like the V shaped bass bin behind the panel though - why mess with the figure 8 radiation pattern when you dont have to?

just place the bass next to the speaker and it will be in the dipole null, and not make any problems.

 

Having rebuilt my old esl63 a couple of times, i know from experience how much of a pain it is to tension the mylar juuuust right, only to have it tear last second, so props to this guy for seeing it through, and making everything from scratch.

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And alnico even biggerer and heavyerer!
 

Comparing the TAD and Radian is quite interesting though.

Both are 1" drivers with beryllium diaphragms, but the TAD is built like a tank and sounds way more 3D and lifelike compared to the Radian.

I guess its mostly down to tight tolerances and better phase plug design.

the radian is built like a mcdonalds toy, and just a slight variation in backplate tightening will affect the performance A LOT.

 

 

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Man, those Arthelute speakers are expensive!

at least they use TAD 2001's so they probably sound alright ;) 

wonder how they compare to the TAD 2402?

i listened to a pair once, and even though they sounded good, they sure could benefit from some good subs and supertweeters.

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For some reason that reminded me of Pink Floyd's 1969 stage equipment on the cover of Ummagumma Live. Pretty primitive given the monster rigs at modern concerts. And a little van to fit it all in. The amps and speakers were designed by Charlie Watkins (WEM), who toured with the band and mixed for them. Watkins also did the multi-kW sound systems for the Stones, Hendrix, the Isle of White festival - one of the titans of sound reinforcement. My son has a WEM Dominator bass guitar cabinet that I picked up for nothing, and sorted out when Watkins was still alive and sent me parts to refurbish it (he was a really nice guy you could just phone up). Died in 2014 at the age of 91.

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Audio Note AN-E Kit-03 speakers, Audio note meishu silver phono signature (Western electric 300b), Audio note 3.1x balanced DAC, Wyred for sound modded Sonos.

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This system is supremely inaccurate. Details? Eh. Imaging? Haha not really. But what it does do is give you the richest, fullest, living and breathing sound I have ever heard in a system. I actually put this system away for many months after getting some new toys (JBL M2 monitors), and after awhile my gf mentioned to me, "you know, we used to dance to the music more with the audio note system". That was all I needed to dust off the gear and put it back into commission. I know the term is overused but there really is nothing like this system in terms of engagement and emotional conveyance. Audio note gets alot of hate in some audio circles, but IMO they really do something special.

 

This man obviously does not have a cat.

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