18Sound ND1480BE Beryllium 1.40" Compression Driver Test & Review

[@pulDag]

Nice, love the subjective and objective part of things. GJ

[@Nonamehere1]

Joseph, in an old video of yours, in a certain section you give an opinion on which for you would be the B&C 1" driver with better sound. I've reviewed several videos in search of this information and couldn't find it again. Do you remember which one driver model would be?

[@yo3429]

The lack of crossover @8 kHz is a strong point. Saves additional amping and / or crossover. I guess only if you can manage to get it close to perfection, a 3 way system could have a slight edge over the 18Sound 3". But I doubt that this come close to the 18Sound overall performance. What's the phase / step response of 3 way vs. 18 Sound @8 Khz? I'm sure, 15kHz top end is plenty for all of us. Much weightier is a smooth 8 kHz region IMHO, where voices can get pretty harsh. Nice driver, expensive, not the one for experiments but well worth when combined with a optimised horn/waveguide. What do you guess is the lowest possible acoustic crossover point for the 18 Sound with Bessel type filter and bigger horn?

[@youtube改名也太難了吧]

Are you still using the DCX464?

[@JosephCrowesDIYSpeakerBuilding]

I’ve used it on previous projects but not for my personal system. It’s a good driver. BMS is just as good.

[@MW-ii5nb]

whats the lowest crossover do you think?

[@rickg8015]

Great review.. I like that you supplemented it with the Sachs tube preamp (is it the Lynn Olson design?) Anyway, I hope you could review the B&C DE550.. If it needs Contour Filters either with your Biradial or Circular horns..

[@JosephCrowesDIYSpeakerBuilding]

I’m not sure what involvement Lynn had with mine. Although Don sent me Lynn’s new personal preamp to put on the Testbench and see how it compares to mine. Lynn’s is a true balanced design.

[@artysanmobile]

I remember JBL’s brief use of beryllium for their most expensive pro driver. They did not sell the diaphragm for user install as beryllium is a highly toxic material.

[@andersannerstedt5168]

& Good luck finding one !

[@TDA-AUDIO]

Thks.

[@johanneswolff9554]

please review the BMS 553ND

[@MyTgangsta]

Hey you ever tested the coral m100 or dukane version many perfer it over a tad 2001 or radian 958 beryllium would love to know your opinion

[@interesting7906]

As ultimate, the TAD-4003 is now out of production and unobtanium.