045BE vs 045BE-1

[baldrick]

Anyone know the difference between 045BE and 045BE-1?

[baldrick]

Anyone?

I consider useing 045be instead of 045be-1 in my Everest clones (with original passive Everste crossover), will this work similar as 045be-1?

[Champster]

Can't help you but where are you hoping to buy them even if you knew the difference?

[pos]

from the S9900 thread:

[ivica]

from the S9900 thread:

Hi POS,

thanks for the reminded us about 045Be-1. It is interesting that such new driver can be used only up to about 17kHz,
wthout huge EQ and dedicated DSP and own power amp, if JBL high sensitivity speakers wanted to be realized.
May be old models such as JBL 2405 2402 2403 2404 are good candidates too, if their old fashion outlook can be neglected

regards
ivica

[pos]

Hi Ivica,

It is the other way around: it is used for 17kHz and up

[ivica]

Hi Ivica,

It is the other way around: it is used for 17kHz and up

Hi POS,

I think that (as seen from the figures You have sent us) say: from 17kHZ up to 25kHz it would be very difficult to us it without DSP (or other active) networks, not to mention that its sensitivity in that region is less then 95dB/W/1m , and that would make it almost useless for higher efficiency speakers that are say 95dB/W/1m efficiency. Interestingly that JBL use it in DD66k speakers that are about 93dB/W/1m.

Regards
Ivica

[4313B]

I can see caring about an 045 with a system like the original K2-S9800 but in an Everest system it is a non-issue, except for marketing purposes of course...

[baldrick]

The crossover in Everst is 20khz so in first it sounded redicilous also to me... but as someone stated in another thread it still means that 045be will give quite a lift from 10khz and up to 20khz (I Guess if means a 12db lift from 10 to 20khz). Since the MF have drop in the higher freq I would guess that this makes sense after all or am I way off?

I haven't gotten horns for the Everst yet so I don't know how the speakers will sound as 2-way, and don't know how a 2451BE will sound compared to 476Be. But I do know how 2447Be sound in Seos waveguides and I therefore think that adding a supertweeter might be a good solution.

[Dieter]

I don't want to miss the UHF in the DD66000. If you cover them, there is missing something!

[4313B]

I don't want to miss the UHF in the DD66000. If you cover them, there is missing something!

And that is exactly why they are there.

[audiomagnate]

I don't want to miss the UHF in the DD66000. If you cover them, there is missing something!

But exactly what is missing? With a crossover point above the upper hearing limit of just about anyone who can afford them, Everests have always baffled me. It's quite possible the 045 adds some subconsciously detectable air or depth when used like that, but I just think an 8 to 10k crossover point sounds better to my 15k limited ears. I just KNOW crossing over at that point electronically and using a separate amp would work perfectly. You can easily get the level right and they will have the openness and bite of the old 2405 equipped monitors that so many people love.

[Dieter]

But exactly what is missing?

The best way is hearing by yourself!

[4313B]

But exactly what is missing?

The system would be a real tough sell in the intended marketplace if it didn't go out to ~ 40 kHz on paper.

[audiomagnate]

The best way is hearing by yourself!

I have. I can't hear that tweeter!