"BEST" Woofer 50Hz - 300Hz & Hi eff, maybe 15" ?? - Page 4 - diyAudio
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Old 11th January 2010, 06:50 PM   #31
Defo is offline Defo  Norway
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Jbl 2226h
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Old 11th January 2010, 07:00 PM   #32
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Agreed. JBL pro stuff is absolutely top of the line.
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Old 11th January 2010, 07:04 PM   #33
ScottG is offline ScottG  United States
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Quote:
Originally Posted by bear View Post

..thinking to myself that of the lot the Focals might be the best sounding.


Tonal quality and fidelity are the criteria that I'm concerned with - natural sound - Mingus ought to sound like his bass is in the room... and not sound like someone else's instrument... and of course maximum sensitivity.
That sounds about right.. BUT it does depend on the amplification. The Polyglass woofers with the stronger motors didn't do anything particularly wrong, and did almost everything well. The amplification and the loading tended emphasize one particular quality better, but at the expense of other qualities. Overall *supple* is the word that comes to mind, the newer glass sandwich versions are more detailed (for a given motor), but don't have quite the same quality.

Again though, I'd encourage you to go back and read that post I linked to (..and as expensive as the Supravox field coil is, it's generally less expensive than most, if not all, other field coils of similar size). (..of course only once the AA board is working.)
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Last edited by ScottG; 11th January 2010 at 07:10 PM.
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Old 11th January 2010, 07:28 PM   #34
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you may want to consider reading the stuff over at the lansing heritage board...there have been a few threads on best 15" woofer
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Old 12th January 2010, 01:27 AM   #35
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Quote:
Originally Posted by bear View Post
A few things here...

a horn is not an option in this system.

the higher the sensitivity the better in terms of matching.
a single driver in 15" is the limit in terms of space. 2 x 12" is feasible...

I've got experience with the Altecs, the JBLs and the Focal 15 series... thinking to myself that of the lot the Focals might be the best sounding.

Again, I do not want or need to go below ~50-60Hz. I've got killer subs for that area.

Tonal quality and fidelity are the criteria that I'm concerned with - natural sound - Mingus ought to sound like his bass is in the room... and not sound like someone else's instrument... and of course maximum sensitivity.

Upper bass to die for? Ideas are nice, actual experience is better.

_-_-bear

PS. the JBLs sound ok, but have a kinda dead and non dynamic presentation - and maybe don't reach their sensitivity specs? Maybe they are better than what I just said... but I'd maybe tend toward a K140 or earlier driver... dunno.
To ask for the best, say you can build any box and then say a horn is not an option is really backwards "bear" Good luck with your compromise
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Old 12th January 2010, 01:59 AM   #36
dcathro is offline dcathro  Australia
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If you like the JBL k140, you might like these:

A150WVL | Kilimanjaro-Series | Wolf von Langa

These are a field coil K145.

I bought a pair to use in my project for AU$3000 inc shipping. Everyone who has seen them has thought them very good value for money.

It is too early for me to give a definitive statement on them, but so far I am very pleased with them. They don't go low (below 40Hz), but are warm and very clear and fast. I also love the tuneability of the driver parameters.

Quote:
Originally Posted by bear View Post
A few things here...

a horn is not an option in this system.

the higher the sensitivity the better in terms of matching.
a single driver in 15" is the limit in terms of space. 2 x 12" is feasible...

I've got experience with the Altecs, the JBLs and the Focal 15 series... thinking to myself that of the lot the Focals might be the best sounding.

Again, I do not want or need to go below ~50-60Hz. I've got killer subs for that area.

Tonal quality and fidelity are the criteria that I'm concerned with - natural sound - Mingus ought to sound like his bass is in the room... and not sound like someone else's instrument... and of course maximum sensitivity.

Upper bass to die for? Ideas are nice, actual experience is better.

_-_-bear

PS. the JBLs sound ok, but have a kinda dead and non dynamic presentation - and maybe don't reach their sensitivity specs? Maybe they are better than what I just said... but I'd maybe tend toward a K140 or earlier driver... dunno.
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Old 12th January 2010, 11:40 AM   #37
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Quote:
Originally Posted by TrueSound View Post
To ask for the best, say you can build any box and then say a horn is not an option is really backwards "bear" Good luck with your compromise
No it is not a good option.

A horn will not readily "time align" in most instances, unless you want the thing sticking out into the listening space by a significant amount, and you can deal with the offset that will be required to prevent shadowing of the HF section. If I had an utterly huge room, I'd give it some consideration, I don't.

Also I have heard few "bass horns" that really sound that good overall, most simply don't get low enough - and few are actually flat in the passband because the mouth size is way too small...

And I also said that this system has a killer subwoofer section, so I am looking for a "filler driver"... ~60Hz - ~250Hz.

shall we go on?

Anyhow, the topic is fairly clear and simple... "direct radiator upper bass drivers - likely 15" & high sensitivity". Ok?

_-_-bear
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Last edited by bear; 12th January 2010 at 11:52 AM.
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Old 12th January 2010, 11:50 AM   #38
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Regarding the other suggestions - all appreciated.

The Lambda drivers are doubtless good, but don't quite "scream" being that their sensitivity is mid 90s, and they are designed with the phase plug to "go high" - which I don't need or want. A rolloff starting at 500-1000Hz would actually be desireable!

The older Altec drivers might suffice, but then we have to consider the TAD 1601 as a newer version, and of course the Focal 15 series is also a clone.

As I mentioned, the JBL drivers are of interest, but they tend to sound (to me) a little "dead" and perhaps undynamic. Perhaps this is because they are relatively clean (distortion wise) drivers, but still they come off as a little dead sounding and do not seem to really be high 90's SPL sensitivity despite their claims, more like 96dB SPL/1w.

Fancier drivers that cost beaucoup $$ are not going to get into the mix here. The treasury department will not finance that. Contributions are always appreciated. Although they are of some interest.

I'm giving some additional thought to the multiple driver solution (line array, even if not array'd in a line...).

There seem to be a few Eminence drivers that spec at a true 100dB whose specs don't look too awful... but I am suspicious of their cone formulations/designs - the HF rises look a lot like break up modes...

_-_-bear
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Old 12th January 2010, 02:42 PM   #39
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~100db single woofer... JBL D130?

I simmed it in a big@ss box and it's 100/101db 1w/2.83v in 2pi space with the kind of extension you want. I have only heard them in some screaming guitar amplifiers but will remain forever impressed by the combination.

regards,
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Old 12th January 2010, 03:43 PM   #40
el`Ol is offline el`Ol  Germany
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http://www.ciare.com/pdf/catalogo/CS250.PDF
Very old-school.
Low moving mass, low excursion, cloth surround, would give 93 dB in 60 l sealed, but only -5 dB at 60 Hz.
Probably there are similar drivers from Madisound.
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