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Multi-Way Conventional loudspeakers with crossovers

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Old 28th September 2012, 04:51 PM   #171
badman is offline badman  United States
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Quote:
Originally Posted by Cal Weldon View Post
My ears prefer a good transient response over the bottom octave. Mind you I don't watch movies so that might be part of it.
Of course- you CAN use "true subs" for the super deep stuff and focus on the punch for the midbass (down to, say, 50) and grab the best of both worlds.
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Old 28th September 2012, 04:54 PM   #172
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That's actually what I do but I guess what I was saying that if I had to choose, I would lose the sub in a New York minute.
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Old 28th September 2012, 05:02 PM   #173
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Quote:
Originally Posted by Cal Weldon View Post
My ears prefer a good transient response over the bottom octave. Mind you I don't watch movies so that might be part of it.
Quote:
Originally Posted by badman View Post
Of course- you CAN use "true subs" for the super deep stuff and focus on the punch for the midbass (down to, say, 50) and grab the best of both worlds.
I dont really care about movies either Cal. If the story is rubbish and its badly stitched together with CGI and rumbling explosions its not worth watching.

Transient response, the speed of articulation of a sound, is what floats my boat. I'd happily loose the lower freq. if I get clarity, immediacy and detail.

So i think I'll chose a 10" for the mid. Where abouts to cross it over depends on the driver but 2k is my goal.
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Old 28th September 2012, 05:17 PM   #174
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I'd aim at 1.3-1.4k, a 10" will beam terribly at 2k.
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Old 28th September 2012, 05:21 PM   #175
IG81 is offline IG81  Canada
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A 10" with say 9" diameter radiating surface will start to beam over ~1500Hz. Well, it's not like a brickwall thing, it's gradual, but you might get away with 2kHz Xover if the HF unit above this has a controlled directivity that matches that of the 10" at this point.

Karlsons do well at trading off low-end for punch.

IG
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Old 28th September 2012, 05:27 PM   #176
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Quote:
Transient response, the speed of articulation of a sound, is what floats my boat. I'd happily loose the lower freq. if I get clarity, immediacy and detail.
You can do that with subs. Also things start to sound a bit thin without that last octave and a half. Just pick the right midwoofers and subs and it can sound really good with the solid foundation subs give you and all the snap you are looking for.

Rob
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Old 28th September 2012, 05:51 PM   #177
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Originally Posted by JRKO View Post
>snip<
What is it about corner horn/placement that makes it better? Again, high cost drivers are not going to appear in this project. I just don't have the funds available.
The room corner serves as the required extension of the horn body anticipated by the enclosure design. The assumption here at issue, is that the room is big enough to fulfill that requirement.

For all the examples provided, none contained inexpensive drivers. Apply the lumber cost savings, accruing from use of smaller enclosures, to upgrade the drivers you plan to use.
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What do you mean 'for all the cases presented here?' So big speakers are a fail no matter what?
When at the expense of room size and acoustical treatment, the answer to the second question is yes.

All the YouTube recordings I listened to exhibited the acoustics of too-small, acoustically untreated rooms. The point is: spend some of the large loudspeaker budget on room treatment and make the loudspeakers smaller. The size of a loudspeaker enclosure has to do primarily with its low frequency limit and the amount of energy required to reproduce it. For higher frequencies, enclosure size is not at issue, but room acoustics, never the less, remains to be addressed.

Regards,

WHG

Last edited by whgeiger; 28th September 2012 at 06:18 PM. Reason: typo
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Old 28th September 2012, 06:15 PM   #178
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Quote:
Originally Posted by IG81 View Post
A 10" with say 9" diameter radiating surface will start to beam over ~1500Hz. Well, it's not like a brickwall thing, it's gradual, but you might get away with 2kHz Xover if the HF unit above this has a controlled directivity that matches that of the 10" at this point.

Karlsons do well at trading off low-end for punch.

IG
I saw you family of Karlsons - quite an achievement!

yeah 2khz is an outside figure. hopefully making for an easier crossover with the HF.

JBL us a longish, circular narrow 'horn' and then a slot loaded uhf driver. As using 4 drivers in in the upper registers will necessitate another amp and 2 more drivers, I think 3-way will do for now

would a nice CD driver and 90x40 horn meet up best with the mids? or is there a dome out there?
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Old 28th September 2012, 06:18 PM   #179
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I think there are three ways to love the Lambda TD18H+ as a BASS woofer:
Thanks for the thoughtful reply, but I worded my previous statement poorly.

What I meant to say was that I have a pair of AE TD18H+ woofers and I'd like to see somebody else build something big with them.
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Old 28th September 2012, 06:50 PM   #180
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with good well behaved speakers you wont need special room treatment
unless you have a really 'nervous' room
but might be true that many speakers using pro drivers could tend to be a bit 'nervous', and thus may need room treatment to sound good
unless you settle at calling it honest, analytic, clean, pure, true, or whatever suits
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