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Multi-Way Conventional loudspeakers with crossovers

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Old 28th July 2008, 10:48 PM   #1
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Default once again studio monitor

OK
I know we are doing this topic every now and then.
But then again we seem to go over just about everything several times, so why not!

Heres what I need.
A largeish bookshelf (not tower) speaker at around 100 liter or less of volume. My listening criteria are:
Somewhat fullrange, but the lowest of low can be subtle. I just dont want any separete subwoofers.
"Flat" response on axis from say 55 hz and up to 18khz.
Uncolored and detailed sound. Sounds easy right?
Other things to bake into the equation.
Proven design. Im done experimenting for righ now.
Theese speakers needs to sum up quickly since this speaker will be at less then 10 foot distance from me.
They will be placed on axis, facing me in a tringle shape. I will be sitting in a 12 by 16 foot room with 9 foot ceilings, speakers against the short wall about 1.5 foot from the wall.
They must be able to withstand loud volume and peaks since they will reproduce uncompressed not mastered material.
I have a good large hafler amplifier.

Theese can be 2way,3way,wwt,wmtw, or whatever acoustic-hocus-pocus-horn we can think of.
I have a maximum cost of 1000 USD for drivers and crossover parts.

Links and Ideas are so very welcome.
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H.Honda Chico CA Land of the fooled
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Old 28th July 2008, 11:36 PM   #2
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www.zaphaudio.com
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Old 29th July 2008, 09:13 AM   #3
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From one of the best in the business.... Vance Dickason. F3 around 54Hz.

http://www.partsexpress.com/resource...e/ldc6kit.html
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Old 30th July 2008, 02:03 AM   #4
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well thanks everyone.
But Im not looking to do a tower....or a centerchannel...or a nearfield.
Im sure zaph have the greatest floorstanders and small bookshelf
but Im looking to build something more like this:
http://www.jblpro.com/pages/recording/4400.htm#4412A
or like this
http://www2.jblpro.com/catalog/Gener...x?PId=26&MId=5
Im looking for something rather large and with drivers that can play loud all day long.
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Old 1st August 2008, 03:12 PM   #5
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So I guess odd looking 3 ways are no no here.

Is there no specific large studio monitor diy design out there?
one again Large,Loud and Neutral.
So far Dr Geddes design seems close to what I want but I have general doubts about the neutral part of "large,loud and neutral" when it comes to pro drivers covering large frequency ranges.
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Old 1st August 2008, 03:31 PM   #6
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Please do not disparage pro drivers.

They can be more neutral sounding than many other drivers.
Equally they can add unwanted colouration.
As can any drive unit, no matter for what use it was intended.

I assure you, the B&C units that Dr. Geddes uses are certainly monitor quality.
I could not say that some JBLs are neutral sounding.

Please do not make such sweeping generalizations.
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Old 1st August 2008, 03:33 PM   #7
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I noticed the links you gave.

The JBL units are pro drivers, if you didn't realise, there was a time when people didn't sweep each type of driver into it's own market segment.
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Old 2nd August 2008, 12:41 AM   #8
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I guess one of my "sweeping generalizations" is that many pro drivers (or PA drivers because there are many kinds of pro) have a fairly rugged output due to the fact that they are many times optimized for a fairly narrow band in the frequecy range.
Im sorry to make such a generalization.
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Old 2nd August 2008, 04:33 PM   #9
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Quote:
Originally posted by holger honda
I guess one of my "sweeping generalizations" is that many pro drivers (or PA drivers because there are many kinds of pro) have a fairly rugged output due to the fact that they are many times optimized for a fairly narrow band in the frequecy range.
Im sorry to make such a generalization.
That is true of certain drivers that were intended from the outset to be used in small band situations, like horns.

However, the majority of PA companies use reflex subs and partially horn loaded tops. And the large amount of smaller setups use full reflex rigs, which have only two or three drivers covering 40-20K. There are many drivers optimized to cover the frequency range that Doctor Geddes sets his B&C to doing, as that range is very common for 1 15" woofer to be placed in between.

Compression drivers are another thing altogether, you can't really find compression drivers made exclusively for hifi use unless you count the Japanese ones which are in the multiple 1000 dollar range.

My advice is to pop over to lansingheritage forum, they have a lot of info on building such studio monitors and the drivers that you can use in them, using the JBLs which as you probably do know are quite 'rugged'. They call it the West Coast Sound.
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Old 2nd August 2008, 06:34 PM   #10
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here's a three way design using seas drivers http://www.troelsgravesen.dk/3WClassic.htm
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