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Old 25th January 2008, 08:21 PM   #11
mert is offline mert  Turkey
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Default macka's system

Macka,

What speakers are you using with your pass gear?
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Old 25th January 2008, 10:47 PM   #12
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Hi Mert,

They are large 4 way JBL studio monitors model 4345.
Overall 10 cubic feet in volume. 300lb each.

Some specifications

32 - 320 hertz ~18 inch woofers 4 inch voice voice 1 inch excursion, 320- 1200 hertz ~10 inch midcone 3 inch voice coil ,1200 -9000 hertz ~ exponential horn with 1 inch compression driver using aquaplas coated titanium diaphragm, 9,000-21,000 hertz ~slot radiater.

Frequency range 32 hertz - 21 khertz @95 dba.

I built up these clones in 2004 with the assistance of the original design engineer Greg Timbers at JBL and some other member on the Lansing Heritage forums.

Its a fairly old design by todays standards but they are impressive when properly setup.

They seem to work well with the Passlabs amplification
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File Type: jpg 250.5amp.jpg (31.9 KB, 494 views)
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Old 25th January 2008, 11:07 PM   #13
mert is offline mert  Turkey
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Default jbl

Macka

Isn't it difficult to drive 18 inch with x250.5? or you have an another pair of speakers?
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Old 26th January 2008, 03:32 AM   #14
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Mert,

I see the picture... but why is the dog on the amp? And is that
a yo-yo he has hanging in front? Seems like there's a story there.

Looks like your son is famous now too...

Cheers, W.
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Old 26th January 2008, 05:03 AM   #15
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I have some Dynaudio on loan but I prefer the JBL, freedom from power compression. The disadvantage is they really need to be biamped to avoid response issues around 100 hertz using a full passive crossover.

The plan is to build this design in 2008 and literally play with all my Pass amps. Its an nice easy 8 ohm load and can produce a nearly perfect square wave in terms of phase response.

http://customanalogue.com/elsinore/elsinore_index.htm
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Old 26th January 2008, 07:35 AM   #16
mert is offline mert  Turkey
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Wayne

Actually, it is a hedgehog, it is not a dog. The hedgehog is hanging with me since 2003. Check the pictures , you will get the story....(it is not a yo-yo, its a blue eye, for protecting the all gear for bad luck, murphy law, ....)
[IMG]Click the image to open in full size.[/IMG]

[IMG]Click the image to open in full size.[/IMG]

As you can see, hedgehog is resident...
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Old 26th January 2008, 07:37 AM   #17
mert is offline mert  Turkey
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macka,

Have you ever tried new JBL K series speakers?
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Old 26th January 2008, 07:20 PM   #18
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No,

Can't get em down here to listen to.

They are nice ......apparently .

macka
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