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  #1676  
Old 04-24-2013, 07:46 PM
jnkarrik jnkarrik is offline
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I have only heard 2395 lenses in a few select clubs, so I would have a hard time objectively comparing the two. I have a pair or two of them in storage, but only recently acquired the 2441 drivers so I have never even listened to them with these drivers. I plan to strip them down and refurbish them some day, but unfortunately they will not fit in my current shelves without sticking WAAAY out.

I can say that the 15" woofer and 537 horn throw the sound across the room MUCH better than the tiny bookshelf monitors I had before. I do not have spooky, holographic imaging by any means, but considering their placement and the fact that the horn is aimed inward a few degrees toward the listener, I was not really expecting that.
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  #1677  
Old 04-24-2013, 08:00 PM
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Cool... are you using JBL diagrams? what material?

I have a pair of 2440 motors I run with aftermarket Be diagrams on
350 hz edgarhorns... they image very well, but the sweet spot is very small...

I use some DAS lens horns (2343 clone horn w/ serpentine lenses like the hartsfield)
when I need more dispersion....
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  #1678  
Old 04-24-2013, 11:36 PM
jnkarrik jnkarrik is offline
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They are original JBL (aluminum?) 'phragms. How do you like the aftermarket Berillium diaphragms compared to the JBL's?
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  #1679  
Old 04-25-2013, 11:10 AM
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I had Ti jbl diaphragms previously...
unknown age, church duty

the difference is very dramatic...
more so with the tractrix flares...

I feel the tractrix are more revealing/image better than the exponentials with lenses...

PS. if you happen to look at them again, Ti phragms are a little duller in appearance than the AL units
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Last edited by DSA.audio : 04-25-2013 at 11:18 AM.
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  #1680  
Old 04-25-2013, 06:36 PM
charles0322 charles0322 is offline
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When it comes to 2395,s I like the industrial look

The dispersion pattern with the lens is needed for places with high ceilings (churches, nightclubs)

I like the way GSA stacked two together and used 2x BMS4590 to cover frequencies over 800hz and left the tweeter arrays to scatter the hiss.

I grew up with these jbl systems in all the clubs I spent my youth in Im not sure if Im partial because of what they represent or in their soundstage for the mid-hi. Im a little too attached to them to remember how accurately they compete with the current horn at Stereo, (Which is a NEXO box, incorporating the 2 inch TAD compression driver and a 10" driver within the cabinet) The original old mid-hi boxes that SBS had built during his years overseeing Stereo for the TAD TM-1201H were destroyed by the new owners, another shortsighted club owner

Before the club had the 2395 with the TAD4002 or 01 with adapter, cant remember, Shorty did that upgrade and I know he is not a fan of this horn but was stuck sometimes at Stereo using what they had.

Today the 6 2395,s sit in the basement of the club gathering dust, legend has it they were once installed at the paradise garage, but who knows?

Either way love it or hate it the lens diffraction horn is unique in its looks and I love the wood variant on the smaller jbl studio monitors of the day.



http://youtu.be/jUXDXO0EoZk

Quote:
Originally Posted by DSA.audio
I had Ti jbl diaphragms previously...
unknown age, church duty

the difference is very dramatic...
more so with the tractrix flares...

I feel the tractrix are more revealing/image better than the exponentials with lenses...

PS. if you happen to look at them again, Ti phragms are a little duller in appearance than the AL units
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Last edited by charles0322 : 06-19-2013 at 12:03 PM.
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  #1681  
Old 07-14-2013, 06:32 PM
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DSA.audio DSA.audio is offline
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that wood lens is an aftermarket customization...

I do agree it is stunning in appearance...
evidently the material change did not impact performance
from my reading on the project
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  #1682  
Old 07-14-2013, 06:48 PM
jnkarrik jnkarrik is offline
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I love those wood lenses too, but they are designed for the LE85/H91 horn. Too bad no one makes a wood version for the elliptical H5038 horn that the 2395 lenses use.
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  #1683  
Old 07-15-2013, 11:47 AM
charles0322 charles0322 is offline
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Quote:
Originally Posted by jnkarrik
I love those wood lenses too, but they are designed for the LE85/H91 horn. Too bad no one makes a wood version for the elliptical H5038 horn that the 2395 lenses use.

I had always thought about 2395 ina different mat'l..

it would prob have to be hdf with veneer.. perhaps a long thin piece of oak may warp but I think I will try this and ebonise the oak to black with some rusty nails in vinegar..

I wonder if resonant values would come into play with a larger type of lens like the 2395

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  #1684  
Old 08-06-2013, 04:11 PM
Zen5656 Zen5656 is offline
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First construction in CAD...


... then all build by myself alone.
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  #1685  
Old 08-06-2013, 04:28 PM
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NICE!

it's the angle of the mixer mounting baffle fixed, or adjustable?
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  #1686  
Old 08-06-2013, 07:06 PM
Zen5656 Zen5656 is offline
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It is fixed but I did a lot of experiments with height before with cardboard boxes and simulated a few angles in the CAD app. So it fits perfect to my body/elbow height. The miter joint (where top and mixer board collide) was probably the most challenging part in the making.

Nothing beats German engineering.
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  #1687  
Old 08-06-2013, 08:08 PM
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I completely agree, woodworking details can be extremely unforgiving....

I tried making some boxes with half blind dovetails once before....
think on the brighter side, at least you did not decide on secret dovetails!
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  #1688  
Old 08-27-2013, 06:01 PM
pbellsound pbellsound is offline
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I had the opportunity to again tour the Rane facility.
This is the products wall-pretty much everything ever made:
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  #1689  
Old 08-27-2013, 06:03 PM
pbellsound pbellsound is offline
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In the OEM products section are RLA three way and five way isolators:
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  #1690  
Old 08-27-2013, 06:04 PM
pbellsound pbellsound is offline
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  #1691  
Old 08-27-2013, 06:06 PM
pbellsound pbellsound is offline
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While I was in the neighborhood, I had a peek (or listen?) at the Anechoic Chamber at Microsoft. http://gizmodo.com/5372268/microsoft...nd-goes-to-die
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  #1692  
Old 08-27-2013, 08:34 PM
Elliot Thompson Elliot Thompson is offline
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Hey Paul I love your shirt!

What kind of material is used to create the Anechoic Chamber?

Best Regards,
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  #1693  
Old 08-27-2013, 09:02 PM
pbellsound pbellsound is offline
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It's solid fiberglass blocks cut into shape covered by a fiberglass cloth covered by a stainless wire mesh that's grounded to reduce RFI.

The "floor" is a tensioned wire grid with the same acoustical blocks below it. It's kinda bouncy.

The teeny-tiny mic on the stand is about 35 grand-it has ultra low noise floor electronics.

At most, the space is 12 feet wide.
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  #1694  
Old 08-27-2013, 09:05 PM
pbellsound pbellsound is offline
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The Microsoft campus is simply amazing. The food courts & shops are great!
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  #1695  
Old 08-27-2013, 10:30 PM
jnkarrik jnkarrik is offline
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Awesome Paul, thanks for posting. I like the t-shirt too.

Did the anechoic chamber make your ears hurt? I've never been in one, but have heard the silence is "deafening".
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  #1696  
Old 08-27-2013, 10:45 PM
pbellsound pbellsound is offline
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While it is quiet, I was chatting with my guide and didn't have any time to stand there in silence. I did notice the touch of tinnitus I have. I'm sure with enough time in there I'd start hearing things.
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  #1697  
Old 08-29-2013, 05:46 AM
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Jaysoul Jaysoul is offline
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Here is a new mix from me that I would like to share with you: http://soundcloud.com/jaysoul/man-cave-music

Recorded as the title suggests in my man cave below!

Hope you enjoy!





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  #1698  
Old 08-31-2013, 10:15 AM
Estacy Estacy is offline
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I think my booth is complete for now
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  #1699  
Old 11-13-2013, 11:33 AM
charles0322 charles0322 is offline
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image hosting 20mb

My booth at the Halloween party.
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  #1700  
Old 11-22-2013, 03:03 PM
jnkarrik jnkarrik is offline
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I picked up a GSA isolator recently, and swapped it in where my Comelentric 4-way iso/crossover was above the mixer. I had some giant blue knobs laying around so I put them on for fun.


IMG_2160 by jnkarrik, on Flickr

Last edited by jnkarrik : 11-25-2013 at 09:52 PM.
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