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Old 26th March 2012, 05:54 PM   #1051
phusis is offline phusis  Denmark
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Quote:
Originally Posted by jzagaja View Post
D500 rings slightly near 20kHz while D800 between 10-20kHz. Trying to get NSD1095N. New 18sound beryllium driver is now listed on website.
That's some nasty break-ups from the D800. The DE500 curve looks very respectable, actually, and the near 20kHz break-up here mayn't be cause for much concern.

The 18sound beryllium driver sports a 4" VC, doesn't it? Well, if JBL can squeeze their 4" beryllium driver in the Everests to reach some 15+kHz, supposedly in an acceptable manner, why shouldn't 18sound be able to do so with their driver? Perhaps I'm holding on naively to the hope of seeing a 4" compression driver going unassisted towards the 15-20kHz region...

Last edited by phusis; 26th March 2012 at 06:02 PM.
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Old 27th March 2012, 05:19 PM   #1052
Tytte71 is offline Tytte71  Norway
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If not ruler flat to 20k it is at least an interesting large format driver option Radian Audio 951PB/Truextent Be4016
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Old 27th March 2012, 05:40 PM   #1053
jzagaja is offline jzagaja  Poland
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K+T Data 5.2011.
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File Type: jpg Radian 951PB_Truextent Be4016_BLS Horn_K+T 5.2011 Klein.jpg (843.7 KB, 740 views)
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Old 29th March 2012, 09:55 PM   #1054
jzagaja is offline jzagaja  Poland
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E-JMLC-1400 and JMLC-1400 with B&C DE7.
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File Type: png EJMLC-1400-DE7.png (47.7 KB, 666 views)
File Type: png JMLC-1400-DE7.png (51.7 KB, 635 views)
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Old 31st March 2012, 10:31 AM   #1055
sumacSK is offline sumacSK  Slovakia
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Quote:
Originally Posted by jzagaja View Post
E-JMLC-1400.
now this one looks good, what are the dimensions? (picture?) is it intended for use with 6" ?
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Old 31st March 2012, 10:46 AM   #1056
jzagaja is offline jzagaja  Poland
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220x86x93mm (WxHxD).
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File Type: jpg ejmlc1400.jpg (21.6 KB, 606 views)
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Old 31st March 2012, 09:41 PM   #1057
jzagaja is offline jzagaja  Poland
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BK turntable from 60s for polar measurements, very well built. Going to install small stepping motor inside. Bought Slo-Syn SS25-1001 (11.8V, 0.44A, 5 wire unipolar) and Atmega 8 USB controller (AVT 2933), first run:

IMG_0049.MOV - YouTube

80-20m Magnetic Loop Antenna by Frank N4SPP
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File Type: jpg IMG_4318 (1).jpg (349.4 KB, 574 views)
File Type: jpg IMG_4319.jpg (368.5 KB, 91 views)
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Old 1st April 2012, 07:46 AM   #1058
_Wim_ is offline _Wim_  Belgium
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Hello,

I am also working on an automated rotary table (nearly finished). It uses a pic microcontroller that communicates over USB. The USB framework came from this excellent site:

Open Source Framework for USB Generic HID devices based on the PIC18F and Windows - WFFwiki

Status so far:
- C# test application in finished. It can servo control a motor with encoder (I used a pittman motor from Ebay)
- Rotary table is mechanically finished
- Now working on Auto-it script to control the rotary table and Arta automatically

Goal: take polar response data with 1 mouseclick

When finished I will post code here on DIYAudio.
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Old 5th April 2012, 02:10 PM   #1059
JoeS is offline JoeS  Germany
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Default Horn Tractrix, JMLC or E-JMLC for BMS 4590 / 4592

Hello,
I saw that Autotech will exhibit on the always excellent "High End" 2012 fair in Munich in first week of May. Good chance to see tangible products in real world again!

@jzagaia, will you be present too?

I like to select a good combination of Autotech Horns for use with BMS 4592. LF will come from room corner horns with 18". X-over approx 400Hz.
I had in mind Tractrix 200, E-JMLC 300, IWATA 300, JMLC 350 (JMLC 200t is too big).
Roomsize 4,5 x 7 m

Who can give some directions here?
Many thanks
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Old 5th April 2012, 06:34 PM   #1060
jzagaja is offline jzagaja  Poland
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This year Autotech @ Munich can play music I won't be there, it's time for a brake from audio With a wide bandwidth 2" drivers JMLC-350 or EJMLC-300 are suitable.
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