Adam Whetham wrote on Thu, 19 October 2006 15:40 |
Is that screen on the driverack saying "Audio Trash"??? |
Lee Brenkman wrote on Thu, 19 October 2006 16:12 |
It's pretty cool when you can get your own "autograph model" system integrator. |
Bennett Prescott wrote on Wed, 18 October 2006 17:01 |
...a 1.4" exit 75x55 degree rotatable horn. |
John Horvath wrote on Thu, 19 October 2006 19:48 |
And does the box actually sound good down to 70hz? Or is it more along the lines of a normal 10"/12" box that seems to roll off into nothing after 90hz? |
John Horvath wrote on Thu, 19 October 2006 19:48 |
Bennett, did you rotate the horn? The horn is actually a B&C ME90, and is stated to be a 80x60, but 75x55 is probably more realistic. Anyway, I had a discussion a few years back with someone from B&C about the orientation of this horn. I was told that the 80 degree horizontal plane is actually the curved sides of the bell. With that said, your U103 is actually working in 60H by 80V mode. Did you do any basic polar testing, or notice they were performing slightly narrow? |
John Horvath wrote on Fri, 20 October 2006 00:48 |
The horn is actually a B&C ME90, and is stated to be a 80x60, but 75x55 is probably more realistic. Anyway, I had a discussion a few years back with someone from B&C about the orientation of this horn. I was told that the 80 degree horizontal plane is actually the curved sides of the bell. With that said, your U103 is actually working in 60H by 80V mode. Did you do any basic polar testing, or notice they were performing slightly narrow? |
Bennett Prescott wrote |
....Alex tells me that at some shows in Slovenia he's used 3 in an arc in front of the performer, which had the added advantage of giving her more horizontal coverage, and had more than enough power.... |
Bennett Prescott wrote on Wed, 18 October 2006 18:01 |
Alex says this is partly due to using the highest quality drivers he can get his hands on, but also due to the time he spends manipulating the phase relationship of the two drivers. I've measured all the boxes and they're about as good as it gets in terms of both frequency and phase flatness... |
John Horvath wrote on Fri, 20 October 2006 15:13 |
What causes the HF to follow the sides of bell are the flat areas immediately adjacent to the throat hole, usually left & right of the hole and adjacent to the curved walls, just like your picture. However, you can see in Bennett's U103 horn that the larger flat areas are positioned in the vertical along with the curved sides. This is a 90 degree shift from normal horn geometry basics, and against B&Cs own recommendation. |
Too Tall (Curtis H. List) wrote on Fri, 20 October 2006 16:09 |
Any chance you could share some of these measurements? |
Too Tall (Curtis H. List) wrote on Fri, 20 October 2006 21:09 |
... so forgive me if I don’t think he has it so bad making it work in an active xover..... |
John Horvath wrote on Fri, 20 October 2006 20:13 |
.... you can clearly see that the horn in Bennett's U103 is different than the picture you provided..... |
Too Tall (Curtis H. List) wrote on Fri, 20 October 2006 21:46 |
Hi Alex, I see from what Bennett writes that the single 18” sub woofer is ported. There looks to be a slot f or a possible vent on the M 1225 coax monitor and a couple of holes under the woofer on the U103. Are both of these ported then? Since you are using an active xover did you consider going sealed? |
Ales Dravinec (Alex) wrote on Sat, 21 October 2006 03:02 | ||
Right on Curtis. I think I mentioned in one of my other posts, that the only way to achieve all desired specs is by using active circuitry....Ingemar Johanson did us all a great favor with LSPcad Alex |
Too Tall (Curtis H. List) wrote on Sat, 21 October 2006 16:23 |
I see you stuck to analog. |
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.... I need to find the same package in IIR..... |
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BTW I was surprised on how low you went with the B&C compression driver. The horn must support it quite low to make it stretch that far. Even with that I thought you would hit Xmax and shatter the diaphragm. 2nd order acoustic makes matters worse...... |
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I’m getting away with it because the BMS drivers are a totally different design. I did not think conventional compression drivers would take it. At the least it should distort something fierce. |
Gareth James wrote on Mon, 23 October 2006 13:51 |
Which B&C driver is being used on that U103? |
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Had a look at the ADR website, the 618hh sub sounds interesting with its different driver loading methods for a more cardioid response. My only question is how much does it cost, since its using 6 1000w 18" drivers... |
Ales Dravinec (Alex) wrote on Mon, 23 October 2006 14:18 |
MSRP for ATA618HH is 7980 EUR. Alex |
Chris Cowley wrote on Thu, 02 November 2006 12:28 |
I'd certainly be intrigued to demo some in the UK. |
Chris about ATA 618 C HH msrp |
Sound loud |
Chris Cowley wrote on Thu, 02 November 2006 22:28 |
I'd certainly be intrigued to demo some in the UK. |
Dylan Shepherd wrote on Sun, 12 November 2006 10:31 | ||
Make that Australia as well, if possible Alex ?? Dylan Shepherd |
Ales Dravinec (Alex) wrote on Thu, 16 November 2006 23:12 | ||||
We are currently putting a lot of effort into organizing demos worldwide. Age of courier services makes our job easier. The only way you can evaluate our speakers ( or any other speaker for that matter ) is to actually listen the speakers . Dylan, we are working on getting you demos Alex |
Michael 'Bink' Knowles wrote on Sat, 02 December 2006 16:14 |
Sweet! Two electro-optical limiters... it's like have two LA2As in there! -Bink |
LA-2A description |
....A unique electro-optical attenuator system allows instantaneous gain reduction with no increase in harmonic distortion – an accomplishment at the time, still appreciated today..... |
Quote: |
The only way you can evaluate our speakers ( or any other speaker for that matter ) is to actually listen the speakers . Dylan, we are working on getting you demos |
Too Tall (Curtis H. List) wrote on Fri, 20 October 2006 16:09 |
Any chance you could share some of these measurements? A save as of the delay finder after it makes an Impulse Response would be nice. One up in the air on stands and one down on the ground as a stage monitor would be work. |
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...Did you take those responses in the ground plane, or in free space... |
Ales Dravinec 'Alex' wrote on Thu, 05 April 2007 01:25 | ||
Phillip! I hope you don't mind me confirming that. Ground plane, HF horn closer to ground. A |
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Did you angle the boxes down to get the on-axis response?Thanks |
Ales Dravinec 'Alex' wrote on Thu, 05 April 2007 00:25 | ||
Phillip! I hope you don't mind me confirming that. Ground plane, HF horn closer to ground. |
Ales Dravinec 'Alex' wrote on Fri, 20 October 2006 02:32 |
I hope my "English" is readable.... |
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Caleb, I don't have anything heading out your way at the moment, I need to get a rig down into the TN/Florida area first, and then I'd like to run one around the midwest. I'd very much like to get you something, as soon as I can spare some equipment I will. |
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Scott, I've got a rig going down to TN, and then to FL. When it's done there, maybe early June, I'll have it shipped to you. Bug me. |
Ales Dravinec 'Alex' wrote on Thu, 05 April 2007 15:22 |
I stand corrected. Alex |
Tom Manchester wrote on Sun, 29 April 2007 23:53 |
Now where can I get some free samples |
Michael 'Bink' Knowles wrote on Tue, 15 May 2007 13:48 |
...What's the black panel below the thingie below your dbx?... |
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Put the Bennie where the Furman was. |
Josh Evans wrote on Tue, 22 May 2007 02:39 |
That small coax monitor looks interesting there are not many coax monitors that are powered availible in the market that I know of. |
Josh Evans wrote on Tue, 22 May 2007 02:39 |
Couple of quick things. These look like some really good products. However I do not see anything mentioned on a PIN1 test. Is Pin one connected to the chasi? Also Im assuming a universal power supply. Will they work over seas? That small coax monitor looks interesting there are not many coax monitors that are powered availible in the market that I know of. The only thing I see missing is a place to stick a leg from a tripod stand like the rat wedge which is really rad. The SMAART print screens look good, however coherence isnt shown so and im not sure really how this measurement was taken. You could also use a time window measurement. |
Bennett Prescott wrote on Sun, 17 June 2007 13:44 |
Hey Tom, I'll talk to Ales about that. Sounds like a good plan. BTW, the sub is actually 99lbs. |