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Old 12th January 2007, 06:21 AM   #71
Ang is offline Ang  United States
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fcserei - do you mean you surface mounted lines of neo8's facing (@75degrees) each other near the throat? Has this done anything to the neo8 peak around 10K? Thanks.

PS How's the vertical response strike you? sorry for all the questions, just a cool idea you have.
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Old 12th January 2007, 09:01 PM   #72
Ang is offline Ang  United States
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i.e. - it sounds like you are (surface mounting?) the drives at positions a b c d. Is this correct?

Or are you putting them in the throat?
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Old 14th January 2007, 02:53 AM   #73
Ang is offline Ang  United States
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If you look at one of the new VMPS designs (and I'm not saying that's anything to go by) they're essentially doing the reverse. The ribbon is emminating through a slot with a throat opening to the rear.

Justification for this is?

http://www.audiocircle.com/circles/i...?topic=34680.0
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Old 7th April 2007, 08:27 PM   #74
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Default Comparison between line source and point source Speakres

Hi Tomahack,

I have been impressed from your line source speakers as well as from our point source speakers both using Neo8 transducers plus Neo3 in the point source, from your post of 05-15-2003.
As some times has passing by and I didnīt see any other feedback from you on these two different speakers, I would like to know if you are now able to describe the differences of these two systems and your probable preference.
The reason behind my interest is that Iīm planing to build new speakers but did not decide yet if it should be a line- or point source. My todayīs system is a point source dipole system using FOSTEX RP21 and RP41 Magnetostats together with a Mundorf 2340 AMT which is a very nice sounding combination. Unfortunately due to the degradation of the neodym magnets of the FOSTEX transducers the system starts now to produce some distorsions at higher sound levels which forces me to look for new transducers as FOSTEX canīt magnetize the transducers any more.
Could you please be so kind and describe your findings which probably would be of interest for other members to.
Many thanks.

Hell and sky
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Old 8th April 2007, 05:07 PM   #75
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Oh boy! It's been a long time since then... I made many iterations of the line array with various tweeters and midwoofers. This is my last version. I now use nine widebands with no Xover ( MaxFidelity PR65Neo) and one Fountek Pro5i with a 3,3uF cap. The lines are curved open baffles 102dB/watt . Subs are MaxFidelity 21" in sealed boxes. So far best setup by a large margin. The main difference between a line and a point source is the radiation pattern. With a line, the sound is more holographic. You are part of the music. Presentation is very forward. Soundstage is immense with abyssal depth. If you like to be seated in the front row of a concert, this is it. If you prefered a more laid back approach, a point source might be a better choice.

Never tried the Mundorf ribbon. Look like a nice tweeter. Raal's are very impressive.

http://www.raalribbon.com/
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Old 9th April 2007, 12:23 PM   #76
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Yes, itīs been a longe time since... and the technologies are changing as well as our tasts for music and our sence for listening too.
Since 2003 I have made only few iterations of my basic design, because I have been happy with this system.
With all your iterations and new designs, do you have still time to listen to music?
Now I have another question:
What has been the reason to switch from ribbon transducers (i.e. magnetostats) to widebands?
I still tend to use magnetostats in OB - my favored are still the FOSTEX unfortunately nor more manufactured - or AMTīs for their dynamic reproduction and very low distorsions. Low distorsions in my opinion are the fundamentals for relaxed listening to classical music, especially big orchestra or to big-band Jazz.
Since the AMT-patents are expired a lot of new constructions are emerging, unfortunately also a lot of Bulls..
The Mundorf AMTīs, from which I have tested the 2340 type as tweeter from 4,5kHz on used as real dipole, gave me full satisfaction. Just now I have recieved two 2830 for test, which I will try for the mids from 1.5kHz to 4.5kHz in d`Appolito configuration. Below them I intent to use 18sound 6ND430, four below and four on top of the mids and tweeter in line array.
Unfortunately the Mundorfīs are very expensive (~650 US$) per piece, thus Iīm still considering to try as alternate the BG Neo8 for the mids and Neo3 as tweeter. Can you still recommand them?

Following the Mundorf link for your info:
www.mundorf.com
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Old 28th January 2008, 08:32 PM   #77
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hello
I would have wanted to contact you directly but this damned beast say me I'm a newbe and must send some post before
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Old 28th January 2008, 11:36 PM   #78
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Quote:
Originally posted by tomahack
Oh boy! It's been a long time since then... I made many iterations of the line array with various tweeters and midwoofers. This is my last version. I now use nine widebands with no Xover ( MaxFidelity PR65Neo) and one Fountek Pro5i with a 3,3uF cap. The lines are curved open baffles 102dB/watt . Subs are MaxFidelity 21" in sealed boxes. So far best setup by a large margin. The main difference between a line and a point source is the radiation pattern. With a line, the sound is more holographic. You are part of the music. Presentation is very forward. Soundstage is immense with abyssal depth. If you like to be seated in the front row of a concert, this is it. If you prefered a more laid back approach, a point source might be a better choice.

How are the PR65's on their own? I thought they were midrange drivers with a high fs?

This system is cool! Do you call this a 'point source' due to the central tweeter? It looks like a dipole line mid, point source treble and monopole bass -? Are you doing anything electrical with the mid line or just using it full range?
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Old 7th June 2013, 12:24 PM   #79
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Hello ashok, wich vendor did you actually use for those neo 8īS?
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