Eminence ring radiator |
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bob4
Old Croc Joined: 29 February 2004 Location: Finland/Germany Status: Offline Points: 1842 |
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Thank you for your insights Marjan, they are highly welcome! Lets see if eminence has come up with something worthwhile and competitive |
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MarjanM
Old Croc Joined: 10 February 2005 Location: Macedonia Status: Offline Points: 7810 |
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I just cant figure it out why is it so much bigger then the 4540nd.
If the price is right it could have been a good option for line array usage.
Edited by MarjanM - 03 March 2017 at 1:47pm |
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Marjan Milosevic
MM-Acoustics www.mm-acoustics.com https://www.facebook.com/pages/MM-Acoustics/608901282527713 |
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MarjanM
Old Croc Joined: 10 February 2005 Location: Macedonia Status: Offline Points: 7810 |
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Marjan Milosevic
MM-Acoustics www.mm-acoustics.com https://www.facebook.com/pages/MM-Acoustics/608901282527713 |
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bob4
Old Croc Joined: 29 February 2004 Location: Finland/Germany Status: Offline Points: 1842 |
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Well, no distortion specs from eminence, but output should be similar. Bms takes almost 3dB more power, but the eminence has overall higher sensitivity. So unless we have measurements of both to directly compare distortion performance, its apples and watermelons really. I doubt that i could ever hear the above 15-16kHz supersizzle where the bms has an advantage though. Lets see when and at what price it pops up at thomann |
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thirtha
Registered User Joined: 12 November 2014 Status: Offline Points: 77 |
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Thanks for the inputs gentlemen. Appreciate it. If you see the specs on the PDF you will find that the details on the voice coil wire material and type are not mentioned. As per the distributor, Eminence has stated to him, that the wire material is made of Aluminum ribbon. Could it just be, that the sensitivity figures stated are because of this?
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bob4
Old Croc Joined: 29 February 2004 Location: Finland/Germany Status: Offline Points: 1842 |
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I'm no physicist/transducer designer, but aluminium ribbon has been used as voicecoil conductor material for decades, e.g. by JBL. If my memory doesn't fail me starting in the fifties. It's all in the data sheet:
Edited by bob4 - 03 March 2017 at 7:34pm |
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bob4
Old Croc Joined: 29 February 2004 Location: Finland/Germany Status: Offline Points: 1842 |
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If this unit comes at a price point just translated to euros, 75 - 100 €, It might be worth a comparison with the BMS offerings?
cheaper than buying JBL vintage bullets (although, it needs a wave guide obviously -> additional expense)
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MarjanM
Old Croc Joined: 10 February 2005 Location: Macedonia Status: Offline Points: 7810 |
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BMS 4538 is cheaper then that. 4540 is only slightly more expensive.
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Marjan Milosevic
MM-Acoustics www.mm-acoustics.com https://www.facebook.com/pages/MM-Acoustics/608901282527713 |
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madboffin
Old Croc Joined: 03 July 2009 Location: Milton Keynes Status: Offline Points: 1537 |
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JBL vintage bullets nearly always need new diaphragms, and even if they don't, they usually wear out after a few years due to metal fatigue. -> Even more additional expense! |
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bob4
Old Croc Joined: 29 February 2004 Location: Finland/Germany Status: Offline Points: 1842 |
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yep, 4538 has a nice price! should have researched prices before making that statement. But the 4540 seems to be in the 130 - 150 € bracket depending on supplier. I'm talking about the average joe's price, not Mr. Business who gets business pricing and ex VAT. i'm sure you get even nicer prices Marjan
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MarjanM
Old Croc Joined: 10 February 2005 Location: Macedonia Status: Offline Points: 7810 |
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When you buy in hundreds at a time, sure you have good prices.
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Marjan Milosevic
MM-Acoustics www.mm-acoustics.com https://www.facebook.com/pages/MM-Acoustics/608901282527713 |
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thirtha
Registered User Joined: 12 November 2014 Status: Offline Points: 77 |
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Good day Marjan,
I went through your website and checked out the M28 LA. You have mentioned that you have used a 1.75 inch annular diaphragm compression driver HF on it. Am I correct in assuming that a annular diaphragm compression driver is the same as a ring radiator? Two different names for the same product? Can you please enlighten me on the advantages of using a annular diaphragm compression driver over a conventional dome diaphragm compression driver? The design looks fantastic and a feast for the eyes, and I am sure it must be the same for the ears too. And I must say this, there is a quite a bit of an artiest in you. just love the way you have done the wooden grill on the box (face book profile pic) regards,
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