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Progrezz
Registered User Joined: 06 September 2009 Location: Belgium Status: Offline Points: 17 |
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Rather this one:
http://www.usspeaker.com/eighteensound-18LW1400-1.htm
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Crashpc
Registered User Joined: 26 February 2008 Location: Czech Republic Status: Offline Points: 463 |
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Do you really think, that speaker with 4" Voicecoil "Has more watts" than another with 5" voicecoil?
Whatewer can be written on there, it won't be true.... |
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Nikon and Canon people should not be married to each other. Why did you let this happen?
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MusicXtra
Registered User Joined: 05 August 2009 Location: Netherlands Status: Offline Points: 249 |
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The diameter of the voice coil doesn't say how much power it can have. Most 18" speakers in this categorie are 700-1500 Watt, the X-max is for most subs a bigger ' problem' than how much electrical power it can have and most of this speakers have an X-max from 8-10mm. |
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Crashpc
Registered User Joined: 26 February 2008 Location: Czech Republic Status: Offline Points: 463 |
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Sorry - but PD drivers are the most quality you can have in standart sales. It has really beast sizes of everything, not only VC, and people use it as I said with no damage.
You are right about cone excursion, but it is handle-able by good processor. Tell me about Xmax? Many manufacturers only say, that Speaker reaching the Xmax produces some percentage of distortion, but nothing about how it will sound, or if the surround or spider will be damaged. Todays speakers can handle up to 30mm peak-peak of excursion, and you will not hear any bad sound from it, even if its Xmax is about 10mm 0-p. The Xlim of these speaker is more than 50mm p-p, and for example B&C Speakers are not gonna crash the backplate even if you push 3000W to it, but waporize the voicecoil. And diameter of the voicecoil matters :-) No. Yes! No! Stop it! But he started! No matter who started, I finish it! :-) |
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Nikon and Canon people should not be married to each other. Why did you let this happen?
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norty303
Old Croc Joined: 18 August 2004 Location: Eastbourne Status: Offline Points: 8806 |
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Back to the original design (not the EAW one) it looks like a manifold BP6 cab, in fact very similar to the Beyma B25/9 from their old plans on the website. Difficult to model because the front chamber is a whole port all by itself. Certainly very different characteristics to 'just a BR' cab with a bent baffle.
Edited by norty303 - 20 October 2009 at 12:40am |
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My laser stuff: Frikkin Lasers
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mobiele eenheid
Old Croc Joined: 15 August 2004 Location: Netherlands Status: Offline Points: 1568 |
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The quality of PD isn't for discussion, that's for sure ;)
However the 18LW1400 has a 4" VC, 5" VC for the PD, both have a voice coil winding height of 25 mm, the 18LW1400 has a gap depth of 15 mm, whereas the gap depth of the PD 186 is 9 mm.
15*4 = 60, 9*5 = 45--> 4:3 In the favor of the 18Sound.
The area of the gap depth is able to soak the heat radiation of the VC away, a larger area means more heat is able to escape into the cooling system/basket/magnet.
Both the 18LW1400 and the PD 186 where originally rated at 700 Wrms, the PD is probably a bit more conservative rated. I suppose they're quite up to one another.
Best regards Johan
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Crashpc
Registered User Joined: 26 February 2008 Location: Czech Republic Status: Offline Points: 463 |
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This doesn't make people stop using it at power I told....
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Nikon and Canon people should not be married to each other. Why did you let this happen?
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MusicXtra
Registered User Joined: 05 August 2009 Location: Netherlands Status: Offline Points: 249 |
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And they are finished
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MusicXtra
Registered User Joined: 05 August 2009 Location: Netherlands Status: Offline Points: 249 |
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And here's the back side with two NL8 and one NL4 speakon.
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audioalliance
Registered User Joined: 10 July 2007 Location: Trinidad and Tobago Status: Offline Points: 144 |
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jeeez they look madddddd
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http://www.myspace.com/audioalliance
music is our mission |
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Ibex
Young Croc Joined: 27 May 2009 Status: Offline Points: 1013 |
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Referring to the Meyer Sound 700-HP Datasheet: 700-HP Specifications: Maximum Peak SPL: 139 dB peak Dynamic Range: >110 dB ....that's not equal to the sensitivity! Output Power: 2250 W (1125 W/channel) Amplifier gain: 4500W = 36.5dB peak Sensitivity: 139dB - 36.5dB = 102.5dB cheers Edited by Ibex - 15 November 2009 at 8:45pm |
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Teunos
Old Croc Joined: 23 November 2008 Location: The Netherlands Status: Offline Points: 1799 |
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And the HP700 is a double 18, so probably 4 ohms, and sensitivity will also be lower I reckon.
Edited by Teunos - 15 November 2009 at 3:26pm |
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Best regards,
Teun. |
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