15" Scoop like rectangular Tannoy G.R.F |
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Meat
Old Croc Joined: 05 June 2009 Location: Manc Status: Offline Points: 1514 |
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Nice woodwork Maarty.
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Don't test the champignon sound
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all bass
Old Croc Joined: 11 October 2012 Location: the Netherlands Status: Offline Points: 1855 |
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+1 on the woodwork Maarten! Why did you put the wool in that empty space in the cab? Or is it some kind of resonator chamber? |
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valve head777
Old Croc Joined: 27 July 2012 Location: East Sussex Status: Offline Points: 1780 |
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looking really nice!
whats with the damping in the horn path? I was under the impression that wadding should only go in the chamber.
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Freedom of choice, choice of freedom.
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Maarty
Registered User Joined: 24 May 2007 Status: Offline Points: 151 |
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If you look closer there is no wadding in the horn pass. And yes you need to place wadding in the front chamber....
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Maarty
Registered User Joined: 24 May 2007 Status: Offline Points: 151 |
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I placed wadding in the empty space to stop any resonance happening. |
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Zeno
Registered User Joined: 03 February 2015 Location: MUC Status: Offline Points: 28 |
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Thank you very much Maarty for the plans!
Love your perfect work. If I see this right your scoop gives a lot of compression to the driver. This is the same with the G.R.F in comparence with the Tannoy Autograph. The Autograph has no "throat" or "backchamber". The G.R.F gives more output an plays deeper and that while the G.R.F is much smaller than the Autograph. At least this are my personal memory many years ago. For this the Autograph delivers more direct punch. But the size is just to big. I will build some prototype with your impulse! I must confess that I guessed that you use a much bigger backchamber and it is more a reflex with a exponential channel. Zeno |
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Maarty
Registered User Joined: 24 May 2007 Status: Offline Points: 151 |
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You may find it interesting, or of help.., that the front chamber in my detail has the same volume as a grf rectangular box... |
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Hi Ho Silver
New Member Joined: 18 November 2015 Location: Germany Status: Offline Points: 1 |
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Hi Maarty, how often have I told my wife: These are the last speakers I will build...!!!
Well, now I am thinking about building your idea... I heard some Tannoys on youtube and this demanding in authority sound struck me... Are they still filling your room we music? |
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tv00
Old Croc Joined: 10 August 2009 Location: Denmark Status: Offline Points: 1886 |
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As you say this is not a sub, but a dedicated kick, so that's 2 way bass again. Furthermore frontloaded horns or folded horns (that are often bandpassghorns) are different from scoops that do have some cancelation when cone & horn gets out of phase. |
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mhgawel
New Member Joined: 30 June 2019 Location: Poland Status: Offline Points: 1 |
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Hello Maarty,
Can you publish GRF plans once again? Best regards, Maciek
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