My first 18" ported box build |
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aperrado
Registered User Joined: 10 January 2008 Location: california Status: Offline Points: 315 |
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Posted: 30 April 2009 at 3:12am |
I going to put some pics of my first build I going to build two more if ppl think it will be better, please put any advice here before to make a two more boxes.
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Im hard to learn but still asking
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RiddimKid
Young Croc Joined: 22 October 2006 Location: United Kingdom Status: Offline Points: 847 |
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Very Nice, what are they B&C design???
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aperrado
Registered User Joined: 10 January 2008 Location: california Status: Offline Points: 315 |
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yes it is a B&C 18 tested with a eminence oem 18 this speaker coming with a 218 cabinet showing on the back of the sound the sound is good but when get max volume the speaker pop a little |
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Im hard to learn but still asking
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MarjanM
Old Croc Joined: 10 February 2005 Location: Macedonia Status: Offline Points: 7810 |
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Ughh... that is not good. That means that you have to tune the boxes a bit higher. The voice coil is hitting the back plate on the magnet structure and avoid that at all cause. Dont drive them too loud you are reaching the damaging amount of excursion of the speaker.
Are you using any HP filter? |
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Marjan Milosevic
MM-Acoustics www.mm-acoustics.com https://www.facebook.com/pages/MM-Acoustics/608901282527713 |
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aperrado
Registered User Joined: 10 January 2008 Location: california Status: Offline Points: 315 |
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if hp filter is a crossover I set it to 100hz I tested with eminence speakers but really the box are made for peavey lowriders I going to buy and test that speakers
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Im hard to learn but still asking
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MarjanM
Old Croc Joined: 10 February 2005 Location: Macedonia Status: Offline Points: 7810 |
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HP filter is a device that cuts the very low frequencies. It should be set at around 38-40Hz for your boxes.
What crossover are you using? |
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Marjan Milosevic
MM-Acoustics www.mm-acoustics.com https://www.facebook.com/pages/MM-Acoustics/608901282527713 |
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odc04r
Old Croc Joined: 12 July 2006 Location: Sarfampton Status: Offline Points: 5483 |
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Haha, that speakon socket isn't going to come loose anytime soon.
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aperrado
Registered User Joined: 10 January 2008 Location: california Status: Offline Points: 315 |
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my crossover is a peavey PV35XO
I will get it down to 40 hz and see how it perform.
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Im hard to learn but still asking
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MarjanM
Old Croc Joined: 10 February 2005 Location: Macedonia Status: Offline Points: 7810 |
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With your crossover you can only set a Low Pass Filter. It does not have a High Pass filter.
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Marjan Milosevic
MM-Acoustics www.mm-acoustics.com https://www.facebook.com/pages/MM-Acoustics/608901282527713 |
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levyte357
The 10,000 Points Club Joined: 10 May 2004 Location: UK, London Status: Offline Points: 11743 |
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http://www.speakerplans.com/forum/the-rhino-mini-scoop_topic22878_page1.html |
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"Who am I? I'm the guy who does his job.. You must be the other guy".
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aperrado
Registered User Joined: 10 January 2008 Location: california Status: Offline Points: 315 |
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ok marjanm I use the crossover only for subs I have 4 jbl on tops and drive it with two amps I use one amp for each pair of speakers. |
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Im hard to learn but still asking
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MarjanM
Old Croc Joined: 10 February 2005 Location: Macedonia Status: Offline Points: 7810 |
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I understand what are you saying, but it is obvious that your boxes are tuned lower than the resonant frequency of the driver and the box is unloading the driver too early. That is why you must use higher high pass filter (which you dont have).
Get your self some DSP unit. Behringer dcx2496 will be just fine and it is not expensive. Edited by MarjanM - 03 May 2009 at 12:00pm |
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Marjan Milosevic
MM-Acoustics www.mm-acoustics.com https://www.facebook.com/pages/MM-Acoustics/608901282527713 |
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