Pkn xe6000 on void v18s & limiters |
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callumtruds
Registered User Joined: 10 November 2015 Location: ireland/england Status: Offline Points: 46 |
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Posted: 08 November 2018 at 4:45pm |
Pkn xe 6000
3650watts @ 4 ohm (marketing/burst figure) Real rms as tested at uk sound meet is 2600w @ 4 ohm That's on a 40hz tone for 5+ seconds link below https://www.abeltronics.co.uk/amptesting/amp-meet-three.php So my question is when running 2 void v18s loaded in 1850 horns per channel what kinda limiter should I be setting on my bins ? I had it set at 135volts just by ear and by the massive sound I didn't push it any further, that is peak 135 and my rms volts around 50-90 as read from amp display The drivers can take 89volts rms each but @ 8 ohms, so does that half when you run them at 4 ohm ? Sound Callum
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Speaker Sol
Young Croc Joined: 15 September 2009 Location: Ireland Status: Offline Points: 1320 |
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Hi.
I suspect you can go a bit higher with the limiters, but it does depend on the type of music you are playing and your low cut frequency. I would recommend that you keep an eye on the average current screen and check at what point your cones start getting hot, as this will be the long term limit for your drivers. The PKN limiter is very good, but it is still not a long term 'real power' limiter like that found in the Powersoft. |
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callumtruds
Registered User Joined: 10 November 2015 Location: ireland/england Status: Offline Points: 46 |
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Liquid, jungle, dark drum and bass, some dub and reggae :)
Low cut is 48hz -3db with a 48db slope linkweitz Riley, Hit cut is about 110 with a 24db slope, eq'd to style of music, IL bring the limiter back a little and see what it sounds like, How would you test for cones being hot in a 1850 horn ? No heatsink to feel either, could blast them for a few hours then rip the back panel off and measure quickly :p It's actually jacks old pkns Coming from amps with no proper limiter I'm in love with the pkno limiter Thanks Callum Edited by callumtruds - 08 November 2018 at 7:47pm |
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Are you actually seeing it limit? Does the AGR light come on at any point?
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toastyghost
The 10,000 Points Club Joined: 09 January 2007 Location: Manchester Status: Offline Points: 10920 |
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If anything peak of 135v is a touch high. You won’t get any real world improvement by putting it any higher.
Edited by toastyghost - 08 November 2018 at 8:33pm |
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callumtruds
Registered User Joined: 10 November 2015 Location: ireland/england Status: Offline Points: 46 |
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I keep the agr light off for the most part, on peaks of some songs it tips and I take it back .5db, but I like to keep it only that 0.5db off the agr light.
Because they are 89v at 8 ohm does this mean they only need 45 volts at 4 ohm ? The amp is also reading morelike 5-7 ohms with it rarely dropping to 4 ohms Sound Callum
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fatfreddiescat
Young Croc Joined: 15 October 2010 Location: N.E.Wales Status: Offline Points: 1081 |
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Same voltage, look up 'ohm's law' which may help.
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callumtruds
Registered User Joined: 10 November 2015 Location: ireland/england Status: Offline Points: 46 |
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Ah I didn't think to look at the laws of electric ! Would have been the place to start....
Thanks Callum
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knockout11
New Member Joined: 17 December 2011 Location: Bulgaria Status: Offline Points: 2 |
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http://www.peterpapp.com/pictures/index.php?twg_album=Amps&twg_show=xe_rear_adv.jpg#65
This is the formula for the PKN limiter XE series Edited by knockout11 - 14 January 2019 at 8:56pm |
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callumtruds
Registered User Joined: 10 November 2015 Location: ireland/england Status: Offline Points: 46 |
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Thank you that clears up exactly what I need !
Handy selection of pictures ,, Working out being a safe limit of 125 volts, may raise a little when playing music myself. Thanks
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toastyghost
The 10,000 Points Club Joined: 09 January 2007 Location: Manchester Status: Offline Points: 10920 |
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I wouldn’t. That is well into solely heating territory for less than a decibel extra output, ignoring thermal compression. The long term RMS capability of those drivers in that box is about 300w each, tops.
Edited by toastyghost - 27 January 2019 at 12:30am |
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