Chevin A6000 @ 2ohm sub - VZ5 killer or not? |
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RENSAAB
Registered User Joined: 21 July 2005 Status: Offline Points: 402 |
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"...The Mosfets are the Exicon double die T03 cans, eighteen complementary pairs in each channel.
The amp is literally dual mono, 2 units held together by the front and side panels. Each unit is in bridge mode. I suppose this is so that the devices can be relatively low voltage, 160V for the A5000 and 200V for the A6000..." The amp just looks too small to accomodate enough heatsinks for 3000w@ 2ohm bridged/channel for sub duty. The o/p devices must be working close to their electrical limit!
No suprise it overheated while bench testing!
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"The secret of the Scoop, what a wonderful piece of Science" - Tony ASS.
"when the amplifier and voice coil are in complete synchronicity there is magic" - A Well Respected Amp Guru |
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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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Ren, would the over heating be due to under specc'd o/p channels, or heatsinks/fans/air circulation? |
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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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Chris I Rockas
Registered User Joined: 16 April 2007 Location: United Kingdom Status: Offline Points: 75 |
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"No suprise it overheated while bench testing!"
Good point. There is quite a lot of heatsink in them, though, more so because there is extra space due to the compactness of the PSU. |
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Think you can, you will. Think you can't, you won't.
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andyamp
Old Croc Joined: 21 July 2007 Location: United Kingdom Status: Offline Points: 2115 |
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some one post a picture of the inside of the chevin.
please i bridged 2 ukp2100's against the vz5000 (opps vz 3850 for 1 second) then tripped outamp similar to the chevin amp so i vote for the chevin same fets as in the ukp2100 |
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a wise man changes his mind a fool does not.
http://www.matrixamplification.com/ |
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andyamp
Old Croc Joined: 21 July 2007 Location: United Kingdom Status: Offline Points: 2115 |
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ken dibble "twoddle" old ken should show us a pa amp that can run continuously
i bench tested the vz5000 and i had a heart attack when it went off at about 1 second, thought i it up and i unpacked it from new. but it reset its self. bet the chevin does more than 1 second. the chevin amps are class AB with a switching power supply, so what Mr dibble is goining on about smps all More like D D drible |
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a wise man changes his mind a fool does not.
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RENSAAB
Registered User Joined: 21 July 2005 Status: Offline Points: 402 |
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I could be wrong but i don't believe there's enough o/p devices/heatsink surface area to dissipate that kind of power long term. Let's not forget when you bridge an amp the power dissipation quadruples. This amp is specced to drive 2ohms/channel which if my calculations are correct means a combined peak output current of approx 150A...massive voltage drops...rapid heat build up!
Lots of o/p trannies to spread the load and a massive heatsink to get rid of the heat or....
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"The secret of the Scoop, what a wonderful piece of Science" - Tony ASS.
"when the amplifier and voice coil are in complete synchronicity there is magic" - A Well Respected Amp Guru |
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andyamp
Old Croc Joined: 21 July 2007 Location: United Kingdom Status: Offline Points: 2115 |
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if it has +- 85v rails it can swing 160 volts thats not massively big 80 amps the twin die fets are 16amps each 8 pairs per channel 128 amps less RDS on and wiring and I sat
so if it has 8 pairs off fets per channel then it is well in i think the problem is finding cabs that can take that power |
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a wise man changes his mind a fool does not.
http://www.matrixamplification.com/ |
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RENSAAB
Registered User Joined: 21 July 2005 Status: Offline Points: 402 |
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Levy, it's probably best to just listen to the amp and judge for yourself.
I've voiced my concerns regarding the heat issue based on my experience with amps. I couldn't relax around this one at 2ohm bridged per side for prolonged periods.
It may be interesting to compare it with a another amp capable of 20hm bridged!
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"The secret of the Scoop, what a wonderful piece of Science" - Tony ASS.
"when the amplifier and voice coil are in complete synchronicity there is magic" - A Well Respected Amp Guru |
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tweeter box
Old Croc Joined: 21 October 2007 Location: United Kingdom Status: Offline Points: 6784 |
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i need an amp that'll play 4ohms a side comfortably, so im guessing one of these will do the business playing heavy sub?
shouldnt have any over heating problems at 4ohms should it?
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Static Age
Old Croc Joined: 14 November 2005 Location: Oxfordshire Status: Offline Points: 1652 |
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from my experience the A6000 will do sub at 4ohm per channel for as you would ever need it to. Its what i bought mine specifically to do.
Edited by Static Age - 28 August 2008 at 1:17pm |
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dubclot
Registered User Joined: 26 May 2010 Location: London Status: Offline Points: 373 |
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These specs seem off. The 2ohm load looks rediculous
Edited by dubclot - 21 February 2013 at 5:01pm |
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andyamp
Old Croc Joined: 21 July 2007 Location: United Kingdom Status: Offline Points: 2115 |
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its a bridged amp,quite possable
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a wise man changes his mind a fool does not.
http://www.matrixamplification.com/ |
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