![](/boards/images/icons/default/book.gif) Re: VP180
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htnut
Unregistered
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htnut
Unregistered
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What is the pricing going to be on the VP180 stand? $240, and you get two stands, presumably one for each end. forgot to mention pre-order for $200
Last edited by htnut; 05/03/10 03:51 PM.
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![](/boards/images/icons/default/book.gif) Re: VP180
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Joined: Jul 2004
Posts: 4,444 Likes: 16
connoisseur
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connoisseur
Joined: Jul 2004
Posts: 4,444 Likes: 16 |
Micah, when two speakers are run in parallel the resulting impedance is such that its reciprocal is the sum of the reciprocals of the impedances of the two speakers. Using 6 and 4 ohms, this works out to 1/6+1/4=1/X, 2/12+3/12=1/X, 5/12=1/X, 5X=12, X=2.4ohms.
Keep in mind that the nominal impedance ratings of speakers don't represent their impedance over their entire range(the 4ohm rating on the M80s is a notable example)and that 2.4ohm result would only apply at a frequency where the speaker impedances were in fact 6 and 4 ohms. Also note that a low impedance doesn't necessarily cause a problem if the power used at the low impedance frequency wasn't high enough to require an excessively high current. John – What do you think about running the VP180 below the screen and a VP150 above the screen? I’m wondering if that would be a good idea or not. I’m thinking not, but curious nonetheless.
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![](/boards/images/icons/default/book.gif) Re: VP180
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Joined: Jan 2002
Posts: 3,270
connoisseur
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connoisseur
Joined: Jan 2002
Posts: 3,270 |
Hi michael_d,
I think not as well, although I did not do listening tests to that combination while I was up at Axiom.
One of my Axiom colleagues, JC (Jean-Claude), has a dedicated home theater room and will try that combo once he has a sample of the VP180. He currently uses two VP150s, one above and one below his projection screen.
Sadly, I don't have room for a VP180 in my apartment. I'll have to think about buying a house so I can accommodate a VP180!
Regards, Alan
Alan Lofft, Axiom Resident Expert (Retired)
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![](/boards/images/icons/default/book.gif) Re: VP180
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Joined: Feb 2008
Posts: 44
buff
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buff
Joined: Feb 2008
Posts: 44 |
Sadly, I don't have room for a VP180 in my apartment. I'll have to think about buying a house so I can accommodate a VP180!
That makes the VP180 really expensive. -Dave
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![](/boards/images/icons/default/book.gif) Re: VP180
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Joined: Jan 2004
Posts: 13,846 Likes: 13
shareholder in the making
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shareholder in the making
Joined: Jan 2004
Posts: 13,846 Likes: 13 |
side ports might have been an option as well.
M80s VP180 4xM22ow 4xM3ic EP600 2xEP350 AnthemAVM60 Outlaw7700 EmoA500 Epson5040UB FluanceRT85
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![](/boards/images/icons/default/book.gif) Re: VP180
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Joined: Jul 2004
Posts: 4,444 Likes: 16
connoisseur
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connoisseur
Joined: Jul 2004
Posts: 4,444 Likes: 16 |
Hi michael_d,
I think not as well, although I did not do listening tests to that combination while I was up at Axiom.
One of my Axiom colleagues, JC (Jean-Claude), has a dedicated home theater room and will try that combo once he has a sample of the VP180. He currently uses two VP150s, one above and one below his projection screen.
Sadly, I don't have room for a VP180 in my apartment. I'll have to think about buying a house so I can accommodate a VP180!
Regards, Alan Please keep me informed after JC has a chance to try this combo. I am very happy with my current center set up (lower twin M22's) and an upper VP150. I will not give up the upper / lower combination.
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![](/boards/images/icons/default/book.gif) Re: VP180
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Joined: Feb 2004
Posts: 1,863
connoisseur
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connoisseur
Joined: Feb 2004
Posts: 1,863 |
The only way you could wire a VP-150 and VP-180 in series using the current hardware is to. Hook up the (+) from the amp to the first speakers (+) and use a jumper from the (-) of the first speaker to the (+) of the second speaker, then plug the (-) wire from the amp to the (-) of the second speaker.
it wouldn't be that complicated, but you would need your power wires to be 2 separate pieces of wire.
I have a EE background.
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![](/boards/images/icons/default/book.gif) Re: VP180
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Joined: Jun 2003
Posts: 8,488 Likes: 1
axiomite
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axiomite
Joined: Jun 2003
Posts: 8,488 Likes: 1 |
Right - 3 single wires instead of a pair.
bibere usque ad hilaritatem
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![](/boards/images/icons/default/book.gif) Re: VP180
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Joined: Feb 2009
Posts: 3,466
connoisseur
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connoisseur
Joined: Feb 2009
Posts: 3,466 |
The serial interaction of the impedance of two complex networks such as speaker systems is bad enough when they have the same curve. Two dissimilar speakers will have very unpredictable (well, very hard to compute) results.
When a cross-over network is being designed for a speaker, the sensitivity of each driver is taken into account, to achieve a linear response when everything is combined. It's fine to wire two fixed resisters in series, you just add up their resistance and the sum is also fixed. But that's not how a loud speaker system works. You'll end up with a non-linear response with areas of higher impedance stacking up higher than the lows.
It's then obvious how much worse it would be with two different speakers interacting with each other.
Pioneer PDP-5020FD, Marantz SR6011 Axiom M5HP, VP160HP, QS8 Sony PS4, surround backs -Chris
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![](/boards/images/icons/default/book.gif) Re: VP180
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Joined: Feb 2004
Posts: 1,863
connoisseur
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connoisseur
Joined: Feb 2004
Posts: 1,863 |
neon, I'm not saying its a "great" idea, just that it "is" possible. and a way to do it without having a sub 2ohm load to the amp....
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