Is my hk powerful enough
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Joined: Nov 2007
Posts: 2
newbie
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OP
newbie
Joined: Nov 2007
Posts: 2 |
Hi I have been looking at the m80-500 system but dont realy know if my amp has enough punch to drive it. I have a Harmon Kardon 445. There suposed to handle 4 ohm but would it realy heat up? and would the speakers be very loud? mind you i dont need them to blow me out of the house though. Any advice would be a great help. Thanks.
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Re: Is my hk powerful enough
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Joined: Aug 2007
Posts: 3,488 Likes: 9
connoisseur
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connoisseur
Joined: Aug 2007
Posts: 3,488 Likes: 9 |
All the speakers in the EP80/500 set are very senstitive so you need only 1w of power to obtain 95db (loud) at 3 feet. So, depending on how far you will seated and the size of your room, your power requirements are going to change drammatically (you need twice the power to gain 3db).
For anyone to answer this question, you would need to provide the following answers: 1) Size of room 2) Seating position
See Mojo's signature
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Re: Is my hk powerful enough
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Joined: Jan 2004
Posts: 13,840 Likes: 13
shareholder in the making
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shareholder in the making
Joined: Jan 2004
Posts: 13,840 Likes: 13 |
You should not have any problems with the HK's driving m80's. Room size would help, as well as listening taste.
M80s VP180 4xM22ow 4xM3ic EP600 2xEP350 AnthemAVM60 Outlaw7700 EmoA500 Epson5040UB FluanceRT85
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Re: Is my hk powerful enough
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Joined: Jun 2003
Posts: 6,833
axiomite
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axiomite
Joined: Jun 2003
Posts: 6,833 |
The sensitivity of the M80s are 95db @ 1 watt @ 1 meter but 1 watt @ 4 ohm is only 2V not 2.83. We have never have got a clear answer as to what the measurement is into the 4 ohm M80s.
Rick
"A fear of weapons is a sign of retarded sexual and emotional maturity." Sigmund Freud
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Re: Is my hk powerful enough
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Joined: Jan 2007
Posts: 10,490 Likes: 116
shareholder in the making
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shareholder in the making
Joined: Jan 2007
Posts: 10,490 Likes: 116 |
We have never have got a clear answer as to what the measurement is into the 4 ohm M80s. Sorry, Rick. I don't understand what you mean.
House of the Rising Sone Out in the mid or far field Dedicated mid-woofers are over-rated
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Re: Is my hk powerful enough
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Joined: Jun 2003
Posts: 6,833
axiomite
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axiomite
Joined: Jun 2003
Posts: 6,833 |
They say one watt at one meter. If it is the standard 2.83v at 4 ohm it is not one watt. If they use one watt @ 4 ohm then it would be 2v. So how do they measure it, with 2v @ 4 ohm equaling 1 watt or the standard 2.83V which would be 2 watts?
Rick
"A fear of weapons is a sign of retarded sexual and emotional maturity." Sigmund Freud
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Re: Is my hk powerful enough
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Joined: Dec 2003
Posts: 10,420
shareholder in the making
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shareholder in the making
Joined: Dec 2003
Posts: 10,420 |
I am taking Axiom on their printed specs and going with, it is 1 watt - 2V
Jason M80 v2 VP160 v3 QS8 v2 PB13 Ultra Denon 3808 Samsung 85" Q70
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Re: Is my hk powerful enough
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Joined: May 2002
Posts: 10,654
shareholder in the making
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shareholder in the making
Joined: May 2002
Posts: 10,654 |
Titan, welcome. It's highly probable that your 445 would drive the M80s as loudly as you want(or would be safe for your hearing), but just about any amplifier's maximum power capability can be exceeded if someone would use an extremely loud average listening level with program material that has a very wide dynamic range.
Rick, your discussion of the difference between the 1 watt and 2.83 volt measuring standards when a 4ohm load is involved is correct, of course, but as Jason mentioned I've assumed that since Axiom specifically said 1 watt that they meant that rather than 2.83 volts. You're right that the possible difference has apparently never been discussed.
-----------------------------------
Enjoy the music, not the equipment.
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Re: Is my hk powerful enough
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Joined: Jul 2007
Posts: 95
old hand
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old hand
Joined: Jul 2007
Posts: 95 |
I think that we need a "Sticky" with all the compatible m80/4 ohm receivers, so this question stops coming up and so that we don't have to search all the time for it.
Receiver: Yamaha RX-V2200 Main: Axiom m80 CC: Axiom VP150 Surround: Axiom QS8 Sub: SVS PC13-Ultra
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Re: Is my hk powerful enough
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Joined: Oct 2005
Posts: 853
aficionado
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aficionado
Joined: Oct 2005
Posts: 853 |
They say one watt at one meter. If it is the standard 2.83v at 4 ohm it is not one watt. If they use one watt @ 4 ohm then it would be 2v. So how do they measure it, with 2v @ 4 ohm equaling 1 watt or the standard 2.83V which would be 2 watts?
It can be measured either way as long as the person making the measurement adjusts the sensitivity by 3db for the voltage (wattage) difference.
John
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