You are not logged in. [Log In]


Forums » General Discussion » Home Theater » Is my hk powerful enough

Page 1 of 3 1 2 3 >
Topic Options
Rate This Topic
#184433 - 11/18/07 06:19 AM Is my hk powerful enough
Titan Offline
newbie

Registered: 11/17/07
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.

Top
#184435 - 11/18/07 06:32 AM Re: Is my hk powerful enough [Re: Titan]
EFalardeau Offline
connoisseur

Registered: 08/27/07
Posts: 3397
Loc: Laval, Quebec, Canada
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
_________________________
E = MC2 = ((2M80 + VP180 + 4QS8)/(EP800 + EP500))^(ADA1500 x D2v)
AxiomAir/6xM2/4xM22/2xVP150/2xM3

Top
#184439 - 11/18/07 08:04 AM Re: Is my hk powerful enough [Re: EFalardeau]
SirQuack Offline
shareholder in the making

Registered: 01/29/04
Posts: 13565
Loc: Iowa
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
Anthem AVM60 Outlaw 7700 Emotiva A500 Epson 5040UB



Top
#184442 - 11/18/07 08:55 AM Re: Is my hk powerful enough [Re: SirQuack]
Wid Offline
axiomite

Registered: 06/22/03
Posts: 6789
Loc: The Peoples Republic of Il.
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


Top
#184490 - 11/18/07 04:58 PM Re: Is my hk powerful enough [Re: Wid]
Mojo Offline
connoisseur

Registered: 01/21/07
Posts: 4613
 Originally Posted By: wid
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.

Top
#184504 - 11/18/07 06:23 PM Re: Is my hk powerful enough [Re: Mojo]
Wid Offline
axiomite

Registered: 06/22/03
Posts: 6789
Loc: The Peoples Republic of Il.

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


Top
#184510 - 11/18/07 11:46 PM Re: Is my hk powerful enough [Re: Wid]
jakewash Offline
shareholder in the making

Registered: 12/26/03
Posts: 10415
Loc: Calgary, Alberta
I am taking Axiom on their printed specs and going with, it is 1 watt - 2V
_________________________
Jason
-----------------
TTTHHHPPPPPTTTT!

My HT

Top
#184515 - 11/19/07 12:47 AM Re: Is my hk powerful enough [Re: Titan]
JohnK Offline
shareholder in the making

Registered: 05/11/02
Posts: 10621
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.



Top
#184519 - 11/19/07 02:25 AM Re: Is my hk powerful enough [Re: JohnK]
alexadams77 Offline
old hand

Registered: 07/31/07
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

Top
#184527 - 11/19/07 08:24 AM Re: Is my hk powerful enough [Re: Wid]
jakeman Offline
aficionado

Registered: 10/03/05
Posts: 853
Loc: Toronto
 Originally Posted By: wid

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

Top
Page 1 of 3 1 2 3 >

Moderator:  alan, Amie, Andrew, axiomadmin, Brent, Debbie, Ian, Jc 
Forum Stats

15,207 Registered Members
15 Forums
23,963 Topics
423,595 Posts

Most users ever online:
883 @ 03/04/17 05:06 PM

Top Posters
Ken.C 18044
pmbuko 16437
SirQuack 13565
CV 11675
MarkSJohnson 11437
0 registered ()
183 Guests and
4 Spiders online.
Key: Admin, Global Mod, Mod
Newsletter Signup