| Author |
Thread: Confusion about power output |
    
Bronze Member Username: Decker
Post Number: 14
Registered: Jun-04
|
| Posted on Tuesday, August 10, 2004 - 08:50 pm: |
|
I am trying to sell my home stereo system, and I'm really confused how the power output calculation works. It's a panasonic SC-AK520, with two main speakers and a subwoofer. Each main speaker is bi-amped (whatever that means), but all I know is each main speaker has 4 analog hookups instead of the normal 2.
On a sticker on the front of my system, it has all the power output stats. There's two columns.
In the first column:
65W x2
(1 kHz, 6 ohms, 10% THD)
65W x2
(1 kHz, 6 ohms, 10% THD)
160W
(80 Hz, 8 ohms, 10% THD)
In the second column:
55W x2
(60 Hz - 3 kHz, 6 ohms, 10% THD)
55W x2
(60 Hz - 3 kHz, 6 ohms, 10% THD)
140W
(40 - 100 Hz, 8 ohms, 10% THD)
Then in very bold text: "TOTAL: 420 Watts"
I'm very confused how they calculated that. Can anyone shed some light on this for me?
|
|
|
|
Gold Member Username: Project6
Post Number: 1139
Registered: Dec-03
|
| Posted on Tuesday, August 10, 2004 - 10:25 pm: |
|
It is what it is...something to confuse the lay person. The bait for the buyer who follows the numbers and is easily impressed by them. You can sell in that manner and you will surely get a bite. If you are trying to sell this item, just copy the numbers and don't bother trying to figure it out.
They are basically just adding the highest number they can find in their specs and totalling them. Not really false advertising but a great way to lure buyers. Wattage output claims are not regulated much like ingredients in food by the federal government and there are no standards set for measuring.
So, get out the old manual and copy the spec sheets. |
Gold Member Username: Kegger
MICHIGAN
Post Number: 1144
Registered: Dec-03
|
| Posted on Tuesday, August 10, 2004 - 10:35 pm: |
|
the best thing to do is just put down all the pieces
you have.
brand/model, like berny said wattage doesn't really mean anything.
if someone is serious about your system they will
either allready know the components or look them
up.
so just list everything you have for sale. |
Bronze Member Username: Decker
Post Number: 15
Registered: Jun-04
|
| Posted on Tuesday, August 10, 2004 - 11:11 pm: |
|
Okay, that's helpful...I myself have not been a Wattage chaser, I have always assumed it was like clock speed on CPU's - a marketing point, but not all that matters.
But anyway, I am trying to sell it, but can anyone explain how those numbers even total to 420 watts?
Or do they really make the stats up? |
Gold Member Username: Kegger
MICHIGAN
Post Number: 1145
Registered: Dec-03
|
| Posted on Wednesday, August 11, 2004 - 02:56 am: |
|
65W x2 = 130
(1 kHz, 6 ohms, 10% THD) +
65W x2 = 130
(1 kHz, 6 ohms, 10% THD) +
160W = 160
(80 Hz, 8 ohms, 10% THD) -----
420 if the #'s are right
it's probably worth $50-$100 used see below for new.
http://www.bizrate.com/marketplace/product_info/overview/index__cat_id--11610000 ,prod_id--11631262.html
or hear
http://www.walmart.com/catalog/product.gsp?product_id=2612168&cat=4479&type=19&d ept=3944&path=0%3A3944%3A3987%3A96890%3A4479 |
Gold Member Username: Kegger
MICHIGAN
Post Number: 1146
Registered: Dec-03
|
| Posted on Wednesday, August 11, 2004 - 02:58 am: |
|
anyways you would do
130+130+160=420
my lines got messed up on the previous post. |
Gold Member Username: Kegger
MICHIGAN
Post Number: 1147
Registered: Dec-03
|
| Posted on Wednesday, August 11, 2004 - 03:00 am: |
|
darnit that 1st link doesn't work.
anyways the second one shows all you need to know. |
Bronze Member Username: Decker
Post Number: 17
Registered: Jun-04
|
| Posted on Wednesday, August 11, 2004 - 03:21 am: |
|
If 65 is used, where do the 55W numbers come in? |
Gold Member Username: Project6
Post Number: 1140
Registered: Dec-03
|
| Posted on Wednesday, August 11, 2004 - 07:18 am: |
|
the 55w usually is there if the unit has dual voltage capability. One rating is for 220V and the other is for 110v. |
Bronze Member Username: Decker
Post Number: 18
Registered: Jun-04
|
| Posted on Wednesday, August 11, 2004 - 03:26 pm: |
|
So if the unit has dual-voltage capacity and is plugged into a normal 120V wall socket, it will get 55*4+140 or 360W...and if it's in a 240V socket, it will output 65*4+160 or 420 watts? |
Gold Member Username: Project6
Post Number: 1162
Registered: Dec-03
|
| Posted on Wednesday, August 11, 2004 - 04:50 pm: |
|
Yes.
Those numbers are so easy to manipulate, aren't they? |
Bronze Member Username: Decker
Post Number: 20
Registered: Jun-04
|
| Posted on Thursday, August 12, 2004 - 05:08 am: |
|
Thanks Berny. Can I hug you? |
