Question About Wattage.

[Seth=L]

What does this loosely translate to from 20hz-20Khz?

"All channels-driven surround power: 100W x 6 (1kHz, 0.06% THD, 6ohm)"

This is about a receiver made for Best Buy by a company called Aivin. Model # for Insignia model is IS-HC040917. Model # for Aivin is S610TR.

Thanks for your help in advance.

 

[zildjian]

Those specs mean just what they say, @ 1000 hertz into 6 ohm, with 0.06% THD; so you canNOT assume that it will perform that well from 20-20000 hertz. 6ohms = amp will be able to put out more wattage, specs posted just at 1000 hertz, doesn't show the limitations of performance when tested over the 20-20k frequency range. I think there's a thread somewhere back on this forum that discusses all this way more than we can get into here.

 

[Seth=L]

What I mean is, how many watts would it loosely have if it was rated from 20hz-20khz as apposed to 1khz? I fully understand that 1khz is an easy tone to play. I just want to know if there is some kind of conversion rate.

 

[zildjian]

Ah. No such conversion rate, too many variables between different amps & different manufacturers for that matter. Try to find a professional review of the product you are wondering about and see if they did any testing of it. Manufacturer's specs can be fishy anyhow pending on who puts them out.

 

[Seth=L]

There aren't any specific reviews of this receiver.

 

[PENG]

What I mean is, how many watts would it loosely have if it was rated from 20hz-20khz as apposed to 1khz? I fully understand that 1khz is an easy tone to play. I just want to know if there is some kind of conversion rate.

Seth, I think it depends. For something like an Arcam, Yamaha 100W at 1khz 0.2% THD will probably get you 75 to 90W at 20-20,000 hz 0.05%. Like you said, "loosely", nothing exact.

 

[Ron Temple]

FWIW, Onkyo published it's HTIB specs for the 5xx receiver in the 1khz @ 6 ohm spec at 130wpc format. The same receiver, 502,3,4 was 75wpc 20-20 @ 8ohms. I'm sure it varies by manufacturer, but the 1k/6 spec, IMO is a red flag for "don't believe me".

 

[Seth=L]

Someone else did a translation to the best of their abilities. they came up with around 52 watts 8 ohms. But this is all channels driven, in my opinion that isn't that bad, not for $150 anyways.

 

[MDS]

FWIW, Onkyo published it's HTIB specs for the 5xx receiver in the 1khz @ 6 ohm spec at 130wpc format. The same receiver, 502,3,4 was 75wpc 20-20 @ 8ohms. I'm sure it varies by manufacturer, but the 1k/6 spec, IMO is a red flag for "don't believe me".

I just checked the manual for the 502 and it says 105w@6ohm@1kHz. I bet the THD rating they used for the HTIB version of the same receiver is slightly higher, allowing them to quote a slightly higher number.

As has been said there really isn't any way to do a conversion between the two but as a rule of thumb you can probably subtract 25% and be close.

 

[mtrycrafts]

Someone else did a translation to the best of their abilities. they came up with around 52 watts 8 ohms. But this is all channels driven, in my opinion that isn't that bad, not for $150 anyways.

Not sure you can properly translate those to an 'all channels' driven number without actually bench testing.

At 8 ohms, same 1kHz and THD, you will get less power, or course. At 6 ohms, 20-20k, same THD you will get less power and rules of thumb.

That 1kHz is just 1 frequency to drive. That is why it puts out more power, not because it is 1kHz. I bet if it was tested at 2kHz, you'd get the same power?

 

[Seth=L]

The manufacturer states that it is "all channels driven". What you see in my first post is quoted from the Aivin site, that doesn't mean they are honest of course. I am also remarking on the parts used and power consumption, which happens to be 500 watts, and that these aren't common things to be seen in such low priced receivers. After Christmas I will know, cause I am going to get one and review it. If I like it I may keep it, if I don't I will return it. It is quite simple really.

 

[no. 5]

the %.06 THD would seem to indicate that the amplifers were not overly strand in there delivery of the "100 watts at 1kHz @6 ohms", often cheep receivers are at %0.1 THD or higher, showing that thst thay are working harder to dilever the power.