I have a near obvious question about my AVR. When I go to check the OS, it says that I have an AVR 630 v5.02. Does that indeed mean that I have the 630 OS on my 430? I got it through Harman Direct off of eBay. So it could be a 630 with an AVR 430 face plate right or what I have no idea tell me what you guys think.
I have questions regarding the AVR 430 receiver. My receiver doesnt produce sound below -50db. I dont hear anything on my speakers. Is there something wrong in the receiver or speakers. I am using a cheapy KLH speakers.
um, i dont think it means your reciever is broken. it just means that the reciever isnt giving the speakers enough juice to produce sound. if you have really ineffecient speakers than it takes alot more power to produce the same SPL, hence a higher volume level for the same amp/reciever. the more likely problem you will run into is turning the volume too high. you may either clip the signal or feed the speakers more power than they were designed for. just turn the volume up and enjoy them.
Peter, I forgot where I read or seen this. H/K states that 0dB is where the power is "guaranteed" to be clean (0dB with all settings bass and treble set to flat and no digital processing engaged). At 0dB the H/K AVR line outputs 1/2 of rated power. So, on my AVR-525... a setting of 0dB would be approximately 35-45W of power (per channel).
H/K warns of increasing over 0dB as each 3dB is double the power. While the receiver will handle +3dB (relative power) probably quite well, the ability to deliver continuous power above +3dB accross all frequencies dminishes greatly. This is where the THD goes to pieces (> 1.0% THD).
I really wish I could point you to an exact article or document. I think that I, and several others, had sent e-mails into Harman Kardon support earlier last year asking questions in this area.
It would be an interesting factoid if you can find it again.
I just finished listenning to music at -35 dB on the dial anyway, so 0dB is not something I see very often. Loud movies are at -25 dB or so (reference is at -17 dB). I get up to -10 to -7 dB playing The Eagles Hell Freezes Over, but not when the kids are sleeping!