BigTony
500+ Head-Fier
- Joined
- Jul 7, 2008
- Posts
- 985
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- 13
I might just pop the hood on the amp this weekend and have a butchers inside; i'll use a blunt pencil to poke about.
Originally Posted by BigTony /img/forum/go_quote.gif What I think he meant to say was 'Have the signal tubes had 100 hours of burn in' after 100 hours there should be no hum. My 332S hummed right out of the box, now after about 40 hours of use the hum is only in the lefthand side and is much quieter than when I first turned the amp on. I had planned to run the amp for a week (or about 100 hours) to bed everything in, so don't be too alarmed at noises right out of the box. |
Originally Posted by yuking09 /img/forum/go_quote.gif 6 * 1是70年前的苏联管,比我年龄还要大。本身发热量小,所以很难烧出来。一个星期每天烧18个小时,我只烧 了两三只出来。耐心烧管哈,烧不出来我发两只烧透澈的给你。 |
Originally Posted by arie123 /img/forum/go_quote.gif Mullet: if I understand correctly you don't hear any hum with the HD650? I have the same headphones but I do get som clearly noticeable hum with my 332s. To me it makes no sense then it would be inherent to the design (proximity of signal to power wires), like Ogyga suggested. Or are there other factors in play that may be exacerbated by this design feature? |
Originally Posted by BigTony /img/forum/go_quote.gif ok - i'll look out for sensibly priced attenuators, £39 for a pair is steep! |
Originally Posted by Mullet /img/forum/go_quote.gif So you actually need attenuators for the 332s? I'm at about 9 - 10 o'clock with my 332c. I have an iPhone with SendStation mini USB LOD > Belkin mini to RCA > 332c > HD650s. With my Shure SE530s I can get it to 7 o'clock before its too loud. ~Mullet |
Originally Posted by Mullet /img/forum/go_quote.gif How high is this hum? Is it really noticeable? ...... What are your source components etc? Could it be something in your signal path? ~Mullet |
Originally Posted by BigTony /img/forum/go_quote.gif Yeah, the lowest balanced level is much to loud for me, you can hear the music clearly with my hd650s sat next to the amp - 6 feet away from my ears! To compare, on my Jade amp i need to switch to high gain and turn the amp to 3-6pm.. its that loud! |