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Post by Deleted on Jul 19, 2019 12:09:11 GMT
How many steps do you actually use ? Not many i would wager.
My volume control is not really a control at the moment cos i cant change volume. It's just a potential divider with two resistors per channel. I chose the values so the volume was useful with all sources and different CD's (volume between cd's is quite variable)
Plan is to get a high quality 24 way switch and have the highest volume setting at a level which is the loudest i will ever need it. This has some advantages - (1) nobody can have a loud party whilst i am not there and potentially blow my amps and speakers (2) I can use resistor values that are closer together and so the volume change between steps will be much less and act more like a 48 step but over a reduced range.
Hope this makes sense. The other option is to use 12 steps of the 24 way switch with the original values and save some money (posh resistors are expensive and you can only use 4 at once on a stereo amp)
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Post by macca on Jul 19, 2019 12:27:48 GMT
I used 4 steps on mine. As you say just to account for the different loudness levels of recordings on CD. Each step was 3dB so you need a 12db range, maybe another 3db either side just in case and that should be enough.
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Post by dsjr on Jul 19, 2019 12:31:52 GMT
24 steps seems enough for many users, but for me it was always too quiet or too loud, especially with the insensitive krell where I seemed to be using the top half of the control with the top three steps especially and with massive difference between each one... Some of you really do feel that posh resistors make a difference, so I can't say more on that score. Just look inside your power amps and see what's there. Stu, your NVA boards have bog standard 1% types all through. Real subjective differences come from how these particular boards are used imo, not bloomin' resistor types, honestly guv'nor... although posher resistors on the 'SA' preamps gave a selling point as much as anything else and 'enthusiasts' love this kind of thing  |
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Post by macca on Jul 19, 2019 12:37:10 GMT
I had no bother with the P90SA and your Krell so that's weird. Volume was always one side or t'other of 12 o'clock. And never had a problem getting the volume level 'right' either.
I suppose the output level of the source and the sensitivity of the speakers also comes into play.
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Post by antonio on Jul 19, 2019 13:47:27 GMT
With the P90sa you sold me Macca ( loving it by the way) I'm at 1 o'clock for pretty much everything, LP's and cd's using a A60 amp.
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Post by dsjr on Jul 19, 2019 14:04:36 GMT
Remember I had the all the Krell bias lights on when listening at lunchtimes in the workroom (I had no idea the IMF Compact mk1's could take it, but they did  ) and the thing got pretty hot within five minutes. I never played it like this for more than half an hour though. I took the Krell downstairs and had the middle lights on, the amp cooking again even with the cabinet doors open and it was this that prompted me to sell it on as it really needs to be free standing and often between the speakers, keeping speaker leads as short as possible I think.. (Seems like the KSA100's hitting the spot - I'm glad). |
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Post by macca on Jul 19, 2019 14:41:49 GMT
With the P90sa you sold me Macca ( loving it by the way) I'm at 1 o'clock for pretty much everything, LP's and cd's using a A60 amp. Yeah that is a great bit of kit. I took that to a fair few bake offs and it was right up there with the mega-money transformer passives. It just wasn't the perfect match with the Krell. |
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Post by Deleted on Jul 19, 2019 15:31:10 GMT
Thanks for the replies. I will have a bit of a play and see how few positions i can get away with.
No point having all those resistors (and the faff of soldering them all in) if you don't need them.
I can have a play with a few different resistor types as i only need four at the moment (2 x 10K and two about 760R).
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Post by sq225917 on Jul 19, 2019 19:53:28 GMT
On the 64 step khozmo I used about a 20db range from late night kids asleep to empty house party levels.
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Post by Deleted on Jul 20, 2019 6:00:53 GMT
On the 64 step khozmo I used about a 20db range from late night kids asleep to empty house party levels. 64 steps is just insane. |
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Post by macca on Jul 20, 2019 7:23:38 GMT
No-one would buy an amp with only 6 volume settings which is why you don't see them. But I think you are right, there's not really any need to have any more than that.
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Post by dsjr on Jul 20, 2019 7:44:04 GMT
Well, when you're single and can do what you like at whatever volume you like ( ) then I suppose you're right. The rest of us have family sharing our living spaces as well as neighbours (detached homes aren't all well soundproofed either) and believe me, a fully functioning volume control is a must in these situations.. |
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Post by Deleted on Jul 20, 2019 7:44:07 GMT
No-one would buy an amp with only 6 volume settings which is why you don't see them. But I think you are right, there's not really any need to have any more than that. You’re probably right but your 6 steps would be different to mine and to other people. The amps with coarse and fine adjustment make more sense then each could probably be 6 steps and we’d all be fairly happy |
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Post by macca on Jul 20, 2019 7:57:23 GMT
Well, when you're single and can do what you like at whatever volume you like ( ) then I suppose you're right. The rest of us have family sharing our living spaces as well as neighbours (detached homes aren't all well soundproofed either) and believe me, a fully functioning volume control is a must in these situations.. True but I rarely play loud. As system has got better I've found it isn't necessary to crank it right up to get the benefit. And I only use it between 1100 and 2200. No late night sessions. Neighbours have never complained in 21 years so can't seem them starting now. |
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Post by Deleted on Jul 20, 2019 8:13:52 GMT
As this will be a diy project and i wont be changing kit when my system is finished i can build it for me and my situation. I never play loud as there is no need.
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) and the thing got pretty hot within five minutes. I never played it like this for more than half an hour though. I took the Krell downstairs and had the middle lights on, the amp cooking again even with the cabinet doors open and it was this that prompted me to sell it on as it really needs to be free standing and often between the speakers, keeping speaker leads as short as possible I think..