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Volume Controls better @ 11:00 and above

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Richardl60 View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Richardl60 Quote  Post ReplyReply Direct Link To This Post Posted: 23 Mar 2016 at 4:45pm
Dave if you bought your high power amp by the way it sounded not sure what other way you should have done it? Argument is a little like why drive a car that can do 120 mph?

Which pmcs do you have out of curiosity Bob?

Richard
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morris_minor View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote morris_minor Quote  Post ReplyReply Direct Link To This Post Posted: 23 Mar 2016 at 6:50pm
PMC Gb1i floorstanders, Richard. Their entry level model of a few years ago.
Bob

Majestic DAC/pre-amp
Accession MC/Enigma, Accession MM, Reflex M, Elevator EXP, Era Gold V
Solo ULDE, Novo, Lautus USB and digital, Libran balanced, CuSat50
2 x Proprius + Spatia/Spatia Links
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Richardl60 Quote  Post ReplyReply Direct Link To This Post Posted: 23 Mar 2016 at 7:55pm
Thanks. I am a transmission line fan brought up on the big IMF and now have some smaller (proper) tdls. Have briefly listened to the .23 and ob1i but not seriously.   

Richard
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Post Options Post Options   Thanks (0) Thanks(0)   Quote morris_minor Quote  Post ReplyReply Direct Link To This Post Posted: 24 Mar 2016 at 7:52am
If I the space (and the bank balance Shocked) I'd be tempted by these: LOL


Bob

Majestic DAC/pre-amp
Accession MC/Enigma, Accession MM, Reflex M, Elevator EXP, Era Gold V
Solo ULDE, Novo, Lautus USB and digital, Libran balanced, CuSat50
2 x Proprius + Spatia/Spatia Links
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Graham Slee Quote  Post ReplyReply Direct Link To This Post Posted: 24 Mar 2016 at 11:09am
Getting back on topic Wink, Bruce has been explaining why most amps tend to sound best at 11 o'clock volume setting.

I've also been having a private technical conversation with Bruce of how our products don't suffer the 11 o'clock "sweet spot". This came about through my work on audio mixers as well as the desire to make headphone amps with what I call "Z-matched" volume controls.

As a result customers are able to use our volume controls in just about any position - to suit the wanted volume - and the sound will be just the same.

Not simple enough for Google-Bot to understand...
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Paul H Quote  Post ReplyReply Direct Link To This Post Posted: 24 Mar 2016 at 12:44pm
Originally posted by DaveG DaveG wrote:

This is interesting & informative stuff. It begs the question though - what is the rationale behind using high powered amps for normal home use when it means you can't use anything like the full full volume range? When I bought mine I vaguely remember stuff like "reproducing dynamics, avoidance of clipping and the ability to drive difficult loads" being cited.

This gets to the nub of the issue. Granted, if an amp sounds good, it is good but, in a world of a million choices, one has to find some way of narrowing down the field into something manageable that can form the basis for a series of auditions.

If one is is weeding out all the low powered amps before getting to the demo stage one may find a high powered amp that sounds fine but might be missing lower powered amps that would have been better.

I'm reluctant to ask for recommendations for my own set up because, obviously, this site is intended to promote one particular brand of amp but - not to be blunt about it - I can't afford them so would, reluctantly, have to look elsewhere if and when the time comes to go amp shopping. It would be good to get some informed advice about what to look for, what to avoid when trying to narrow the field.
ProJect 1Xpression Carbon UKX w/ Ortofon 2M Black; Arcam Alpha 7 CD player; Graham Slee Revelation M pre; Denon PMA 355UK amp; Epos K1 speakers; Blue Jeans LC-1 interconnects. Room: 2.9m x 3.1m.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Paul H Quote  Post ReplyReply Direct Link To This Post Posted: 24 Mar 2016 at 1:10pm
Here's some advice I found on the net, just by way of example:

Zak: But once you're aware of all this you still need to figure out just how much power you need to drive your speakers. The first thing to remember is that it's better to have more power.

Ken: Right. You want your amp to be able to play all your music, loud and soft, without distortion, and be able to handle sudden changes in volume easily.

Zak: Yeah, and more power gives you just that. It's something that we call "headroom."

Ken: As a starting point consider the RMS power ratings of your speakers or subs. Match or better yet, exceed the speaker power ratings with your amplifier.

Zak: For example, to get that headroom, if you have a subwoofer that handles 200-watts RMS, power it with an amp that puts out 250-watts RMS.

Ken: It'll drive it cleanly and without distortion, especially when the volume is cranked and it'll do it better than an amp with less power. More power is always better.

ProJect 1Xpression Carbon UKX w/ Ortofon 2M Black; Arcam Alpha 7 CD player; Graham Slee Revelation M pre; Denon PMA 355UK amp; Epos K1 speakers; Blue Jeans LC-1 interconnects. Room: 2.9m x 3.1m.
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