please tell me my fan is faulty

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Davidb
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Re: Standard needed

Post by Davidb »

maphill wrote:Unfortuantely,

We are have different ears and will notice the fan noise depending on our hearing, sensitivities, placement (desk vs. stand), and even room characteristics (carpet vs. wood, size, etc.).

This information would be much more useful if those of us who have a radio shack SPL meter do something like the following:

1. Set the meter to C-weighted, slow.
2. PLace at typical ear position pointed at board, or some other fairly reproducible position, perhaps 3" above the top of middle C, etc.
3. Watch the values in an absolutely silent room. No computers running, no lawn mowers outside, no kids awake in the house, HVAC off, etc.
4. Look at the average readout over 30 seconds or so.

Readings made close to the unit will be less influenced by room character.

(I'll do this when my Kronos arrives...)

Mark
Hi Mark .

Of course if you "just" play the keys, I mean, just perform on the instrument, you would not stress so much the system, therefore the fan will not has to work extensively, so less sound will be produced.

You could try a simple test, though.

Try to transfer some large amount of data from a USB stick to the internal SSD, and you´ll notice an increase in the fan noise, an an example of one way to do so.
Last edited by Davidb on Fri Jun 24, 2011 2:48 pm, edited 1 time in total.
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D.
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Hal2001
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It's all relative

Post by Hal2001 »

Maybe the fan sound has to be put into perspective too. For example, if I turn off my speakers, or even if I put my speaker volume very low, I'm going to hear my fingers tapping on the keys (my family can even hear it in the next room when I have my headphones on). And, depending on the keyboard, there will be certain amount of thumping of the keys (I usually play 88's). But, when I turn the volume up on my speakers, I'm totally unaware of the key thumping noise. So, the important frame of reference to me is, how distracting is the fan when actually playing vs the keyboard just idling in non-play (which I also do a lot when I just leave it running for hours in the studio).
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maphill
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Post by maphill »

My "perspective": My Oasys fan was loud enough that I turned off the unit when recording vocals in the same room.

I'm hoping the Kronos will be quieter.

-Mark
Korg KRONOS 73, Trinity Pro, Monotron,
Roland FA-06 and Fantom 6, Roland TDK-15
Big Knob, Sonar (Previously, OASYS 76)
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Hal2001
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Post by Hal2001 »

maphill wrote:My "perspective": My Oasys fan was loud enough that I turned off the unit when recording vocals in the same room.

I'm hoping the Kronos will be quieter.

-Mark
Were you actually able to hear the fan of the Oasys on your recording or you were just not taking any changes that it might get picked up?
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Davidb
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Post by Davidb »

maphill wrote:My "perspective": My Oasys fan was loud enough that I turned off the unit when recording vocals in the same room.
Mine too.
Last edited by Davidb on Fri Jun 24, 2011 3:38 pm, edited 1 time in total.
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D.
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maphill
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Post by maphill »

Hal2001 wrote:Were you actually able to hear the fan of the Oasys on your recording or you were just not taking any changes that it might get picked up?
Fair question: Is was just audible in sensitive (quiet) recordings. I would often record acoustic guitar a couple feet from the Oasys.

It was certainly louder than my laptop. It was also loud enough to annoy me to a degree, but I am more sensitive than many people to this. I have put my (treated) computer in the closest and run extensions to my studio desk because this computer (considered quiet by most) was still too loud.

But that's why objective measures are important. People can take that measurement and filter it by the subjective concerns.

Mark
Korg KRONOS 73, Trinity Pro, Monotron,
Roland FA-06 and Fantom 6, Roland TDK-15
Big Knob, Sonar (Previously, OASYS 76)
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Hal2001
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Post by Hal2001 »

maphill wrote:
Hal2001 wrote:It was certainly louder than my laptop. It was also loud enough to annoy me to a degree, but I am more sensitive than many people to this. I have put my (treated) computer in the closest and run extensions to my studio desk because this computer (considered quiet by most) was still too loud. Mark
So, here's me waiting for my Kronos 88 to come in on pre-order since May and passing time makes me start to wonder about my decision. Then I go to guitar center and play the 61 and compare it to the Motif XF and both sound equally great to me with regard to the voices (on balance overall, with some strenghts here or there for either one). But I have been and still am leaning strongly toward staying with my pre-order. But occasionally when the Motif lovers tell me how much they love their Motif, I start to question myself. Can you help me and tell me what are the main things that sway you toward the Kronos even with some of your concerns? Thanks. I guess at this point I need a little encouragement to help me be more patient and continue waiting for my order. Hal
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maphill
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Post by maphill »

Hal2001:

Well, I'll tell you this: My Oasys was incredible in sound quality. Just amazing. The fan noise was worth it. And I expect the Kronos to be quieter: It uses noticeably less power and has an SSD, so there should be less heat and less noise. That is part of the reason I sold my Oasys: ("It's a new one that should run quieter and has new features like the piano"). It's also lighter weight and smaller (though not quite as exotic).

Unless you are particularly sensitive to fan noise, and/or will be recording acoustic guitar, etc. very close to your Kronos, I think you have nothing to worry about. And even if you are, it still may be just fine. One of the early reviewers said they had to put their ear next to the sliders to hear the fan.

I will report how the fan noise compares when I receive my unit.

Finally, I believe there are other discussions on here about the Kronos vs. the Motif that you could research.

Mark

P.S. I've been waiting since at least February...
Korg KRONOS 73, Trinity Pro, Monotron,
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Big Knob, Sonar (Previously, OASYS 76)
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Post by JimH »

I've just gotten my Kronos a couple days ago and have had only limited time with it so far since I'd had to work. The first time I heard the fan I didn't realize what it was for a moment; I thought one of my neighbors was mowing his lawn in the distance. :) But no, you don't need to put your head next to the keyboard to hear it. It's easily audible at playing distance. It's noisier than my K2000 fan which is going on 20 years old. So for that reason I guess I have the expectation it should be quieter. I think in a small room I would not keep Kronos on when recording acoustic stuff. (I keep my computer in a closet to reduce noise.) Though, I don't think it's so noisy that it's distracting when you're playing Kronos since then it's covered up.
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Post by Zeroesque »

Hal2001 wrote:So, here's me waiting for my Kronos 88 to come in on pre-order since May and passing time makes me start to wonder about my decision. Then I go to guitar center and play the 61 and compare it to the Motif XF and both sound equally great to me with regard to the voices (on balance overall, with some strenghts here or there for either one). But I have been and still am leaning strongly toward staying with my pre-order. But occasionally when the Motif lovers tell me how much they love their Motif, I start to question myself. Can you help me and tell me what are the main things that sway you toward the Kronos even with some of your concerns? Thanks. I guess at this point I need a little encouragement to help me be more patient and continue waiting for my order. Hal
Expressive pianos, clonewheels, virtual analogs, VPM and sampling...all with smooth sound transition between them. This is what I've been waiting for in a keyboard. It's finally here, and it's simply the best instrument I've ever owned. YMMV!
Kronos 61, Kronos2-88, Hammond B3, Baldwin SD-10
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Hal2001
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Thanks for the reminders

Post by Hal2001 »

Yes, those are all the features and benefits that got me excited for the Kronos, not to mention the nice large touch screen which I think is more intuitive. I played the piano sounds and was very impressed. I love the combis and pads. In the Guitar Center store I had to put my head close to the unit to hear the fan. It was like a low level PC computer fan but not as low as my iMac computer fan which I can hardly hear at all even with my ear touching the casing. Overall, every purchase is a tradeoff in some way and I agree that it's worth it to get all the great new unique benefits. The smooth transition is an important deal to me as I've run into problems in live play with switching from one patch to another and loosing an important sound that really would have made a great difference sustaining.
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keykent
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Re: Standard needed

Post by keykent »

maphill wrote:Unfortuantely,

We are have different ears and will notice the fan noise depending on our hearing, sensitivities, placement (desk vs. stand), and even room characteristics (carpet vs. wood, size, etc.).

This information would be much more useful if those of us who have a radio shack SPL meter do something like the following:

1. Set the meter to C-weighted, slow.
2. PLace at typical ear position pointed at board, or some other fairly reproducible position, perhaps 3" above the top of middle C, etc.
3. Watch the values in an absolutely silent room. No computers running, no lawn mowers outside, no kids awake in the house, HVAC off, etc.
4. Look at the average readout over 30 seconds or so.

Readings made close to the unit will be less influenced by room character.

(I'll do this when my Kronos arrives...)

Mark
I have a Kronos and I did this. The rat shack meter will only measure down to 50 dB SPL. The Kronos is below this. I pulled out my Gold Line sound analyzer which can measure down to about 40 dB SpL A weighted. A weighting is more appropriate since its curve matches the ear better at that low a sound level. With the mic at about ear level where you would play, I measured 41 dB A weighting. Barely above the units capabilities.
I played the keys (no speakers or phones on) and the sound jumped about 10-14 dB above that. So if you are playing Kronos, the fan noise is a non issue. If you are not and are recording a very quiet part, have a quiet room and the microphone is fairly close to Kronos, you may want to turn it off. I have an Oasys in another room where I often recorded vocals and while you can hear the O in the room, in the context of a recording that is not just a voice recording it was never a problem and inaudible in a mix and I did not bother turning it off.
You can hear the Kronos fan is a quiet room when you are near it, but for me it is not really an issue.
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Post by drchris »

Related topic: Is there an air intake or output grill that shouldn't be blocked? My Kronos 88 will sit on a slideout shelf as the lower tier of my studio desk. There is a support which will sit just behind the Kronos will holes for access to the cables. Is there an air inlet or exhaust on the back that I also need to consider?

Thanks!
Chris
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Davidb
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Re: Standard needed

Post by Davidb »

keykent wrote:
I have a Kronos and I did this. The rat shack meter will only measure down to 50 dB SPL.
... I have an Oasys in another room where I often recorded vocals...
Hi Keykent,

Did you used the rat shack meter with the OASYS as well?
Are the measures close to those you had in the Kronos?

Just curious. ;)
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maphill
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Post by maphill »

What I've heard is there is not a dedicated port but that the natural vents around the knobs and sliders are all that is used.

I'll be curious to understand the airflow situation better.


Mark
Korg KRONOS 73, Trinity Pro, Monotron,
Roland FA-06 and Fantom 6, Roland TDK-15
Big Knob, Sonar (Previously, OASYS 76)
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