cpa872
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The tiny "hizz" sound from MOTU 828 MKII
I got the 828 MKII last week.
dave_music brought up the little "hizz" sound from his mackie
monitor, and I am wondering is the tiny "hizz" sound from MOTU
828 MKII after it's turned on also a normal sound?
Please help.
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Rousseau
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RE: The tiny "hizz" sound from MOTU 828 MKII
2004/06/11 01:23:00
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Hizz sound ? Are you talking about a hiss coming out of the audio output ? Or a sound coming out from the physical machine (like a fan or something) ?
FWIW I've never heard any serious hiss or other problems from mine.
Steve
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cpa872
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RE: The tiny "hizz" sound from MOTU 828 MKII
2004/06/11 03:05:55
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ORIGINAL: Rousseau
Hizz sound ? Are you talking about a hiss coming out of the audio output ? Or a sound coming out from the physical machine (like a fan or something) ?
Steve
Hi Steve, The sound is the "zz" sound when I turn on the MOTU. It sounds like the electricity is "flowing" in the MOTU...  Do you get any (even tiny) sounds from MOTU after you turn it on?
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dave_music
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RE: The tiny "hizz" sound from MOTU 828 MKII
2004/06/11 03:18:16
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I did not notice any ZZ sound from Motu. It is very quiet. The hiss sound is from Mackie monitors themselves.
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cpa872
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RE: The tiny "hizz" sound from MOTU 828 MKII
2004/06/11 03:47:50
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ORIGINAL: dave_music
I did not notice any ZZ sound from Motu. It is very quiet. The hiss sound is from Mackie monitors themselves.
Then maybe it means I need to talk to MOTU's costumer service...  Well, my "z" sound is not a lot noise either. Just like I mentioned, it's kind of like the "electricity flows through the MOTU" feeling....  It's still very quiet tho.. Just wanna make sure everything is good of my new baby. Maybe you can try to listen to your MOTU (really close) in a very quiet room to see if it makes a tiny-little "z" thing when it's on. Thanks! 
< Message edited by cpa872 -- 6/11/2004 3:49:20 AM >
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michael japan
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RE: The tiny "hizz" sound from MOTU 828 MKII
2004/06/11 04:27:47
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mine has a big click like pop when I turn it on. Is that grounding?
Windows 10/64 bit/i7-6560U/SSD/16GB RAM/Cakelab/Sonar Platinum/Pro Tools/Studio 1/Studio 192/DP88/MOTU AVB/Grace M101/AKG Various/Blue Woodpecker/SM81x2/Yamaha C1L Grand Piano/CLP545/MOX88/MOTIF XS Rack Rack/MX61/Korg CX3/Karma/Scarbee EP88s/ Ivory/Ravenscroft Piano/JBL4410/NS10m/Auratones/Omnisphere/Play Composers Selection/Waves/Komplete Kontrol
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cpa872
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RE: The tiny "hizz" sound from MOTU 828 MKII
2004/06/11 05:28:30
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ORIGINAL: Rousseau
Hizz sound ? Are you talking about a hiss coming out of the audio output ? Or a sound coming out from the physical machine (like a fan or something) ?
I didn't answer this clearly last time... Yes, it's from the physical machine ....and yes, it feels like a fan for computers or something, it constantly "z" (tiny) during the machine is on. Is this normal??
< Message edited by cpa872 -- 6/11/2004 5:29:34 AM >
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cpa872
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RE: The tiny "hizz" sound from MOTU 828 MKII
2004/06/11 05:30:52
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ORIGINAL: michael japan
mine has a big click like pop when I turn it on. Is that grounding?
I listen the MOTU via my AKG headphone-no big click, no pop. Does yours have the tiny "z" from the physical machine during the machine is turned on?
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ooblecaboodle
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RE: The tiny "hizz" sound from MOTU 828 MKII
2004/06/11 05:40:04
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do you mean a sort of high frequency humming noise, like when you can tell that a TV has been turned on in another room, or that annoying noise that cheap hifis make even when powered down (when they're determined to keep you awake all night!)?
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cpa872
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RE: The tiny "hizz" sound from MOTU 828 MKII
2004/06/11 05:44:32
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ORIGINAL: ooblecaboodle
do you mean a sort of high frequency humming noise, like when you can tell that a TV has been turned on in another room, or that annoying noise that cheap hifis make even when powered down (when they're determined to keep you awake all night!)?
I think it's more like the humming noise, "like when you can tell that a TV has been turned on in another room" (I love this!! ) But it's not that "high-frequency" for me.....IMO
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Jake68
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RE: The tiny "hizz" sound from MOTU 828 MKII
2004/06/11 06:07:38
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I cant remember whether or not the 828 has got a mains PSU or whether they have an external PSU. If its got an internal mains PSU I would bet the noise you are hearing is the rectification of mains voltage or the supply of power if you like. It is the product of turning an oscillating volatege (UK50Hz 240v US 110v 60Hz) into a lower supply voltage and then turning it from AC to DC. Its very possible you have a fault. Personally I would get this checked out with the dealer against a new one. The PSU would have a bridge rectifier that the bit making the noise possibley, and that going, could allow AC to flow into the 828 low voltage, but AC never the less, it may not be a problem but do youself a favour and get it checked out.
If it has an external PSU then check it for a symbol that says its DC. It could be AC, in this case the unit would still have rectification inside it to go wrong.
This happened to me with a Layla 20, and it started going thump thump when I turned it on! Eventually I had to replace a birdge rectifier inside the breakout box and all was well. BUT I stopped using it before it blew up.
Good Luck.
PS....Dont mean to concern you, just give you the information I have!
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cpa872
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RE: The tiny "hizz" sound from MOTU 828 MKII
2004/06/11 07:16:35
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Jake, Thanks for your suggestions. I will talk to the MOTU tech support ASAP. So....no one else has the same humming sound as I have?
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SteveJL
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RE: The tiny "hizz" sound from MOTU 828 MKII
2004/06/11 07:37:09
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Nothing here, either. Low-level (60hz?) buzz-type sound if I put my ear close to the case, but nothing that would qualify as a hizz-type sound. Nothing coming through my powered monitors either. ORIGINAL: cpa872
Hi Steve,
The sound is the "zz" sound when I turn on the MOTU.
It sounds like the electricity is "flowing" in the MOTU...
Do you get any (even tiny) sounds from MOTU after you turn it on?
I do get this, though and believe it is normal (mic preamps most likely). You may want to make sure it is not your connections - unplug everything and see if you still hear it. cpa: it is still not clear from your posts if you are talking about hearing something through your speakers, although: it is clear that the electrical sound you are hearing is from the physical box, hopefully low (like mine) so as not to be audible from a few feet away. ORIGINAL: michael japan
mine has a big click like pop when I turn it on. Is that grounding?
Michael, mine sends a loud bump-type sound out the monitors at a level which I am not comfortable with, so I always power my monitors AFTER the MOTU.
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cpa872
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RE: The tiny "hizz" sound from MOTU 828 MKII
2004/06/11 09:50:56
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AH~~~ I think my ability of describing things is bad, bad, bad~~~ Steve: I think mine "z" sounds more like how you described: a buzzing sound (not high frequency). I still can hear it buzz in the distance of 2-3 feet, but it's not very clear when I stand further than 6-7 feet away from my MOTU. (Well, I should say I have good ears and is well-trained in the academic-music-school system.) Actually, your words make me feel A LOT better! At least I am not the only one who hear that buzz. Since I heard that buzz-type sound from the first second I turn on the MOTU, I was wondering if this is "sort of" normal for the 828 or not. BTW, the buzz-type sound seems not relate to the connections. I heard the sound everytime when I turn on the MOTU, whether it's connected to something or just by itself. And, the sound is from the physical machine, not thru the headphone or monitors (I don't even have a pair of monitors yet... ) ORIGINAL: SteveJL
Nothing here, either. Low-level (60hz?) buzz-type sound if I put my ear close to the case, but nothing that would qualify as a hizz-type sound. Nothing coming through my powered monitors either.
ORIGINAL: cpa872
Hi Steve,
The sound is the "zz" sound when I turn on the MOTU.
It sounds like the electricity is "flowing" in the MOTU...
Do you get any (even tiny) sounds from MOTU after you turn it on?
I do get this, though and believe it is normal (mic preamps most likely).
You may want to make sure it is not your connections - unplug everything and see if you still hear it.
cpa: it is still not clear from your posts if you are talking about hearing something through your speakers, although:
it is clear that the electrical sound you are hearing is from the physical box, hopefully low (like mine) so as not to be audible from a few feet away.
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RRabbi
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RE: The tiny "hizz" sound from MOTU 828 MKII
2004/06/11 10:13:27
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WOW.... so just from turning the actual MOTU on, without using any speakers or headphones you hear the buzz? that can't be good... mine certainly doesn't do that... Maybe try plugging it into a different power outlet, or if it's in a power bar try plugging it into it's own outlet by itself. I wonder if this is a power issue...
Dave
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SteveJL
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RE: The tiny "hizz" sound from MOTU 828 MKII
2004/06/11 10:19:31
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I think you probably want to either, contact MOTU support OR go to your local MOTU Dealer, have them plug one in and see how it sounds in comparison. Personally, I'm not alarmed by mine as it is really so low as to not be a concern to me (I kinda have to put my ear against the case to hear it). _________________________________________________________________ ORIGINAL: RRabbi
WOW.... so just from turning the actual MOTU on, without using any speakers or headphones you hear the buzz? that can't be good... mine certainly doesn't do that... Maybe try plugging it into a different power outlet, or if it's in a power bar try plugging it into it's own outlet by itself. I wonder if this is a power issue...
Dave
Dave, do you hear anything when you put your ear to the case when it is on? (in a quiet room).
< Message edited by SteveJL -- 6/11/2004 10:22:14 AM >
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cpa872
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RE: The tiny "hizz" sound from MOTU 828 MKII
2004/06/11 10:26:06
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Err~~~ Then I think I need to call them this morning.
< Message edited by cpa872 -- 6/11/2004 10:27:04 AM >
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cpa872
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RE: The tiny "hizz" sound from MOTU 828 MKII
2004/06/11 10:28:57
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Thanks Dave. I will do the "plugging" tests ASAP. ORIGINAL: RRabbi
WOW.... so just from turning the actual MOTU on, without using any speakers or headphones you hear the buzz? that can't be good... mine certainly doesn't do that... Maybe try plugging it into a different power outlet, or if it's in a power bar try plugging it into it's own outlet by itself. I wonder if this is a power issue...
Dave
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RRabbi
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RE: The tiny "hizz" sound from MOTU 828 MKII
2004/06/11 11:11:55
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i'll try putting my ear against it and see...
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cpa872
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RE: The tiny "hizz" sound from MOTU 828 MKII
2004/06/11 13:58:39
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ORIGINAL: RRabbi
i'll try putting my ear against it and see...
So, Dave, what did you get after you do this?? 
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cpa872
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RE: The tiny "hizz" sound from MOTU 828 MKII
2004/06/11 14:12:31
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I called the MOTU service (the guy's name is Josh) and we went thru the "outlet changing test". I tested 4 wall outlets in my apartment, still there was the buzz even without anything plugging into the MOTU. The buzz is low and tiny, but according to you guys' words that it shouldn't have that buzzing sound if I only turn out the machine itself, I took this problem seriously. I even tried another power cable, well, again, the buzz was still there. The Motu guy took my name and told me to do some more tests: like change to another apartment and try the outlets there.... He also told me if the buzzing thing doesn't change at more, I can fax my reciept and the serial number to him and I will get a replacemnet. I asked for the free-pick-up from them but he said I will need to pay the shipping fee for ship back the item to them. That's the whole story so far. I will do more tests. ORIGINAL: RRabbi
WOW.... so just from turning the actual MOTU on, without using any speakers or headphones you hear the buzz? that can't be good... mine certainly doesn't do that... Maybe try plugging it into a different power outlet, or if it's in a power bar try plugging it into it's own outlet by itself. I wonder if this is a power issue...
Dave
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SteveJL
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RE: The tiny "hizz" sound from MOTU 828 MKII
2004/06/11 14:33:01
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Go to your local MOTU Dealer, have them plug one in and see how it sounds in comparison. Take yours too.
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Jake68
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RE: The tiny "hizz" sound from MOTU 828 MKII
2004/06/11 14:43:42
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Thats the way to do it. Im sure what your hearing is a PSU component dying. Get it checked out.
HOWEVER...I should say that Korg Tri series gear does make a similar noise. But if no other MOTU owners are hearing it, get it checked out!
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RRabbi
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RE: The tiny "hizz" sound from MOTU 828 MKII
2004/06/11 16:24:17
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sorry dude... i'm at work, and they won't let me do recording here... heh... I'll try later tonite...
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cpa872
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RE: The tiny "hizz" sound from MOTU 828 MKII
2004/06/12 02:21:36
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so...no one trying to hear it??
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SteveJL
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RE: The tiny "hizz" sound from MOTU 828 MKII
2004/06/28 13:02:40
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Did anyone reach any conclusions on this?
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keith
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RE: The tiny "hizz" sound from MOTU 828 MKII
2004/06/28 13:33:30
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Couple of thoughts:
1.) if your apartment building is old the wiring may not provide a proper ground
2.) if your apartment building is old, the electrical itself may be a.) overloaded and b.) noisy from microwaves, air conditioners, fan motors, etc. in other apartments or in the basement
3.) you have a ground problem in your computer itself -- perhaps a cheap or dying PSU?
4.) you have a CRT that is positioned closely to your machine and you're capturing EMI/RFI in the machine, in the MOTU, in connecting cables, whatever
Definately take your MOTU to a different building -- preferably the dealer -- and try to connect to a different computer, as you'll be able to rule out a whole bunch of environmental issues.
- Keith
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cpa872
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RE: The tiny "hizz" sound from MOTU 828 MKII
2004/06/28 19:38:40
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Ok! Here are the follow up! I ended up exchanged a new MOTU from the dealer (Full Compass, their services are really good!). And now everything seems fine. The MOTU is quiet, can only hear the tiny-tiny "z" if I "attach" my ear on the MOTU. Keith: I agree with you that maybe my apartment is kind of old so it would affect the MOTU a little. But I don't think (or maybe, no idea about) the PSU is dying or not because I connect the MOTU to my new T41 Thinkpad. And it's with the LCD screen not the CRT.
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SteveJL
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RE: The tiny "hizz" sound from MOTU 828 MKII
2004/06/28 19:49:08
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ORIGINAL: cpa872
Ok! Here are the follow up!
And now everything seems fine.
The MOTU is quiet, can only hear the tiny-tiny "z" if I "attach" my ear on the MOTU.
OK good, glad to hear it! That sounds about the same as mine. Way to go.
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Rousseau
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RE: The tiny "hizz" sound from MOTU 828 MKII
2004/06/30 08:43:29
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OK glad you got it sorted.
FYI I get a nasty click sound if I turn on the PC when the MOTU is already running. Guess its something with the drivers. Just happens once when the PC starts up though.
Steve
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