New Remstar M series machine

halbert · Post by **halbert** » Thu Aug 10, 2006 9:19 pm

I just got a new M series machine. It really seems noisey... Is it supposed to be louder than my old Remstar plus?

Snoredog · Post by **Snoredog** » Thu Aug 10, 2006 9:38 pm

it all depends on your delivery pressure. The higher the pressure, the higher the noise will be. Was there an increase/change in pressure?

halbert · Post by **halbert** » Thu Aug 10, 2006 9:45 pm

The pressure is set at 10 on both machines. The noise is coming from the air intake. It is hard to go to sleep with the sound of rushing air. The old Remstar is much quieter.

Snoredog · Post by **Snoredog** » Thu Aug 10, 2006 9:59 pm

Should it be? I suspected it would be... the M series is brand new so alot of us don't yet have it.

I'm sure they try and make them as quiet as they possibly can but the M series is smaller than the Plus, that means less room inside to install additional sound deadening foam. The specs just say <30db, same for the old model like your Plus. I tried checking them once with my Radio Shack digital sound meter, it doesn't measure anything less than <50db, so it wasn't much good.

If you take the Plus machine apart you'll see it (don't recommend doing that), all the air ducts going from the motor should be lined with the special sound aborbing foam. It is only about 1/8" thick on the Pro, not sure on the Plus, but it should be the same.

The new M series Plus should have Cflex, that can change the noise because it will go up/down as you breathe. Some of the early Plus models didn't have Cflex so they appeared quiet by comparison.

From the intake? On your old Plus they made that cap that went over the intake, they called it a "sound reducer" (had large cell black foam in it, with fine white filter below it). Your new M series doesn't have it? I'd contact where you purchased it and see if they don't make one for the M.

Goofproof · Post by **Goofproof** » Thu Aug 10, 2006 10:06 pm

But look at the upside, it more portable and takes up less space, space that could have been filled with noise blocking material. But, no, that would have add weight too.

For every action, there is a equal and opposite reaction, I don't know where I heard that, Probably Spock.

In all it's probably not much louder, than the old one, maybe it's just a different pitch. No two items are alike. Jim

halbert · Post by **halbert** » Thu Aug 10, 2006 10:14 pm

I am going to see my retailer in the morning. I think I'll try to get a new Remstar Plus. Thanks... The machine is supposed to help me get a good night sleep not keep me from sleeping.

Goofproof · Post by **Goofproof** » Thu Aug 10, 2006 10:38 pm

Go for one that can give data, at least a Pro 2. Jim

byront · Post by **byront** » Fri Aug 11, 2006 12:02 am

I have the Series:M Auto. I have never had anything else so I have nothing to compare to. What I notice mostly is the variation in sound caused by the c-flex, in otherwords the speeding up and slowing down of the motor causing not only a change of pitch but also changes in volume (from almost silent to a soft blowing sound). I believe it would almost be easier to handle if the c-flex was off, then the sound would be more constant, like white noise, instead of that variable up and down sound of my breathing - but I love the c-flex. I tend to focus on that up/down breathing sound it creates, and it does make it harder for me to fall asleep. My 90% pressure is running between 11.5 and 12. My apap is set at 9 - 13.5. So if I just hit the power button when I'm trying to go to sleep it's generally running at 10 and kicking down to a #2 c-flex setting, which is quite a variation in motor speed and easily focused on. Do you use your ramp button? You seem like a seasoned user so I assume you probably do. For me the ramp button was the solution. I went into setup and set the ramp down to 5 over a 20 minute period, I don't even notice the sound at 5 cmH2O and 20 mins. usually gives me plenty of time to fall asleep - if not I just hit the ramp again. Once I'm asleep I don't even hear the machine. If you haven't tried this it's worth a shot. I really like my M, but I bet if I had the other I would feel the same about it. Just my two. --- BT

greyhound · Post by **greyhound** » Fri Aug 11, 2006 6:17 am

I've got no noise problems at all with my M Series Auto (90% @3), even when using c-flex. In fact, my wife has commented on how much quieter it is compared to my previous PB 420G

roadwarrior · Post by **roadwarrior** » Fri Aug 11, 2006 10:53 am

the M isn't inherently a noisy machine to be sure. About the ONLY thing I can think of that may well contribute to increased noise (at higher pressures) is the fact that for example the air inlet of the REMstar Auto/Pro is about 3x the size of the M's opening. It would make some sense that at higher pressures that air getting pulled into a smaller space would make a bit more noise. I really think it's a bit of splitting hairs as I had a M+ prior to my REMstar Auto and with earplugs in I don't really notice much of any difference

Guest · Post by **Guest** » Fri Aug 11, 2006 7:14 pm

what are you talking about??? "noise"
just go to sleep!

Put on some classical music and shut up....

cchase · Post by **cchase** » Fri Aug 11, 2006 9:52 pm

Hi halbert-

My experience is similar to byront. When I first start treatment at night, my respirations are long and deep and the machine's blower adjustment with c-flex creates a louder response. When I wake up in the morning, my breathing is more regular and shallow and the machine is whisper quiet in response. I've also noticed a difference with masks. When I use a CL2 with pillows, I have no difficulty getting sufficient airflow and my breathing relaxes quickly. With a nasal mask, my airflow isn't as strong and so I tend to draw a deeper breath, producing a louder response from blower in the machine.

Hope you find my experiences of use.

Chris

Justin Case · Post by **Justin Case** » Sat Aug 12, 2006 1:14 pm

roadwarrior wrote:the M isn't inherently a noisy machine to be sure. About the ONLY thing I can think of that may well contribute to increased noise (at higher pressures) is the fact that for example the air inlet of the REMstar Auto/Pro is about 3x the size of the M's opening. It would make some sense that at higher pressures that air getting pulled into a smaller space would make a bit more noise. I really think it's a bit of splitting hairs as I had a M+ prior to my REMstar Auto and with earplugs in I don't really notice much of any difference

It's not noisey? Maybe to the folks of you who can probably sleep through an thunderstorm . My DME hates the machine just because of that. He lets his customer try it out the machine, but so far, he doesn't have any takers because people complain it's so noisy. In fact, I was looking at thte machine myself and other people's complaints online and my experience substantiates that it' noisy. I think it's only for sound, not light sleepers.

Guest · Post by **Guest** » Sat Aug 12, 2006 11:36 pm

Justin Case wrote:
roadwarrior wrote:the M isn't inherently a noisy machine to be sure. About the ONLY thing I can think of that may well contribute to increased noise (at higher pressures) is the fact that for example the air inlet of the REMstar Auto/Pro is about 3x the size of the M's opening. It would make some sense that at higher pressures that air getting pulled into a smaller space would make a bit more noise. I really think it's a bit of splitting hairs as I had a M+ prior to my REMstar Auto and with earplugs in I don't really notice much of any difference
It's not noisey? Maybe to the folks of you who can probably sleep through an thunderstorm . My DME hates the machine just because of that. He lets his customer try it out the machine, but so far, he doesn't have any takers because people complain it's so noisy. In fact, I was looking at thte machine myself and other people's complaints online and my experience substantiates that it' noisy. I think it's only for sound, not light sleepers.

GoofyUT · Post by **GoofyUT** » Sun Aug 13, 2006 2:16 am

Stuff like this makes me wonder about Respironics OR ResMed shills.

New Remstar M series machine

New Remstar M series machine

Huh?