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ResMed S9 whistle problem - Solutions?
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Sleepster Offline
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Machine: ResMed AirCurve10 VAuto
Mask Type: Full face mask
Mask Make & Model: F&P Simplus
Humidifier: HumidAir and SlimLine Hose
CPAP Pressure: MaxI 13.6 | MinE 5.2 | PS 4.4
CPAP Software: ResScan SleepyHead

Other Comments: Diagnosed Nov 2011. Conquered aerophagia.

Sex: Male
Location: Houston, Texas

Post: #31
RE: ResMed S9 whistle problem - Solutions?
(03-09-2013 09:58 PM)HILLTOPPER Wrote:  After reading this thread the other day I payed attention .. Seems My res med s makes WAY more whistle when the water chamber is FULL , not much at all when almost empty and only on Exhale. Go figgure?

This could be a hint. Anybody notice a difference in pitch with the level of the water tank?

Sleepster
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INFORMATION ON APNEA BOARD FORUMS OR ON APNEABOARD.COM SHOULD NOT BE CONSIDERED AS MEDICAL ADVICE. ALWAYS SEEK THE ADVICE OF A PHYSICIAN BEFORE SEEKING TREATMENT FOR MEDICAL CONDITIONS, INCLUDING SLEEP APNEA. INFORMATION POSTED ON THE APNEA BOARD WEB SITE AND FORUMS ARE PERSONAL OPINION ONLY AND NOT NECESSARILY A STATEMENT OF FACT.
03-09-2013 10:39 PM
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jgjones1972 Offline

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Posts: 516
Joined: Nov 2012

Machine: ResMed S9 AutoSet
Mask Type: Full face mask
Mask Make & Model: ResMed Quattro FX
Humidifier: ResMed H5i
CPAP Pressure: 18 - 20
CPAP Software: ResScan SleepyHead

Other Comments: CMS50I PulseOx

Sex: Male
Location: Ohio - USA

Post: #32
RE: ResMed S9 whistle problem - Solutions?
(03-09-2013 10:39 PM)Sleepster Wrote:  
(03-09-2013 09:58 PM)HILLTOPPER Wrote:  After reading this thread the other day I payed attention .. Seems My res med s makes WAY more whistle when the water chamber is FULL , not much at all when almost empty and only on Exhale. Go figgure?

This could be a hint. Anybody notice a difference in pitch with the level of the water tank?

After reading this I checked it out:

With any one particular mask the whistling was the worst with the H5i disconnected and the hose connected directly to the S9 or with the H5i connected and the water chamber filled to the max line (or actually just a tiny bit above it, where I normally fill it to). There might have been a little difference between these two, but not enough to tell by just listening.

With any one particular mask the whisling was least noticeable with the H5i connected but empty.


Worst whistling was with nasal pillows and hose connected directly to S9, or nasal pillows and hose connected to H5i with full tank.

Whistling was least noticeable (not noticeable at all to me even when exhaling hard) with full face mask and hose connected to empty H5i.


Whistling was still coming from inside S9 unit and not from the H5i.



All of this seems to suggest (with my extremely limited knowledge on these things) that it is coming from the flow generator and has to do with flow resistance.

It seems to have consistently held that the more room I introduce into the system (i.e. higher volume of air between the flow generator and my lungs), the less whistling I get. The more I tighten the system up - less air space (i.e. less air to compress on exhale) the more whistling I get.


I wish I had a larger diameter hose like a standard hose (NOT SlimLine) or a ClimateLine Max to check. I might just order one (standard full size hose) to find out.

It would be nice if some others would try the full/empty water chamber thing and/or standard/slim hose (if you have 'em).
03-10-2013 08:04 AM
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Shastzi Offline

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Posts: 1,174
Joined: Dec 2012

Machine: ResMed S9 Autoset
Mask Type: Full face mask
Mask Make & Model: FitLife Total face mask
Humidifier: F&P HC150 with Hybernite heated hose.
CPAP Pressure: 15cm-20cm H2O (auto)
CPAP Software: SleepyHead Other Software

Other Comments: CMS50-F wearable Oximeter; Software: SPO2 Assistant

Sex: Undisclosed
Location: Florida, USA.

Post: #33
RE: ResMed S9 whistle problem - Solutions?
I will try adding a 9ft long hose extension on. That might do something. Smile

"With ordinary talent and extraordinary perseverance, all things are attainable." - Thomas Foxwell Buxton

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03-10-2013 08:58 AM
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Sleepster Offline
Wiki Editor
Moderators

Posts: 4,994
Joined: Feb 2012

Machine: ResMed AirCurve10 VAuto
Mask Type: Full face mask
Mask Make & Model: F&P Simplus
Humidifier: HumidAir and SlimLine Hose
CPAP Pressure: MaxI 13.6 | MinE 5.2 | PS 4.4
CPAP Software: ResScan SleepyHead

Other Comments: Diagnosed Nov 2011. Conquered aerophagia.

Sex: Male
Location: Houston, Texas

Post: #34
RE: ResMed S9 whistle problem - Solutions?
This suggests to me that the small chamber consisting of the space between the flow generator and the hose is resonating with the pitch of the whistle. When you increase the volume of that chamber you lower that resonant frequency making the whistling noise less noticeable.

Sleepster
Apnea Board Moderator
www.ApneaBoard.com


INFORMATION ON APNEA BOARD FORUMS OR ON APNEABOARD.COM SHOULD NOT BE CONSIDERED AS MEDICAL ADVICE. ALWAYS SEEK THE ADVICE OF A PHYSICIAN BEFORE SEEKING TREATMENT FOR MEDICAL CONDITIONS, INCLUDING SLEEP APNEA. INFORMATION POSTED ON THE APNEA BOARD WEB SITE AND FORUMS ARE PERSONAL OPINION ONLY AND NOT NECESSARILY A STATEMENT OF FACT.
03-10-2013 12:42 PM
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woody109 Offline

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Posts: 1
Joined: Mar 2013

Machine: Resmed S9
Mask Type: Nasal pillows
Mask Make & Model: Resmed FX
Humidifier: Resmed S9
CPAP Pressure: 7
CPAP Software: Not using software

Other Comments:

Sex: Male
Location:

Post: #35
RE: ResMed S9 whistle problem - Solutions?
(03-07-2013 11:19 PM)zonk Wrote:  Paula
My machine serial number start with 2210

22= country of manufacture: Australia (23 Singapore)
10
= year of manufacture: 2010

I'm researching the RESMED S9 whistle on exhale and this is my first post just to add a "Me Too". I've been using a CPAP for over 5 years, the first being an S8. The S9 Elite whistle is definitely coming from the unit and not the humidifier or the hose or mask. I've tried all the suggestions I've found to eliminate the whistle with no luck.

The whistle occurs with or without the humidifier and is louder with a soft exhale. I have found that I can actually modulate the whistle by varying the exhale.

For data gathering, my serial number starts with 2312.
(This post was last modified: 03-14-2013 11:30 AM by woody109.)
03-14-2013 11:23 AM
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jbernardk Offline

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Machine: resmed s9 autoset
Mask Type: Full face mask
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CPAP Software: Not using software

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Sex: Male
Location:

Post: #36
RE: ResMed S9 whistle problem - Solutions?
I am having this problem too. Usually does not happen at first but when I wake up later it is very noticeable.
03-21-2013 08:54 AM
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cowboy1970 Offline

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Posts: 67
Joined: Jun 2012

Machine: Resmed S9 AutoSet
Mask Type: Nasal pillows
Mask Make & Model: Puritan Bennett Breeze
Humidifier: H5i
CPAP Pressure: around 11 now (2/20/13)
CPAP Software: ResScan

Other Comments: Try not to think about a spider crawling up your nose from inside your tubing as your drift off. lol

Sex: Male
Location: Tacoma, WA

Post: #37
RE: ResMed S9 whistle problem - Solutions?
I also get this. It is very mild and doesn't keep me from falling asleep.

I also notice it only happens on exhale. Not sure if water tank level affects the pitch of the whistle.

I have been having dreams that the little people have put the 'come hither' on me and the cry of the banshee is drawing me to them.

...but again, this could be just residual effects left over from the Ambien. OR I shouldn't eat Tillamook Peanut butter and chocolate ice cream while watching Darby O'Gill and the Little People right before bedtime. ya, you're right, it's that darn Ambien!
03-26-2013 07:03 PM
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Airstream Offline

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Machine: Resmed S9 Autoset
Mask Type: Full face mask
Mask Make & Model: Resmed Mirage Quattro
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CPAP Pressure: 10-20
CPAP Software: SleepyHead

Other Comments: White Noise Aficionado

Sex: Male
Location: Smoky Mountains, East Tennessee

Post: #38
RE: ResMed S9 whistle problem - Solutions?
(03-26-2013 07:03 PM)cowboy1970 Wrote:  I also get this. It is very mild and doesn't keep me from falling asleep.

I also notice it only happens on exhale. Not sure if water tank level affects the pitch of the whistle.

I have been having dreams that the little people have put the 'come hither' on me and the cry of the banshee is drawing me to them.

...but again, this could be just residual effects left over from the Ambien. OR I shouldn't eat Tillamook Peanut butter and chocolate ice cream while watching Darby O'Gill and the Little People right before bedtime. ya, you're right, it's that darn Ambien!

Cowboy, a little off the subject, but what model mask is depicted in your avatar? I think I had one like that (bad memories), or maybe it's just that it looks like the sore on the bridge of my nose. Hope it (your avatar) doesn't scare away any new CPAP users. Jeff.

To err is human, but to really mess things up, you need a computer.
04-02-2013 07:09 PM
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SuperSleeper Offline

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Machine: PR System One REMstar Auto (DS560)
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Post: #39
RE: ResMed S9 whistle problem - Solutions?
It's the new Klingon CPAP Mask. Eat-popcorn

SuperSleeper
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INFORMATION ON APNEA BOARD FORUMS OR ON APNEABOARD.COM SHOULD NOT BE CONSIDERED AS MEDICAL ADVICE. ALWAYS SEEK THE ADVICE OF A PHYSICIAN BEFORE SEEKING TREATMENT FOR MEDICAL CONDITIONS, INCLUDING SLEEP APNEA. INFORMATION POSTED ON THE APNEA BOARD WEB SITE AND FORUMS ARE PERSONAL OPINION ONLY AND NOT NECESSARILY A STATEMENT OF FACT.

04-02-2013 08:01 PM
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Shastzi Offline

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Posts: 1,174
Joined: Dec 2012

Machine: ResMed S9 Autoset
Mask Type: Full face mask
Mask Make & Model: FitLife Total face mask
Humidifier: F&P HC150 with Hybernite heated hose.
CPAP Pressure: 15cm-20cm H2O (auto)
CPAP Software: SleepyHead Other Software

Other Comments: CMS50-F wearable Oximeter; Software: SPO2 Assistant

Sex: Undisclosed
Location: Florida, USA.

Post: #40
RE: ResMed S9 whistle problem - Solutions?
Ah, I see. I thought it was the new Face Hugger Alien model. Big Grin

"With ordinary talent and extraordinary perseverance, all things are attainable." - Thomas Foxwell Buxton

Cool
04-03-2013 08:47 AM
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