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Stevesb62's picture
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Joined: 05/04/2010 - 18:48
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RE: Arcam rPac troubles

Finally, I found a fix thats worked. And it's thanks to someone on this site. Sorry, I've forgotten who you were or where your original post on this but if you're reading this, thanks

The powered USB theory is incorrect. On the rPac DAC is a Green light when it's getting a signal. This turns red when there is no signal. So, you're watching a Youtube clip, the light is green, then the clip ends and the light goes red, then about 3 seconds later, you get the cut out sound and the DAC is dead. So when there is no signal, the Dac surely has to be receiving enough power, no problem, it's not using any power so the lack of power can't be the case. I suspect, some powered USB hubs are still sending some sort of trickle signal to the DAC keeping the signal alive. But I'm no expert so I could be wrong.

So, (and again thanks to a previous poster on here) I found this works http://soundflower.en.softonic.com/. When you're using this, the red light never comes on, when the Youtube clip ends, the green light stays on and the rPac stays alive, no cut out. I'm not sure of it's intended use but whatever it is, it does the trick. I've got mine set to 2 channel use (16 channel turned off) and max buffer size. And thats it, it all works AND I've got the rPac plugged into the Mac, not a USB Hub. 

If I sound a little overexcited over such a small thing it's because it's been going on since Christmas when i bought the thing and have never really had it working properly since I got it.

Maybe Arcam themselves should take note of this and produce an App that goes with the rPac to solve the problem once and for all. 

So thats it, go and get Soundflower...http://soundflower.en.softonic.com/

 

 

 

 

 

Overdose's picture
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RE: Arcam rPac troubles

Glad you got it sorted, although if it's an issue that needs a work around or additional app, Arcam should still make people aware that this is the case.

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RE: Arcam rPac troubles

Hi all,

just to add the 'real' solution...  Wink

when you plug the rPAC into your USB port, hold down the two volume buttons (the + & -) on the top of rPAC (or when plugging the cable into the back of rPAC if already connected to Mac) and the light will turn Orange. This indicates that it is now in USB 2 mode. You can then press either volume button and light will go red and it will operate as normal, but no issues of cutting out, funny glitch noises or anything else!!!

Hope this helps you all.

Overdose's picture
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RE: Arcam rPac troubles

palmman50k wrote:

Hi all,

just to add the 'real' solution...  Wink

when you plug the rPAC into your USB port, hold down the two volume buttons (the + & -) on the top of rPAC (or when plugging the cable into the back of rPAC if already connected to Mac) and the light will turn Orange. This indicates that it is now in USB 2 mode. You can then press either volume button and light will go red and it will operate as normal, but no issues of cutting out, funny glitch noises or anything else!!!

Hope this helps you all.

and is that not in the instruction manual?

palmman50k's picture
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RE: Arcam rPac troubles RE: Arcam rPac troubles

Overdose wrote:

and is that not in the instruction manual?

No!

This is a special, undocumented, mode/setting...

RoyD's picture
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RE: Arcam rPac troubles

..........and the pressing the +/- buttons simultaneously trick doesn't seem to work all the time either ~ certainly not for me anyway.

 

 

palmman50k's picture
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RE: Arcam rPac troubles

you must make sure they are held down before plugging in USB cable & during plugging in, then u can press either button to resume normal operation

RoyD's picture
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RE: Arcam rPac troubles

Thanks for that Palmman; but just to be sure i have this correct. I normally leave the rPac plugged in via the USB all the time. Do I therefore need to unplug it via the USB and then go through this routine? If so, that is a little awkward for a device which i think should be 'plug n' play'. I have tried the technique described above and it doesn't prevent the problem re-occurring. 

I have since since received something from Arcam ~ however, this relates to a fix or upgrade regarding issues with Windows despite me telling them I use the device with an iMac so i'm not sure what use it is .

 

Following the question "Is that not in the instruction manual' I took the (slightly barbed) hint.....and guess what, it isn't. However, there is a warning about the device needing power or precedence over other attached devices so I checked  the USB utility on the mac and it seems the device is plugged into a hi-speed USB port with nothing else sharing it?

 

To the poster above who recommended the Epiphany acoustics E-dac , I will be ordering one as soon as I can; i already have the O2 portable headphone amp and it is really excellent.

 

Smacks to me to be a little bit of 'shed engineering'.  I would happily sell this device  on but would feel I would need to warn anyone considering buying it that it doesn't work with a MAC. I'll also check with the hifi dealership I bought it from as to whether they have had many similar experiences reported with mac users. I appreciate it may sound a little whiny and £150 isn't a huge amount of money but it is irritating that it doesn't work as described.

RD

 

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RE: Arcam rPac troubles

Hi all,

When there are a number of customers all complaining about a product then there is surely something wrong with the rPac.  i cant enjoy any listening without the rpac being been cut off .. I have tried to comtact the company but no replies..its frustrating beyond measure ..

 

the point is: despite some solution that some people has offered here on this forum..this product was meant to be plug and play ..so clearly should have never be  a need for any tweaking or even for  this forum to be existed at first place..i think rPac problem should be included in the review to forewarn future buyers..

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This worked for me!!!

Hi all

I've just purchased a rPac to improve my already brilliant Ruark MR1s feeding from my mid 2010 iMac.

Guess what, had the problem of the static click, then no sound when swapping apps on the Mac, namely internet radio and then iTunes.

So after much pushing of buttons on the rPac and checking Mac settings with no cure I was ready to take it back to Richer Sounds and dump my loyalty to Arcam in the bin.

However, one last try and I did notice that in the Sound preferences the Arcam was titled "ARCAM USB 1.0 Audio Out". Surely this should be USB 2.0 I thought. So, reading what someone had mentioned above and somewhere else, suggesting to unplug USB of rPac, then holding both + and - together while plugging it back in. Reopened the Sound preferences and Hey Presto! it has changed to "ARCAM USB 2.0 Audio Out" and no static click or loss of sound. Hoo-bl**dy-ray.

Note: rPac is plugged directly into back of mac not a hub.

So if you have come across this forum on your search for a solution then try this. Hope it will help someone.

Arcam hold your head in shame for not putting this in the instructions and hope you have improved your customer support as in an ever more technical hifi world some of us need help with these sorts of products.

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USB Audio Class 2 mode

I recently got one of these at a reduced price, and fortunately have not run into any of these problems (on Windows 7).  It's a very nice upgrade compared to the Realtek integrated audio.  Even on less than ideal Logitech 2.1 speakers, I can really hear the difference.

The first thing I did was update the firmware to version 1.05 - which is said to improve compatibility with some USB chipsets. Unfortunately there is no documented Mac firmware upgrade procedure, but it can be done on Windows.  

The manual is not very good at all, very minimal.  It's also disheartening to read the lack of response by Arcam to customers - not what I'd expect. As already said above, the manual doesn't even mention USB mode selection.  It's interesting that another undocumented feature of running in USB 2 mode (accessed by pressing + and - buttons while plugging in the DAC) is that it supports sample rates up to 192 khz in this mode - the product specifications all show 96 khz as the maximum rate.  

Note that on Windows, class 2 mode requires a driver from Arcam's website. It won't be recognised without it.  OSX has native support. The Windows driver enables ASIO support in suitable applications (e.g. Foobar2000 media player) for the highest quality, most direct output.  I have found the ASIO driver a bit problematic on Windows 10, but works fine on 7.  It likely needs to be updated, as the driver version Arcam have on their site is dated 2013.

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