Discuss Eris E4.5, E5, E8, E44 and E66 here
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Hello all:

I have an issue that is driving me batty. I've owned quite a few active studio monitors and bookshelf speakers, including models from Edifier, Swans, JBL, Dayton Audio, Kanto, and now Presonus.

In each case, I've had speaker models that were very quiet, or in worst case scenarios, there may have been a faint hiss coming from the tweeters (at a lower level) when nothing was playing, and then only when you bring your hear close to the speaker(s).

However, with the pair of E5 XT's that I just purchased several weeks ago, the level of hiss, hum, and buzzing is enough for anyone to take notice - even just sitting back where I normally listen to them at, which is 3-4 feet away. I have my Eris speakers set up as a desktop scenario by my desktop PC, situated on either side of my 27" monitor. Initially, when I first heard the noises coming from the speakers, I experimented with a variety of placement options, to include plugging them into different outlets - but all to no avail.

Then I read on various forums (suggestions actually) that it may be best if I purchased an AC line conditioner and just plug the speakers into that. Well, I purchased a nice Furman line conditioner, plugged the speakers into that - and nothing had changed. Then I even purchased a plug-in iFI AC line cleaner that I inserted right by the wall outlet - still no change. This makes me believe that this issue may be one that is prevalent with Presonus speakers (please somebody correct me if I'm wrong here).

I have an iFi ZenDAC running my E5 XT's, with higher end audiophile cables. I have Audioquest upgraded USB cables running to my PC. I've even replaced the AC cords running from both Presonus speakers with better Audioquest 10 gauge models - still all to no avail. The constant low level hum, hiss, and in particular, a buzz sound is enough to take notice when you are not listening to music. It should also be noted that I am "not" using any balanced audio gear, so my connections between the DAC and the speakers are with audiophile grade RCA cables.

Does anybody have any suggestions? I believe I've tried just about everything - and purchasing the line conditioners (with no improvement at all) were eye openers to say the least. As I mentioned, this makes me think it's the speakers themselves.

Thanks in advance for any tips or comments you may have...

Ben
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by SwitchBack on Mon Dec 07, 2020 5:16 pm
Hi and welcome to these forums :)

One thing I can think of is to turn up the DAC's output level and to turn down the input gain on the monitors. That will reduce the effects of cable noise.

If that doesn't help then try (passive) DI's with ground lift between the DAC and the monitors. That will break ground loops and isolate the DAC's ground plane from the monitor's (should the power supplies and mains filters cause those planes to drift).

See if it helps :)
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by berndherrmann1 on Mon Dec 07, 2020 9:02 pm
Remember, I am using RCA cables (not balanced XLR or TRS cables). Because of this - and in looking over various passive DI's - I don't see any of those DI's sporting RCA cable inputs/outputs.

Thanks,

Ben
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by SwitchBack on Mon Dec 07, 2020 11:28 pm
Here's one from Radial. Google "DI-box RCA" and you'll find more.
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by berndherrmann1 on Tue Dec 08, 2020 7:21 am
Interesting - first off, I spend $400 for an AC line conditioner (for $300 a pair of active speakers) that didn't do the trick noise-wise. Now, another $170 USD - again for a $300 pair of speakers. This should not have to be the case with the Presonus line of speakers.

As I mentioned in my OP, no other speaker brand has given me this issue with hum and buzzing (using RCA cables) as the Presonus has done. To have to spend all of this money just to "try" to get the noise abated, almost seems like a futile effort. It's almost to the point where although I thoroughly enjoy the audio output from my E5 XT's, the additional outlay of funds to fix scenarios absent from other brands, makes the original purchase of these Presonus speakers seemingly not worth the effort. I may have to consider just selling these Eris E5 XT's and go back to using one of the other brands mentioned in my OP, which is unfortunate really.

I've read in other forums and product reviews of various Presonus speakers, that this is an ongoing issue and it shouldn't be.

Thanks for all your help and suggestions...now I have some thinking to do.

Ben
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by Bbd on Tue Dec 08, 2020 7:39 am
You really should be using balanced input/outputs to connect your speakers to your audio device.

Bbd

Please add your specs to your SIGNATURE.
Search the STUDIO ONE 5 ONLINE MANUAL. Access your MY.PRESONUS account.
OVERVIEW of how to get your issue fixed or the steps to create a SUPPORT TICKET.
Needs to include: 1) One Sentence Description 2) Expected Results 3) Actual Results 4) Steps to Reproduce.


OS: Win 10 x64 Home, Studio One Pro 5.x, Notion 6, Series III 24, Studio 192, Haswell CPU: i7 4790k @ 4.4GHz, RAM: 16GB, Faderport 8/16, Central Station +, PreSonus Sceptre S6, Eris 3.5, Temblor 10, ATOM, ATOM SQ
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by SwitchBack on Tue Dec 08, 2020 11:58 am
berndherrmann1 wroteInteresting - first off, I spend $400 for an AC line conditioner (for $300 a pair of active speakers) that didn't do the trick noise-wise. Now, another $170 USD - again for a $300 pair of speakers. This should not have to be the case with the Presonus line of speakers.

As I mentioned in my OP, no other speaker brand has given me this issue with hum and buzzing (using RCA cables) as the Presonus has done. To have to spend all of this money just to "try" to get the noise abated, almost seems like a futile effort. It's almost to the point where although I thoroughly enjoy the audio output from my E5 XT's, the additional outlay of funds to fix scenarios absent from other brands, makes the original purchase of these Presonus speakers seemingly not worth the effort. I may have to consider just selling these Eris E5 XT's and go back to using one of the other brands mentioned in my OP, which is unfortunate really.

I've read in other forums and product reviews of various Presonus speakers, that this is an ongoing issue and it shouldn't be.

Thanks for all your help and suggestions...now I have some thinking to do.

Ben

When having issues the trick is to not spend money on trying out what works to fix it. The line conditioner didn’t fix it, so return it. Turning up the DAC and turning down the speaker gain doesn’t cost a thing. Checking out if a DI fixes your issue can be done ‘for free’ as well. And not all DI’s cost $170.
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by berndherrmann1 on Wed Dec 09, 2020 11:58 am
Have now tried everything, including all of the recommendations here - however, the issue is still there. I ordered the recommendation by one of the folks replying for a passive DI (see link below) and some XLR cables, and have returned the line conditioner. This particular $50 passive DI comes highly recommended on several audiophile forums, so why not give it a try. I've read quite a few comments about the audio quality, noise levels, etc., being much better with balanced cables attached to the Presonus speakers. So now I can at least convert my unbalanced audio signal into a balanced one.

https://www.audiopile.net/DBRC-2A#tab-1

Will see what happens...but again, none of these issues were present with other brand powered speakers. So far I've used Kanto's, Audio Engine, Edifier, and Swans and there were no issues with noise, hum, or hiss with the same setup I'm currently using. I'm surmising that the Presonus speakers far more susceptible to RFI noise when using the unbalanced RCA cables.
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by SwitchBack on Wed Dec 09, 2020 1:12 pm
Yes, it’s a thing. I believe most of the PreSonus gear is designed with professional use in mind, meaning balanced connections and line levels (+4dBu). IMHO they should have omitted the RCA inputs completely. Maybe handy in a pickle but consumer audio levels (-10dBu) are too different from pro audio levels for a good marriage, let alone the balanced-unbalanced thing :)
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by Jemusic on Thu Dec 10, 2020 7:26 pm
The Zen/Dac may not be the best way to go. It's a headphone amp. I would say there is an incompatibility between the Zen/Dac and the Eris monitors.

Consider a DAW audio interface which will have balanced TRS output connectors. (Even a small PreSonus one will do the job nicely) You will need to record into Studio One at some point either on two channels or more. Use a balanced TRS to TRS lead to connect from the outputs of an audio interface to the monitors. They will be silent then.

Please add your specs to your SIGNATURE.
Search the STUDIO ONE 4 ONLINE MANUAL. Access your MY.PRESONUS account.
OVERVIEW of how to get your issue fixed or the steps to create a SUPPORT TICKET.
Needs to include: 1) One Sentence Description 2) Expected Results 3) Actual Results 4) Steps to Reproduce.



Specs i5-2500K 3.5 Ghz-8 Gb RAM-Win 7 64 bit - ATI Radeon HD6900 Series - RME HDSP9632 - Midex 8 Midi interface - Faderport 2/8 - Atom Pad- iMac 2.5Ghz Core i5 - High Sierra 10.13.6 - Focusrite Clarett 2 Pre & Scarlett 18i20. Studio One V5.3 (Mac), Notion 6.8, Ableton Live 11 Suite, LaunchPad Pro

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