The Official Sequential/DSI Forum

Pro 3 hum/noise @ 3.5 - 4.5 kHz range

Petur

  • *
  • 15
  • Pro 3 - Rev 2
Pro 3 hum/noise @ 3.5 - 4.5 kHz range
« on: August 31, 2020, 05:20:41 AM »
Hi Pro 3 owners,

Love this synth but there's something weird going on. I have this noise/hum going on all the presets when I turn the filter down (All the filter types). There is no noise when the synth is idle, only when I play it. Do you have any idea what is going on?

I've attached a sound sample and also a picture from an eq where the noise occurs in the frequency range "3.5 - 4.5 kHz" (see the red arrow in the attached picture).

N.B. this was recorded with no effects or eq - just straight with no sugar. PRO3 Master Volume at 50%. (Preset U1 P1 Old Saw)

I can also hear this noise with headphones connected to the PRO3.

Am I the only one with this hum/noise in the 3.5 - 4.5 kHz range, can you help me out to verify this?

P.

Re: Pro 3 hum/noise @ 3.5 - 4.5 kHz range
« Reply #1 on: August 31, 2020, 06:07:24 AM »
I had this with mine, had to send it back, got a new replacement, it was like a metalic distortion underneath certain notes, like a low freq distortion, when you hear it you can zero in with the filter and find and make it louder.


Hi Pro 3 owners,

Love this synth but there's something weird going on. I have this noise/hum going on all the presets when I turn the filter down (All the filter types). There is no noise when the synth is idle, only when I play it. Do you have any idea what is going on?

I've attached a sound sample and also a picture from an eq where the noise occurs in the frequency range "3.5 - 4.5 kHz" (see the red arrow in the attached picture).

I had this with mine had to send it back and then got a replacement, the replacement is also doing this on some presets but not all, my first machine was crazy bad, it sounded like a metallic distortion underneath certain low freq notes.

N.B. this was recorded with no effects or eq - just straight with no sugar. PRO3 Master Volume at 50%. (Preset U1 P1 Old Saw)

I can also hear this noise with headphones connected to the PRO3.

Am I the only one with this hum/noise in the 3.5 - 4.5 kHz range, can you help me out to verify this?

P.
« Last Edit: August 31, 2020, 06:10:00 AM by Fiddlestickz »

Petur

  • *
  • 15
  • Pro 3 - Rev 2
Re: Pro 3 hum/noise @ 3.5 - 4.5 kHz range
« Reply #2 on: August 31, 2020, 06:47:59 AM »
Thanks Fiddlestickz,

I'm pretty much screwd - I can't return this unit. Bought it through Andertons.uk to Iceland and they have no return policy / warranty outside U.K.

P.

S Y Z Y G Y X

  • **
  • 152
  • WWW.SYZYGYXMUSIC.COM
    • S Y Z Y G Y X
Re: Pro 3 hum/noise @ 3.5 - 4.5 kHz range
« Reply #3 on: August 31, 2020, 08:06:53 AM »
Contact Sequential tech support, possibly you can just take out the main voice board and send it to them for repair.  I had an issue like this with my Prophet 12 it was a higher pitched frequency artifact in the sound of the oscillators but all I had to do was take out the main voice board and send it in. 

Thatís pretty shitty of Andertons return policy big middle finger to them for that. 
SEQUENTIAL Pro 3, DSI Prophet 12, DSI Prophet Rev2-8, Moog Subsequent 37, Roland Alpha Juno 2, Novation Bass Station 2, BOSS VE500, MOTU Micro Lite, AKAI APC240 MKII, UAD Apollo X6, MacBook Pro 2017, ADAM A7X Monitors, Logic X
www.syzygyxmusic.com
https://syzygy-x.bandcamp.com

Petur

  • *
  • 15
  • Pro 3 - Rev 2
Re: Pro 3 hum/noise @ 3.5 - 4.5 kHz range
« Reply #4 on: August 31, 2020, 08:49:09 AM »
That's a great idea S Y Z Y G Y X - I'll try that!  8)

Re: Pro 3 hum/noise @ 3.5 - 4.5 kHz range
« Reply #5 on: August 31, 2020, 08:59:59 AM »
Sounds similar to my story, which is also on this forum

https://forum.sequential.com/index.php/topic,4562.0.html

My replacement unit was fine, and did not have this "whistling" sound.

Even if they don't do returns, I would still write them and ask for options.
Some companies will help you out if you work with them.
Doesn't hurt to ask :)

Best regards,

Gino


Petur

  • *
  • 15
  • Pro 3 - Rev 2
Re: Pro 3 hum/noise @ 3.5 - 4.5 kHz range
« Reply #6 on: September 02, 2020, 03:35:22 AM »
Thanks Gino,

I sent them an email regarding this issue, hopefully they can give me an advice.

Re: Pro 3 hum/noise @ 3.5 - 4.5 kHz range
« Reply #7 on: September 20, 2020, 06:01:17 AM »
I received my Pro 3 yesterday and it has this exact fault. Noticed straight away when I started having a play and it's easy to isolate the digital/white noise using an EQ around 3-4k on my unit with the filter turned down. I noticed the noise subsided quite a lot after playing with it most of the evening, turned it on again this morning and it's back with a vengeance, very frustrating  >:(

Emailed Scan regarding a replacement earlier so hopefully they can help.

Re: Pro 3 hum/noise @ 3.5 - 4.5 kHz range
« Reply #8 on: September 20, 2020, 03:24:25 PM »
The one that I had with a similar problem had a serial number that ended in "48".

If your serial number ends in "48" I hope they fixed it before they sent it out :)

« Last Edit: September 20, 2020, 03:26:47 PM by Gino.Cortesi »

Re: Pro 3 hum/noise @ 3.5 - 4.5 kHz range
« Reply #9 on: September 23, 2020, 03:34:20 PM »
@Petur did you have any luck finding a solution?

Im convinced the noise is coming from the oscillator amp section after trying to make sense of it the past couple of evenings.
Mines in its box now waiting to be sent back for replacement.

Added some examples for anyone curious

Petur

  • *
  • 15
  • Pro 3 - Rev 2
Re: Pro 3 hum/noise @ 3.5 - 4.5 kHz range
« Reply #10 on: September 24, 2020, 09:53:35 AM »
@Petur did you have any luck finding a solution?

Im convinced the noise is coming from the oscillator amp section after trying to make sense of it the past couple of evenings.
Mines in its box now waiting to be sent back for replacement.

Added some examples for anyone curious

Hi Kongsfinger,

No there was no solution, this is hardware related and you should send it back for a replacement. I know it sucks to wait but believe me, it will be worth it.

I've got a new motherboard replacement and damn - what a difference in sound and enjoyment. Totally worth the hassle!

I listnened to your audio samples and this was exactly what was driving me crazy.

P.
« Last Edit: September 24, 2020, 09:59:01 AM by Petur »

Re: Pro 3 hum/noise @ 3.5 - 4.5 kHz range
« Reply #11 on: September 24, 2020, 09:57:08 AM »
@Petur did you have any luck finding a solution?

Im convinced the noise is coming from the oscillator amp section after trying to make sense of it the past couple of evenings.
Mines in its box now waiting to be sent back for replacement.

Added some examples for anyone curious

Hi Kongsfinger,

No there was no solution, this is hardware related and you should send it back for a replacement. I know it sucks to wait but beleive me, it will be worth it.

I've got a new motherboard replacement and damn - what a difference in sound and enjoyment. Totally worth the hassle!

P.

Great to hear you got it sorted out!


Petur

  • *
  • 15
  • Pro 3 - Rev 2
Re: Pro 3 hum/noise @ 3.5 - 4.5 kHz range
« Reply #12 on: September 24, 2020, 10:04:29 AM »
Thanks Gino! :)
« Last Edit: September 24, 2020, 10:06:41 AM by Petur »

Re: Pro 3 hum/noise @ 3.5 - 4.5 kHz range
« Reply #13 on: September 27, 2020, 10:36:43 AM »
@Petur did you have any luck finding a solution?

Im convinced the noise is coming from the oscillator amp section after trying to make sense of it the past couple of evenings.
Mines in its box now waiting to be sent back for replacement.

Added some examples for anyone curious

Hi Kongsfinger,

No there was no solution, this is hardware related and you should send it back for a replacement. I know it sucks to wait but believe me, it will be worth it.

I've got a new motherboard replacement and damn - what a difference in sound and enjoyment. Totally worth the hassle!

I listnened to your audio samples and this was exactly what was driving me crazy.

P.

@Petur That's great news they sent you a replacement board and you can experience the Pro 3 in all its glory!

Scan have been kind enough to test my replacement unit before sending it out to ensure I don't end up with another faulty one. Hopefully getting it back next week

Petur

  • *
  • 15
  • Pro 3 - Rev 2
Re: Pro 3 hum/noise @ 3.5 - 4.5 kHz range
« Reply #14 on: September 27, 2020, 01:38:01 PM »
Excellent news Kongsfinger and a great move to let them test it before shipping!  8)

P.