Whump whump whump sound?

[SailToTheMoon]

Hi everyone. I bought a setup (Rega PS3 RS turntable, Cyrus i9-XR amp, Focal Vestia No 2 floor standing speakers) last March with some excellent advice from this forum and have been really happy with it.

However recently I’ve noticed this odd kind of “whump whump whump” bassy noise - a bit like a helicopter. It only happens when the volume is pretty loud (-20 ish or louder) and when the needle is on the record. It is most noticeable between tracks, or in parts of songs that are really quiet. The two bass cones on my speakers vibrate like the clappers when it happens.

Just wondering if this is something that’s common at all, and if there’s an easy fix? I plan to call the shops that I bought the gear from, but would appreciate any intel on this before I do if possible!

Thanks in advance. 🙂

(PS - I could have videod this but I think the forum only allows pics)

 

[makinmusic]

You could upload video to YouTube and embed video in post.

 

[Al ears]

Has this only just occurred?
It sounds like a low frequency feedback issue which is why your woofers are suffering cone over excursion.
Have you recently changed position of turntable relative to your speakers?
One reason some phono preamps come fitted with a subsonic filter.

 

[daytona600]

Acoustical feedback as per AL above
All Regas have no isolation , design fault and the reason DJs uses technics in night clubs with huge sound systems

Cyrus i9-XR amp does this have a subsonic filter , should remove all the rumble

Expensive to cure - can you fit a wall shelf / isolation platform / rigid hifi rack

Cheap Hack 2 off IKEA Aptitlig bamboo chopping boards as a isolation Platform with 7/16inch ball bearings

chopping board has a shallow rounded channel routered on side. The channel is there to catch liquid
2 chopping boards, with the channels facing each other and ball bearings in between, to make a isolation platform under the TT, if you dont have any ball bearings try a semi-inflated bicycle inner tube

 

[Fandango Andy]

Hi everyone. I bought a setup (Rega PS3 RS turntable, Cyrus i9-XR amp, Focal Vestia No 2 floor standing speakers) last March with some excellent advice from this forum and have been really happy with it.

However recently I’ve noticed this odd kind of “whump whump whump” bassy noise - a bit like a helicopter. It only happens when the volume is pretty loud (-20 ish or louder) and when the needle is on the record. It is most noticeable between tracks, or in parts of songs that are really quiet. The two bass cones on my speakers vibrate like the clappers when it happens.

Just wondering if this is something that’s common at all, and if there’s an easy fix? I plan to call the shops that I bought the gear from, but would appreciate any intel on this before I do if possible!

Thanks in advance. 🙂

(PS - I could have videod this but I think the forum only allows pics)

It sounds like a warped record. are they stored correctly and in goof order?

 

[SailToTheMoon]

Has this only just occurred?
It sounds like a low frequency feedback issue which is why your woofers are suffering cone over excursion.
Have you recently changed position of turntable relative to your speakers?
One reason some phono preamps come fitted with a subsonic filter.

I’ve looked up what this is (I’m a noob!) and it definitely sounds like this could be it. Weird thing is that I haven’t moved anything an inch since March. Maybe it was there and I didn’t notice it, maybe it’s just on the brand new Bowie album I got the intro song (Five Years) is really quiet for a while so I can hear the thrumming - and now I can hear it I can’t unhear it!! And another new album I got was Paul’s Boutique which has a first song that slowly starts from silence as well….

 

[SailToTheMoon]

It sounds like a warped record. are they stored correctly and in goof order?

Brand new records 🙂

 

[SailToTheMoon]

Acoustical feedback as per AL above
All Regas have no isolation , design fault and the reason DJs uses technics in night clubs with huge sound systems

Cyrus i9-XR amp does this have a subsonic filter , should remove all the rumble

Expensive to cure - can you fit a wall shelf / isolation platform / rigid hifi rack

Cheap Hack 2 off IKEA Aptitlig bamboo chopping boards as a isolation Platform with 7/16inch ball bearings

chopping board has a shallow rounded channel routered on side. The channel is there to catch liquid
2 chopping boards, with the channels facing each other and ball bearings in between, to make a isolation platform under the TT, if you dont have any ball bearings try a semi-inflated bicycle inner tube

View attachment 10777

This is brilliant, thanks. I’m going to give it a go and report back.

 

[SailToTheMoon]

You could upload video to YouTube and embed video in post.

I’ll give this a bash if the low frequency feedback solution below doesn’t pan out. 👍🏻