With subwoofer off I mean Subwoofer amplifier is switched off. If he means that, than yes.
Mind bending rumble trouble
- Thread starter Whaleudder
- Start date
With subwoofer off I mean Subwoofer amplifier is switched off. If he means that, than yes.
Does the house have any mechanical systems which could be putting constant low frequency vibrations into the floor structure on a continuous basis? Is there some sort of factory or similar facility nearby that could produce subsonic vibrations affecting the house?
OP said the problem started a week or two ago. What changed (both in the house and in the surrounding environment) at that time?
OP said the problem started a week or two ago. What changed (both in the house and in the surrounding environment) at that time?
One would hope it is same difference, but if his subwoofer amp puts out some sort of low frequency hum it is feasible that it could affect the TT even if disconnected.
I did not read the whole thread thoroughly, but if this was happening to me, I would definitely go with a wall shelf (as you've recommended). I would also be trying to identify what might have changed at the same time the problem started.
If it is really resonance from arm/cart mismatch, it seems like it would have been occurring all along. If I understand the OP's earlier posts, this problem just popped up one day...and now affects multiple tables with multiple carts.
Please remember that the OP took his entire system out of his house and moved it to another location, in which the problem persisted.
Not if it is unplugged, and I believe the OP said he did that but yes, let's make sure the sub is UNPLUGGED from the wall (the circuit) to be sure.
And apparently persisted with different amps, different speakers and different TTs. So is NOTHING consistent? Not the gear, not the location, not the electrical service, nothing other than the user (and, of course, the problem itself)?
If there is not a consistent element in the mix, the OP has been cursed.
Yes, I believe He is Te Tapihana Tiriwa. In this case exorcism will not help, noise level can only rise significantly. So OP should find a Maori priest who can reconcile OP with Chief.
Because (in 1878):
Ngatimaniapoto
Number: 2,000. All hostile.
Leading men: Rewi Maniapoto, Tikaokao, Te Tapihana Tiriwa (taken prisoner at Rangiriri). These three chiefs are and have been active and resolute opponents of the Government.
https://www.wcl.govt.nz/maori/wellington/turtonchiefs.html
Whaleudder
New Member
Well there are two constants at play here, the power supply to the house and me. The power to the house next door is on the same lines so someone up the street may have put something on the line that may be causing the issue. I’m going to borrow some power filtering equipment to test that theory. Second constant is me, and I think the curse I have is maybe not doing a good enough job of cartridge alignment.
I have setup two parallel systems in the same house. Different amp, speakers and turntable and same result from that system. I have also tested basically all combinations of power on and off of components.
Regarding the wall worts I just checked and they are all within their correct operating ranges.
next steps: get some power filtering equipment and test using that.
get someone with an oscilloscope to come take a look and see if they can make heads or tails out of it.
mount the turntable on a shelf.
Get someone out who can check and/or setup my cartridge correctly (assuming it’s not right)
consult local iwi about getting the house blessed.
I have setup two parallel systems in the same house. Different amp, speakers and turntable and same result from that system. I have also tested basically all combinations of power on and off of components.
Regarding the wall worts I just checked and they are all within their correct operating ranges.
next steps: get some power filtering equipment and test using that.
get someone with an oscilloscope to come take a look and see if they can make heads or tails out of it.
mount the turntable on a shelf.
Get someone out who can check and/or setup my cartridge correctly (assuming it’s not right)
consult local iwi about getting the house blessed.
Whaleudder
New Member
MAJOR UPDATE:
Ok I have just done a few tests of things that have popped into my head. Most of them are irrelevant because they showed no change.
However there are two things that I have just tested that may finally be a breakthrough.
First, it is only when the platter is moving that I’m getting the actual issue. I did a bunch of needle down tests with and without the record spinning and I can confirm that it is only when it’s spinning that the issue is present.
Second, the outside or a record is much worse than the inside of a record (if that makes sense). I have been using the lead in of a record to test because the needle is down and the record is spinning but no sound is coming from the record (in theory). Tonight I figured I would try the run out at the end of a record. There was ZERO problems at the end of the record. I then tested between flat and slightly warped records and while both were not great on the outside of the record the flat ones got better sooner towards the end of the record, the warped ones all got to the point where they had no issue at run out.
So it would seem that this all may be caused to the turntable being hyper sensitive to any form of warp and maybe not having good alignment at the outside of the record vs the inside.
So this has ruled out electrical because the runout would still have the same issue.
Would the weight adjustment of the stylus product this effect if it’s not correctly calibrated? The turntable has a dial where you zero it by making the tone arm float, then you turn it to a point and that in theory is the correct weight however I have not verified this with a digital scale (I don’t have anything that can measure the accurately.
Ok I have just done a few tests of things that have popped into my head. Most of them are irrelevant because they showed no change.
However there are two things that I have just tested that may finally be a breakthrough.
First, it is only when the platter is moving that I’m getting the actual issue. I did a bunch of needle down tests with and without the record spinning and I can confirm that it is only when it’s spinning that the issue is present.
Second, the outside or a record is much worse than the inside of a record (if that makes sense). I have been using the lead in of a record to test because the needle is down and the record is spinning but no sound is coming from the record (in theory). Tonight I figured I would try the run out at the end of a record. There was ZERO problems at the end of the record. I then tested between flat and slightly warped records and while both were not great on the outside of the record the flat ones got better sooner towards the end of the record, the warped ones all got to the point where they had no issue at run out.
So it would seem that this all may be caused to the turntable being hyper sensitive to any form of warp and maybe not having good alignment at the outside of the record vs the inside.
So this has ruled out electrical because the runout would still have the same issue.
Would the weight adjustment of the stylus product this effect if it’s not correctly calibrated? The turntable has a dial where you zero it by making the tone arm float, then you turn it to a point and that in theory is the correct weight however I have not verified this with a digital scale (I don’t have anything that can measure the accurately.
It is important, because most of our assumptions are made presuming effect is similar if record spinning or not. But the same problem with both tables? The first do coarse test - measure overhang at the end of record (it should be about 15mm from tip to spindle center, but it depends on tonearm) and look cartridge is secured to tonearm and is parallel to that. Then reset tracking force to optimal (never less, because you will damage record immediately).
If does not help, find technician, Maori priest or 2 in 1, if possible.
