I don't want to distract from the thread but reseller yes, agent model no. There's also point of taxation etc too between the models. Certainly sounds like a reseller model.
Wrong forum, the topic does not belong to DIY.
I looked here, because the tranny in my (self made) 12 years old F5 began to hum. It is a Talema torroidal. I ordered replacement from Toroidy in Poland and hope to solve the problem soon.
I looked here, because the tranny in my (self made) 12 years old F5 began to hum. It is a Talema torroidal. I ordered replacement from Toroidy in Poland and hope to solve the problem soon.
I also had Talema in my M2X mono blocks and switched to Toroidy to try to eliminate the mechanical hum. But it did not solve it. There were other reasons but problem did got solved as explained elsewhere in this thread. Talema are perfectly fine. Under some conditions toroid transformer will vibrate more then usual and it just uses the chassis as "soundboard" which amplifies the sound. Even the most silent transformer will have a humming sound if you put ear close enough to the transformer. A solution can also be to isolate the transformer mechanical from the chassis. I know a transformer company which use both rubber and epoxy for encapsulation of transformers to be used in large audio amps. Those where some 3.5 kVA transformers.
I’ve had my share of transformer buzzing issues and it can certainly be maddening. Perhaps it’s been suggested, but I would consider taking the amp to a friend, relative or accommodating stranger’s house and plug it in there. That would at least take your specific setup out of the equation.
And plugging out other hifi devices just to exclude. Chances are small but it happens.
Regarding the subject being non DIY and even “wrong forum” is odd. There are various threads on non DIY stuff. It is about a non technical user asking the community if the detected phenomenon is normal and/or acceptable. Technically exactly the same issue when a DIY device has a humming toroid transformer. As we all know this happens quite often.
In both situations it is not acceptable and annoying. That it will be solved a different way is clear. The suggested actions and helpful comments are high quality in this thread and likely have covered all possible issues. All OP has to do are some simple actions and report back if they have had effect. If not it simply are the devices themselves that are the cause (followed by returning the devices for exchange/repair and/or legal mumbo jumbo).
Regarding the subject being non DIY and even “wrong forum” is odd. There are various threads on non DIY stuff. It is about a non technical user asking the community if the detected phenomenon is normal and/or acceptable. Technically exactly the same issue when a DIY device has a humming toroid transformer. As we all know this happens quite often.
In both situations it is not acceptable and annoying. That it will be solved a different way is clear. The suggested actions and helpful comments are high quality in this thread and likely have covered all possible issues. All OP has to do are some simple actions and report back if they have had effect. If not it simply are the devices themselves that are the cause (followed by returning the devices for exchange/repair and/or legal mumbo jumbo).
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Just make the amp so heavy so it can't "hum" (all mechanical resonances < 50 Hz).
Get one of these or maybe two if they can run in bridged mode.
https://dadbluecat.com/shop/6-power-amplifiers/21-the-only-one-power-amplifier/
Or maybe just two of these if you are on a budget:
https://dadbluecat.com/shop/6-power-amplifiers/22-the-one-power-amplifier-mono-block/
I got some custom chokes / transformers made at the same factory which made (at that time some years ago) transformers for "DAD" and they showed me the rubber and epoxy encapsulation.
Very off topic.......just for fun 😎
Get one of these or maybe two if they can run in bridged mode.
https://dadbluecat.com/shop/6-power-amplifiers/21-the-only-one-power-amplifier/
Or maybe just two of these if you are on a budget:
https://dadbluecat.com/shop/6-power-amplifiers/22-the-one-power-amplifier-mono-block/
I got some custom chokes / transformers made at the same factory which made (at that time some years ago) transformers for "DAD" and they showed me the rubber and epoxy encapsulation.
Very off topic.......just for fun 😎
UPDATE: Today my dealer [Audio Emotion, Scotland] sent me a huge 20kg mains regenerator. I can still hear the transformer. 🙁
Update: My dealer [Audio Emotion, Scotland] has offered me the regenerator for £1000 or a Puritan Audio 156 [£1550]. Following advice on this thread which I'm very grateful for: I've asked an Electrician to come and fix a Voltage Regulator, separate Earth Rod, and separate the mains feed into the hi-fi. What a scandal. I have to go through all this trouble and expense to get Pass Labs to work as expected. I pray this thread will caution others that they only buy items on a sale or return basis. I would have been a loyal lifetime customer of Pass Labs, but I was kicked in the teeth on my first purchase of their products. Heartbroken.
Why do you not just reject the product as 'unsatisfactory'. Consumer law in the UK is on your side if the product has a genuine issue and given that this is such a premium product makes that even more valid. It should be faultless.
As to what you propose, how do you know that will eliminate the problem?
You say the regenerator hasn't made any difference.
Reject the product under consumer law would be my advice.
As to what you propose, how do you know that will eliminate the problem?
You say the regenerator hasn't made any difference.
Reject the product under consumer law would be my advice.
Andy, the regenerator did not work. What do you expect from the voltage regenerator and the electricians work?! It seems clear answers and explanations are not enough.
It is in the devices, nothing will cure their fault when the devices themselves are not exchanged or repaired. Everything else is a waste of time and resources. I bet a different (cheap) device will not exhibit the behavior in the same circumstances.
You haven’t replied to many suggestions which is unfair as people use their time to help you. You could take the devices to a friends home and if they still hum there is 0% doubt. If so you should not post here but put time in getting the devices ASAP back to the seller. Regardless of brand, cost etc. you did not get what you thought you bought. That is enough to cancel the deal especially as it is a serious complaint and not just regret or the like.
Please be careful with what you say about the brand. As you probably have noticed criticism or even suspected criticism is enough for some to become nasty.
It is in the devices, nothing will cure their fault when the devices themselves are not exchanged or repaired. Everything else is a waste of time and resources. I bet a different (cheap) device will not exhibit the behavior in the same circumstances.
You haven’t replied to many suggestions which is unfair as people use their time to help you. You could take the devices to a friends home and if they still hum there is 0% doubt. If so you should not post here but put time in getting the devices ASAP back to the seller. Regardless of brand, cost etc. you did not get what you thought you bought. That is enough to cancel the deal especially as it is a serious complaint and not just regret or the like.
Please be careful with what you say about the brand. As you probably have noticed criticism or even suspected criticism is enough for some to become nasty.
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Of course they did, but it is completely unnecessary. Send it back (hopefully at their expense).
You're grasping at straws, and you have not provided evidence that you've followed the best advice (IMO) provided. Take it to another house / try it on a different circuit / make sure other devices that could be contributing are turned off / unplugged. Unless you can explain precisely why you're doing this (except that someone told you that it might work) ... DON'T!. You're literally throwing good money after bad (IMO). In some cases an additional earth rod can be dangerous and cause more issues than it might solve. WHY!? If you have an issue like MEPER (truly non sinusoidal AC waveform), which is very real, this will not solve any of it, but the 'regenerator' would/should have.
No, you don't. You're choosing to go through "all this trouble and expense". You seem to be a glutton for punishment. You don't get my sympathy. It's no scandal.
You've never answered (that I could see) several questions that have been asked of you. I won't get into retail laws in your jurisdiction. That's between you and the seller. Either way, even if they're not legally obliged to do so, they should take the unit back and return your money. Worst case, they should exchange it for another product. YOU seem to be the hold out here. You've never said that they won't take the unit back (that I remember). The shipping should also be on them, but... that's more of a negotiation. They should do this to preserve their good name, and b/c simply it's the correct thing to do if you notified them of the issue early enough (and if you've provided a full and truthful sequence of events).
No, you were not. You've had a setback. Possibly there is an issue with the gear, but I haven't seen enough actual evidence to agree with you. It's a confluence of events. Two units behaving the same way? Your (completely uninformed) dealer telling you that the gear is "sensitive". What does that mean? If that's the situation, why didn't they tell you that up front? Until you hear from PASS LABS or their word passed directly through to the dealer that this product won't work on your mains voltage .... again, STOP. You should not have to jump through hoops.
Stop letting the dealer, electrician, or whomever, give you bad advice; and quit throwing more money at the problem. It may be the unit, it may not. Either way, the solution is SEND IT BACK.
How can you mend a broken heart? Ask Al Greene.
or...
tl;dr ... My advice - Stop trying to use bad at worst / unnecessary at best solutions to solve a simple problem. Send the unit back. Demand a full refund or exchange in-kind. Pick something else.
Or the mods shut it down while the salient points mentioned in the thread are "being attended to" ... and (my speculation) hope the conversation dies. I, for one, am still very curious re: the situation in the thread linked below. After the OPs amp was discussed, the conversation led to new, factory spec, amplifiers in the line being sold into the EU meeting directives / regulations for both power claims (advertising) and regulations dealing with "mains pollution". I'm out of the regulatory field, and I don't live in the EU, but I am always curious. It quite frankly shocked me that even though the members were in-general polite, that the thread was closed for moderation and the discussion cut at the knees. I had actually learned quite a bit from some members knowledgeable in the field, and I had hoped to pick up a few more tidbits re: the second post linked below. This is not a dig at anyone... I simply don't agree with the thread being closed with no updates from anyone re: those salient points. Surely someone has directly verified if the products were/are legal for sale in the EU and could provide a few bullet points as to why or why not as set by the directives / regulations ... It's not critical to me, but it still nags at me to find a conclusion. Sorry for the OT.
https://www.diyaudio.com/community/...gs-of-pass-x600-5.391805/page-19#post-7173895
https://www.diyaudio.com/community/...gs-of-pass-x600-5.391805/page-19#post-7173842
Rule breaking posts removed. Personal attacks are not allowed on DiyAudio. That is a long standing rule that all of you already know.Anymore nonsense will result in thread bans or the closing of this thread.
Off Pass's website.
"Non-North America customers should consult with their original Pass Labs dealer or distributor for warranty repair instruction prior to contacting the factory or shipping product to the factory for repair."
As I understand it, you have tried dealing with your dealer to no avail. I would try the amp at a friend's house to confirm that the hum happens no matter where the amp is operated and give Pass Labs a phone call. If you take a cell phone video capturing the hum, I think that will help explain things.
I am trying to understand the separate mains feed comment. Are you putting the system on a separate breaker? If so, that is not a huge project and I would recommend it anyways based on my experience posted earlier. Although testing the amp somewhere else in the house or at a friend's house would likely achieve the same goal (for testing's sake) I did mine just because of the added benefit of making my system sound better.
"Non-North America customers should consult with their original Pass Labs dealer or distributor for warranty repair instruction prior to contacting the factory or shipping product to the factory for repair."
As I understand it, you have tried dealing with your dealer to no avail. I would try the amp at a friend's house to confirm that the hum happens no matter where the amp is operated and give Pass Labs a phone call. If you take a cell phone video capturing the hum, I think that will help explain things.
I am trying to understand the separate mains feed comment. Are you putting the system on a separate breaker? If so, that is not a huge project and I would recommend it anyways based on my experience posted earlier. Although testing the amp somewhere else in the house or at a friend's house would likely achieve the same goal (for testing's sake) I did mine just because of the added benefit of making my system sound better.