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Sennheiser HD 25 II intermittent signal issue

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In in the "What to look for in headphones?" thread, imagist notes the same problem I am having with the HD 25 II, and the same that Simon B experienced with HD250 II.

-The point of connection between the cable and earcup becoming intermittent-

As well as the seemingly random loses of signal, it is also guaranteed to lose signal when a loud transient is received (eg a clapper board, a shout).

I feed my cans lower volume than anyone I know.

It is always the left earcup and it is fixed by applying small pressure to the connector in a forwards direction.

I otherwise love my HD25s and was ready to buy a spare pair when this started some moths back.

Imagist mentioned that tinning the connectors seemed to give another couple months before intermittent behaviour, but I would love to find a more permanent solution.

Has anyone found anything to help?

Thanks

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Jiggle the connector or buy a new set. Hd25 are usually good for two years before the problem starts.

I suspect it's the cable, as I did replace it on my first set and was ok for next 6-9 months, then the problem was back.

Tried tining the connector - not a definitive solution.

Even with this issue hd25s are still my phones of choice - to much else good about them

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I gave up on HD25's a long time ago due to this persistent issue. I have 3 pairs, all of which exhibited this irritating fault with the cheap connector which goes into the cup. Not professional IMO. I have far cheaper sets which have decent robust connectors. Although I used to think they were good, once I switched I adapted to the new ones (Sony) and going back, HD25's don't sound that good. In fact too bassy. I think, like speakers, you learn to interpret based on familiarity. There are much better phones out there. HD25's are old in the tooth now.

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Like most I have had this issue also. If you pull the lead out from the ear cups and clean the two little pins your HD25's should work all fine. Have a pair 6 years old that are still good.

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In in the "What to look for in headphones?" thread, imagist notes the same problem I am having with the HD 25 II, and the same that Simon B experienced with HD250 II.

-The point of connection between the cable and earcup becoming intermittent-

As well as the seemingly random loses of signal, it is also guaranteed to lose signal when a loud transient is received (eg a clapper board, a shout).

I feed my cans lower volume than anyone I know.

It is always the left earcup and it is fixed by applying small pressure to the connector in a forwards direction.

I otherwise love my HD25s and was ready to buy a spare pair when this started some moths back.

Imagist mentioned that tinning the connectors seemed to give another couple months before intermittent behaviour, but I would love to find a more permanent solution.

Has anyone found anything to help?

Thanks

The only way to correct the problem would be to bypass the plug in connection and to hard wire the cable directly into the internal solder points.

Eric

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my HD 25 II's gave me this problem, went back to Sennheiser, got NEW transducers, and i got a new cable, and yet the same thing.

I intend to shake the Sennheiser tree sometime soon. Either they acknowledge the issue with their so-special two-prong connector, or they lose face.

Need to figure out a way to get Sennheiser at least 10, if not more people with this issue.

HD25s are a great pair of headphones, but i will NOT go with them if they work like cheap amateur pair of earbuds for a phone.

1. Cleaning the pins? Not a solution. I WONT clean pins that are not supposed to be regularly cleaned. If Sennheiser intended this, let them tell us.

2. Tinning the pins - definitely not a manufacturer's recommendation.

Although we have a few people here who have MADE these work for them, this is not what we are paying for.

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Eric, you will have to drill a hole, rather split the thing apart to do what you suggest. These transducers are inbuilt into the plastic cup. With the female two-prong connector built in.

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BTW - have already sent Sennheiser (india) a link to this thread. I know these are decent guys, and will take things seriously.

Let's see what comes...

-vin

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Eric, you will have to drill a hole, rather split the thing apart to do what you suggest. These transducers are inbuilt into the plastic cup. With the female two-prong connector built in.

Ah, ok got it. Perhaps they're not designed for the rough & tumble field production world.

Eric

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It's a known issue.

Has been for years

I was warned when I bought my first pair never to disconnect them.

That was 5 years ago and that pair is fine.

I have a second hand pair though and it's the same problem.

Hopefully the mk 3 will have a better connector so yes let's rattle their cage a bit...

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This is a well known issue at Sennheiser HQ, and certainly at Sennheiser UK.

I believe there was at least one iteration of the pin connector that was particularly bad - Sennhesier should be able to tel you which. I do not believe that they ever replaced anyone's 'bad' connector.

I have found on my HD250 Mk2's that it helped to use some of that magical conductive snake oil stuff (I forget the name). Also the take a pair of pliers and bend the two pins just slightly away from each other.

I finally solved the problem by changing to HMD26 headphones - I now love them.... and they have a built in boom mic so that I can speak to my boomerators. They are hellish expensive, but seem to be like HD25s done right!!!

Kindest regards,

Simon B

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" use some of that magical conductive snake oil stuff "

or maybe even some of that silver bearing grease that Lectro Larry sent for use on the battery caps... ::)

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<<As well as the seemingly random loses of signal, it is also guaranteed to lose signal when a loud transient is received (eg a clapper board, a shout).>>

what kind of snake oil or grease needed to fix this?

this is a product design defect, Sennheiser needs to fix this. with oil or whatever else...

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" this is a product design defect, Sennheiser needs to fix this. "

I hope you are not holding your breath waiting for that to happen...

...in the meantime, just a touch of the same stuff Lectro uses to solve a similar problem may well help you solve the problem... what is wrong with that?? :blink:

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If you pull the lead out from the ear cups and clean the two little pins your HD25's should work all fine.

Thanks Nate. What are you using to clean them?

Perhaps they're not designed for the rough & tumble field production world.

Shocking thing is, my cans don't see any rough and tumble, neither did my previopus pair of 25's, they are really well looked after.

So I'm not sure what Sennheiser's excuse could be here.

I was warned when I bought my first pair never to disconnect them.

That was 5 years ago and that pair is fine.

Never disconnected mine.

Also the take a pair of pliers and bend the two pins just slightly away from each other.

Thanks. Will try this if cleaning doesn't help.

just a touch of the same stuff Lectro uses to solve a similar problem may well help you solve the problem

Thanks Mike. Do you have a name for that stuff Lectro uses, or any info on it?

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hey come on man! bendybones, you answered everyone but me man...

I hope you are not holding your breath waiting for that to happen...

Hell No Senator, it's a pair of heapdhones, 200 bucks. that's all. life goes on, with or without them. i got other alnertatives. :)

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Happy user of the HD-25 II and the boomset version, the HMD25-XQ. Funny that the boomset version is made in Germany where the phone are made in Ireland.

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Thanks Nate. What are you using to clean them?

Some cleaning spirits and an old hard bristled toothbrush. Last time I did this was about 3 years ago and haven't had any issues since.

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I've replaced the cable once only to find it was the right side driver. Replaced that and alls been good so far. I love them for booming as they're smaller and offer low end so i can hear any handling noise...now if only the cable didn't take so much abuse when it gets caught on the ACs walkie as he squeezes by me slating on these tiny sets...

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I have 4 pairs of HD-25's in different states of use.

The earlier Mk1's had steel spring connectors in the earpieces that corroded.

The later Mk2's have gold plated springs

I use De-Oxit if I have problems

mike

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" that stuff Lectro uses, "

Larry from Lectro (aka Lectro Larry) described using a silver bearing grease to lubricate and maximize conductivity on battery caps in another thread on jwsound. do a search, and you may even get a surprise!

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