Senn. 650 driver mod.

[Mikey01]

I had my Senn 650's appart for recableing last night. I took the driver out only to see two (+ and-) 74ga. (estimate) ultra fine hair like wireing. I was wondering if anybodt has trenched into the hermetically sealed black plastic houseing that the wires go into and on into the actual driver and replaced them with something more substancial? I was thinking my Dremmel tool and the circular saw blade for it could do the trenching to expose the rest of the wires and where they connect. It's in my mind that to have a 3/4 in. garden hose for 50 ft. and then reduceing it to a 1/4 in. dia. for the last foot would not let you make any or full use of the longer run of the 3/4 in. garden hose, as an example, and woulden't let much water through. Same here, only in a current. Was anybody brave enough to try to rectify this? And also, any other thoughts anyone has???

 

[Nak Man]

I'll bite. Maybe you should look at it the other way around - current flow to drive those membranes requires only as big as that 74ga wire, making that garden hose an overkill in the first place. Otherwise we would need thick wires to make up good voice coil as well. =)

 

[HiGHFLYiN9]

Lol, even the mere thought of 74 gauge wiring scrares me. All you'd have to do is look at it and it would snap in half.

Personally I'd guess the Senn diaphram wire is somewhere in the upper 30s. I haven't stumbled upon anyone replacing that thin wire, my guess is that doing something like that would change the balance of the sound drastically, not to mention risk burning out the drivers. You may want to message Xanadu to see if he's tried it.

 

[Mikey01]

Aw, shucks. I was gonna weld in some 14ga.

 

[Garbz]

there may not even be a connection inside. Has anyone actually looked in there? My guess is that wire runs directly around the voice coil or at least there won't be any handy soldier tabs to make the connection.

 

[gsferrari]

I doubt the slender wire is the voice coil...it could be but that is highly unlikely.

As for wire thickness - ever hear of "skin-effect" ??

 

[Mikey01]

Quote:

Originally Posted by Garbz there may not even be a connection inside. Has anyone actually looked in there? My guess is that wire runs directly around the voice coil or at least there won't be any handy soldier tabs to make the connection.

Times like this I wish I had an X-ray unit like Kevin Gilmore.

 

[setmenu]

I have a senn transducer from some model or other and the wire that connect to those spring clips are extensions of the voice coil.
I would be very surprised if the 650 transducers follow a different practice.
Attaching a small length of different wire to bridge the gap between the perimeter of the transducer and the clips would would add needless complexity and expense to the manufacturing process for no benefit.


Setmenu

 

[Mikey01]

Well, alrighty then. Thanks for the info Quote:

Originally Posted by setmenu I have a senn transducer from some model or other and the wire that connect to those spring clips are extensions of the voice coil. I would be very surprised if the 650 transducers follow a different practice. Attaching a small length of different wire to bridge the gap between the perimeter of the transducer and the clips would would add needless complexity and expense to the manufacturing process for no benefit. Setmenu

 

[Born2bwire]

Quote:

Originally Posted by Mikey01 I had my Senn 650's appart for recableing last night. I took the driver out only to see two (+ and-) 74ga. (estimate) ultra fine hair like wireing. It's in my mind that to have a 3/4 in. garden hose for 50 ft. and then reduceing it to a 1/4 in. dia. for the last foot would not let you make any or full use of the longer run of the 3/4 in. garden hose, as an example, and woulden't let much water through. Same here, only in a current. Was anybody brave enough to try to rectify this? And also, any other thoughts anyone has???

For the most part, this shouldn't be of any concern. The skin depth for audio waves on copper is rather large. If they use a very very thin wire for a run on the order of inches, I doubt that it would have any significant effects. Now if they did that for a run of a couple of feet, then I'd wonder. I'm not too sure what and where you're talking about but if it's lying on the parts that move the diaphragm, then I would think that a small wire was necessary to decrease weight and that if you were to add a thicker, and thus heavier wire), you may adversely alter the characteristics of the driver.