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For Sale: Spare Driver for Sennheiser HD540 Reference

post #1 of 4
Thread Starter 
This Classified is Closed

For Sale:
Spare Driver for Sennheiser HD540 Reference

Will Ship To: USA

If you've got a Sennheiser HD540 with one bum driver, I've got what you need to bring it back to life. For sale is one spare 300 ohm driver assembly for Sennheiser HD540 Reference headphones.

 

Includes the driver, earcup shell, driver shield (white part), and thin piece of foam on the backside between the driver and shell. Earpad is NOT included, nor is the thin black foam that goes between the driver shield and the earpad. (What you see in the pictures is what you get.) The outer housing shows minor wear marks as can be expected for an item of this vintage.

 

This driver assembly is for the "HD540 Reference", not the "HD540 Reference II".

 

I've disassembled and cleaned the parts, and tested the driver. I guarantee that it works. Just pop on an earpad, snap it onto your headband, and plug in the cable.

 

Please be certain that the driver you plan to mate it with is 300 ohm (not 600 ohm like some of the HD540 units). If your HD540 doesn't have the ohm value stamped on the outer shell (as shown in picture), you can also find it in tiny numerals at the outer edge of the black frame that's visible when you remove the earpad.

 

Price is $25, plus $5 shipping in USA.


Edited by Bostonears - 4/3/13 at 6:55pm
post #2 of 4

Hey,

Mine are still working beautifully, which I bought from you.  What are the chances that I'll need a replacement driver?

 

I had a pair of 420SL (600Ohm), and one driver went after years of using it to watch TV.  It's sad to see a good headphone die like this.

post #3 of 4
Thread Starter 
Originally Posted by 2-i View Post

Hey,

Mine are still working beautifully, which I bought from you.  What are the chances that I'll need a replacement driver?

 

I had a pair of 420SL (600Ohm), and one driver went after years of using it to watch TV.  It's sad to see a good headphone die like this.

The great thing about vintage Sennheisers like these is that they were designed to be easily disassembled so that parts can be swapped or replaced.

 

I've owned five or six pairs of these headphones over 20 years, and I've had two drivers die. The weak link is the hair-thin copper wires that connect the cable socket to the voice coil. Essentially, they're the same wire as the voice coil itself. If one of those wires breaks, it's virtually impossible to solder it back together.

 

The picture below shows a disassembled HD540 II driver (not the HD540 driver for sale here, so it looks a little different). You can see how tiny the wires are between the cable socket and the driver element.

 

 

 

 

 

 

post #4 of 4

That is a beautiful driver. I've noticed that the HD540's incorporate the driver into the whole frame while in some other models the drivers can be removed from the baffle.  All Senn's have long lead wires to the hookup posts and springs, and yes they are very delicate.  I would not dare to solder a cable directly to those.

 

Having the plugs is a good solution - no soldering to the delicate conductors, and no danger of pulling the wires out.  The bad thing was it gave rise to expensive aftermarket cables.  :)

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