Nigel -

 

The differences between MK1 ad MK2 are much easier to identify than serial (product) numbers 

 

MK1 has an RCA line level input on the back in addition to powerlink, MK2 does not, it's powerlink only.

MK1 has the illuminated power switch on the front of the cabinet (red/green) MK2 is a light only, not a switch.

 

MK1 is type 6638

MK2 is type 6644

The product number is on the front of the speaker behind the grill (fret) beneath the woofer.

 

Also keep in mind that MK1 is a traditional class A/B bower amp whereas MK2 is class D Icepower

 

Greg

Hi Nigel,

My advice would be...if you can just get them from a reputable pre owned B&O company, like lifestyle av or morethanav etc in the UK. You then get a warranty and peace of mind that they have been given the once over. With added bonus of not paying much more for 4000's, if anything. That's what I did for my 4000's.

I think lifestyle av do sell through eBay, but just get in touch.

Hi

MK1 all day long :)

For me MK1 it's way better than MK2.

Why ...RCA line out, switch if you want to cut power, nice soft soud!

Drivers are the seme.

And repair cost of MK1 are low.

Used MK1 are half the price of MK2.

 

 

 

Thanks guys, but you haven't really answered my questions!

I've done a bit of digging since i first posted my questions and have found the following

Serial number 13789500 had the black stuff that turns to glop.

Serial number 18947009 had the white foam.

Both of these are Mk1. Both type 6637

So, they changed the foam before the Mk2s came along.

It would appear that the best type to go for are MK1s because of the price & sound, but with the white foam  

There must be a specific point in the serial number sequence where they changed the type of foam used!

 

Cheers

Nigel 

 

 

serial no 13...14 ...have black foam...that go's to glop :)

Serial 18... have white ...

price is the same or minimal differnece.

Yes ..both are MK1

 

 

Somewhere around 15 or 16 new white foam has been used. 

The same counts for the BL8000.

Beobuddy wrote:

Somewhere around 15 or 16 new white foam has been used.

The same counts for the BL8000.

I have four BL4000 of the 14xxxx serial. Before this thread I was unaware of whether to open them in order to remove the foam. Now, I have a new project.

Thanks!

Quick way of checking is just remove the 2 screws that hold the tweeter in place and lift it up -  you can see what colour the foam is.

Cheers 

Nigel

h1npw wrote:

Quick way of checking is just remove the 2 screws that hold the tweeter in place and lift it up - you can see what colour the foam is.

Cheers

Nigel

Thanks, Nigel. Do you have any foam removal experience?

Opinions seem to vary on whether its is necessary to replace the foam.