How can I get the fuse, and the fuse cap of the SWR SM-900 amp?

Do you have a Fender service center? They are the last owners of SWR and just stopped the production recently.

The fuse is easy, the cap is the hard part. 3AG 10 amp fast blow is very common.

 

http://www.digikey.com/product-detail/en/BK/HTB-24I-R/283-2711-ND/954291
http://www.digikey.com/product-detail/en/3AG 10-R/507-1627-ND/1009966

You can select your own country from the site.

 

pm me address and post a pic if possible, i have a couple swr fuse caps, one should match, i'll send it on me if i have a match. and i have the fuse probably too.

 

A fuse holder is a pretty standard part. A tech in you city should be able to find a replacement that will work in South Korea and install it.

http://www.guitar-parts.com/catalog/fender-swr-fuseholder-cap-3ag

As mentioned above by B-string, try digikey.kr and search for a fuse holder and fuse.

 

Mine was cheaper from Digikey

 

The picture is a stock generic, not actual photo. Looks like you need a tall cap like this one http://www.digikey.com/product-detail/en/BK/HTB-46I-R/283-2717-ND/954297.
This is Digikey's part number 283-2717-ND.

 

I don't have any idea how well the two cabs will sound together. They may work well or could cause each other sound problems.

 

Not many Laney products over here so I don't know how good they are or how they sound.

 

Is this it?
http://www.ebay.com/itm/SWR-Bass-Ac...555?pt=LH_DefaultDomain_0&hash=item1e97ea77ab

 

For the fuse holder, I believe that you want Fender part number: 0036702049. You usually have to buy the entire assembly even if you just need the cap. It isn't too expensive though.

There is a difference between the earlier SWR amps and the ones that were made under the Fender name. I don't know if this applies to the fuse holder. If you have a Fender made SM-900, the Fender part, 0036702049, will work. Otherwise, an amp technician can install the entire assembly.