Jump to content
Gibson Brands Forums
Sign in to follow this  
PerKramer

DMZ 4001

Recommended Posts

Hej from Denmark

 

I have an DMZ 4001 Bass (A3267 - 1980 I guess), which have a fault in the tonepot (BQ6435 - 1378013)

Can anybody tell me how to get af new one, or an opinion on an alternative tonepot. I'm very concerned about the basstone - it is realy amazing as it is.

 

Regards Per

Share this post


Link to post
Share on other sites

Hello Per,

 

when looking at pics of Kramer DMZ 4001 on the web, it seems to be an all-passive bass without a battery - is that right?

 

In this case, my guess is that the tone pot is a common 500 kOhms or perhaps a 250 kOhms one, audio taper in either case. These are standard parts and should be avaialable at good musical instrument dealers. It should be possible to find a spare part where sizes and shaft will match your bass.

Share this post


Link to post
Share on other sites

Hello Per,

 

when looking at pics of Kramer DMZ 4001 on the web, it seems to be an all-passive bass without a battery - is that right?

 

In this case, my guess is that the tone pot is a common 500 kOhms or perhaps a 250 kOhms one, audio taper in either case. These are standard parts and should be avaialable at good musical instrument dealers. It should be possible to find a spare part where sizes and shaft will match your bass.

 

Here is 2 pics, as you can see, it has a battery and... so maybe it's not a 4001?

Share this post


Link to post
Share on other sites

Could it be that the controls are passive with a subsequent line driver? That would mean the pot should be as I mentioned above.

Share this post


Link to post
Share on other sites

post-70979-081842200 1425549414_thumb.jpg

Could it be that the controls are passive with a subsequent line driver? That would mean the pot should be as I mentioned above.

I'm not much into electronics.

Here comes a better photo of the wiring.

There are two swiches. one that changes the tone (3 settings) and one with two settings, that I think is a kind of boost.

Share this post


Link to post
Share on other sites

Is the switch with six tags the one with two positions? To me it looks as if it switches the pickup split coils between series and parallel. The switch with three tags should have three positions then...

Share this post


Link to post
Share on other sites

Is the switch with six tags the one with two positions? To me it looks as if it switches the pickup split coils between series and parallel. The switch with three tags should have three positions then...

 

Yes, the switch with six tags is the one with two positions. Changing the position results in a relative big change in volume. The high volume position also gives a feeling of a slightly brighter tone, or maybe it just come from the higher output.

 

And yes, the switch with three tags have the three positions.

Share this post


Link to post
Share on other sites

What still makes me wonder is the resistor between hot and centre legs of the volume pot. Perhaps for creating more of a linear instead of the audio taper? [confused]

Share this post


Link to post
Share on other sites

What still makes me wonder is the resistor between hot and centre legs of the volume pot. Perhaps for creating more of a linear instead of the audio taper? [confused]

 

Can't help you there.

Share this post


Link to post
Share on other sites

Can't help you there.

The colour rings of the resistor seem to be brown - black - orange - gold. Is that correct? That would mean 10 kOhms +/- 5 %.

Share this post


Link to post
Share on other sites

The colour rings of the resistor seem to be brown - black - orange - gold. Is that correct? That would mean 10 kOhms +/- 5 %.

I'm at work (with my labtop), need to check colors at home.

Share this post


Link to post
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

Loading...
Sign in to follow this  

×
×
  • Create New...