Jump to content
Why become a member? ×

hartke unlabelled buttons


steve-bbb
 Share

Recommended Posts

just in case anyone was wondering about the unlabelled buttons on the back of the hartke heads



email reply from samsontech.com support

The upper switch is a ground lift, so if you're getting a 60 Hz hum from a ground loop, pressing the switch should help eliminate the problem. The lower button is a Pre/Post switch so you can choose to send your signal with or without EQ to a mixer. Pushing the switch in sends a post-EQ signal out.

The frequency cut off of the HPF is at around 30Hz, and is designed mainly to protect your woofers from blowing out from lower frequencies. The slope is about 6-8dB/octave depending on the amp.

Link to comment
Share on other sites

[quote name='steve-bbb' timestamp='1347626719' post='1803243']
just in case anyone was wondering about the unlabelled buttons on the back of the hartke heads

[...]

The lower button is a Pre/Post switch so you can choose to send your signal with or without EQ to a mixer. Pushing the switch in sends a post-EQ signal out.

[/quote]

I think the pre/post is t'other way around - with the button pushed in, it's pre.

Edited by barkin
Link to comment
Share on other sites

Well, that's a bit crap! Image seems to have shrunk when I attached it...

[url="http://www.ebay.com/itm/Hartke-HA2500-Bass-Guitar-Amplifier-Head-10-Band-Graphic-EQ-HA-2500-/280652262707"]http://www.ebay.com/...0-/280652262707[/url] appears to show it the other way about to the image above ! So that's one (the blurry one above - sorry) showing in/pre, while the one on ebay is in/post.

So what's what on the unmarked ones is "suck it and see", I guess.

Edited by barkin
Link to comment
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.

Guest
Reply to this topic...

×   Pasted as rich text.   Restore formatting

  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.

 Share

  • Recently Browsing   0 members

    • No registered users viewing this page.
×
×
  • Create New...