StewMac tools

Quick question re. lipstick tube pickups

Pickups, magnets, microphones, amps, speakers, cabs, whatever...

Quick question re. lipstick tube pickups

Postby Bob Francis » Sun May 21, 2017 9:54 pm

I have an electric upright that needs some bling.
Can I install 4 lipstick in line with the strings? They would be parallel to the strings and each other.
Bob Francis
 
Posts: 343
Joined: Wed Jan 11, 2012 6:28 pm

Re: Quick question re. lipstick tube pickups

Postby Brian Evans » Mon May 22, 2017 12:29 pm

I can't think of why it wouldn't work, but you can easily get one pickup, wire a jack on to it and see if you get a good response from it parallel to the string. You would need to experiment with series/parallel wiring, keep track of phase, and play with volume pot impedance to get your tone where you want it. You probably know that a high (1 meg) pot bleeds off fewer high frequencies and sounds a lot brighter than the same pickup with a low 100K - 250K pot, and having four pickups with play with that a bit.
Brian Evans
 
Posts: 525
Joined: Sat Aug 30, 2014 8:26 am
Location: Tatamagouche, Nova Scotia

Re: Quick question re. lipstick tube pickups

Postby Bob Francis » Mon May 22, 2017 3:05 pm

Thanks Brian!
I had convinced myself that in-line with the string was not functional.
Follow pics when I get it.
Bob Francis
 
Posts: 343
Joined: Wed Jan 11, 2012 6:28 pm

Re: Quick question re. lipstick tube pickups

Postby Jason Rodgers » Tue May 23, 2017 4:19 pm

I'm guessing Mr. King will have the correct answer, but will arco or pizz double bass strings have enough ferric content to be sensed by the pickups?
-Ruining perfectly good wood, one day at a time.
Jason Rodgers
 
Posts: 1543
Joined: Fri Jan 06, 2012 4:05 pm
Location: Portland, OR

Re: Quick question re. lipstick tube pickups

Postby Bob Francis » Tue May 23, 2017 7:55 pm

Jason Rodgers wrote:I'm guessing Mr. King will have the correct answer, but will arco or pizz double bass strings have enough ferric content to be sensed by the pickups?

Good point. I bought these strings from Gollihur music with their recommendation for mag pickups.
Bob Francis
 
Posts: 343
Joined: Wed Jan 11, 2012 6:28 pm

Re: Quick question re. lipstick tube pickups

Postby Brian Evans » Wed May 24, 2017 7:58 am

Trivia - Ampeg's first product, and the name of the company, was their pickup system for acoustic double bass - a contact microphone in the peg of the instrument. Hence "amp-peg".
Brian Evans
 
Posts: 525
Joined: Sat Aug 30, 2014 8:26 am
Location: Tatamagouche, Nova Scotia

Re: Quick question re. lipstick tube pickups

Postby Bob Francis » Wed May 24, 2017 2:22 pm

Just a quick edit Jason.
I really just want this for Pizz no bows. But I could pop a piezo on the bridge. . . hmmmmm
Bob Francis
 
Posts: 343
Joined: Wed Jan 11, 2012 6:28 pm

Re: Quick question re. lipstick tube pickups

Postby David King » Fri May 26, 2017 1:16 pm

I think it should work but I've never tried it. I don't actually know how the lipstick magnets are magnetized in terms of where the poles are. I'd assume that the North or South pole is facing the strings so the orientation of the tube under the string shouldn't matter. With 4 lipsticks you may end up with 4 times as much noise unless you can reverse the phase of two of them to achieve common mode rejection i.e. humbucking. Since you are picking up four unique signals you shouldn't need to worry about magnetic phase reversal -no one will know that the strings are out of phase with each other, all you need to do is reverse the hot and ground leads of two of the pickups.
That said lipstick tube pickups aren't terribly efficient and they may be quite insensitive at the distance from the strings that an EUB might require. I'd definitely follow the advice above of trying one first. The sensitivity of a pickup at a distance is dependent on the depth of the magnet, the deeper the magnet the further it can project it's field lines above.
David King
 
Posts: 2303
Joined: Sat Jan 07, 2012 10:01 pm
Location: Portland, OR

Re: Quick question re. lipstick tube pickups

Postby Bob Francis » Sun May 28, 2017 11:18 am

Thanks guys!
Will try a couple combinations on a temporary jig and post results.


1
Bob Francis
 
Posts: 343
Joined: Wed Jan 11, 2012 6:28 pm

Re: Quick question re. lipstick tube pickups

Postby Beate Ritzert » Sun May 28, 2017 3:52 pm

David King wrote:That said lipstick tube pickups aren't terribly efficient and they may be quite insensitive at the distance from the strings that an EUB might require. I'd definitely follow the advice above of trying one first. The sensitivity of a pickup at a distance is dependent on the depth of the magnet, the deeper the magnet the further it can project it's field lines above.


If i did something like this i would do 4 individual pickups - a coil around a large rod magnet - and wire them pairwise as humbuckers.

Here You see a few solutions on one of the earliest EUBs - the Framus (AFAIK there was at least one other model even before WW2). This bass has a magnetic pickup, and they changed it through the really long production time of the instrument: http://www.framus-vintage.de/modules/mo ... ID=9&cl=DE
User avatar
Beate Ritzert
 
Posts: 412
Joined: Thu Aug 02, 2012 8:20 am
Location: Germany

Re: Quick question re. lipstick tube pickups

Postby Bob Francis » Mon May 29, 2017 8:46 pm

Understand the distance issue!
I think I'm going to try Beate's suggestion on their hookup.
I built it with the normal overstand of an upright.
Will advise. . .
Bob Francis
 
Posts: 343
Joined: Wed Jan 11, 2012 6:28 pm

Re: Quick question re. lipstick tube pickups

Postby David King » Tue May 30, 2017 9:32 am

Beate,
those Framus instruments are so cool, thanks for bringing them to our attention. I just wish the photos were a bit bigger with more detail.

Bob,
Your simplest approach would be a standard precision bass pickup under the strings which would allow you complete control of the volume from each string by adjust the angle of each pickup. The P pickup is one of the most efficient and can handle wide string excursions. You could also try your hand at winding single pole pickups as some of the Framus basses are showing. These are extremely easy to fabricate with a rod magnet, a couple of fiber or nylon washers and 10,000 turns or so of 42AWG magnet wire. You don't need to count the turns just wind them on a drill with a known RPM for a set period of time.
David King
 
Posts: 2303
Joined: Sat Jan 07, 2012 10:01 pm
Location: Portland, OR

Re: Quick question re. lipstick tube pickups

Postby Beate Ritzert » Tue May 30, 2017 5:26 pm

David King wrote:Beate,
those Framus instruments are so cool, thanks for bringing them to our attention. I just wish the photos were a bit bigger with more detail.


I found a few more on a site where i did not expect them (a japanese collector of German archtops, showing an image of the antetype of my problem child guitar): http://jazzgitarren.k-server.org/framus.html - please scroll down a bit.
User avatar
Beate Ritzert
 
Posts: 412
Joined: Thu Aug 02, 2012 8:20 am
Location: Germany

Re: Quick question re. lipstick tube pickups

Postby Bob Francis » Tue May 30, 2017 8:22 pm

Those are great photos!
Bob Francis
 
Posts: 343
Joined: Wed Jan 11, 2012 6:28 pm


Return to Electronics

Who is online

Users browsing this forum: No registered users and 2 guests

Your purchase from these sites helps support the MIMForum, but only if you start at the links below!!!
Amazon music     Amazon books     Amazon tools     Rockler tools     Office Depot    

The MIMF is a member-supported forum, please consider supporting us with a donation, thanks!
 • Book store • Tool store • Links •