Announcement
Collapse
No announcement yet.
I built smaller, under-wound "Wide Range Humbucker"
Collapse
X
-
I'm not trying to replicate a Fender WRH in the slightest. I've never heard one, so I couldn't even if I wanted to. My goal has been to come up with a pickup that sounds similar to a strat neck pickup (one of my favorites), but cancels hum and fits in a humbucker routing. Everything beyond that is experimental and hopefully some pleasant discoveries.
Honestly, with half of the magnets pulled on each bobbin, it sounds FAR closer to a strat neck pickup than I expected. I'm very happy with the result and currently building a couple more. I'm going to try something a bit different with the bridge pickup, using A4 rods on the bridge side bobbin. The worst thing that happens is I don't like it and try again! :-)
Comment
-
Originally posted by John_H View PostNice work. Have You tried wiring the coils parallel?
Comment
-
Originally posted by Bradley Perry View PostI have not. I wound it lower with the intention of using series only. If wired in parallel it would would have a really low output and, I haven't check the math, but the resonance frequency would probably be too high to hear prominently through a guitar up.
i just wound a humbucking pickup i designed with 43wire with around 10000 turns and a whopping a5 magnet (different design to std humbucker), and you would swear it was a single coil. all reason and measurements would tell you that it would be dark and muddy, but it is bright and chimes just like a singleLast edited by mr fab; 02-21-2015, 07:41 AM.
Comment
-
Cool! What are the specs on this one, then?
I'll ask again (maybe for the engineers to answer): what's going on with the magnetic aperture/profile that allows this 3x3 design to sound like a single coil? What makes this different than one coil having all six screws and the other coil empty? Could it be done with screws every-other string (one coil odd and the other even)? Could a P-ish bass pickup be built similarly?
Comment
-
When you only have one magnetic pole per string the pickup will not pick up double signals, change polarity wise and still have a bit of top en cancelled (very simplified explanation). The pikcup will only "sense" one single part of the string, hence making it very similar to a SC. However the two colts make it humbucking.
There are suppliers (I will not mention GFS) that sell a standard HB with two rows of screw poles, no slugs and the poles configures 3+3 as a valid substitute for a WRHB. They have a distinctively more SC-ish sound although they are nowhere close to a real vintage WRHB
Comment
-
Originally posted by Jason Rodgers View PostCool! What are the specs on this one, then?
I'll ask again (maybe for the engineers to answer): what's going on with the magnetic aperture/profile that allows this 3x3 design to sound like a single coil? What makes this different than one coil having all six screws and the other coil empty? Could it be done with screws every-other string (one coil odd and the other even)? Could a P-ish bass pickup be built similarly?
The steel in the coil affects the sensitivity to magnetic fields; therefore keep it the same in both for best hum cancelation.
There is a test you can do. Expose a hum bucker to a strong magnetic hum source. Listen. Remove the screws one at a time. You should hear the hum increase as each screw comes out. (Obviously electrostatic hum must be small for the effect to be noticeable, so use a careful set up.)
[
This test upsets some people. The long process that resulted in my removal from the Musical Instrument Makers Forum started when I described this test, and the head of the electronics discussion there disagreed. I, of course, did not back down.
]
Comment
-
With the 3 & 3 threaded magnet setup, it would be similar electrically to a P-Bass Pickup set.
The difference would be the guitar pickup uses two long bobbins, the P-Bass two short ones.
Both only one sensing magnet per string.
T"If Hitler invaded Hell, I would make at least a favourable reference of the Devil in the House of Commons." Winston Churchill
Terry
Comment
-
Originally posted by Bradley Perry View PostI'm not trying to replicate a Fender WRH in the slightest. I've never heard one, so I couldn't even if I wanted to. My goal has been to come up with a pickup that sounds similar to a strat neck pickup (one of my favorites), but cancels hum and fits in a humbucker routing. Everything beyond that is experimental and hopefully some pleasant discoveries.
Honestly, with half of the magnets pulled on each bobbin, it sounds FAR closer to a strat neck pickup than I expected. I'm very happy with the result and currently building a couple more. I'm going to try something a bit different with the bridge pickup, using A4 rods on the bridge side bobbin. The worst thing that happens is I don't like it and try again! :-)
Comment
-
Originally posted by Jason Rodgers View PostCool! What are the specs on this one, then?
I'll ask again (maybe for the engineers to answer): what's going on with the magnetic aperture/profile that allows this 3x3 design to sound like a single coil? What makes this different than one coil having all six screws and the other coil empty? Could it be done with screws every-other string (one coil odd and the other even)? Could a P-ish bass pickup be built similarly?
The poles on this one would just be seeing the the string in different places. I've never tried this, so I have no idea how much different it would be than just pulling the screws out of a regular HB.
Looks pretty cool though.
Comment
-
Originally posted by Jason Rodgers View PostCool! What are the specs on this one, then?
Inductance: 2.36K
Capacitance: Tough to measure with what gear I have, but through my meter it reads almost identical to my Fender American standard Strat neck pickup compared to the value I get through some PAF style humbuckers I tested.
The coil on with the treble pole pieces is slightly higher wound than the lower poled bobbin.
I also have larger screws holding the baseplate to the bobbins to increase inductance without increasing resistance or capacitance...because I'm going more for a strat neck pickup style of sound.
There is also a high iron content steel bar where the typical humbucker bar magnet would be. This, also, is to increase inductance.
It looks like a full range, but it most definitely is not one!
Originally posted by big_teee View PostWith the 3 & 3 threaded magnet setup, it would be similar electrically to a P-Bass Pickup set.
The difference would be the guitar pickup uses two long bobbins, the P-Bass two short ones.
Both only one sensing magnet per string.
T
Comment
-
Hey Brad:
Where do you get the cover and baseplate for this last one you made?
Also by using the 3-3, you save 6 of the high dollar threaded pole pieces.
TLast edited by big_teee; 02-26-2015, 07:42 PM."If Hitler invaded Hell, I would make at least a favourable reference of the Devil in the House of Commons." Winston Churchill
Terry
Comment
-
Originally posted by big_teee View PostWhere do you get the cover and baseplate for this last on you made?
The cover is from Philadelphia Luther Supply. They are the only place I found with 3+3 covers, and they have a good selection of finishes. Its a good thing, because I didn't want to have to find tools and spend the time drilling holes myself. Only in 49.2mm though.
Both are 49.2mm spacing.
Originally posted by big_teee View PostAlso by using the 3-3, you save 6 of the high dollar threaded pole pieces.
Comment
Comment