Mag swappers advice for Seth Lover bridge

davesowden

New member
I am waiting on delivery of a Dimarzio 36th anniversary dp103 neck paf and i,m thinking of pairing it with a Seth Lover bridge i have spare. It seems on paper it could be a great combo but i was wondering what results i would get from swapping the mag in the Seth for an A5 to match the mag in the Dimarzio? Is there another good Seth L mag swap?
 
Re: Mag swappers advice for Seth Lover bridge

I haven't done it, but if I did, a fully charged roughcast A5 would be my first try.

Roughcast magnets have a very slightly rounded off high end.
 
Re: Mag swappers advice for Seth Lover bridge

yes its a rough cast A5 from addiction FX that i was planning on using.
 
Re: Mag swappers advice for Seth Lover bridge

From my experience, depending on the desired outcome, the Seth bridge can take A8, A5, A4 and UOA5 wonderfully.

HTH,
 
Re: Mag swappers advice for Seth Lover bridge

I think that's one I might leave be. I think the "on paper" results for the stock Seth are going to be pretty good paired with that DMZ pickup.

Bill
 
Re: Mag swappers advice for Seth Lover bridge

I think that's one I might leave be. I think the "on paper" results for the stock Seth are going to be pretty good paired with that DMZ pickup.

Bill

+1. Try it first, then think about mag swaps. My first one would be an UOA5.

BTW, you get no extra points for matching mags in the bridge and neck. Two entirely different EQ's in those slots. One is inherently dark & bassy, the other bright and sharp. Using the same mag will push both in the same direction EQ-wise, and depending on the winding, that may help one PU and hurt the other. To make the two PU's a better match tone-wise, I use warmer mags, warmer pots, or both in my bridge PU's.
 
Re: Mag swappers advice for Seth Lover bridge

thanks for the responses-BLUEMAN by warmer pots do you mean 250k/300k and which mags do you find warmer?
 
Re: Mag swappers advice for Seth Lover bridge

thanks for the responses-BLUEMAN by warmer pots do you mean 250k/300k and which mags do you find warmer?

Right, 250/300K pots are warmer than 500K's, they bleed off some of the excess treble to ground.

Warm mags would be (starting with the warmer ones first): RC A2, A2, UOA5, A6, A8, RC A4, & A4. Unoriented mags are warmer than the same mag that's oriented (UOA5 vs A5), and roughcast mags are slight warmer and smoother than polished (RC A5 vs A5).

If you need to take off a little treble or harshness in an A5 PU, try a RC A5. If you need to take off a lot, go with an UOA5.

The ones with the most dynamics are A2's (polished or RC) and UOA5's.
 
Re: Mag swappers advice for Seth Lover bridge

excuse my ignorance but can you explain-unoriented? what is the difference to rough cast?
 
Re: Mag swappers advice for Seth Lover bridge

excuse my ignorance but can you explain-unoriented? what is the difference to rough cast?

Roughcast mags are lumpy with sand indentations, truly ugly mags, but that gives them a slightly more varied magnetic field, which sounds particularly nice in a bridge HB or P-90. Smoothes out the highs and takes off any harshness. Once they polish a magnet (and almost all guitar mags are polished), it tends to have a sharper high end, and that's very good in a neck PU.

Normally magnets have their internal 'grain' aligned in one direction when the metal is being formed, and that gives them a stronger magnetic field. Unoriented magnets still have their 'grain' in random directions, which produces a much more complex magnetic field. They still have a north/south like any mag.

In A5's, a polished, oriented A5 has a lot of treble and bass, a sharp high end, and scooped mids. A RC A5 is a little smoother on top. An UOA5 is much warmer, has more mids, and has more dynamics and response. It sounds like a cross between an A2 and an A5, with the best of both.

All A2's, A3's, and A4's are unoriented. We're fortunate to have a source for UOA5's, which are hard to find. So, we have about 10 types of alnico mags available from Addiction FX, so we can fine tune our tones much better than we ever have been able to before.
 
Last edited:
Re: Mag swappers advice for Seth Lover bridge

I've put an UO A5 into a Seth bridge that was too middy in a Flying V, and it worked pretty well. Ultimately, it's not what I'm really looking for, so I think I might but the Seth neck back into the bridge position, but that's a different story.

As for pots, I wired up a few different push-pulls so that I could switch between 250k & 500k. It had no discernable effect on tone (Artietoo had similar results -- see our thread from a week or two ago).
 
Re: Mag swappers advice for Seth Lover bridge

Very even. I bought this guitar with the Seth Lover in the bridge, it was only when I went to swap out the stock neck pickup (yuck!) that I realized that it was a Seth Neck model that was in the bridge.

First, I'll compare the uncovered SethN in the bridge of my Flying V, then I'll compare my experiences with the Seth bridge in various guitars. As you'll see, my comments might be very V specific.

The uncovered Seth Neck sounds very even. It has some brightness without being shrill. Very versatile, with each note standing out. It could do a less-middy version of "Just Got Paid" (see below) and "Hot for Teacher" with ease. At times it could get a little bit of single-coil clang. Anytime there was too much treble, it was easy to dial back with the tone control. The only reason I wanted to try something else was that I wanted something a tad hotter and with slightly less highs, which is why I dug out the Seth bridge.

http://www.youtube.com/watch?v=6c7d8BYJy8I

The SethN is less middy and more even than below, but with the same underlying flavor:

http://www.youtube.com/watch?v=mkBCvITuyv4

I bought the Seth bridge years ago for my SG and hated it. It was very bright and a step backwards from the 490t in that guitar. Keep in mind that the bridge pickup in an SG is a lot closer to the bridge compared to an LP or V. In addition, the body is thinner, so SGs tend to have thinner tones than LPs or Vs. A few years later, just for kicks, I threw it into a hardtail swampash strat I was building. Yuck. Bright, thin, and no body.

So how was it in my V? At first I thought it was dark, yet clanky. So I took the pickup covers off. It made the pickup brighter, yet got rid of some of the single coil 'klank' that I can hear in the video below when the covers are on:

http://www.youtube.com/watch?v=Ga-P4pfVdj4&playnext=1&list=PL61374A83835D3B5B

I liked the uncovered Seth bridge a lot better, but compared to the neck model, it was too middy! The V has a nature mid-hump, the Seth bridge has a natural mid hump, and the mixture was a bit too much for me (but might be perfect for someone else). The bass also seemed flubbier than when I had used the neck model in the same position. I preferred the neck model.

I next tried an unoriented A5 in the bridge. This sounds pretty good, and might be a keeper, but the A2 Seth neck might be closer to what I'm looking for. For what it's worth, the UO A5 Seth bridge sounds a lot like this:

http://www.youtube.com/watch?v=dd-q-F0tat0

For kicks I threw in a ceramic magnet. Truth be told the basic tone is excellent, and reminds me a lot of the Custom! But, this is some underlying harshness and nastyness in the background that sounds too unrefined. My guess is that you really need a Custom wind to smooth that out.

For what it's worth, I'm running the uncovered Seth neck with an A3 in the neck position. The A2 sounded very good, but it really wasn't what I was looking for in a neck pickup. I have an A2pro on order. I figure I'll probably end up with the A2 SethN or A5 Seth bridge in the bridge, and the A3 Seth neck or some A2pro variant in the neck.

The final thing I'm going to do is to rewire the controls. Stock is two volumes and 1 tone, but I really don't need 2 volumes nor do I need the tone to affect both pickups. I'm going to change it to master volume, bridge tone, and neck bass-cut.
 
Back
Top