1. Dingbat
  2. Ask Sheldon
  3. Monday, 07 April 2008
  4.  Subscribe via email
Was there an official announcement about the Mach II 4L pickup? I guess I haven't been paying attention. I've been trying to gather what I can from other threads.

I bought "regular" Mach IIs for my ABII and my Super J as soon as they came out. Now I hear about this 4L version that can be switched between Mach II and the old FD3. Bummer. Even when I got the Mach IIs I wished I could have both.

From what I've read from other members, the Mach II is exactly the same as the FD3 except that the coils are wired in series instead of parallel. Is that the whole story?

What's the price of a 4L and is there a 4L version available for the Super J?
Comment
There are no comments made yet.
John H. Accepted Answer Pending Moderation
Registered
0
Votes
Undo
I know what you mean about pups out of phase sucking all the bass away. I put one of my ABII pups out of phase with the other just for kicks one day...thin, tinny...not good. At least it's obvious in case there's any question after doing an install.

I've never had a Peavey T-40. That's an interesting wiring scheme with the vol pot also doubling as sc/hb switching. It may be possible to wire it to get series/par plus the sc/hb switching, but it would take at least a little thought and custom work.
Comment
There are no comments made yet.
  1. more than a month ago
  2. Ask Sheldon
  3. # 1
Dingbat Accepted Answer Pending Moderation
Registered
0
Votes
Undo
Thanks John.

I don't get much noise from my wiring scheme either. I was just wondering if your way had any advantage.

I did get two sheets with the 4L. One for the pickup and one for the selector knob. Each sheet shows pre and post 2007 colour coding.

The post 2007 colour coding did not work for me. I think it's because I was combining a 2005 FD3 with a 2009 FD3-4L. It was not a big deal. I just swapped the leads around. All the pickup combinations now work in phase.

Coincidentally, I just bought a 1979 Peavey T-40 in a pawn shop. It needed new switches. A phase switch is actually part of the original design. It's silly, really, because it just sucks away all the bass.

I was going to covert it to a series/parallel switch but I couldn't figure out how to keep one of the other original features. The T-40 has two humbuckers that can be switched to single coil through the tone pot. Below 7 on the tone knobs, the pickup is dual coil, above 7, it's single coil. I'm not wild about the idea but it's unique so I'll keep the whole set-up as original.
Comment
There are no comments made yet.
  1. more than a month ago
  2. Ask Sheldon
  3. # 2
John H. Accepted Answer Pending Moderation
Registered
0
Votes
Undo
Hi Dingbat,

Yes, the configuration of the jumper can be different depending on how the rest of the poles are wired. If it works, then no issues. I don't get any noise when I flip the switch, however.

As to the color coding on the diagram in this thread, word to the wise: the newer FD-3 4Ls have a different color coding than this diagram displays. When anybody gets a new pup from Jeff/Sheldon, they'll provide the updated schematic.

John
Comment
There are no comments made yet.
  1. more than a month ago
  2. Ask Sheldon
  3. # 3
Dingbat Accepted Answer Pending Moderation
Registered
0
Votes
Undo
I finally did the 4L mod on my 2006 AB1 six-string. My bass had a set of the original non-Mach II pickups. I bought a 4L for the bridge and replaced the bluEQube with a series/parallel switch.

The upgrade is definitely worth it. The sound is more aggressive, like an ABII but without the dark wood sound. I also get to keep the original sound of the AB1. It's great.

Now I want to do this on the neck pickup as well as on both pickups of my ABII5 but I'm waiting for the "enhanced p-bass" neck FD3 that Sheldon mentioned in a recent poll.
(http://www.dingwallguitars.com/forum/vi ... ch&start=0)

I found that the wire polarities were reversed compared to the supplied chart and to the non-Mach II neck pickup on my bass. So, if anybody else is going to do this mod, be sure to test the sound before you do the soldering.

I forgot that John H had posted a series/parallel switch wiring diagram here when I did my mod so I just referred to a past mod that did on my Fender P-bass.

John, your wiring is different from mine. I have the jumper go straight across one of the end pairs of terminals. Does your diagonal jumper going to one of the centre terminals help to reduce noise when the switch is flicked? Does it make a difference?
Comment
There are no comments made yet.
  1. more than a month ago
  2. Ask Sheldon
  3. # 4
John H. Accepted Answer Pending Moderation
Registered
0
Votes
Undo
Here's a wiring diagram for series/parallel switching of a 4L pickup with a double pole/double throw switch (the same switch already used for pre amp and bluEQube switching). It is probably simpler to remove the bluEQube and pre switch (on basses so equipped) as a unit and get two (or one) new switches (Sheldon can supply these along with the pickup(s)). One new switch for the pre and the other for the pickup.

To hardwire a 4L for series (and thereby making a MachII), solder the black and red leads together.

A bit more info w/ some pics can be found here, even though I made my install more complicated than need be: http://www.dingwallguitars.com/forum/vi ... .php?t=880
Attachments (1)
Comment
There are no comments made yet.
  1. more than a month ago
  2. Ask Sheldon
  3. # 5
evilgus Accepted Answer Pending Moderation
Registered
0
Votes
Undo
Thanks John, some good info. Will give it a few more rehearsals and decide if I really need to mod it at all, even the stock sound with a good bit of bass/treble boost is pretty fat! :)

EG
Comment
There are no comments made yet.
  1. more than a month ago
  2. Ask Sheldon
  3. # 6
reddavid Accepted Answer Pending Moderation
Registered
0
Votes
Undo
Hi John,

The 2 switchable Mach II's sound like a wonderful setup. I like the idea of the fixed bridge in series and using the toggle switch for the neck pup.

If I can snag the blue AB I fretless 6-string, that would be my plan!

Did you do the work yourself?

John
Comment
There are no comments made yet.
  1. more than a month ago
  2. Ask Sheldon
  3. # 7
John H. Accepted Answer Pending Moderation
Registered
0
Votes
Undo
[quote="Sheldon Dingwall":1ha43csd]

I think John Hiss could better answer this. My take on it is that it would give you a little more of a P pickup tone with the neck soloed. In combination settings it will add a little more thickness and alter the mids slightly. [/quote:1ha43csd]

Hi EG,

Coils internally linked in parallel have a brighter sound focused on the upper mids and treble. Coils internally linked in series emphasize the lower mids and bottom end. Also, series pups have a greater output, as well.

Replacing the bridge pup with a switchable pup or one that is permanently wired in series (Mach II), will add some nice (to me, anyway) mid punch to the sound, especially when soloing the bridge pup and/or when setting the bridge pup and neck pup in series with each other on the usual 4-way pickup selector. The fact that the internally linked series pup in the bridge position has a higher output, gives that setting quite a punch.

Icing on the cake would be to have the neck pup switchable, as Sheldon mentions, for more (again, for me) usable tones with both pups in parallel with each other on the 4-way selector and when the neck pup is soloed.

I'm thrilled with mine with the permanent series pup in the bridge position and the switchable pup in the neck position. There are 7 distinct tonal options w/o engaging the pre amp. I think the pickup upgrades would be fantastic for ABIs. I rarely use my pre any more. Only for some extra fatness when soloing the bridge pup.

Making only one pup switched internally is pretty straight forward, too, if you don't mind giving up the bluEQube.
Comment
There are no comments made yet.
  1. more than a month ago
  2. Ask Sheldon
  3. # 8
fullrangebass Accepted Answer Pending Moderation
Registered
0
Votes
Undo
[quote="Sheldon Dingwall":1rbrozob]

I think John Hiss could better answer this. [b:1rbrozob]My take on it is that it would give you a little more of a P pickup tone with the neck soloed. In combination settings it will add a little more thickness and alter the mids slightly[/b:1rbrozob].[/quote:1rbrozob]

I agree with the statement. It's definitely a P tone (and I have only recently realized that I am more a P guy than a J). In the series and parallel (between pickups) settings, there is more low mid thickness added in the picture

PS I forgot to mention that I am NOT John H. but on the other hand we don't know who that Fullie guy is :wink:
Comment
There are no comments made yet.
  1. more than a month ago
  2. Ask Sheldon
  3. # 9
Sheldon Dingwall Accepted Answer Pending Moderation
Admin
0
Votes
Undo
[quote="evilgus":qrpn07b1]Hi Sheldon,

I'm definitely considering upgrading my ABII FD-3 rear pickup to switchable for some more beef and mid-range, but for what reasons should I consider upgrading the neck pickup as well? I presume with double switching on both, you can get a number of sounds that are in-between the stock series and parrallel settings?

Cheers,

Justin[/quote:qrpn07b1]

I think John Hiss could better answer this. My take on it is that it would give you a little more of a P pickup tone with the neck soloed. In combination settings it will add a little more thickness and alter the mids slightly.
Comment
There are no comments made yet.
  1. more than a month ago
  2. Ask Sheldon
  3. # 10
evilgus Accepted Answer Pending Moderation
Registered
0
Votes
Undo
Hi Sheldon,

I'm definitely considering upgrading my ABII FD-3 rear pickup to switchable for some more beef and mid-range, but for what reasons should I consider upgrading the neck pickup as well? I presume with double switching on both, you can get a number of sounds that are in-between the stock series and parrallel settings?

Cheers,

Justin
Comment
There are no comments made yet.
  1. more than a month ago
  2. Ask Sheldon
  3. # 11
Sheldon Dingwall Accepted Answer Pending Moderation
Admin
0
Votes
Undo
The official announcement on FD-3 4L pickups is that they come standard on Z-series and higher models.

We're hesitant to release them singly because we don't have the manpower available to handle requests for custom wiring schemes.

As usual we're pretty flexible on just about everything, so if a switchable FD-3 is important to you, we can make an accommodation provided you are able to design, diagnose and troubleshoot your own circuit or at least take it to someone who can.
Comment
There are no comments made yet.
  1. more than a month ago
  2. Ask Sheldon
  3. # 12
John H. Accepted Answer Pending Moderation
Registered
0
Votes
Undo
[quote="Dingbat"]Thanks John H. but just to clarify further
Comment
There are no comments made yet.
  1. more than a month ago
  2. Ask Sheldon
  3. # 13
Dingbat Accepted Answer Pending Moderation
Registered
0
Votes
Undo
Thanks John H. but just to clarify further
Comment
There are no comments made yet.
  1. more than a month ago
  2. Ask Sheldon
  3. # 14
John H. Accepted Answer Pending Moderation
Registered
0
Votes
Undo
[quote="Dingbat":2dir5j4q]Was there an official announcement about the Mach II 4L pickup? I guess haven't been paying attention. I've been trying to gather what I can from other threads.[/quote:2dir5j4q]

Awhile ago something was posted, perhaps by Dingwall Sales, stating that the new Zs and Primas would not have a bluEQube but would have switchable FD-3/Mach II pups. I'm not sure if anything else has been communicated publicly.

[quote="Dingbat":2dir5j4q]From what I've read from other members, the Mach II is exactly the same as the FD3 except that the coils are wired in series instead of parallel. Is that the whole story?
[/quote:2dir5j4q]

Yes. The FD-3 (parallel coils) has a DC resistance of about 2.2 Ohms and the Mach II (series coils) is about 8.8 Ohms.

I'm not aware that a switchable pup is yet available for the SJ.
Comment
There are no comments made yet.
  1. more than a month ago
  2. Ask Sheldon
  3. # 15
Mark L Accepted Answer Pending Moderation
Registered
0
Votes
Undo
I don't remember an announcement. I had Sheldon put a MachII in my Voodoo, but it was one of the first ones, not the 4L, I guess. Clarification would be helpful.

Mark
Comment
There are no comments made yet.
  1. more than a month ago
  2. Ask Sheldon
  3. # 16
  • Page :
  • 1


There are no replies made for this post yet.
However, you are not allowed to reply to this post.