Author Topic: It was going so well  (Read 596 times)

g-dude

  • Member
  • ***
  • Posts: 92
It was going so well
« on: March 07, 2024, 09:10:07 PM »
Brass - nice and shiny after putting in a bit of effort.

Strings - new set of Alembic strings

Truss rod - got that sorted

Bridge height - quickly dialed in

Intonation - literally perfect from where I reassembled the bridge to, without making note of what it originally had been set at.

Pickups…

Uh oh.

I realized the upper screws were not in the right places, and the lower ones weren’t installed.

There was foam tape lining the pickup cavities.

I got the foam out, and then discovered that the neck pickup retention screw hole on the B string side wasn’t actually biting. It appears the hole is wider than stock.  On the G string side, everything is okay.

So I have only one pickup retention screw for the neck pickup. I need to see if I can source a wider screw and figure out what fits.

For the bridge pickup, same foam tape issue. In this case, it appears that the pickup wires limit how low the bridge pickup can go. Ugh.

I’m not sure if the wiring is going through the original route (there appears to be a hole that was chiseled in on the G string side of the bridge pickup. I see a nice little channel that the wires could go in, but they have to cross right between the pickup height screw and the retention screw on the G side.

Can’t quite get the pickup height down to 1/4 inch.

Also, it appears that the wires in the control cavity have been wrapped around some sort of cylinder which prevents me from being able to disconnect the pickups and try to get the wires arranged differently.

Advice appreciated.

lbpesq

  • club
  • Senior Member
  • *
  • Posts: 10683
Re: It was going so well
« Reply #1 on: March 07, 2024, 09:51:27 PM »
1.  What type of instrument are you describing?
2.  Can you post some pics?  (worth 1000 words and all that stuff!)

Bill, tgo

g-dude

  • Member
  • ***
  • Posts: 92
Re: It was going so well
« Reply #2 on: March 07, 2024, 09:58:35 PM »
1.  What type of instrument are you describing?
2.  Can you post some pics?  (worth 1000 words and all that stuff!)

Bill, tgo

Yeah, those are both things I probably should have done!

It's a 1993 Essence 5.

Images show:

1) The screw hole that seems too wide for the pickup retention screws
2) The bridge pickup cavity where the wiring enters right between the pickup height screw and the retention screw hole.
3) The electronics cavity


edwardofhuncote

  • club
  • Senior Member
  • *
  • Posts: 8017
Re: It was going so well
« Reply #3 on: March 07, 2024, 10:20:50 PM »
I'm half-asleep, and my eyes are blurry so I may be wrong.  I think the larger screw hole for pick-up height adjustment is missing the threaded insert.

The 'cylinder' the the pickup leads are looped through is a ferrite bead. It's supposed to be there. If you need to remove it to reroute the wires, there's instructions for that here somewhere too... hang on, I'll be back with 'em.


*okay here ya' go g-dude, here's how to uncouple pickup leads from modular connecters: https://club.alembic.com/index.php?topic=209.0

And here's how to install threaded inserts in pickup cavities, it also tells you what sizes: https://club.alembic.com/index.php?topic=207.0

You're doing fine.
« Last Edit: March 07, 2024, 10:36:02 PM by edwardofhuncote »

jazzyvee

  • club
  • Senior Member
  • *
  • Posts: 8701
  • Bass, Guitar, Preamps.
Re: It was going so well
« Reply #4 on: March 08, 2024, 12:21:10 AM »
Took the words right out of my mouth.  You should be able to order the inserts and any new screws from Alembic.
I expect the foam has been added by a previous owner to try to get the pickup level. Once you get the insert and the scres are able to set the pickup height the foam won't be needed.
Might be worth sticking a bit of foam to the ferrite bead once everything is sorted to stop it tapping against the inside of the cavity cover plate.
The sound of Alembic is medicine for the soul!
http://www.alembic.com/info/fc_ktwins.html

g-dude

  • Member
  • ***
  • Posts: 92
Re: It was going so well
« Reply #5 on: March 08, 2024, 05:34:04 AM »
I'm half-asleep, and my eyes are blurry so I may be wrong.  I think the larger screw hole for pick-up height adjustment is missing the threaded insert.

The 'cylinder' the the pickup leads are looped through is a ferrite bead. It's supposed to be there. If you need to remove it to reroute the wires, there's instructions for that here somewhere too... hang on, I'll be back with 'em.


*okay here ya' go g-dude, here's how to uncouple pickup leads from modular connecters: https://club.alembic.com/index.php?topic=209.0

And here's how to install threaded inserts in pickup cavities, it also tells you what sizes: https://club.alembic.com/index.php?topic=207.0

You're doing fine.

Much appreciated! This is exactly what I need.

Now I just need to hope that the stains come out of the “good” microfiber towels that I apparently wasn’t supposed to use to polish the brass. Wife was not happy about that one.

gearhed289

  • club
  • Senior Member
  • *
  • Posts: 1087
    • Nomadic Horizon
Re: It was going so well
« Reply #6 on: March 08, 2024, 07:46:59 AM »
I'm not sure if anyone has already mentioned it, but be careful not to crack the pickup ears when you tighten them down.  :D

fivestringdan

  • Senior Member
  • *****
  • Posts: 527
Re: It was going so well
« Reply #7 on: March 08, 2024, 10:01:59 AM »
YES! That is an expensive mistake. :D

I think you got a pretty good deal on that bass. Nothing catastrophic so far and a great looking Alembic!

I'm not sure if anyone has already mentioned it, but be careful not to crack the pickup ears when you tighten them down.  :D
« Last Edit: March 08, 2024, 10:09:18 AM by fivestringdan »

g-dude

  • Member
  • ***
  • Posts: 92
Re: It was going so well
« Reply #8 on: March 08, 2024, 10:02:43 AM »
I'm not sure if anyone has already mentioned it, but be careful not to crack the pickup ears when you tighten them down.  :D

Yes, I am aware of that, but the reminder is appreciated and warranted!

xlrogue6

  • club
  • Senior Member
  • *
  • Posts: 552
Re: It was going so well
« Reply #9 on: March 08, 2024, 10:35:31 AM »
If you do break the ears, this will allow you to glue them back on as long as they're not crumbled.
tbbonding.com/product/poly-kits/

g-dude

  • Member
  • ***
  • Posts: 92
Re: It was going so well
« Reply #10 on: March 08, 2024, 05:20:19 PM »
So I bought some inserts and apparently they are not the right size. They fit the retaining screw just fine, but are positively massive compared to the existing hole.

I submitted a tech support message to see about ordering some that will fit.

g-dude

  • Member
  • ***
  • Posts: 92
Re: It was going so well
« Reply #11 on: March 08, 2024, 05:37:40 PM »
Gets worse. One of the wires came loose from the crimped terminal when I was putting the plastic connectors back on.

Artgeckko

  • Member
  • ***
  • Posts: 155
Re: It was going so well
« Reply #12 on: March 08, 2024, 10:41:35 PM »
Hey g-dude,

I ran into a similar issue with returning a bass to its original form.
In addition to many other issues, the AXY Pickups were good, but the original preamp had been replaced, and the PU wires had the connectors removed and had been soldered to the replacement (Glockenklang) preamp. 
After finding used Alembic spoiler electronics (probably from same era?), I did find a crimp tool kit with the specific connectors (amazon) used for connecting to the preamp.  It took multiple attempts to correctly crimp these wires within their respective connectors with my stubby fingers.
Not sure if your connectors are the same (dupont 2.54 2 pin connectors) but those seem to be the right type.
Quick google search should be able to determine type.  I also believe that the connectors have type printed on connector.  Additionally, RTL fasteners is a pretty good source for brass threaded inserts.  Check with Alembic for proper sizing.  Lots of great info and folks willing to help on this site! Seems that lots of used Alembics have levels of abuse to the threaded inserts and pickup screws.  Good luck

g-dude

  • Member
  • ***
  • Posts: 92
Re: It was going so well
« Reply #13 on: March 10, 2024, 03:57:02 PM »
Hey g-dude,

I ran into a similar issue with returning a bass to its original form.
In addition to many other issues, the AXY Pickups were good, but the original preamp had been replaced, and the PU wires had the connectors removed and had been soldered to the replacement (Glockenklang) preamp. 
After finding used Alembic spoiler electronics (probably from same era?), I did find a crimp tool kit with the specific connectors (amazon) used for connecting to the preamp.  It took multiple attempts to correctly crimp these wires within their respective connectors with my stubby fingers.
Not sure if your connectors are the same (dupont 2.54 2 pin connectors) but those seem to be the right type.
Quick google search should be able to determine type.  I also believe that the connectors have type printed on connector.  Additionally, RTL fasteners is a pretty good source for brass threaded inserts.  Check with Alembic for proper sizing.  Lots of great info and folks willing to help on this site! Seems that lots of used Alembics have levels of abuse to the threaded inserts and pickup screws.  Good luck

So, by way of an update:

- I can confirm that the Someline (strange name) kit on Amazon contains the connectors, a wire stripper, and a crimper.  Basically everything you need to get the pins back on the wires.
- That being said, follow the advice given here and do not cut the wires - in my case, they broke
- If you have to re-crimp one, you might have to cut the other one in order to have enough room to crimp.


My current bass status:

- I get sound, the pan control works - basically if you didn't know better, everything would be a-OK.
- I'm still in need of the brass insert.  The ones that you can get at most woodworking places are simply too large in terms of outer diameter.  What does this mean in terms of the bass?  I basically need to set the screws on the neck pickup in such a way that the pickup ends up becoming rather tilted.  It's not ideal, but it's better than the pickup falling onto the strings pending a response from the troubleshooting form I submitted to acquire inserts.
- I'm still limited on how low I can get the bridge pickup because of a wire getting in the way.  The obvious solution is to simply have the pickup higher pending some brilliant advice on how to get the wires out of the way.

I did go ahead and throw in an order to RTL on the off chance that they have the right size inserts, but obviously if I can get them direct from Alembic, I will do so in the interests of maximizing my odds of this turning out properly.

cntrabssn

  • club
  • Member
  • *
  • Posts: 73
Re: It was going so well
« Reply #14 on: March 10, 2024, 11:44:12 PM »
Hello g-dude,

I’ve had the same thing happen to me with the pickup connectors. I was able to get parts from a local electronics store, but it was a long time ago and that doesn’t seem to be practical these days.

Alembic uses Molex KK-254 (2.54mm (.100 inch)) series connectors for the pickups. The Dupont connectors maybe the same, but I’m not sure. They must be compatible, based on Artgeckko’s experience.
Since you’re checking Amazon, try searching for "molex kk 254” just in case. If you’re sticking with the original connector housing/contact pair type, I think you’ll be looking for something like this (contact only):
http://https://www.amazon.com/MOLEX-08-50-0135-Contact-Socket-Contacts/dp/B00GQQD6WG/ref=sr_1_7?crid=3TKJ1AHAH9EWU&dib=eyJ2IjoiMSJ9.T6CxTvohgkqxPjiKIih6XuyBaA6KNoQMj8znXHzEJE8BpF6sdqxYjHEoqRVKaYy_XCCsrsFal6R2bq3UtbRPDSmigOFR2uioz4syQG5a1_5KJe_hPMP8OdztKogfJWzncvHkGF92oR9vUiNWHQP6Jtm-_7VaXEKmbmOLfAZg2-Rl-1emG1Gsh_Mlo1C4NlXms8pu-ER-bzlTro0W7swJjBn5fJ4dkqtF8oOajSBm3yk.UQPoHgjasf0qnJyhkTLd_fALczvbUhzd--8ri0bIPWY&dib_tag=se&keywords=molex+kk+254&qid=1710138317&sprefix=molex+kk+254%2Caps%2C321&sr=8-7


Sorry, After re-reading I realized that the kit from Amazon might have worked for you, so this all is probably a moot point. Anyway I guess I can keep this around for future reference.
« Last Edit: March 11, 2024, 12:23:20 AM by cntrabssn »