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fthec
Junior
Username: fthec

Post Number: 20
Registered: 5-2005
Posted on Sunday, February 24, 2008 - 12:55 pm:   Edit Post

Im looking for a Series II neck pick up. Four string. It was build in 1981 and the neck pu seems to be replaced but I want the original one. Can you help me? Must be shipped to Germany.
regards hilmar
davehouck
Moderator
Username: davehouck

Post Number: 6263
Registered: 5-2002
Posted on Monday, February 25, 2008 - 4:31 pm:   Edit Post

Hilmar; the shell designs have changed from time to time over the years, and different designs might be used within the same year; so you may want to post a picture of the pickup that you want to match to. The only difference between the neck pickup and the bridge pickup is the length of the cable that runs from the pickup to the PC board; and Series I and Series II use the same pickups. I believe Alembic has some of the older designs in stock at their shop; you may want to contact them.
fthec
Junior
Username: fthec

Post Number: 21
Registered: 5-2005
Posted on Tuesday, February 26, 2008 - 12:10 am:   Edit Post

Here is a picture, the neck pu seems to be not original
both pu
keurosix
Advanced Member
Username: keurosix

Post Number: 251
Registered: 10-2005
Posted on Tuesday, February 26, 2008 - 3:43 am:   Edit Post

Hello Hilmar,
I once owned a 1982 Series 1, and the original pickups had no "Alembic" script. They were blank, like your neck pickup. Which may mean that your bridge pickup is the newer one. Just ask Alembic for the one you want: with "Alembic" logo, or without so you can get a matched set to your liking. They should have both types in stock.
Kris
keavin
Senior Member
Username: keavin

Post Number: 1394
Registered: 12-2002
Posted on Tuesday, February 26, 2008 - 4:04 am:   Edit Post



(Message edited by keavin on February 26, 2008)
keavin
Senior Member
Username: keavin

Post Number: 1395
Registered: 12-2002
Posted on Tuesday, February 26, 2008 - 4:04 am:   Edit Post

take the pick-up out & look under it to verify. it should say alembic, it looks origonal to me.
fc_spoiler
Senior Member
Username: fc_spoiler

Post Number: 685
Registered: 5-2006
Posted on Tuesday, February 26, 2008 - 7:52 am:   Edit Post

+1
It looks like the bridge pickup was replaced, my '83 Spoiler also has the "blank" pickups. The pickups on my '87 Spoiler have the same script style like your bridge pickup.
fthec
Junior
Username: fthec

Post Number: 22
Registered: 5-2005
Posted on Tuesday, February 26, 2008 - 1:23 pm:   Edit Post

I think the neck pu was replaced. A friend of mine checked it for an Alembic logo and it has none. But nevertheless the bridge is more noisy under some circumstances and in addition the wiring seems to be in the wrong way. so itsout of phase when using both pus. So it might be better to replace this one. But I will check. concerning the serial number the bass was build in 1982.
fc_spoiler
Senior Member
Username: fc_spoiler

Post Number: 686
Registered: 5-2006
Posted on Tuesday, February 26, 2008 - 2:33 pm:   Edit Post

None of my Alembic pickups have a logo or name on the back, I think it's highly unlikely the neck pickup is not original... (or it was replaced with one that looks like the the pickup that was on the bass)
On the pickups of my '83 (and my former '83) is nothing that indicates that they are Alembics.
Someone correct me if I'm wrong, but I think that the Alembic name on the face of the pickup was first used in '84 (maybe late '83)

Edit: You might also want to make sure the replaced pickup (regardless which one was replaced) wasn't replaced with an AXY pickup ;-)

(Message edited by fc_spoiler on February 26, 2008)
mica
Moderator
Username: mica

Post Number: 5163
Registered: 6-2000
Posted on Tuesday, February 26, 2008 - 4:12 pm:   Edit Post

Just listen to hum. With the humbalance trimpots turned all the way off, orient the bass physically in space to where the hum is the loudest. Now, listening to one pickup at a time, see that the hum decreases and then increases when adjusting the trimpot through the null (about halfway up). If both pickups null when listened to individually, then that means that all 3 coils (neck, hx, and bridge) have the same polarity.

If they do, try the humcancelling procedure.

If you want to check the resistance, all 3 pickups should have approximately the same DC resistance. If you make these measurements, let me know and we can comment if they are close enough.

Magnetic polarity can be confirmed by placing the faces of the neck and bridge pickups together, they should repel eachother.

Turn humcanceller all the way off (turn down both humbalance trimpots) and listen to see if the the pickups have approx the same volume, and that they don't sound out of phase with the humcanceller turned off.

Let me know what you find out with all this testing.
fthec
Junior
Username: fthec

Post Number: 23
Registered: 5-2005
Posted on Wednesday, February 27, 2008 - 12:40 pm:   Edit Post

Thanks Mica, I will find the time for the testing next week
hilmar
pennyball
Junior
Username: pennyball

Post Number: 20
Registered: 5-2007
Posted on Thursday, February 28, 2008 - 5:47 am:   Edit Post

Hi everybody, I think the bridge pickup is a later replacement, too. If you want to find the easy way out, here is what I've done in a similar circumstance, when BOTH shells are black.
Remove the bridge pickup, carefully avoiding to pull the "hot" wire, as they slip inside the shield and the epoxy casing, eventually killing your pickup forever.
Gently sand the shell with extra fine sandpaper until the logo is gone. Polish the shell with some fine compound or a brass polishing cream, until it shines like the neck pickup. Et voil you have 2 matching pickups. Hope this helps.
fthec
Junior
Username: fthec

Post Number: 24
Registered: 5-2005
Posted on Thursday, March 06, 2008 - 12:34 pm:   Edit Post

Have done the humecancelling procedure:
the bridge pu is nearly quite, the neck pu gives some high frequency noise.
the resistence of all pus is between 3.1 and 3.2 kOhm. but I dont know if its DC resistance.
the magnetic polarity of both pus is different. I guess this is the cause of the out / of phase sound when both pus are switched on. To avoid thsi Ive changed the polarity of the wire from the neck pu. the sound than is in phase but its more noisy.
so what do you recommend

regards hilmar

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