| Author | Message | ||
| ifredoto
New Username: ifredoto Post Number: 2 Registered: 12-2008 |
I have a 1980 LSB1 and am the orignial owner. I have gone through several 5 pin cables over the years and have recently encountered an issue. A high pitched squeal which stops when I disconnect the 5-pin cable. When I plugged it back in, it started again. This isn't the forst time this has happned. I changed to a back up cable and didn't have any issues for the remainder of the gig. I did have the module board worked on some 20 years ago and was wondering if anyone else had similar issues .Is the cable or the comdule board | ||
| 811952
Senior Member Username: 811952 Post Number: 1742 Registered: 10-2003 |
turn the filter knob and see if it quits. mine does that sometimes if the q is at maximum. John | ||
| the_mule
Senior Member Username: the_mule Post Number: 754 Registered: 1-2004 |
If you try John's suggestion and it seems that the problem is there, you could tweak the trimpots on the backplate for that particular pickup: http://alembic.com/club/messages/16271/50896.html?1208917987 I had the same problem with the bridge pickup of my Series I with the filter and q to the max and I managed to solve it with a small adjustment of the hum balance trimpot and the pickup height. Good luck! Wilfred | ||
| davehouck
Moderator Username: davehouck Post Number: 8819 Registered: 5-2002 |
- Does it always squeal with the one 5-pin cable, but never with the other? - Does it squeal with a 1/4" cable? - How long has this been happening? - Does it squeal when the selector switch is on neck pickup ony? Bridge pickup only? | ||
| 811952
Senior Member Username: 811952 Post Number: 1748 Registered: 10-2003 |
-Does it do it on the job? -Does it do it with a knob? -Does is do it in a pinch? -When it does it do you flinch? -Does it do it over there? -Does it do it in a chair? ;) I couldn't resist. Sorry. John | ||
| davehouck
Moderator Username: davehouck Post Number: 8820 Registered: 5-2002 |
Actually, it's a pretty good troubleshooting list! | ||
| 2400wattman
Senior Member Username: 2400wattman Post Number: 743 Registered: 11-2005 |
Sounds like an application for a prostitute to me, but that's me and if anybody here KNOWS me I would think of something like this, me thinks! | ||
| slawie
Intermediate Member Username: slawie Post Number: 111 Registered: 8-2002 |
Wow Dr. Seuss is a club member! slawie | ||
| 811952
Senior Member Username: 811952 Post Number: 1749 Registered: 10-2003 |
Does he play a Series I? Does he play it just for fun? Does he gig with it for free? Does he gig and charge a fee? ;) John | ||
| ifredoto
New Username: ifredoto Post Number: 3 Registered: 12-2008 |
I have tried flipping switches and turning knobs and the only thing which will stop the noise is disconnecting the cable. It has also happened once using the 1/4" but coincidentally, the batteries went dead so after I changed the batteries, no noise. I will try the trim potts as I have cleaned everything else except those. | ||
| davehouck
Moderator Username: davehouck Post Number: 8824 Registered: 5-2002 |
So it happens with both five pin cables? | ||
| 811952
Senior Member Username: 811952 Post Number: 1753 Registered: 10-2003 |
I might suggest re-seating the connections inside the body. Being an older instrument, it's entirely likely that there may be oxidization that's throwing the whole mess out of specification.. John | ||
| ifredoto
New Username: ifredoto Post Number: 4 Registered: 12-2008 |
Hasn't happened with "Alembic" cable yet. It might be too soon to tell. I will check the trim potts and inside body connections to see if that helps. Thanks for the suggestions. Ian | ||
| 811952
Senior Member Username: 811952 Post Number: 1754 Registered: 10-2003 |
That's a beautiful bass you've got there... John |
