-
November 24th, 2017, 09:46 PM
#11
Junior Hostboard Member
Re: Altec Bolero 890c schematic
Thanks everybody. Looks like I came to the right place. After reading these posts I will most likely not bother bypassing the switch.
But I will go ahead and replace the capacitors. Are there any particular brand of capacitors that you would recommend? I don't mind spending a little more if it makes a difference. My first Altec purchase, and I'm really pleased.
-
November 26th, 2017, 08:35 PM
#12
Junior Hostboard Member
Re: Altec Bolero 890c schematic
Also thanks to mike1 and mah for the photos and sketched schematic!
-
November 28th, 2017, 12:19 AM
#13
HB Super Moderator
Re: Altec Bolero 890c schematic
Originally Posted by
miker1
The three resistors controlled by the switch are 15, 15 and 30 ohm. It's a little confusing to me how the slide switch is wired. When I measured the resistance with the drivers removed (resistance across the leads going to the tweeter) I got 31.8 ohms at the +3 dB setting; 10.6 at the Norm setting; and 7.6 at the -3dB setting. Given some tolerance, it seems the -3dB setting parallels the two 15 ohm resistors, and the Norm setting parallels the 30 and one of the 15 ohm resistors.
- - - Updated - - -
Here's my crude schematic of the crossover with the switch details uncertain to me.
Thanks for taking the time to draw up a schematic Miker1 !
Tags for this Thread
Posting Permissions
- You may not post new threads
- You may not post replies
- You may not post attachments
- You may not edit your posts
-
Forum Rules
This forum has been viewed: 21015457 times.
Bookmarks