Results 1 to 12 of 12

Thread: Premier B-160 Club bass amplifier

  1. #1
    Supporting Member mozz's Avatar
    Join Date
    Oct 2015
    Location
    NEPA
    Posts
    799
    Thumbs Up/Down
    Received: 173/1
    Given: 121/0
    Rep Power
    4

    Premier B-160 Club bass amplifier

    Looking for the schematic for the Premier B-160 Club bass amplifier. This particular version is from 1963-64 and the tube lineup is
    6AB4 12AX7 6V6 6V6 5Y3. It looks completely untouched so i am taking it the 6AB4 is original.

    0 Not allowed! Not allowed!

  2. #2
    Supporting Member mozz's Avatar
    Join Date
    Oct 2015
    Location
    NEPA
    Posts
    799
    Thumbs Up/Down
    Received: 173/1
    Given: 121/0
    Rep Power
    4
    Well, i ended up drawing it out the best i could. Downloaded express cad and kicad so still learning those. The few questions i have are.........it's a paraphase inverter correct? Probably going to switch the grid leak bias over to cathode bias (if it hates humbuckers or is microphonic)and i heard to find out the correct value measure the plate resistor voltage drop and then use the correct value which gives you the same drop.Click image for larger version. 

Name:	PREMIERB160.jpg 
Views:	425 
Size:	638.3 KB 
ID:	40933

    0 Not allowed! Not allowed!

  3. #3
    Supporting Member mozz's Avatar
    Join Date
    Oct 2015
    Location
    NEPA
    Posts
    799
    Thumbs Up/Down
    Received: 173/1
    Given: 121/0
    Rep Power
    4
    Couple mistakes. The cathode bypass in 12ax7 is 125uf/25v. 2000pf on output needs to be there or it oscillates. 5000pf on input needs to be there or it oscillates when bass is all the way down and treble and volume is all the way up. Will update schematic with voltages once i have it working 100%.

    0 Not allowed! Not allowed!

  4. #4
    Twobie
    Join Date
    Nov 2018
    Posts
    3
    Thumbs Up/Down
    Received: 1/0
    Given: 0/0
    Rep Power
    0
    I have a schematic for the B-160. Being an owner of 3. 2 that have ef86 circuit, and the later version with the 6AB4 instead(which isnít even close to as real deal as the original ef86 b-160ís. Let me dig it up, only happen to find on eBay when someone was selling one. Because I did like you and search the whole net and came up empty.

    1 Not allowed! Not allowed!

  5. #5
    Old Timer J M Fahey's Avatar
    Join Date
    Oct 2007
    Location
    Buenos Aires, Argentina
    Posts
    11,366
    Thumbs Up/Down
    Received: 1,558/18
    Given: 1,200/28
    Rep Power
    26
    Thanks.
    Post it when you find it.

    0 Not allowed! Not allowed!
    Juan Manuel Fahey

  6. #6
    Twobie
    Join Date
    Nov 2018
    Posts
    3
    Thumbs Up/Down
    Received: 1/0
    Given: 0/0
    Rep Power
    0
    Not allowing me to attach photo. Donít do these ever. I was looking for info on the none ef86 B-160 , and came across your plight for schematic. So Iím trying to do my good deed for another gear head. Any clue tonme as to how to post tHe pic. Lmk

    0 Not allowed! Not allowed!

  7. #7
    Supporting Member mozz's Avatar
    Join Date
    Oct 2015
    Location
    NEPA
    Posts
    799
    Thumbs Up/Down
    Received: 173/1
    Given: 121/0
    Rep Power
    4
    Edit. Duplicate

    Cabinet basically fell apart, still have it, rehoused in a deluxe cabinet, fit almost perfect.

    0 Not allowed! Not allowed!
    Last edited by mozz; 11-19-2018 at 06:49 PM.

  8. #8
    "Thermionic Apocalypse" -JT nickb's Avatar
    Join Date
    Dec 2009
    Location
    Devon, UK
    Posts
    3,443
    Thumbs Up/Down
    Received: 649/1
    Given: 552/1
    Rep Power
    13
    Quote Originally Posted by Electronicjernt View Post
    Not allowing me to attach photo. Don’t do these ever. I was looking for info on the none ef86 B-160 , and came across your plight for schematic. So I’m trying to do my good deed for another gear head. Any clue tonme as to how to post tHe pic. Lmk
    Is this it the same as yours

    Premier_B160_Bassamp.pdf ?

    0 Not allowed! Not allowed!
    Experience is something you get, just after you really needed it.

  9. #9
    Supporting Member mozz's Avatar
    Join Date
    Oct 2015
    Location
    NEPA
    Posts
    799
    Thumbs Up/Down
    Received: 173/1
    Given: 121/0
    Rep Power
    4
    Been 2 years and the amp is now buried behind a few more acquisitions, i think i converted it from the grid leak to cathode bias. Yes, post the 6ab4 schematic if you have it. Many Premiers have many versions, same as Gibson's and Ampegs.
    Attached Thumbnails Attached Thumbnails Click image for larger version. 

Name:	rps20181119_134435.jpg 
Views:	37 
Size:	145.1 KB 
ID:	51161  

    0 Not allowed! Not allowed!

  10. #10
    Twobie
    Join Date
    Nov 2018
    Posts
    3
    Thumbs Up/Down
    Received: 1/0
    Given: 0/0
    Rep Power
    0
    Sort itís been so long. Stacks of work overtook all...
    Premier B-160 Club Bassamp

    0 Not allowed! Not allowed!

  11. #11
    Site Janitor tboy's Avatar
    Join Date
    May 2006
    Location
    Behind The Zion Curtain
    Posts
    636
    Blog Entries
    1
    Thumbs Up/Down
    Received: 330/1
    Given: 251/4
    Rep Power
    15
    Did you mean to attach the schematic?

    0 Not allowed! Not allowed!
    -tb

  12. #12
    Old Timer J M Fahey's Avatar
    Join Date
    Oct 2007
    Location
    Buenos Aires, Argentina
    Posts
    11,366
    Thumbs Up/Down
    Received: 1,558/18
    Given: 1,200/28
    Rep Power
    26
    Quote Originally Posted by Electronicjernt View Post
    Sort it’s been so long. Stacks of work overtook all...
    Premier B-160 Club Bassamp
    Canīt see the schematic or picture, what kind of file is it?.

    0 Not allowed! Not allowed!
    Juan Manuel Fahey

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Similar Threads

  1. Premier B-160 Bass Amp issues
    By retrorod in forum Maintenance, Troubleshooting & Repair
    Replies: 5
    Last Post: 05-05-2010, 10:43 PM
  2. PREMIER AMPS B-160 and B-220
    By retrorod in forum Maintenance, Troubleshooting & Repair
    Replies: 7
    Last Post: 02-17-2010, 07:15 PM
  3. Premier b-160 & b-220
    By retrorod in forum Harp Amps
    Replies: 1
    Last Post: 02-16-2010, 10:55 PM
  4. SUNN SB 160 - Studio Bass???
    By bessee in forum SUNN
    Replies: 0
    Last Post: 04-15-2008, 08:14 AM
  5. Premier B160 Club Bass Amp
    By wawamusic in forum Repair and Restoration
    Replies: 0
    Last Post: 12-24-2006, 07:44 PM

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •