Welcome To the Hoffman Amplifiers Forum

September 07, 2025, 03:07:36 am
guest image
Welcome, Guest. Please login or register.
-User Name
-Password



Hoffman Amps Forum image Author Topic: Altec 418 Question  (Read 6728 times)

0 Members and 1 Guest are viewing this topic.

Offline sll

  • Level 1
  • *
  • Posts: 12
  • I love Tube amps
Hoffman Amps Forum image
Altec 418 Question
« on: May 09, 2021, 07:54:10 pm »
Does anyone know what the difference is between the Altec 418 and 418B 15" guitar speakers? Thanks in advance for any help you can provide.

Offline shooter

  • Level 5
  • *******
  • Posts: 11014
  • Karma Loves haters
Hoffman Amps Forum image
Re: Altec 418 Question
« Reply #1 on: May 10, 2021, 07:04:19 am »
Went Class C for efficiency

Offline jjasilli

  • Level 5
  • *******
  • Posts: 6731
  • Took the power supply test. . . got a B+
Hoffman Amps Forum image
Re: Altec 418 Question
« Reply #2 on: May 11, 2021, 08:26:10 pm »

google: Altec Lansing 418 specs & Altec Lansing 418b specs.  There is more than one 418 model.  See also:


http://alteclansingunofficial.nlenet.net/      especially Thiele-Small Parameters


http://www.lansingheritage.org/html/altec/catalogs/altec-cat.htm






Offline sll

  • Level 1
  • *
  • Posts: 12
  • I love Tube amps
Hoffman Amps Forum image
Re: Altec 418 Question
« Reply #3 on: May 11, 2021, 08:41:59 pm »

google: Altec Lansing 418 specs & Altec Lansing 418b specs.  There is more than one 418 model.  See also:


http://alteclansingunofficial.nlenet.net/      especially Thiele-Small Parameters


http://www.lansingheritage.org/html/altec/catalogs/altec-cat.htm

Thanks but I still can't find any information regarding the plain 418 model, only later versions such as the 418B and 418-8H.

Offline shooter

  • Level 5
  • *******
  • Posts: 11014
  • Karma Loves haters
Hoffman Amps Forum image
Re: Altec 418 Question
« Reply #4 on: May 12, 2021, 05:00:43 am »
guessing the B came out when Altec found an improvement for the non- B  :icon_biggrin:
Went Class C for efficiency

Offline acheld

  • Level 3
  • ***
  • Posts: 1264
  • No well conceived plan survives the event.
Hoffman Amps Forum image
Re: Altec 418 Question
« Reply #5 on: May 12, 2021, 09:10:55 am »
Out of curiosity, since none of us can find a reference to the 418 model, what is the context of your question?  Do you have a 418?   Pictures would be nice.

Offline sll

  • Level 1
  • *
  • Posts: 12
  • I love Tube amps
Hoffman Amps Forum image
Re: Altec 418 Question
« Reply #6 on: May 12, 2021, 09:35:57 am »
Sure, I should have thought of that earlier. I thought that I was purchasing a 418B but received this 418 instead. I'm trying to figure out just what it Is that  I have and if it is suitable for my application.
« Last Edit: May 12, 2021, 09:18:11 pm by sll »

Offline 1blueheron

  • Level 3
  • ***
  • Posts: 524
  • More junk than I know what to do with...
Hoffman Amps Forum image
Re: Altec 418 Question
« Reply #7 on: August 21, 2021, 04:12:54 pm »
Contact Great Plains Audio.  They bought out all the tooling, and records and should be able to tell you what you have based on the SN# if it hasn't been re-coned at some point.

https://greatplainsaudio.com/wp-content/uploads/2016/06/418-8H_lfspkr_spec_sheet.pdf
https://greatplainsaudio.com/wp-content/uploads/2016/06/418B_lfspkr_spec_sheet.pdf

Offline sll

  • Level 1
  • *
  • Posts: 12
  • I love Tube amps
Hoffman Amps Forum image
Re: Altec 418 Question
« Reply #8 on: August 21, 2021, 04:15:54 pm »
Contact Great Plains Audio.  They bought out all the tooling, and records and should be able to tell you what you have based on the SN# if it hasn't been re-coned at some point.

Thanks!

https://greatplainsaudio.com/wp-content/uploads/2016/06/418-8H_lfspkr_spec_sheet.pdf
https://greatplainsaudio.com/wp-content/uploads/2016/06/418B_lfspkr_spec_sheet.pdf

 


Choose a link from the
Hoffman Amplifiers parts catalog
Mobile Device
Catalog Link
Yard Sale
Discontinued
Misc. Hardware
What's New Board Building
 Parts
Amp trim
Handles
Lamps
Diodes
Hoffman Turret
 Boards
Channel
Switching
Resistors Fender Eyelet
 Boards
Screws/Nuts
Washers
Jacks/Plugs
Connectors
Misc Eyelet
Boards
Tools
Capacitors Custom Boards
Tubes
Valves
Pots
Knobs
Fuses/Cords Chassis
Tube
Sockets
Switches Wire
Cable


Handy Links
Tube Amp Library
Tube Amp
Schematics library
Design a custom Eyelet or
Turret Board
DIY Layout Creator
File analyzer program
DIY Layout Creator
File library
Transformer Wiring
Diagrams
Hoffmanamps
Facebook page
Hoffman Amplifiers
Discount Program