Welcome To the Hoffman Amplifiers Forum

September 06, 2025, 09:23:45 am
guest image
Welcome, Guest. Please login or register.
-User Name
-Password



Hoffman Amps Forum image Author Topic: Installing a Metropolis digital effects loop PCB  (Read 2476 times)

0 Members and 1 Guest are viewing this topic.

Offline Pete1950

  • Level 1
  • *
  • Posts: 7
  • I love Tube amps
Hoffman Amps Forum image
Installing a Metropolis digital effects loop PCB
« on: October 09, 2024, 01:22:24 pm »
I need to know where to connect the input and output wires to an AA1164 Princeton Reverb ckt. A simple drawing or explanation will suffice. Thanks.

Offline Dave

  • Level 3
  • ***
  • Posts: 595
Hoffman Amps Forum image
Re: Installing a Metropolis digital effects loop PCB
« Reply #1 on: October 09, 2024, 01:29:54 pm »
What do the instructions say?


Dave

Offline Pete1950

  • Level 1
  • *
  • Posts: 7
  • I love Tube amps
Hoffman Amps Forum image
Re: Installing a Metropolis digital effects loop PCB
« Reply #2 on: October 09, 2024, 02:26:46 pm »
I've installed a few in amps with LTP PIs, but none with cathodyne PIs. Instructions written for LTP PIs only. An internet search yields essentially nothing.  Pete

Offline Willabe

  • Global Moderator
  • Level 5
  • ******
  • Posts: 10524
Hoffman Amps Forum image
Re: Installing a Metropolis digital effects loop PCB
« Reply #3 on: October 09, 2024, 03:02:45 pm »
Can you post a schematic of the loop and the instructions that came with it? (I saw the instructions are for a LTPI.)

Offline Dave

  • Level 3
  • ***
  • Posts: 595
Hoffman Amps Forum image
Re: Installing a Metropolis digital effects loop PCB
« Reply #4 on: October 09, 2024, 05:12:44 pm »
So, if it goes in between the coupling cap from the last gain stage and the input of the PI, I don't see how it would make any difference whether it was a LTPI or a Cathodyne. But then again, what do I know?


Dave

Offline Pete1950

  • Level 1
  • *
  • Posts: 7
  • I love Tube amps
Hoffman Amps Forum image
Re: Installing a Metropolis digital effects loop PCB
« Reply #5 on: October 10, 2024, 03:42:13 pm »
I'm hoping that it's that straightforward! I'll give it a shot. Thx.  Pete

 


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


password