Welcome To the Hoffman Amplifiers Forum

September 06, 2025, 01:27:21 pm
guest image
Welcome, Guest. Please login or register.
-User Name
-Password



Hoffman Amps Forum image Author Topic: Mod filters  (Read 2646 times)

0 Members and 1 Guest are viewing this topic.

Offline dude

  • Level 3
  • ***
  • Posts: 1875
Hoffman Amps Forum image
Mod filters
« on: December 11, 2022, 11:22:05 am »
Are Mod Electrolytic Capacitors "decent" for our builds, seems a lot less expensive then F & T's.  I've notice component pricing is going up like everything else.  I use mostly Mallory 150 caps in my Marshall type builds, have used them in Fender types too with good results. Is it really worth spending big bucks for all these boutique coupling caps out there...? I mean just the coupling and tone caps can be close $100 more than Mallory 150's. Just wondering what's your take on all these $8 to $10 coupling caps..?  Worth it..?
 https://www.tubesandmore.com/products/capacitor-mod-electronics-aluminum-electrolytic-105-c-axial-lead
If it ain't broke, don't fix it.

Offline thetragichero

  • Level 3
  • ***
  • Posts: 582
Hoffman Amps Forum image
Re: Mod filters
« Reply #1 on: December 11, 2022, 11:38:31 am »
i use em mostly because they look cool and are inexpensive. i haven't had any issues so far

Offline bmccowan

  • Level 3
  • ***
  • Posts: 1744
  • Better builder than player
Hoffman Amps Forum image
Re: Mod filters
« Reply #2 on: December 11, 2022, 11:53:48 am »
I mostly use F&Ts for filters. They do not seem that expensive to me - Atoms are too $$. I have used the 16uf 475V Mojotone Lytic caps, mostly because they are small. I suspect they are the same as the MODs? So far so good. Tone caps - I use decent but reasonable priced caps - 150s, Xicons, recently some Panasonics, various ODs, and some ceramic discs. My crappy ears cannot tell much difference between them. But lordy the whole cap industry is out of control. Hard to tell who might be making what these days.
Mac
“To my surprise, when I opened my eyes, I was the victim of a great compromise.”
John Prine

Offline Latole

  • Level 4
  • *****
  • Posts: 2522
Hoffman Amps Forum image
Re: Mod filters
« Reply #3 on: December 13, 2022, 05:23:22 am »
I mostly use F&Ts for filters. They do not seem that expensive to me - 

I agree. Generaly speaking you have for what you pay.
On good amps ( vintage Fende Marshall... ) I will use the know good one; F&T
On less expensive amps, I may try those MOD.

On many hundreds $ amps if not $1 or $2K I will not look to save few $ if I don't know the quality of the parts.

Offline HotBluePlates

  • Global Moderator
  • Level 5
  • ******
  • Posts: 13127
Hoffman Amps Forum image
Re: Mod filters
« Reply #4 on: December 14, 2022, 05:44:34 am »
Are Mod Electrolytic Capacitors "decent" for our builds, seems a lot less expensive then F & T's.  ...

When you look at their data sheet, you see a 2000-hour life at 105ºC.

That temperature is higher than we'd typically see in an amp, but lifespan is shorter than available with other parts.

Axial caps are relatively expensive; PC board construction favors radial caps, so they're higher volume products & cheaper. 

Some radial caps have 5-6x the claimed lifespan (10-12,000 hours at 105ºC) yet are half the price.  Some other caps are available for half that price, but you gotta buy 3-5000 caps in one order.

Many "guitar amp" filter caps don't even have data sheets, because their performance is poor relative to caps used in most commercial products.

 


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