Getting an annoying sound from my amp.
Runs quiet but if I play anything above a whisper I'm hearing a brittle hissing sound with the notes. Like someone shaking round the broken filament in s light bulb.
Microphonic tube! If so which one? How to tell?
Any other causes of that sound?
Princeton reverb ?microphonic sound
Moderators: Slowy, Capt. Black
-
StrummersOfThunder
- Vintage Post Junkie
- Posts: 7193
- meble-kuchenne.warszawa.pl
- Joined: Sun Jul 15, 2012 2:23 pm
- Has liked: 815 times
- Been liked: 1304 times
-
StrummersOfThunder
- Vintage Post Junkie
- Posts: 7193
- Joined: Sun Jul 15, 2012 2:23 pm
- Has liked: 815 times
- Been liked: 1304 times
-
Jay
- Vintage Post Junkie
- Posts: 7793
- Joined: Sat Sep 25, 2010 9:35 pm
- Has liked: 1633 times
- Been liked: 1297 times
Re: Princeton reverb ?microphonic sound
I quite like that sound. 
..... but the reverb hum at the end was horrible!
..... but the reverb hum at the end was horrible!When faced with quality, I recognise it every time.
-
GrantB
- ADMIN
- Posts: 15893
- Joined: Fri Oct 31, 2003 9:04 am
- Location: Where I need to be
- Has liked: 1358 times
- Been liked: 2097 times
Re: Princeton reverb ?microphonic sound
Tap each tube gently and see/listen for which one makes the most noise
"Man is the most insane species. He worships an invisible god and destroys a visible nature. Unaware that this nature he's destroying is this god he's worshipping." - Hubert Reeves
-
GrantB
- ADMIN
- Posts: 15893
- Joined: Fri Oct 31, 2003 9:04 am
- Location: Where I need to be
- Has liked: 1358 times
- Been liked: 2097 times
Re: Princeton reverb ?microphonic sound
Might not be microphones though...just rattling like heck
"Man is the most insane species. He worships an invisible god and destroys a visible nature. Unaware that this nature he's destroying is this god he's worshipping." - Hubert Reeves
-
Slowy
- Vintage Post Junkie
- Posts: 22787
- Joined: Wed Sep 09, 2009 4:13 pm
- Location: Orcland
- Has liked: 1018 times
- Been liked: 2482 times
Re: Princeton reverb ?microphonic sound
Was thinking the same thing; great tone!jvpp wrote:I quite like that sound.
Strummers, lightly tap each tube with a pencil while the amp's running. Should point you in the right direction.
Beyond a critical point within a finite space, freedom diminishes as numbers increase. This is as true of humans as it is of gas molecules in a sealed flask. The human question is not how many can possibly survive within the system, but what kind of existence is possible for those who so survive.
-
StrummersOfThunder
- Vintage Post Junkie
- Posts: 7193
- Joined: Sun Jul 15, 2012 2:23 pm
- Has liked: 815 times
- Been liked: 1304 times
-
GrantB
- ADMIN
- Posts: 15893
- Joined: Fri Oct 31, 2003 9:04 am
- Location: Where I need to be
- Has liked: 1358 times
- Been liked: 2097 times
Re: Princeton reverb ?microphonic sound
Or two....
"Man is the most insane species. He worships an invisible god and destroys a visible nature. Unaware that this nature he's destroying is this god he's worshipping." - Hubert Reeves
-
StrummersOfThunder
- Vintage Post Junkie
- Posts: 7193
- Joined: Sun Jul 15, 2012 2:23 pm
- Has liked: 815 times
- Been liked: 1304 times