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makiprov  
#1 Posted : Wednesday, May 19, 2021 8:20:14 AM(UTC)
makiprov

Rank: Member

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Greece
Location: athens

Hello
Just yesterday my technician finished my preamplifier.
The Joshua works fine EXPEPT a very annoying problem between 20 and 25 step.Instead of increasing the volume it dincreasing it and when at this step turn the volume down it increasing again.It's only one step but it is very annoying.Any thoughts ?My greetings from Greece
Gerasimos
Brian Donegan  
#2 Posted : Wednesday, May 19, 2021 4:05:13 PM(UTC)
Brian Donegan

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My initial guess is some mis-placed resistors.
makiprov  
#3 Posted : Wednesday, May 19, 2021 4:37:59 PM(UTC)
makiprov

Rank: Member

Groups: Member
Joined: 2/24/2021(UTC)
Posts: 4
Greece
Location: athens

Hello
thank you for your reply
I will double check
My greetings from Greece
Gerasimos
makiprov  
#4 Posted : Friday, June 11, 2021 3:56:33 AM(UTC)
makiprov

Rank: Member

Groups: Member
Joined: 2/24/2021(UTC)
Posts: 4
Greece
Location: athens

Hello
We double checked the preamp but the problem still remains now on two spots.
Using other preamps and amplifiers didn't have any problems.
Maybe it's time to send it to Twisted Pear Audio for a check.
My greetings from Greece
Gerasimos
makiprov  
#5 Posted : Sunday, September 12, 2021 9:25:50 AM(UTC)
makiprov

Rank: Member

Groups: Member
Joined: 2/24/2021(UTC)
Posts: 4
Greece
Location: athens

Hi
now in every step I move the attenuator it makes click click click click by it self
Any thought?



Brian Donegan  
#6 Posted : Wednesday, September 15, 2021 4:19:56 PM(UTC)
Brian Donegan

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Groups: Administration, Customer
Joined: 10/24/2006(UTC)
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Location: Massachusetts, USA

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Was thanked: 141 time(s) in 134 post(s)
How are you powering the Joshua Tree? I have seen this happen with too small of a transformer.
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