Hiss in speakers without an audio source playing

[supernov4]

Celestra VA210 High End Amplifier - AudioStatus

We wish to introduce you this HI-END amplifier with some technical descriptions:

audiostatus.lt

Signal to noise ratio 120db
You need a couple of those babies

 

[tbuckvich]

Celestra VA210 High End Amplifier - AudioStatus

We wish to introduce you this HI-END amplifier with some technical descriptions:

audiostatus.lt

Signal to noise ratio 120db
You need a couple of those babies

Can’t open the link in the U.S. lol

 

[supernov4]

Can’t open the link in the U.S. lol

Why? Tarrifs?
Celestra va210
They will serve you well, don't worry

 

[1aespinoza Premium Member]

Yeah I did the big three and it’s a good ground. I’ve even taken the amp out of the truck and used a separate battery straight to it and it still happened, I just don’t want to keep buying amps if it’s something I’m doing wrong

If the hiss is still present without a signal and no gain, then the amp is bad or poorly built. If a friend has an amp you can borrow, try it out.

 

[tbuckvich]

If the hiss is still present without a signal and no gain, then the amp is bad or poorly built. If a friend has an amp you can borrow, try it out.

Okay, what are the chances I’ve gotten three bad amps in a row? I want to make sure I’m not doing something wrong before I buy another one.

 

[Jimi77 Premium Member]

Okay, what are the chances I’ve gotten three bad amps in a row? I want to make sure I’m not doing something wrong before I buy another one.

Is the hiss there without the RCAs hooked up?

 

[1aespinoza Premium Member]

Okay, what are the chances I’ve gotten three bad amps in a row? I want to make sure I’m not doing something wrong before I buy another one.

Seems improbable, so a few questions.
What do you mean when you said "amp is powered on from the speakers", "took the amp out and hooked it to a different battery", and "I hook one up to my trucks factory speaker wires it plays just fine"?

 

[Jimi77 Premium Member]

Deleted

 

[tbuckvich]

Is the hiss there without the RCAs hooked up?

Yes

 

[tbuckvich]

Seems improbable, so a few questions.
What do you mean when you said "amp is powered on from the speakers", "took the amp out and hooked it to a different battery", and "I hook one up to my trucks factory speaker wires it plays just fine"?

I took the amp out of the truck and hooked it up to a spare battery to see if it’s a ground problem or if a computer in the truck was messing with it, and I literally hooked one of the mids up to a factory door speaker input and it didn’t hiss at all

 

[Jimi77 Premium Member]

I took the amp out of the truck and hooked it up to a spare battery to see if it’s a ground problem or if a computer in the truck was messing with it, and I literally hooked one of the mids up to a factory door speaker input and it didn’t hiss at all

So that seems to point to something in the truck. Try moving the amp.

 

[Jimi77 Premium Member]

Is the amp bolted to metal?

 

[tbuckvich]

So that seems to point to something in the truck. Try moving the amp.

It still had the hiss out of the truck. I have moved it before with no change. I’m thinking this amp is bad aswell, but I want to know why they keep doing this before I buy a different one

 

[Jimi77 Premium Member]

It still had the hiss out of the truck. I have moved it before with no change. I’m thinking this amp is bad aswell, but I want to know why they keep doing this before I buy a different one

Try grounding the case. Might just be a noisy design.

 

[tbuckvich]

Try grounding the case. Might just be a noisy design.

I’ll try that