Double Bass Walter Woods Question

[Jumamoro]

Hey, I have bought my WW stereo amp, and I have found is makes a small "SsHh" sound one or two seconds after every time I turn it off, It doesn't bothers me, but I just would like to know if some body has experienced that, is that normal?

Thanks

 

[robgrow]

My WW amp does the same thing. I wouldn't worry about it.

 

[anonymous02282011]

Can you record the sound?

Slow it down and play it backwards . . . . . .


Seriously though, mine did the same thing. I never worried about it.

 

[Ric Vice]

Hey, I have bought my WW stereo amp, and I have found is makes a small "SsHh" sound one or two seconds after every time I turn it off, It doesn't bothers me, but I just would like to know if some body has experienced that, is that normal?

Thanks

Jumamoro,
Every Woods amp makes that sound at shutdown. I have no idea what it is, but it's perfectly normal.

Ric

 

[LarryR]

I have one of his late 80's / 90's MI-225's or some such, that upon power-on, does this:
put-put-put-put-put-put-put-put-put-put-put-put-
Then it goes on.
Sometimes it "puts" less or more. No idea why. I never worried about it.

 

[HamOnTheCob]

I have one his late 80's / 90's MI-225's or some such, that upon power-on, does this:
put-put-put-put-put-put-put-put-put-put-put-put-
Then it goes on.
Sometimes it puts less or more. No idea why.

That would be the typical startup noise of the flux capacitor on that particular model. No worries.

 

[LarryR]

Thank you Jacob! Now I can tell folks what that sound is, after they throw a fearful glance looking for cover before the explosion. "Don't worry, it's just the Flux Capacitor"! Funny, I always thought it was a voltage leak from the Framus.

I looked up Flux Capacitor.
"The Flux capacitor is the device that traditionally fails in a spacecraft or time machine."

 

[61pollmann]

Many power amplifiers make sounds after being shut down. Basically capacitors in the power supply store energy, and you're hearing them drain that energy. Really large power amps, like my Bryston 4B, can take a really long time to discharge. The power lights on the Bryston stay on for 20-30 seconds after shutdown, then you hear a harmless sound and the lights go out. It has a massive power supply. Modern lightweight amps like the Woods have switching power supplies with only modest capacitors. And none of them have flux capacitors. I'm waiting for Behringer to develop that technology.

 

[Jumamoro]

Thank you all guys for the reply, I was starting to worry, but now I know there is no problem

 

[Jumamoro]

Jumamoro,
Every Woods amp makes that sound at shutdown. I have no idea what it is, but it's perfectly normal.

Ric

Thanks Ric

 

[robgrow]

That would be the typical startup noise of the flux capacitor on that particular model. No worries.

Very funny!

 

[bribass]

I have one his late 80's / 90's MI-225's or some such, that upon power-on, does this:
put-put-put-put-put-put-put-put-put-put-put-put-
Then it goes on.
Sometimes it puts less or more. No idea why. I never worried about it.

FWIW-My WW MI-225 from the mid 80's does the same exact thing.

BG

 

[Eric S]

...makes a small "SsHh" sound one or two seconds after every time I turn it off...

That's the sound of outstanding components and craftsmanship going to sleep at night...


.

 

[chris dammann]

does anyones do this when cutting on? mine did tonight and scared the s!!!t out of me and the audience tonight... but worked like a charm the whole night.

 

[Ric Vice]

does anyones do this when cutting on? mine did tonight and scared the s!!!t out of me and the audience tonight... but worked like a charm the whole night.

Chris,
I seem to recall that my first MI-100-8 did that when it started up.
If you're worried about it you might want to call Walter. I have his number around somewhere in my files. P.M. me if you need it

Ric

 

[robgrow]

All amplifiers use some type of power supply, whether it's a traditional linear type or a switch-mode type. At power up the power supply charges, and at power down the power supply supply discharges. This usually creates some noise that can be heard through the speaker(s) to some degree. It's usually nothing to worry about.

 

[fdeck]

The good news is that by the time that the power supply has discharged to the point where the amplifier loses control, there is usually insufficient flux remaining in the capacitors to damage the speakers.