Thumps on shut down (newbie amp questions)

[nhpm510]

Hi, I am new to the amp/pre-amp world and am looking to power my speakers with a Carver TFM-45. It is for a 2.1 system in the masterbedroom.

The guy selling it said the following: "The only problem it ever had (and still has) is that is thumps the speakers when the power is turned off."

My question is: Can this/will this cause damage to the speakers?

Also, I am using my Denon AVR-2500 as the pre-amp. Is this doing a disservce to the amp's "clean power"?

Thanks for the insights.

Paul

 

[MDS]

Thumps are usually caused by the order in which the components power up/down. On power up you want the receiver/pre-amp to turn on before the amp so that there is a signal present when the amp turns on and starts amplifying (otherwise it will amplify noise). You want the opposite for shutdown - turn the receiver/pre-amp off first and then the amp.

Many people will program on/off macros into a universal remote or use a power bar with delayed turn on or programmable startup to do it.

 

[majorloser]

I'm not sure if your pre/pro and amp have the ability to use the 12V triggers but it guaranties the items will be started in the right sequence.

 

[nhpm510]

Thks for the reply, but shouldn't..

you being testing those Behringers yet??!!!!
Eager to hear your findings.

I'll also infer that it shouldn't cause speaker damage (if I can't get the sequence right with the remote). I am switching to a vastly more costly pair of speakers and don't want to cause any issues.

PM

 

[AVRat]

All the old Carver amps do it. I've had mine hooked up to the same speakers for 15 years, no problem.

 

[majorloser]

you being testing those Behringers yet??!!!!
Eager to hear your findings.

Yeah, yeah, yeah.......

I'm working on it. Still waiting on a few more items to arrive. Should be up before this weekend. I waited this long, what's a few more days.

 

[wire]

All the old Carver amps do it. I've had mine hooked up to the same speakers for 15 years, no problem.

Hi
What model do you run , might it be the 1.0 T amp . ?

 

[surveyor]

All the old Carver amps do it. I've had mine hooked up to the same speakers for 15 years, no problem.

I too have 2 ea. Carver M-1.0t and 1 ea. TFM-24 amps that thump with on/off. I used them from 1989 to 2005 and never harmed a speaker. I still have them and us them in a rotation mode in a spare bedroom/computer room. I rotate them bi-monthly to exercise the capacitors. I now use an Outlaw Audio Model 770 in my living room.
I have always have turned the volume all the way down prior to shutting down any audio gear.

 

[wire]

I too have 2 ea. Carver M-1.0t and 1 ea. TFM-24 amps that thump with on/off. I used them from 1989 to 2005 and never harmed a speaker. I still have them and us them in a rotation mode in a spare bedroom/computer room. I rotate them bi-monthly to exercise the capacitors. I now use an Outlaw Audio Model 770 in my living room.
I have always have turned the volume all the way down prior to shutting down any audio gear.

Nice equipment .
I read on the Carver forum , that the M 1.0T's are known to do that thump thing . I didnt know the the TFM-24 did that also .
I have a Bryston 4b that thumps abit , but my TFM-35 there is no nothing turning it off , just a click from the button .
Im not a expert with the Carver Amps , maybe they are known to do it .

 

[surveyor]

Nice equipment .
I read on the Carver forum , that the M 1.0T's are known to do that thump thing . I didnt know the the TFM-24 did that also .
I have a Bryston 4b that thumps abit , but my TFM-35 there is no nothing turning it off , just a click from the button .
Im not a expert with the Carver Amps , maybe they are known to do it .

Thanks!
The TFM-24 may not thump. I wouldn't know because I ran the M-1.0ts in bridged mono to my front speakers and the TFM-24 in stereo to two rear speakers. So, the thump was probably just the M-1.0ts. They are very good amps though in my opinion, powerfull as hell!

 

[wire]

Thanks!
The TFM-24 may not thump. I wouldn't know because I ran the M-1.0ts in bridged mono to my front speakers and the TFM-24 in stereo to two rear speakers. So, the thump was probably just the M-1.0ts. They are very good amps though in my opinion, powerfull as hell!

No doubt , youve got some nice clean power there .
I run my TFM-35 in my bedroom with a CT-7 , wow what a sound stage .

 

[surveyor]

No doubt , youve got some nice clean power there .
I run my TFM-35 in my bedroom with a CT-7 , wow what a sound stage .

I have and use the CT-7 pre-amp also. It's a very good pre-amp and the TFM-35 is an awesome combinition.
Congtats