More power!

astouffer · 2nd February 2012, 01:03 PM

For anyone who feels their current system is lacking in the power department I present this Audio Amplifiers

10KW of power and claims to be unused and hey its cheaper than an Ongaku or Wavac.

firechief · 2nd February 2012, 01:29 PM

I see you found Surplus Sales of Nebraska. Cool place and wouldn't you like to wander around in their wearhouse!

stoc005 · 2nd February 2012, 02:08 PM

I used to frequency sweep test sonar transducers using a multi-kilowatt audio amp like that one.

kevinkr · 2nd February 2012, 04:56 PM

Just what I need for a subwoofer amp..

I did note that the amount of space it requires is more than that occupied by a fairly large walk in closet, and it weighs over a ton too, so I suppose not..

10kW solid state gradient amplifiers that fit in less than 12U for rack mounting are sometimes available and would be well suited to anything this could be used for.

I suspect the best place for this item would be a museum somewhere.

I've always thought Surplus Sales of Nebraska was a bit overpriced (I live in the land of the MIT Flea) but has much cool stuff.

astouffer · 2nd February 2012, 05:20 PM

Some of their prices are way out there and some are pretty good. I wonder how they sell those odd military items that can only be used for one specific thing. Like these aircraft fans Fans & Blowers: 400 Hz Aircraft Blowers

Sure that Axivane Fan is listed for a fraction of what it cost uncle sam but who is going to buy it? Don't even look at their transformer prices.

Their tube price lists used to have 7027s listed really cheap, like way under what anyone else sold them for. Always thought about buying some and then reselling on ebay...

HollowState · 2nd February 2012, 06:05 PM

Robert Grinnell is one of the worst shysters in the business. Personal experience.

riccoryder · 2nd February 2012, 06:49 PM

Well maybe some of us can try solar power systems with inverters that run at 400 Hz. Then we could use smaller power transformers and caps, strange surplus bargains, and out homemade curve tracers could have a faster refresh rate. That huge amp got me thinking. I was looking at some big transmitting tubes a while back that could handle 40 Amperes anode current. A couple in series push-pull would make quite a killer but very simple OTL amp. The thing about filament current of hundreds of Amperes put me off a bit though, and no three phase power here either. And there's the matter of tougher speakers...and ears.

Austin Translation · 4th February 2012, 06:56 PM

I bet you could run the fan/blower from that big amp fed a 400hz sine wave. It may run fine at 60hz just slower tho...

2nd February 2012, 01:03 PM	#1
astouffer diyAudio Member Join Date: Jun 2004 Location: Pittsburgh, crumbling wasteland	More power! For anyone who feels their current system is lacking in the power department I present this Audio Amplifiers 10KW of power and claims to be unused and hey its cheaper than an Ongaku or Wavac.

2nd February 2012, 01:29 PM	#2
firechief diyAudio Member Join Date: Sep 2008 Location: Near Seattle Wa	I see you found Surplus Sales of Nebraska. Cool place and wouldn't you like to wander around in their wearhouse! __________________ "You can keep your insurance baby nothing is guaranteed" -Tom Petty

2nd February 2012, 04:56 PM	#4
kevinkr diyAudio Moderator Join Date: Sep 2004 Location: Boston, Massachusetts Blog Entries: 6	Just what I need for a subwoofer amp.. I did note that the amount of space it requires is more than that occupied by a fairly large walk in closet, and it weighs over a ton too, so I suppose not.. 10kW solid state gradient amplifiers that fit in less than 12U for rack mounting are sometimes available and would be well suited to anything this could be used for. I suspect the best place for this item would be a museum somewhere. I've always thought Surplus Sales of Nebraska was a bit overpriced (I live in the land of the MIT Flea) but has much cool stuff. __________________ www.kta-hifi.net

2nd February 2012, 06:05 PM	#6
HollowState diyAudio Member Join Date: Aug 2006 Location: Taxland, New Jersey	Robert Grinnell is one of the worst shysters in the business. Personal experience. __________________ "The supercomputer is technologically impossible. It would take all of the water that flows over Niagara Falls to cool the heat generated by the number of vacuum tubes required." ~ Professor of Electrical Engineering, New York University

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2nd February 2012, 02:08 PM	#3
stoc005 diyAudio Member Join Date: Feb 2007 Location: Midwest in the USA	I used to frequency sweep test sonar transducers using a multi-kilowatt audio amp like that one.

2nd February 2012, 05:20 PM	#5
astouffer diyAudio Member Join Date: Jun 2004 Location: Pittsburgh, crumbling wasteland	Some of their prices are way out there and some are pretty good. I wonder how they sell those odd military items that can only be used for one specific thing. Like these aircraft fans Fans & Blowers: 400 Hz Aircraft Blowers Sure that Axivane Fan is listed for a fraction of what it cost uncle sam but who is going to buy it? Don't even look at their transformer prices. Their tube price lists used to have 7027s listed really cheap, like way under what anyone else sold them for. Always thought about buying some and then reselling on ebay...

2nd February 2012, 06:49 PM	#7
riccoryder diyAudio Member Join Date: Dec 2011	Well maybe some of us can try solar power systems with inverters that run at 400 Hz. Then we could use smaller power transformers and caps, strange surplus bargains, and out homemade curve tracers could have a faster refresh rate. That huge amp got me thinking. I was looking at some big transmitting tubes a while back that could handle 40 Amperes anode current. A couple in series push-pull would make quite a killer but very simple OTL amp. The thing about filament current of hundreds of Amperes put me off a bit though, and no three phase power here either. And there's the matter of tougher speakers...and ears.

4th February 2012, 06:56 PM	#8
Austin Translation diyAudio Member Join Date: Jan 2011	I bet you could run the fan/blower from that big amp fed a 400hz sine wave. It may run fine at 60hz just slower tho...

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