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Chip Amps Amplifiers based on integrated circuits

500 Watt Op Amps from Apex Microtechnology
500 Watt Op Amps from Apex Microtechnology
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Old 24th March 2004, 08:32 PM   #11
tg3 is offline tg3  United States
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Default Re: 6KW !!

Quote:
Originally posted by BStrum
Besides building an amp that doubles as a spot welder, what would you do with 6Kw?

Probably just enough to drive a Tumult to full xmax.
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Old 24th March 2004, 09:33 PM   #12
jackinnj is online now jackinnj  United States
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500 Watt Op Amps from Apex Microtechnology
Quote:
Originally posted by speaker
APEX has been building high-power chips for at least 12 years. I believe they are mostly used for motor control. I've always been curious how they might work on a subwoofer application as they spec most impressively but have not wanted to be the gweenya-pig either.

Has anyone tried them on audio applications?

speaker
The APEX devices are "tres cher" -- but every once in a while they show up on EBay. I was particularly interested in some of the very high voltage op-amps, but not enticed into a bidding war.
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Old 25th March 2004, 01:46 AM   #13
soundNERD is offline soundNERD  United States
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how much are those things anyway?
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Old 25th March 2004, 03:57 AM   #14
jasonc is offline jasonc  Canada
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Default PA05 Price (US Dollars)

Apex products may have multiple grades available

Price:
PA05 Op-Amp, 100V, 30A EA $279.08
PA05A Op-Amp, 100V, 30A EA $345.53

This seems a little pricey, but I think it is worth it, if you read up on this product they offer excellent protection from current and thermal overload. I read that the military uses Apex products, and I can see why.

1.) They are hermetically sealed.
2.) They have high G-Force ratings.
3.) They are high performance and very compact.

Perfect for sonar and weapons of mass destruction.
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Old 25th March 2004, 05:22 AM   #15
sam9 is offline sam9  United States
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the wbsite says US$275 for the cheap version.
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Old 25th March 2004, 07:06 AM   #16
Variac is offline Variac  Costa Rica
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500 Watt Op Amps from Apex Microtechnology
They have some lower power versions for about $60
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Old 25th March 2004, 11:46 AM   #17
soundNERD is offline soundNERD  United States
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Default Re: PA05 Price (US Dollars)

Quote:
Originally posted by jasonc


This seems a little pricey


1.) They are hermetically sealed.


A little pricy???

what does hermatically sealed mean anyway?
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Old 25th March 2004, 07:22 PM   #18
jasonc is offline jasonc  Canada
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Default Hermetic

Hermetic Means Sealed, airtight or enclosed.

Typically an amplifier of the equal in performace to the PA05 is made of discrete components that use huge amounts of PCB real estate.

Discrete amplifiers have many delicate components that can be damaged easier by High G-Forces and contamination.
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Old 25th March 2004, 08:43 PM   #19
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Default Re: Hermetic

Quote:
Originally posted by jasonc

Typically an amplifier of the equal in performace to the PA05 is made of discrete components that use huge amounts of PCB real estate.

Alright, who's going to be first?



speaker
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Old 25th March 2004, 09:19 PM   #20
jasonc is offline jasonc  Canada
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Default I will be first.

Speaker, I am not you typical audio enthusiast. I am not a vaccum tube hugging hippy. Down the road, amplifiers will simply be a slab of silicon with 3 pins going to the power supply the 4 pins to the PCI Express bus and two more pins out to the load (filterless).

For all you non believers, deal with it.
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