Sunfire TGA-7401 vs. Parasound Halo A51 vs. Wyred 4 Sound MC5x500 - Page 2 - Home Theater Forum and Systems - HomeTheaterShack.com

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post #11 of 12 Old 06-22-12, 10:42 AM Thread Starter
Shackster
 
Join Date: Mar 2009
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Re: Sunfire TGA-7401 vs. Parasound Halo A51 vs. Wyred 4 Sound MC5x500

Ok, thanks.

Anything on the second part though?

Quote:
I have one more question though. On the Sunfire Web site, the TGA-7401 is spec'd to 120 amps of current per channel while weighing 46 lbs. I had an e-mail discussion with Parasound regarding their NewClassic 5250 v.2 and asked them how it was possible for the Sunfire to have so much more current than the Parasound while weighing so much less. They said that they would have to "question" the Sunfire's specs on current by weight is part of the equation when it comes to current. For reference, the Parasound Halo A51 has 60 amps of current per channel while weighing 80 pounds. The Sunfire TGA-7401 has double the current capability while weighing about half as much. Are Sunfire's specs accurate or is something up? I am sure Parasound's input on this matter would be bias so I am looking for an unbiased point-of-view.
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post #12 of 12 Old 06-22-12, 10:45 AM
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Re: Sunfire TGA-7401 vs. Parasound Halo A51 vs. Wyred 4 Sound MC5x500

As for the Sunfire/Bob Carver Designs, he has been using what he calls a Tracking Downconverter. It is a Switching Power Supply Design that predates designs like the Bang & Olefsen ICEPower, Behringer, et al.
Where a great deal of the electricity a Class AB or Class A draws becomes heat, Amplifiers like the Sunfire are claimed to be 95% efficient. As with all things, there are those who find that Class D Amplifiers are best used for applications like Subwoofers, but that perception really seems to be changing.

HT
Speakers: Martin Logan Vantage (Mains), Martin Logan Stage (Center), Martin Logan Vista (Surrounds), Martin Logan Montages (Surrounds) Hsu Research VTF-15h MK2, Martin Logan Descent i (Subwoofer)
Amplification: Aragon 8008bb, Parasound HCA-3500, Parasound HCA-2205 AT, Parasound HCA-1000a
AVR/SSP: Denon AVR-4520CI
Electronics: OPPO BDP-93
Gaming Consoles: Sony PS4, Xbox 360 S (250 gb)
Display: Panasonic TC-P65ZT60, Sony KDL-55EX500, Sony KD-34XBR910
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a51 , halo , mc , parasound , sound , sunfire , tga7401 , wyred

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