F5 Turbo ............. if only !!!!!! - diyAudio
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Old 16th January 2012, 03:21 AM   #1
a.wayne is offline a.wayne  United States
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Default F5 Turbo ............. if only !!!!!!

Damn would be nice .....

Pass Labs’ engineer Wayne Colburn insisted that the name of their latest amplifier, the Xs, was not a pun. He spent over an hour detailing the 3-year design project that culminated in the company's $85,000/pair, solid-state, two-chassis-per-channel, class-A amplifier. Leaning on the 4.5-foot stack of the amplifier's stereo configuration, Wayne spoke about how the design was based on the results of an examination of transfer characteristics of a diverse set of gain devices, including tubes and SITs (silicon-carbide devices that are exclusive, we believe, to Pass Labs for use in audio). The output stage was designed to reproduce the transfer characteristics preferred by a panel of listeners, who lived with a variety of different output stages for a lengthy period of time.

Each Xs channel has two chassis, one for the power supply and the other for signal amplification. The amplifier acts as a voltage source, and is rated at 300W into 8 ohms, 600W into 4 ohms, and 1200W into 2 ohms. It is biased to ensure make certain that the amplifier remains in class-A mode into all loads. Each channel has 122 output devices with a total rating of 10kW, and the extensive heatsinking allows the Xs 300 to deliver 2kW into a load "all day long."

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Last edited by a.wayne; 16th January 2012 at 03:27 AM.
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Old 16th January 2012, 04:58 AM   #2
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At that power, in class A, who needs central heating?!

Pass for president!!!.
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Old 16th January 2012, 05:22 AM   #3
qusp is offline qusp  Australia
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Nelson, you are the devil, better not let greenpeace get a hold of this that man better pray there isnt an earthquake, he could be crushed under the weight of a stereo amplifier. normally when people talk about the 'weight of sound' i dont think they have this in mind.

122 devices per channel? wow
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Old 16th January 2012, 10:51 AM   #4
Zen Mod is offline Zen Mod  Serbia
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Originally Posted by turboyam View Post

Pass for president!!!.
only if country can be organized that Pass doesn't need to work more and work anything else than in very moment .

so - let Pass be a King , and let crooks be a ....... politician

my Papa is smarter than your Nelson !
clean thread; Cook Book;PSM LS Cook Book;Baby DiyA ;Mighty ZM's Bloggg;Papatreasure;Papa...© by Mighty ZM
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Old 16th January 2012, 02:07 PM   #5
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Those would drive the Ion Cloud really well.
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Old 16th January 2012, 05:08 PM   #6
labjr is offline labjr  United States
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Just matching output devices is a huge task.
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Old 16th January 2012, 11:49 PM   #7
wayne is online now wayne  United States
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Not that hard to match it is only 112 transistors not 122. I may have slipped with all that talking at a show.
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Old 17th January 2012, 12:04 AM   #8
a.wayne is offline a.wayne  United States
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Errr OK, much easier now ....

I'm surprised you guys would attempt to market your own speakers along side the amplifiers, usually a no,no, as it usually chuffs off Speaker manufacturers and stop them from using Your products when promoting.
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Old 17th January 2012, 12:04 AM   #9
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No problem, you think an 8% discount is open for negotiation ?
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Old 17th January 2012, 12:06 AM   #10
labjr is offline labjr  United States
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There's pictures on the passlabs website. Looks like Neutrik Powercon 32 Amp power connectors. Nice stuff.
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