New: Sierra-2EX V2!!!

[curtis]

Can you tell the difference between the sound from the Purifi and Hypex modules? If so, what are you hearing that's different?

I'm asking because I'm trying to decide on which way to go with a Buckeye Amps three channel. I can't come up with any negatives for either. Both versions are supposed to be scary flat and transparent.

Asked another way, why not five of one or five of the other in your VTV? Why did you make the 3/2 split?

I have never compared the different amp channels. I can tell you that I do think the front channels sound a bit more transparent than with my old 20 year old ATi 1505, but that can be wishful thinking.

VTV doesn't make a 5 channel Purifi amp, neither does Buckeye. I thought about doing a 3-channel amp and a 2-channel amp, but ultimately wanted one-chassis and didn't think I needed to spend extra on Purifi for the surrounds.

[racrawford65]

Curtis, curious if you asked either if they could do a custom 5 channel Purifi amp? Maybe using a six channel case with one set of outputs/inputs "blocked" off? Or maybe it's a size or power supply constraint?

[curtis]

Curtis, curious if you asked either if they could do a custom 5 channel Purifi amp? Maybe using a six channel case with one set of outputs/inputs "blocked" off? Or maybe it's a size or power supply constraint?

I actually, on a whim, asked Buckeye. Currently no plans, but that might change later in the year.

I was heading down the path of the newer/higher power Purifi module for the fronts, and the lower power for the surrounds. Then I came to my senses.

[racrawford65]

LOL. Come on, buy some more new equipment!

[curtis]

LOL. Come on, buy some more new equipment!

As I have said before, you are a bad influence!

[bkdc]

The issue with a 5-channel Purifi amp is the actual power supply/wattage.

For the 1ET400A, you’re talking about being able to handle 400watts/channel or 450 watts at 2ohms. That’s over 2000 watts. That exceeds the safe current limit for a 20 amp line with a 5-20P plug (most home electrical lines are 15 amp rated with a 5-15P). Just because the amplifier is light doesn’t mean it doesn’t require juice. Your circuit breakers would trip if you were approaching the limits (which is highly likely as you would be needing to drive five speakers to ear-bleeding levels). From a practical perspective, you can connect three 1ET400A to a Hypex SMPS 1200A400 so it is cost effective to do a two channel or three channel amplifier with amplifier modules connected to a single switch mode power supply unit and not worrying about whether you draw more than 15 amps.

This is also the reason why the reason why the 1ET7040SA comes only as a monoblock. It can supply 950 watts at 2 ohms! The 15 amp home line won’t handle 1900 watts safely (not that you would ever draw that much and bust your eardrums… you’d probably blow your speakers first).

If Buckeye wants to design a multi-channel speaker two separate power connections designed for two separate 20 amp lines……. This is not a practical solution.

[racrawford65]

I believe D-Sonic has options for 2 power connections but their amps are much pricier.

[curtis]

The issue with a 5-channel Purifi amp is the actual power supply/wattage.

I figured it was some sort of power issue.

[bkdc]

I believe D-Sonic has options for 2 power connections but their amps are much pricier.

D-Sonic uses Pascal modules, I believe. They offer crazy power but measure worse than Ncore or Purifi, but the poorer measurement does not translate into any audible differences. The state of the art is Bruno Putzey’s offspring (Ncore, NcoreX, Purifi).

Who the @#$%@#% has a modern speaker needing 1500 watts a piece. (Pascal L-PRO2S running in BTL mode). They are for powering subwoofers. Big ones.

Edited : BTW, I listened to the D-Sonics about seven years ago…. I don’t think the modules have changed….. and there was an annoying audible hiss heard from 2 feet away. This was the same annoying issue I noticed with older ICEpower amplifiers. I hope things have changed. I LOVE the sound of complete silence from the Purifi’s. I can stick my ear to the driver and hear nothing.