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XM5’s Active variable crossfeed

post #1 of 7
12/1/08 at 9:16pm
Thread Starter 
I know that the Practical Devices XM4 and XM5 have active variable crossfeed, but I need some more details from those who are in the know. I have an XM4 (sweet!), but I'm thinking of upgrading to the XM5 because of the new features (sweeter!). Is the crossfeed the same on the new XM5?

This question would ideally be answered by someone who owns both of 'em.
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post #2 of 7
12/12/08 at 5:57pm
Thread Starter 
A reliable anonymous source has informed me that the crossfeed on the XM5 is implemented in the same way as on the XM4. That being said, I don't think that's exactly the case... I've been doing a little research on Practical Devices' web page and it is different.
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post #3 of 7
12/12/08 at 6:58pm
The crossfeed on the XM5 is not the same as the crossfeed on the XM4.
The crossfeed on the XM4 and XM5 are activated identically: there's a switch on the front to activate it, and a pot on the back to adjust it from "near-stereo" to "mono."

But the XM5's crossfeed was updated so that it's active. There's an additional powered opamp on the crossfeed module. One of the benefits of this is there is no change in attenuation when you activate the crossfeed. If this extra amp wasn't there, there'd be a change in volume when you hit the switch. The feedback I've gotten from folks on this has been pretty good.

[As far as I know, there are no other portables that have an active variable crossfeed. That's why I built it!]
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post #4 of 7
12/12/08 at 8:54pm
It looks like a lot of thought was put into the amp. Great stuff coming around.
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post #5 of 7
12/18/08 at 8:17pm
Thread Starter 
Do any other portables have active variable crossfeed, or is it just XM5?
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post #6 of 7
12/18/08 at 11:57pm
Quote:
Originally Posted by Keppel
Do any other portables have active variable crossfeed, or is it just XM5?



Quote:
Originally Posted by MaxAmplitude View Post

[As far as I know, there are no other portables that have an active variable crossfeed. That's why I built it!]

I don't know of any either. I'm looking forward to trying it out...any day now!
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post #7 of 7
12/19/08 at 5:02pm
Quote:
Originally Posted by Keppel View Post
Do any other portables have active variable crossfeed, or is it just XM5?
Based on the table diagram on their website, it looks like that the XM5 is the only one with that feature.
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