Emu XL-7 & MP-7 User's Group

I got out the screwdriver & did some checking.  

Rev B P2K motherboard has AD18619851 converters. 
REV C P2K has AK4324VF converters.  
Rev A MP-7 has the AK4324VF as well.  

There are other changes between the Rev B & Rev C, but I'm not sure what the significance of them is.  Rev C P2K and Rev A Command Station seem to have a lot in common.



--- On Tue, 1/15/13, xl7@yahoogroups.com <xl7@yahoogroups.com> wrote:

> From: xl7@yahoogroups.com <xl7@yahoogroups.com>
> Subject: [xl7] Digest Number 3118
> To: xl7@yahoogroups.com
> Date: Tuesday, January 15, 2013, 9:05 AM
> There is 1 message in this issue.
> 
> Topics in this digest:
> 
> 1. P1000 / P2000 / P2500 / Command Station - Hardware >
> Differences?    
>     From: rogers t
> 
> 
> Message
> ________________________________________________________________________
> 1. P1000 / P2000 / P2500 / Command Station - Hardware >
> Differences?
>     Posted by: "rogers t" winky_dinglehoffer@...
> winky_dinglehoffer
>     Date: Mon Jan 14, 2013 12:37 pm ((PST))
> 
> I will attest to this much:  the power supplies on the
> P2K/P1K modules.  The very late ones appear to have
> better caps and are shielded.  There are also some
> component changes on the main boards--might possible be
> different converters.  I'm not sure how much, if any,
> audible difference there is.  
> 
> On a purely superficial level, some Command Stations say
> "Made in the USA" while some others say "Made in the
> China".  
> 
> I also wonder how the keyboard models (PK6 etc.) differ from
> the others.  
> 
> 
> 
> 
> 
> Messages in this topic (1)
> 
> 
> 
> 
> 
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Very cool post. I always wondered about this kind of stuff. I've read that E-MU upgraded their converters and CPUs during the course of production but was never quite sure if it was marketing hype or what. Do your motherboards have what looks to be another ram/rom slot on the opposite end from the 4 sound roms? I noticed it on my Vintage Pro, but not my XL-7. I wonder what it is for?
 

--- In xl7@yahoogroups.com, rogers t  wrote:
>
> I got out the screwdriver & did some checking.  
> 
> Rev B P2K motherboard has AD18619851 converters. 
> REV C P2K has AK4324VF converters.  
> Rev A MP-7 has the AK4324VF as well.  
> 
> There are other changes between the Rev B & Rev C, but I'm not sure what the significance of them is.  Rev C P2K and Rev A Command Station seem to have a lot in common.
> 
>