Hi forum,
half of the ram in my fully expanded Akai S950 is no longer work. I have been moving the unit around a bit so I am hoping its just come unseated or the contacts need cleaning. As I did not install the added ram myself I have no idea which screws etc,to undo, and where the ram is located. I have been searching the internet for a PDF or info on how to install ram in this unit but could find nothing. As the S950 is a later version of the S900,any info about doing this should be the same as for both units. Can anybody help.

Regards

Peter

This shows the inside of an S950, but I cannot see where the memory is!

http://www.flickr.com/photos/equaliser/4004500334/in/set-72157622567849036 /

This shows the ram expansion on its own.

http://www.mpchunter.com/s950/akai-s950-memory-expansion/

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On start up, the 900 will display available memory. However, this will be in kilo words.

So, for example, on start up, my 950 displays 1536KW.

hth

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I'm All Ears.

Thanks for the info and pictures.
I bought the unit new from a shop and they installed the extra ram. Therefore I do not know the best way to get in the unit to check the ram. Any suggestions.


Peter

It will be simple to open up. Just unscrew the screws around the case and lift of the grey top cover. As Ken has pointed out, what Kwords are available?

1536Kwords = 2.25MB
1024Kwords = 1.5MB
512Kwords = 0.72MB

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Quote Mud on the road:

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Thanks for the info and pictures.
I bought the unit new from a shop and they installed the extra ram. Therefore I do not know the best way to get in the unit to check the ram. Any suggestions.

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Well, my suggestion was to check the RAM at start up. That way you'll know how much is being accessed. Then you can physically inspect. Here's a thread from another forum with more info about locating the RAM:

http://www.mpc-forums.com/viewtopic.php?f=11&t=152812

The RAM is circled in Red

http://i196.photobucket.com/albums/aa18/Petepipe/RAM.jpg

AS you can see, there are many points to check for Bad RAM. I don't think this is a seatign issue as they are all soldered to the board.

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I'm All Ears.

Edited by ken long (23/03/12 10:12 AM)

That is the S900 though isn't it, which has fixed memory. I've never opened my S950 and it sits at the bottom of a pile of other racks, so I can't exactly get into mine easily. Mine has 1024Kwords, so there is a presumably an expansion card in it, but having looked at the Flikr set above, it seems that one has the same amount of RAM, but no obvious expansion in it.

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I remember installing the RAM myself - but that was a long time ago. I am pretty sure that there was a panel that could be removed from the bottom on the machine, and the RAM was on cards that stood up like the cards you put in a P.C. I cant see the bottom of mine, (being on the bottom!) but this is what I can remember...

( I found the manual - type written with hand drawn diagrams ! - was it that long ago?)

Mine has been known to have hissy fits, and loose its memory, but checking the start up it always seams to return.

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I'm not very familiar with the S-950 but I have found a picture of the RAM expansion if that helps, to me it looks very very similar to the one fitted into the MPC-60

Quote Richie Royale:

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That is the S900 though isn't it, which has fixed memory..

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Yes, that's right. I misread OP's post. I thought he was talking about a 900. VJ, don't think they are the same though look similar.

OP, check the KW on startup. If it's 1536, you have max RAM. if it's less and you've got the expansion (will be separate board like VJ's picture), then try reseating the card is all I can suggest. If you're in there take some pics and post them up, it might help. I'm replacing displays on both of mine in April. So I can take pictures then

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I'm All Ears.

Thanks everybody for the help.
I have looked on the bottom of the unit and they is a massive plate you can unscrew.
I tested the ram on starting up the unit and got the message Bad ICL1. Showing only 512 Kwords when starting the unit instead of the full amount. I will open the unit over the weekend and see how I get on. Will post some pictures.

Regards

Peter

Hi All,
sorted out the S950. The ram had come unseated. Got all the 1536Kwords back. Pictures show the bottom of the S950 with the plate in place and removed. Ram is at the upper right hand side. Thanks everybody for the help.

Regards


Peter

OK. How do I attach the pictures to the post.

I'm glad you got it sorted out.

You can upload pictures to photobucket and then link here using the img code.

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So ya'all - whatcha still using old akais' for?

Just curious - cant decide if I'm keeping mine for sentimental reasons, I mean 1.5 meg - woohoo - and thats fully stuffed!

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I tend to stick drums or anything that I want to dirty up through my old samplers. It is a huge effects processor! I tend to just sample and then record the samples back into Cubase, cut it up and then import into Battery. It isn't the same sound as a bit crusher/sample rate reduction plug in. I have a dodgy Cheetah sampler which gives the most crunchy aliasing at low sample rates and does something even more destructive if you use the built in reverse option.

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Quote Chaconne:

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So ya'all - whatcha still using old akais' for?

Just curious - cant decide if I'm keeping mine for sentimental reasons, I mean 1.5 meg - woohoo - and thats fully stuffed!

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Cause they're fun as hell.

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I'm All Ears.

1.5MB?? my Roland s-330 has 750k (un-expandable) Ram! (and only a maximum of half that can be used per sample). But then again it does have the D-50's TVF's One of the best filters every do endow a sampler.

750K? luxury. My SP has 384Kbytes ahahahha!!!

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I'm All Ears.

Quote Chaconne:

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So ya'all - whatcha still using old akais' for?

Just curious - cant decide if I'm keeping mine for sentimental reasons, I mean 1.5 meg - woohoo - and thats fully stuffed!

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I'll take it off your hands

Nah I'm stuck on using old Akai's for everything, I'm very comfortable with using these old dinosaurs and quicker with them than their software equivalents oh and fun.

Still use the 3200XL and MPC-2000XL oh and a Ensoniq EPS-16+. I'd love a MPC-60, borrowed my mates for a while which made my lust for wanting one even more... So I want this sampling drum machine right? And don't have a lot of money.. So I then went out and blew close to £1k on a vintage dj mixer from 1976 and that's before I service it hahaha I'm a tit Mind most of the cash came from selling my Urei that I had before this Bozak..

But it sounds really nice lol


Edited by vinyl_junkie (27/03/12 08:47 PM)

yeah, but a Bozak is a Bozak and I'd love to own one.

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I'm All Ears.

Yeah it can toughen up a riff if its a bit 'soft synthy', and err...

I guess one or two elements find there way into some tracks, but I'm not sure its vital. On the other hand its a nice looking machine, and worth nothing really so it stays. I think if I did the mod to replace the drive with a card reader, and it had a good selection of kits ready to go it would feel like it was earning its keep - but floppies - it seams a bit embarrasing now!

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Get the Bozack!

http://www.youtube.com/watch?v=OPTxBeVeyhY

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Very nice. You had the Urei 1620 before didn't you? An original or re-issue? Presumably you prefer the Bozak?

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Quote Chaconne:

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( I found the manual - type written with hand drawn diagrams ! - was it that long ago?)

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Yep.

I wrote that on an Amstrad PCW8256...



And had to hand draw the diagrams!!!

This was after the S900 was released - Akai UK were embarrassed by the four-page (ahem) 'manual' that shipped with the 900 so asked me to do something a bit more comprehensive. They sent it to customers who asked for more details on sampling and operation.

Then Akai Japan got wind of it and (I think) shipped it with subsequent production runs and as the S900 and S950 were essentially identical, it was (I think) used for the S950 as well with an addendum, errrmmm, added to describe the extra features (higher sampling rates and expanded memory).

This was 26 years or so ago!! There are probably people here raving about a 12-bit, 8-voice (at best) sampler that's actually older than they are!

Happy days!

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Website / Music Lab Machines / Blog

Quote Richie Royale:

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does something even more destructive if you use the built in reverse option.

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Blimey. It's trivial to implement the perfect reverse function - just write the sample values out back to front. This is clearly not destructive in any way. Not exactly rocket surgery.

Amazing if the early samplers managed to f*** this up!

Quote chris...:

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Quote Richie Royale:

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does something even more destructive if you use the built in reverse option.

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Blimey. It's trivial to implement the perfect reverse function - just write the sample values out back to front. This is clearly not destructive in any way. Not exactly rocket surgery.

Amazing if the early samplers managed to f*** this up!

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Indeed, this is what one would expect, however the Cheetah really does something weird. It seems to change the pitch as well as add more aliasing noise. I guess the guys at Cheetah were more adept at making joysticks than samplers (and a good synth apparently, the MS6). I also have their MS800! What a bizarre product.

I'll post up a clip if I can (and if it is still working, not been powered on in a while! )

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Quote Richie Royale:

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Very nice. You had the Urei 1620 before didn't you? An original or re-issue? Presumably you prefer the Bozak?

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I prev had the re-issue 1620 which I brought new, not all that compared to the original imo... Really noisy too, I know the original is a bit hissy but this was taking the p*ss. The sound was very hard in the mids too, top end not that nice either.

The Bozak is lovely, all class a discrete circuitry. It's a lot quieter than the Urei and the sound with music (especially music with real instruments and propper production) has a very nice quality to it.
It has quite a big musical bottom end, not sure if that's just the eq out of calibration though.
The mic pre's totally wipe the floor with my studio desk (32ch Mackie VLZ pro thing) they also have nice BeyerDynamic transformers on the inputs which also give a bit of gain.

I got 8 sets of NOS ALPS RK-40's to fit to it as it still has the horrible Allen & Bradley pots fitted like all early Bozak's. I'm having it fully re-capped with ELNA caps and fitting one of these to it which will bring the SNR of the phono inputs to a nice 83 dB
http://www.isonoe.com/custom-equipment.html

Not really the best example but here is a quick clip of it playing a old disco record
http://www.youtube.com/watch?v=0vEJYo12Dh0&list=UU0ysg8Om_zET-YzX9lUZh ZQ&index=1&feature=plcp

Can't wait to have it serviced

The Urei sounds a bit crap for a grand mixer then! I bought the cheap two channel Urei DJ mixer which I think is alright, but has very little gain on the channel gains.

I'm sure the Bozak wil be amazing once the pots and caps are sorted out.

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@ Hollowsun

Thats really interesting. My S950 with 8 mono outs into a mixer and some alesis outboard is all I had at first, so I knew the Akai inside out - and it was a good manual - it seamed written for the 'power user'! I squeezed every drop out of it and it kick started what modest success I have had with music.

Thats the reason really I cant ditch it - it wold seam so undignified, to get what - £150? A plug in? I'll probably keep it until I cant lift it!!!

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As mentioned above here is a short example of how my SX16 messes with the playback if you use the reverse option on the front panel. Even with the Soundcloud encoding, you can here the crunch on the third track compared to the second. Both are the same sample, but the second has been played back from the front panel and then reversed in Cubase.

http://soundcloud.com/richie-royale/sets/sx16-example

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Quote Chaconne:

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@ Hollowsun

Thats really interesting. My S950 with 8 mono outs into a mixer and some alesis outboard is all I had at first, so I knew the Akai inside out - and it was a good manual - it seamed written for the 'power user'! I squeezed every drop out of it and it kick started what modest success I have had with music.

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The S900/950 was a cracking piece of kit in its way (and its day) - pretty much a Fairlight for a 10th of the price. And, of course, its release coincided with the Atari which was a marriage made in heaven back in 1986.

I take your point about selling it (or not, as the case may be). If you like it, get on well with it and it has a use for you, then yes ... keep on doing what you're doing and good luck to you - more power to your elbow.

Glad you liked my (ahem) 'manual'. Yes - it WAS aimed at those who wanted to coax more out of their S900, know more about sampling in general, etc.. The original 4-pager was just a joke but Akai were very young back then (roughly two years old by the time the S900 came out) and finding their feet so some leeway should be afforded them.

It always makes me smile all these years on to see there's still love for all the old Akai sampling gear I had a hand in.

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Quote Chaconne:

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£150?

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Recent eBay sales in the US have seen them go for $500 on average... crazy.

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I'm All Ears.

look - dogged, no SCSI, and standard RAM $599 and 3 offers.

http://www.ebay.co.uk/itm/Akai-S950-s-950-12-bit-rack-Sampler-vintage-DEAL ER-/140727484561?pt=LH_DefaultDomain_0&hash=item20c4030091#ht_1114wt_1184

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I'm All Ears.

Ha - I was just looking at a few ads in the back of SOS. I'll keep a check on ebay then, I mean maybe that sentimentality might melt away!!!

( i see someone hoping for £150 just for the 750K RAM!)

@ Hollowsun 'a fairlight at 1/10th the price - ' thats a good description of how I felt. It seamed a limitless machine to me at the time.

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The S2800 was my first sampler and loved it, great manual too. It pretty much taught me sampling. Probs the most overlooked thing on it was the "help" button but I thought it was cool.
The 8meg Memory expansion though was almost as much as the sampler hahah

Edited by vinyl_junkie (28/03/12 09:03 PM)

Quote Chaconne:

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Yeah it can toughen up a riff if its a bit 'soft synthy', and err...

I guess one or two elements find there way into some tracks, but I'm not sure its vital. On the other hand its a nice looking machine, and worth nothing really so it stays. I think if I did the mod to replace the drive with a card reader, and it had a good selection of kits ready to go it would feel like it was earning its keep - but floppies - it seams a bit embarrasing now!

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Floppy emulating card reader takes this baby into the 21st century. Hahaha.






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I'm All Ears.

OK - thats pretty cool.

I have looked over that site and considered this - its not a bad price - but the site is a bit confusing.

Can you put stuff on the SD card from a computer, or does it save things only from the S950 memory?

Plus, what do you do, fill it up, save the data / programs, then clear the memory for another load etc? If you dont mind answering a couple of queries here publicly it might interest others...?

Thanks

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Quote Chaconne:

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Can you put stuff on the SD card from a computer, or does it save things only from the S950 memory?

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No and yes. The card will act exactly like a floppy. You create a 950 disk image for the card. You save to the card as you would a normal floppy except that you obviously now have a great deal more storage on a single card.

Quote:

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Plus, what do you do, fill it up, save the data / programs, then clear the memory for another load etc? If you dont mind answering a couple of queries here publicly it might interest others...?

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No problem... That's not my machine but I've done this to another sampler of mine. You can sample / load as much as your sample time permits (i think 26 seconds on full 2.25MB, IIRC). I'm not sure if you can create partitions on the card but as you mention, you can offload the card contents to your PC for a more permanent archival storage.

So 2 real advantages:

1. no longer need to store many floppies (which fail).

2. flexible archival tool for projects.

and of course, the ability to share your project with someone else without mailing them the floppies!

On my 3000, I also use a CF solution but via the SCSI. It allows me to edit my audio ona PC, then convert it to the sampler's format, load it onto a CF card and into the unit. I have 32 partitions on a 1GB card which I can pick and choose samples from or load entiore programs. It really saves so much time and allows me to back up my projects easily.

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I'm All Ears.

Quote Chaconne:

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Can you put stuff on the SD card from a computer

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No.

Quote:

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or does it save things only from the S950 memory?

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That.