kgallen

If you mean the drive in a deck then the same drive is usually used in the same generation of deck. Look at the last two digits per the examples from @BearBoy. But you can’t swap between generations e.g. you can’t put a drive from a 530 into a 520. The drive has the ATRAC chip on it and these chips evolved over the years as the ATRAC coded was revised. Also some machines of the same generation have a variant of the drive which makes them incompatible. For example the ‘pro’ machine MDS-E10 has an MDM7SC drive in it and you can’t swap that for a consumer MDM7A from e.g. an MDS-JE440. Similarly the MXD-D4 high speed dubber uses an MDM7AX2 which supports the high speed dubbing. Again you can’t drop in a ‘vanilla’ MDM7A drive from a 440. If you give a list of your machines we can be more specific on what options you have.

Too many good questions @sfbp but I can’t answer them now other than agree that a higher voltage sidecar cell can couple easily to a lower voltage gumstick. From what I remember of the schematic there is just a low value resistor between them.

Looking at the schematics you should be fine with an NiMH AA or an alkaline AA in the sidecar. All supplies end up at a couple of fancy power supply chips containing boost regulators. I can't find any proper datasheets for the chips but they look like they are there for handling cells of this type and for charging an NiMH gumstick (but not an NiMH in the sidecar). Probably in service mode those voltages that are a little out of spec need tweaking - the power supply chips look like they have some programmability so you can probably adjust them in service mode (need to recheck the SM!).

Hi, I'm very impressed by the extensive commentary from @sfbp (I didn't know you had all this in you Stephen!) and the measurements and observations by @valentinc!!! I'm not sure if I can add much at this point. I will have to download the schematics and take a look at Stephen's question. I do agree that NiMH has a lower cell voltage than alkaline although without digging in I don't know what is the tolerable range of input voltages for the 910. It's going to have a boost converter in there to provide a higher initial voltage for further regulation and I would hope that would support down to 1.1V or better 1.0V. That the NiMH has a longer plateau voltage around 1.2V should be workable if the boost is as I hope. Here are a couple of datasheets for NiMH and alkaline. They are a little generic but might be interesting: https://data.energizer.com/pdfs/alkaline_appman.pdf https://data.energizer.com/pdfs/nickelmetalhydride_appman.pdf

... and stop there, you've got enough machines already! 😄 (Only kidding, seems I have Saved Searches of a similar ilk too. I'm not sure why, it's not a good thing...)

Are they actually from the search or under a subtle grey partition saying something like ‘similar items you might be interested in’? My 980 search always contained mostly 920,930,940 machines.

@BearBoy Originally I was aiming to add optical out for both the CD and MD sections of an MXD-D4 combo deck. Your request was for the coaxial output and I fancied the challenge! 😀

No, you’re right, seems not. I messed about a bit creating Sony accounts in JP and UK and got nowhere!

You mean we could have bought MDW80T direct from Sony for 2GBP each? https://pur.store.sony.jp/rec-media/products/MDW80T/MDW80T_purchase/

😆 ’spreadsheet’ - and I thought I was a disc nutter 🤣

Yea well I need to be sending you one even if you blutac it to the wall. It was all your fault 😁😆

We’ve got enough stock haven’t we? Please tell me we have - or that you just pressed ‘go’ on Amazon Japan 🤭😆

Glad your 909 is working (I don’t want to talk about mine…). I’ve only got an MDS-JE770 that supports this group thing and whilst it’s in my ‘active’ stack it’s not a machine I generally use (normally I use the MDS-JB940 I got from @M1JWR or the MDS-E12 that’s on my office desk under the laptop). So I’ve never got into using the group function - but I know from your posts that it’s something you use quite a bit! Nothing new going on my side but I do use my MZ-R700 at work most days (it’s still trouping on after all these years) and the machines I mention above.

This is not the best photo example I’ve seen but the machine above the unit with lots of green buttons is an MDS-E12. https://www.standard.co.uk/hp/front/no-tears-says-terry-but-the-emotion-shows-as-listeners-wake-up-to-life-after-wogan-6804454.html When MDS-E12 get listed on eBay in the UK they’ll often say ‘ex-BBC’. In the rack below the two 2U CD players above the green unit.

There are some photos of Terry Wogan in the radio studio where you can see MDS-E12 rack mount units in a rack of kit in the background. Those machines first came out 2001 timeframe. As you say jingles, programme adverts and possibly even the music that played when the fire alarm went off and they all had to vacate the studio 😆 The boxy units like above I think were a drop-in replacement for the continuous loop cart machines. The overall shape and layout of the front panel on those Denon’s looks very much like the cart machines. So it was almost certainly a deliberate decision to keep the layout and operation familiar for DJs. Later on the machines like the MDS-E12 were probably triggered remotely by commands from the studio mixing console or possibly even from the control room. The MDS-E12 has a few remote control options as well as the balanced analogue audio I/O that is favoured in pro-audio setups.