rickcr42
Fully Modded
Rest in peace my good friend.
Posts: 4,514
|
Post by rickcr42 on Jul 5, 2008 20:01:45 GMT
The Quick "N Dirty version is i simply snipped out the two muting transistors and on a small pcb added in a small DPDT relay in their place.I may have modified the "mute circuit driver" as well,will have to check.When i get back later I can get you the actual part numbers and layout details opptionally you can just snip the connections of Q404 and Q403 taking the muting section totally out,not a problem in real world unless you have data dropouts,rare,and there mainly because consumer grade equipment MUST protect against ANY potential "glitches" and why it was once common practice to sell amps with protection circuits but to disconnect them for measuring so the spec sheet looked good then hook them back up again creating an amp that could never live up to the posted data when actually in use with actual loudspeakers-same thing here-a stopgap just in case that in MOST cases is not needed Hop this helps rick
|
|
Deleted
Deleted Member
Posts: 0
|
Post by Deleted on Jul 17, 2008 0:21:15 GMT
referring to the schema above if you look at "AoutR" and "AoutL" of the DAC chip and follow the path to the output connector you will see that the ONLY parts in the signal path from the dac to the jacks are Left Channel C424 ,R16 and R18 Right channel C423,R15 and R17 all the rest is either for the muting circuit or the output RFI filter ! Not a whole lot beteen the "meat" and the "metal" Ok resistors are no problem, opened up the PS1 to check out the ratings of c423 & 4 and? "h10 16" and schematic keys to "10mk x 16B" (could be my crap eyesight), means nothing to me Could you shine a light on what rating/quality caps should go here Thanks, Chris
|
|
rickcr42
Fully Modded
Rest in peace my good friend.
Posts: 4,514
|
Post by rickcr42 on Jul 17, 2008 4:18:55 GMT
I beleive on my own I used 100 ohm 1 watt series resistor from Aout left and right then a 4.7uF fil cap in series with the output which in turn goes directly to the output connector with the connector itself having a 100K ohm 1/2 watt resistor going from one from each output (Lout and Rout) to the common.
The cap chosen is one that works in MY system for a cutoff point of some 5Hz when loaded by the next stage so depending on what you have in your system it may need to be larger or possibly you could get by with smaller though unless you are looking into 250K as an input impoedance no smaller than say 0.47uF and if 10K is the next stage input Z then 10uF would be a better choice.Lower,like a 600 ohm load and you start to go away from "good sound" cap territory and into "expensive or crap sound" territory 'cause now we are at the 47uF-100uF range and that usually means an electrolytic or a HUGE (and i mean HUGE ;D ) film cap from say Solen that you have no shot at getting under the hood without doing some major surgery to the case so if you need to drive a load that low you better buffer the output with a highin-Z/low out-Z follower
I also beleive I tossed in a 100pf stacked film FR cap across those resistors to try and keep RFI from getting in via the interconnects which are minimlist "cool blue and white" two wire twist 24 guage solid copper wires types and that can act as antennae there being no shield to speak of other than the "twist"
|
|
Deleted
Deleted Member
Posts: 0
|
Post by Deleted on Sept 21, 2008 13:22:55 GMT
I finally got around to fully modding my PS1. I have to say these final tweaks are REALLY worth it, the improvement is HUGE. Bigger improvements than the first round of mods brought. Thanks to Rick for convincing me to do it. One change I made was: to the inner tube isolation. I found this, although effective left the unit too "bouncey" for my liking. I tried some alternatives and settled on a "D" section pressure cooker gasket as below. It has no bounce at all and to my ears, I could not tell the difference between it and the tube, the lower profile makes it more discrete too. The player is now much closer to my 506 (in fact very little between them), making it a very worthwhile prospect to obtain a good player for peanuts.
|
|
rickcr42
Fully Modded
Rest in peace my good friend.
Posts: 4,514
|
Post by rickcr42 on Sept 21, 2008 14:01:58 GMT
Always nice to see someone come up with their own "twist" on things.Glad it worked out for you On the inner tube thingy ; 1-you do realize it is to be used like a flat tire right ? That is damn near total deflation so you can get the resonance down into the 5hz or so range 2-yes,it can be a bit disconcerting even in the deflated state to have the platform rocking when inserting or removing CDs having said that,I also have moved away from the inner tube/spiked platform type isolation an to layered cork/rubber "chunkies" Purchased as a bulk sheet and cut at home (well someone's home anyway ) on a table saw saves the goofy overcharging if purchased as an "audio tweak" from the usual suspects these puppies satisfy both the need to get AIR under the PS1 (unless you have an external PSU this baby runs damn hot !) and provides the way needed transport vibration iso.I use a combination mass loading/shelf isolation with the footers below and,now don't laugh too hard folks (even though i DO realize I know I am the charter member of "Team Old Cheap Bastard" ),a soft cloth eyeglass case full of pennies on top (drwcord pulled tight.don't wanna lose those coppers dammit ! ) which seems to my ears to be DA BOMB. You could if you have access to one use a solid brass ingot but watch the weight or you will mash the top down until it hits the disc ! El cheapo CDP,El Cheapo isolplat,El Cheapo "DAC Direct Output Mod",old cheap bastard..........out
|
|
|
Post by ticktockman on Sept 29, 2008 21:03:13 GMT
I have just got my hands on one of these(earliest 002 model) in apparently good condition for £5 from my local charity shop. Only problem is no controllers . SO if I want to control the thing without buying a game controller. Has anyone actually found a remote control for the ps1 that actually works and gives a reasonable level of control.Links gladly accepted
|
|
Deleted
Deleted Member
Posts: 0
|
Post by Deleted on Sept 29, 2008 21:26:18 GMT
I bought mine a while ago off ebay shop... myworld.ebay.co.uk/electronic_entertainment_ukJust had a look and no longer there, maybe worth asking. Apologies for poor photo ('phone camera), but it is a generic form so you should find its like somewhere.
|
|
insomniac
Been here a while!
Team Zopiclone
Posts: 938
|
Post by insomniac on Sept 30, 2008 0:15:16 GMT
I have just got my hands on one of these(earliest 002 model) in apparently good condition for £5 from my local charity shop. Only problem is no controllers . SO if I want to control the thing without buying a game controller. Has anyone actually found a remote control for the ps1 that actually works and gives a reasonable level of control.Links gladly accepted Ticktockman I have an original ps1 game controller sitting here. PM me your details if you want it and I will drop it in the post.
|
|
|
Post by ticktockman on Oct 7, 2008 22:57:31 GMT
Sorry for the delay in replying for that kind offer. However I did manage to get my hands on a remote control for the PS1. So I class myself as a member of the club now . What do I think of it....I think it needs a lot more time. Any suggestions on how much time .
|
|
rickcr42
Fully Modded
Rest in peace my good friend.
Posts: 4,514
|
Post by rickcr42 on Oct 9, 2008 0:49:21 GMT
Never turn it off which considering how much heat this sucker generates (not bad on the AH it using a switcher,just bad case design ) means you need to get some "air" under it,space between the bottom of the case and whatever surface it sits on using whatever you have handy, and it can not be crowded.If it has been dormant for a while ? Leave 'er on for three days then give a listen
|
|
|
Post by prawn on Oct 10, 2008 13:09:22 GMT
I bought a bargain box of 9 of these PS1s about 18 months ago (cost me an Ayrton). 4 were 9002s and were ditched one was a 5002 and saved for spares leaving 4 1002s. One of these 1002s seemed full of ...er...man juice...also dumped somewhat rapidly. This left 4 of which 2 I've given the old Dogbreath treatment. I also built a nice linear power supply out of my box of bits. Okay, with each step of modification there is a noticeable improvement in sound (but I would urge other enthusiasts NOT to bother with making a linear supply - a lot of aggro for not much in return), but at no stage would i consider the resultant SQ particularly brilliant. At the frequency extremes the PS1 shows it's limitations - a slightly rolled of treble with a lack of air and fine detail and in the bass a sort of plodding monotony with a lack of any infra bass. In fact if these PS1s compare with a 6k cdp then I'm the Pope's lovechild! Anyways I had a bit of fun playing around with them, BUT I've had much much better results by buying a very old Philips cdp (£5) and applying the Dogbreath treatment to that - ie by bypassing the output stage completely and inserting a simple cap/resistor network directly in to my headphone amp. That way I've raised the SQ over a PS1 significantly and have a nice transport with a full visual display in return. Somewhere on the web there have been good reports of ancient Marantz players responding well to this treatment. Just my impressions - we all hear things differently.
ati
|
|
|
Post by PinkFloyd on Jul 29, 2016 23:56:59 GMT
An absolute star and a true gent...... I miss him. Most loved him some hated him..... I loved him and respected him, he was a good guy.
|
|
Nigel
Been here a while!
Watching over Gotham City keeping us safe
Posts: 2,064
|
Post by Nigel on Jul 31, 2016 22:40:50 GMT
Thanks for reviving this thread, missed it the first time round.
|
|
|
Post by PinkFloyd on Aug 1, 2016 19:00:25 GMT
No Probs Nigel
|
|
Nigel
Been here a while!
Watching over Gotham City keeping us safe
Posts: 2,064
|
Post by Nigel on Oct 26, 2016 22:14:42 GMT
I think the points Sol makes earlier in the thread are spot on. Do you ever listen to yours now, Mike? I appreciate their limitations but they sound so damn musical.
|
|
|
Post by PinkFloyd on Oct 27, 2016 19:32:23 GMT
I think the points Sol makes earlier in the thread are spot on. Do you ever listen to yours now, Mike? I appreciate their limitations but they sound so damn musical. Hi Nigel, I don't even know where they are! I must look the two of them out and (if nothing else) play games on them..... one is in a green translucent enclosure and the other is in a clear enclosure, I wonder where I put them? Probably out in the workshop up in the rafters somewhere I'll have a look. Do you still use yours as a musical source Nigel?
|
|
|
Post by PinkFloyd on Oct 27, 2016 19:49:33 GMT
|
|
Nigel
Been here a while!
Watching over Gotham City keeping us safe
Posts: 2,064
|
Post by Nigel on Oct 28, 2016 16:02:08 GMT
Yes. I feel it brings something to the table my other CD players don't. I'm not saying it's overall better or anything but it certainly makes some discs a more enjoyable listen. I'd love to hear some of the uber modded examples but I've read people say that in some cases, some of the extra fidelity equates to a loss in some of the magic.
|
|
|
Post by PinkFloyd on Oct 28, 2016 20:07:05 GMT
Yes. I feel it brings something to the table my other CD players don't. I'm not saying it's overall better or anything but it certainly makes some discs a more enjoyable listen. I'd love to hear some of the uber modded examples but I've read people say that in some cases, some of the extra fidelity equates to a loss in some of the magic. Yes, sometimes you can over egg the pudding and totally destroy the magic in the process Nigel..... extra fidelity does not always equate to an enjoyable listen and in most cases I find these so called "lossless" signal straight through "Hi End" designs to sound clinical and boring. Most of the musical excitement and energy is lost and the more they concentrate on "losing" parts from the signal path and farting about with the power supply making it linear / regulated the more they are detracting from what makes a particular product sound so musical in the first place. If you can find the components that are helping to create the musicality that was evident at the live gig or original recording then it's worth tweaking them but a LOT of people take one look at a schematic and decide that they are the first to go! I have always been in the "if it sounds good it is good" camp and have never followed the herd, I have always used my own ears when tweaking something and (to date) they have served me very well indeed. Some people are obsessed with the "measurements", they mean eff all if the design sounds crap / clinical but these same people will continue to tell you that XYZ component is better because it measures better..... just look at the sound plot and the graph! Sometimes it's necessary to introduce some "nice" distortion to recreate music faithfully and this is one thing that an engineer will NEVER understand. What do you think I have been doing all these years? A guitar amp NEEDS distortion to sound the way it does and that distortion has to make its way to your ears (via the recording and your equipment) for it to be "like being there". Most of the "high end" shit on offer these days strangles the original recording to the point of making the music a mere bass / mid / treble pasteurized type of elevator / socially accepted form of processed music. I got an e-mail from Dennis Mackowiak a couple of days ago ( DENNISEMACK@aol.com ) telling me what an improvement the little Pinkie Power supply had made to his X-CAN V3: "Hi Mike, Your package arrived yesterday. I plugged the Pinkie in immediately. What a difference! You did a fantastic job on that. I can't thank you enough. I can hear far more detail than before. I'm not sure what I was expecting but it far exceeded my expectations, particularly when you said that the greatest improvement to the sound will come from the kit. I now can't wait to make those changes but I'm going to enjoy just the Pinkie for a while. I can't believe that I heard things in songs I've listened to for decades that I had not heard before. The crash of symbols often became more of a shimmer. The sound of an acoustic guitar is now the sound of individual strings. The Van Morrison and Nat King Cole songs I've played hundreds of times sounded new and so clear and detailed. Nat's voice is even more beautiful now. I just can't believe that a power supply can make that much difference to the sound. So thank you so much! I will let you know when I replace the caps., etc. but for now I am really enjoying the improvement the Pinkie brings out. Have a great day. Dennis"That's a typical example where giving an amp a bit more available current on tap improves things...... nothing has changed, the same "basic" 12VAC supply to the amp but 2500mA of current on tap as opposed to the stock 500mA so no real changes to the amp, just a bigger pool of raw AC current to drink from. I know what major improvements to the SQ / Musicality will be when Dennis fits the upgrade kit but will await his feedback........ without giving too much away, the upgrades major on musicality and have zero to do with "specs" and "graphs"!
|
|
|
Post by PinkFloyd on Oct 28, 2016 20:12:08 GMT
Actually, the home rig should sound the same as a live gig / studio recording...... if it doesn't, it's not recreating music faithfully.
I couldn't have said it better!
|
|
|
Post by PinkFloyd on Oct 28, 2016 20:21:38 GMT
Nigel Kennedy in Dave's living room......... Not somebody I'd feel comfortable with in my "living room" (I tend to die in the other rooms) but each to their own....... Nigel Kennedy is not my cup of tea, I prefer Pablo De Sarasate (all day long)..... Anyhoo: After the conversation above, Mike has performed miracles in repairing and giving a new life to my Xcans V2. He performed a complete upgrate, after rectifying problems. This is an extract from my "thank you" email to him: "Mike - safely delivered this morning, subtle blue light is glowing seductively. A few months ago my wife and I went to see Nigel Kennedy at Malvern. A wonderful and intimate evening with perhaps the best violinist in the world. We sat close and could pick out every nuance of him and his colleagues. He is now playing in my lounge! Beautiful smooth sound from the headphones, but detailed and each instrument is a discrete entity. Beautiful. Thank you so much for doing this and worth every penny. I have not looked inside but from the pix you sent I can see that you've done a fantastic job. Outside is lovely and clean and no evidence that anyone had been inside, apart from the obvious better quality of the visible components."
|
|