Guest Symatic Posted August 23, 2013 Share Posted August 23, 2013 ... could be made soon! I have been talking to some guys in the USA, who provide first rate Technics servicing and upgrades and really know their shiz. I enquired about a -16% mod they apparently did once, as they also offer a 78rpm mod and I was wondering how they did it after Backtrack came up with his ingenious Midi-in mod for the Vestax PDX-2000. they started out saying it was possible but kind of permanent, and not simple at all. But recently we've talked about the idea more and more and there could be a pitch slider / circuit board mod in the works which would mean ultrapitch Technics with a relatively simple mod. So what do you guys think about it? Would you like this mod? how would you implement it? any feedback would be greatly appreciated and would maybe contribute to speeding up development. I'd love to see an ultrapitch technics and can imagine a fairly strong niche market for it as long as it wasnt hideously expensive! 2 Quote Link to comment Share on other sites More sharing options...
Vekked Posted August 23, 2013 Share Posted August 23, 2013 umm, I'd definitely use it so long as it worked properly. However I feel like (completely based on my gut, and not science) that given the torque on 1200s is relatively low that it putting it -50% would give problems for scratching... like I'd think the platter would stop a lot when you're cutting but idk. If it worked how it's supposed to then yea it'd be a dream. Quote Link to comment Share on other sites More sharing options...
waxdestroyer Posted August 23, 2013 Share Posted August 23, 2013 umm, I'd definitely use it so long as it worked properly. However I feel like (completely based on my gut, and not science) that given the torque on 1200s is relatively low that it putting it -50% would give problems for scratching... like I'd think the platter would stop a lot when you're cutting but idk. If it worked how it's supposed to then yea it'd be a dream. on the M5Gs the -16% pitch position works fine...but -50% im also not sure about either..but i would def buy a pitch mod if they were commercially avaiable..cant beat the low wow & flutter on a 12 The reason why i havent switched to Stanton 150s is cause i had 2 Super Oem Decks a month ago and both tonearms started feeling loose after about a week of cutting..i tried turning the top screws down but they were both really firm almost impossible to turn so instead of doing possible damage i decided to return them both to the seller..i guess ill always stay a Technics DJ. Quote Link to comment Share on other sites More sharing options...
Guest Symatic Posted August 23, 2013 Share Posted August 23, 2013 yeah my only concern is torque but i guess id have to try it to find out Quote Link to comment Share on other sites More sharing options...
Backtrack Posted August 23, 2013 Share Posted August 23, 2013 I have tried it out. My technics goes -30%. I have tried -50% and the technics cant really handle it. You loose tourqe! But its stabile. I can make a vid and show it if anyone wants to how it behavesAs a matter of fact Im looking into the ultra pitch thing. It can be done. My biggest concern with this is that you have to drill in the technics and that is a pain. Was looking into making a remote ultrapitch. But if someone else is doing the same thing I might not proceed any further. Quote Link to comment Share on other sites More sharing options...
scottie(the)goonie Posted August 23, 2013 Share Posted August 23, 2013 ^ Yea it can be done. The trick is creating a button that can control the range. Quote Link to comment Share on other sites More sharing options...
Backtrack Posted August 23, 2013 Share Posted August 23, 2013 I have never shared this really. Dont know why... Here goes.When I only had technics at home (2 years ago) and my friend had a vestax I wanted the low pitch so I started to experiment with the technics pitch function. First I made mods to the actual pitch function lowering the resistance from/to the pitch controller chip. With this you can get down to really low pitch like -70% but it flutters like you are doing a hydroplane.Then I found out that you can change the internal oscillator to make it go faster or slower. This is prefect stabile but makes your strobe go crazy cause its contolled by the oscillator.So if you want to make your turntable go fast or slow you can do this cheap and easy mod.This is pasted from a mail I sent to turntabletech cause we exchanged info. I wanted to know how the tourqe mod was done and they got this from me in exchange.------------------ Here is how you do it. Its fairly simple. I have been trying different methods but this is the only one that is stabile in speed. I checked with Serato and it differs +- o.o1% while running. Desolder the original crystal at X201 on the mainboard. Solder in cables to a switch. I made a little drawing of it. See the attached c-switch.jpgI only want my turntable to go slow so I only use the original crystal and another with lower MHz (2positions).But of cause you can use a rotating switch with many positions and use more crystals to even get it to run faster. Pitch range with the crystals I have tried.This is not exact values (at all) cause I don't really remember, try it yourself. 4.9167...MHz +8% to 28%4.1932...MHz (original) -8% to +8%3.5795...MHz -21% to -3%3.2768...MHz -10% to -30% Keep the cables to the switch as short as possible to avoid oscillation issues. Very important!!!Solder the crystals directly to the switch.I attached another picture so you can see where I put the switch. Not the best position cause I had to carve out the rubber casing. But it close enough to X201. To make this work you have to cut the orange cable running from the mainboard to the pitchfader. It disables center click zero point. You maybe have to adjust the zero point after trying this.------------------ This is fairly simple to do but to make a nonstepped ultrapitch demands that you have a variable oscillator. I found this easiest to do with a digital circuit. And thats where I am now. Im trying diffrent variations. I want to include a transmitter so you can have the "ultrapitch" in a separate device (like a remote) without having to drill in the turntable as "technics people" sometimes are non willing to change the apperence of a their classic. 1 Quote Link to comment Share on other sites More sharing options...
scottie(the)goonie Posted August 23, 2013 Share Posted August 23, 2013 We need more guys like you on this forum BT 1 Quote Link to comment Share on other sites More sharing options...
ericuk Posted August 23, 2013 Share Posted August 23, 2013 Fuck thats some technical shizzle 1 Quote Link to comment Share on other sites More sharing options...
Backtrack Posted August 23, 2013 Share Posted August 23, 2013 edit: (back from bingeing,((is bingeing a word?)): When I say that the strobe goes crazy that something a human eye would not see at all. Its still just a pretty red light for us.But the dots on the platter moves in myserious ways Quote Link to comment Share on other sites More sharing options...
Focus Posted August 24, 2013 Share Posted August 24, 2013 You on a role Backtrack, really fresh...How about holding down the 33 and 45 buttons or double click etccc.This would eliminate the drilling. I could never get good stability once the speed was at the low level...To erraticand dots going crazy like you mention...Put me down for 2 if you get it going...Skip the remote crontrol stuff fornow ;-)... This is how far i got back in the early 2000's... Quote Link to comment Share on other sites More sharing options...
Guest Symatic Posted August 24, 2013 Share Posted August 24, 2013 Backtrack youre a genious man! Quote Link to comment Share on other sites More sharing options...
doppelkorn Posted August 24, 2013 Share Posted August 24, 2013 1 Quote Link to comment Share on other sites More sharing options...
Guest rasteri Posted August 27, 2013 Share Posted August 27, 2013 Fascinating! I didn't realise modifying the pitch would be as simple as changing out the crystal. How are you planning to implement a digital pitch? Looking at the service manual, it looks like the pitch is determined by a PWM signal from IC301. Perhaps you could replace IC301 entirely with a little PCB that has a microcontroller on it. It could use the ADC to determine the fader position and use that to calculate what PWM frequency to put out. Quote Link to comment Share on other sites More sharing options...
Backtrack Posted August 27, 2013 Share Posted August 27, 2013 Looking at the service manual, it looks like the pitch is determined by a PWM signal from IC301. Perhaps you could replace IC301 entirely with a little PCB that has a microcontroller on it. It could use the ADC to determine the fader position and use that to calculate what PWM frequency to put out.The thing is that it starts to oscillate if you tamper with the 301 output to much. But like you said using a ADC from the original fader instead of a extra fader is the best option. There are some drawbacks with this also but it can be fixed with some clever coding (I hope). Quote Link to comment Share on other sites More sharing options...
Chris Posted August 27, 2013 Share Posted August 27, 2013 What if the pitches ranges were buttons and the slider always gave u 8? So there'd be 16 in each button. Could u do that? Quote Link to comment Share on other sites More sharing options...
Chris Posted August 27, 2013 Share Posted August 27, 2013 U could drill them in where dicers would go and have a controller one knockoff! Quote Link to comment Share on other sites More sharing options...
Guest Symatic Posted January 7, 2014 Share Posted January 7, 2014 check this one out, from uk company time step Quote Link to comment Share on other sites More sharing options...
Backtrack Posted January 7, 2014 Share Posted January 7, 2014 Nice...Looks like they have put the whole motor control in a separate box.2,995 USD....wow Quote Link to comment Share on other sites More sharing options...
djdiggla Posted January 7, 2014 Share Posted January 7, 2014 That would be sweet if you had some of the audiphile mods done too. Quote Link to comment Share on other sites More sharing options...
Guest Symatic Posted January 7, 2014 Share Posted January 7, 2014 Nice...Looks like they have put the whole motor control in a separate box.2,995 USD....wow damn, i thought that price was for the whole modded deck in the picture... but looking again i think thats just the box...... errrrrrr NO sheeeeit Quote Link to comment Share on other sites More sharing options...
DJ Rock Well Posted January 7, 2014 Share Posted January 7, 2014 $3000 for slowing down a Technics a bit?!?! Suddenly my £80 off eBay PDX looks like very good value. 2 Quote Link to comment Share on other sites More sharing options...
Guest rasteri Posted January 7, 2014 Share Posted January 7, 2014 It's aimed at audiophile twats. $3000 is fuck all to the kind of people who will spend 7 grand on a set of speaker cables. 1 Quote Link to comment Share on other sites More sharing options...
djdiggla Posted January 7, 2014 Share Posted January 7, 2014 Shit, there's audiphile needles for $3k! Quote Link to comment Share on other sites More sharing options...
Tbtf Posted January 7, 2014 Share Posted January 7, 2014 Shit, there's audiphile needles for $3k! Someone needs to buy these and have a cut with em http://www.elusivedisc.com/KOETSU-BLUE-LACE-ONYX-PLATINUM-MC-CARTRIDGE-03mV/productinfo/KOEBLUEONYX/ Quote Link to comment Share on other sites More sharing options...
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