Members Duesentrieb Posted March 16, 2011 Members Share Posted March 16, 2011 The PCB of my Black Tiger arrived today - this way I can build some more than before - and with int. voltages. A friend of mine was so nice to give me his midi and mute technology, so that I can switch more sophisticated things - and add midi of course. Three channels - of course. Here are two pics, more when it is running with a clip or two or three . . . Link to comment Share on other sites More sharing options...
Members sleewell Posted March 16, 2011 Members Share Posted March 16, 2011 looks sweet man, must be fun and rewarding to build it yourself. i would love to hear clips when you are done, keep the updates coming!! Link to comment Share on other sites More sharing options...
Members KCTigerChief Posted March 16, 2011 Members Share Posted March 16, 2011 Love the channel names man. You are something else! Good luck and can't wait to hear clips! Link to comment Share on other sites More sharing options...
Members Cougar Hunter Posted March 16, 2011 Members Share Posted March 16, 2011 cool Link to comment Share on other sites More sharing options...
Members Cougar Hunter Posted March 16, 2011 Members Share Posted March 16, 2011 Love the channel names man. You are something else! Good luck and can't wait to hear clips! GT Trio has these channel names Link to comment Share on other sites More sharing options...
Members draelyc Posted March 16, 2011 Members Share Posted March 16, 2011 Looks sweet, Olaf ~ can't wait to hear it. Link to comment Share on other sites More sharing options...
Members Whirlwind Posted March 16, 2011 Members Share Posted March 16, 2011 Looking good. Can't wait to hear it. Link to comment Share on other sites More sharing options...
Members ruppert240 Posted March 16, 2011 Members Share Posted March 16, 2011 that is an awesome pcb layout! Link to comment Share on other sites More sharing options...
Members FastRedPonyCar Posted March 16, 2011 Members Share Posted March 16, 2011 is there any sonic advantage to using the toroidal transformer vs the traditional "brick"? Or is it simply a matter of that's what fits in the enclosure? Link to comment Share on other sites More sharing options...
Members Cougar Hunter Posted March 16, 2011 Members Share Posted March 16, 2011 is there any sonic advantage to using the toroidal transformer vs the traditional "brick"? Or is it simply a matter of that's what fits in the enclosure? I had a CAE 3+SE with a toroidal, and later had it swapped with a traditional PT. they almost sounded identical. The toroid was slightly less noisy though, especially when in close proximity with the guitar. Any "expert" who says toroidal trannies aren't "amplike" is a snake oil salesman. Link to comment Share on other sites More sharing options...
Members Duesentrieb Posted March 16, 2011 Author Members Share Posted March 16, 2011 Thank you guys. The torroidal in a small housing like a 2RU has the big advantage of less hum. The field lines are going up, not into the preamp - a standard standing up PT send the EM lines all thru the preamp. Thats why a torroidal is (IMO - and I'm not alone on this one) perfect here. Link to comment Share on other sites More sharing options...
Members Cougar Hunter Posted March 16, 2011 Members Share Posted March 16, 2011 Thank you guys. The torroidal in a small housing like a 2RU has the big advantage of less hum. The field lines are going up, not into the preamp - a standard standing up PT send the EM lines all thru the preamp. Thats why a torroidal is (IMO - and I'm not alone on this one) perfect here. AMEN. I've just about had enough of the transformer snobbery at other forums. Link to comment Share on other sites More sharing options...
Members leadfootdriver Posted March 16, 2011 Members Share Posted March 16, 2011 Nice! Link to comment Share on other sites More sharing options...
Members Duesentrieb Posted March 16, 2011 Author Members Share Posted March 16, 2011 In a full amp the standard PTs have their advantages, thats mostly a question of their behaviour/properties when under the load of several hard driven power tubes and the filtering. In a preamp thats different though, just straight volts and minor current needed. Link to comment Share on other sites More sharing options...
Members leadfootdriver Posted March 16, 2011 Members Share Posted March 16, 2011 How did you determine the pcb layout? DId oyu work it out yourself with software, or did your manufacturer help with that? I'd be interested to hear your opinions on the tone differences between your turret board prototype, and the finished pcb. Link to comment Share on other sites More sharing options...
Members sleewell Posted March 16, 2011 Members Share Posted March 16, 2011 do you make these just for yourself or to sell? Link to comment Share on other sites More sharing options...
Members Duesentrieb Posted March 16, 2011 Author Members Share Posted March 16, 2011 How did you determine the pcb layout? DId oyu work it out yourself with software, or did your manufacturer help with that?I'd be interested to hear your opinions on the tone differences between your turret board prototype, and the finished pcb. Hi Mick, a good friend of mine (a pro) layouted a 20 Watter from my schem last year - and from this and an afternoon in front of the screen with him I've learned to convert this preamp schem (which I've built before into PTP preamp, but without midi) with a PCB layout. I did that, he checked everything (and corrected few errors).A well layouted PCB (as I did already with my "Little Joe", PTP and PCB) sounds as good and has the advantage that you can add things esp. in smaller things like preamps or smaller amp, because you don't need as much space/room as in a PTP design - but it is a science of its own and needs time to get into it. Fortunately I have a good teacher. Link to comment Share on other sites More sharing options...
Members Duesentrieb Posted March 16, 2011 Author Members Share Posted March 16, 2011 do you make these just for yourself or to sell? I will probably sell some of them, but I need to finish this first to see (and hear) if "theory" fits "reality" well, you know . . . Link to comment Share on other sites More sharing options...
Members leadfootdriver Posted March 16, 2011 Members Share Posted March 16, 2011 MIDI is the way to switch! It makes a preamp super versatile. That's great. Link to comment Share on other sites More sharing options...
Members Duesentrieb Posted March 16, 2011 Author Members Share Posted March 16, 2011 2 hours later . . . soldering those IC sockets is a PITA Link to comment Share on other sites More sharing options...
Members leadfootdriver Posted March 16, 2011 Members Share Posted March 16, 2011 The big red/orange box caps. What kind are they? Polyester, polypropylene? Link to comment Share on other sites More sharing options...
Members Cougar Hunter Posted March 16, 2011 Members Share Posted March 16, 2011 The big red/orange box caps. What kind are they? Polyester, polypropylene? Those are Wima brand, and they usually sound badass. Link to comment Share on other sites More sharing options...
Members Duesentrieb Posted March 16, 2011 Author Members Share Posted March 16, 2011 Yup. Wimas. Some are MKPs, some FKPs (1600V DC). Cheap, very reliable and they sound like a cap should sound. I'm not a "this cap sounds soandso" guy, it is IMO more a question of their actual values. Polypropylene. The two yellow 220nF caps are polyester caps. Link to comment Share on other sites More sharing options...
Members Duesentrieb Posted March 16, 2011 Author Members Share Posted March 16, 2011 In my Little Joe I'm using a mix of Wimas (coupling), brasilian (PP) and also PE caps (yellow bricks): Link to comment Share on other sites More sharing options...
Members leadfootdriver Posted March 16, 2011 Members Share Posted March 16, 2011 Those are Wima brand, and they usually sound badass. Found it. Polyethylene-terephthalate (PET) film, German made! http://www.wima.de/EN/mks4.htm I've seen these in a Diezel pic last night. My Crate used them as coupling caps as .047uf/400V, before I raped it, and put in my own turret board. Link to comment Share on other sites More sharing options...
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