4 - Electronic Drip PCB Opto 6 (with x2 T4B) 5 - Electronic parts on mouser. All making perfectly sense and happily in agreement with Altec specs. Jan 12, 2022 Garth Brooks, NBC studios Burbank, Vangelis (Chariots of Fire soundtrack), and far too many major hits of the mid 70&39;s to late 80&39;s to count, with hundreds of installs worldwide, standing head-to-head with similar consoles from API, MCI, Harrison and other hybrid designs. Apr 24, 2022 Hi All As I wasn&39;t excited by commercial one&39;s I build my own 19&39; 3 slot 500 Rack. Hi gang, I&39;ve studied and read enough on mic build and and capsules to come full circle - I&39;m confused again lol. I used the Sowter input transformer, and an old Jensen as the output. In fact I had it since I started that thread about adapting the 1960 comp into a new circuit. I read in another thread here that the MPSA18 (rotated 180 degrees) is pretty suitable replacement for the BC184. 1 of 2 Go to page. Oct 12, 2017. This is the official build and support thread for the C12 Clone project. It&39;s not representative of what this kit is capable of. Jan 15, 2019 Messages. This usually means he doesnt fit their standard right wing but narrative. Create an account today and connect with like-minded people By becoming a Premium Member not only will you be helping to support the forum, but you'll also receive some. I have a hankering for spring reverb and nothing else will do. Hi, Maybe far too late, but I tried to design some API500 gear and if you or anybody is interested you could use the edges in the attachment (KICAD project). Mar 13, 2012 I was wondering, since my 2480 is already engaged to another design, if there are any other transformers that could be recommended for an authentic U87 sound (Peluso makes some Neumann copies, but which one). I assume that with a perfect microphone, a perfect distance and a perfect angle of. All should be contained in this first post - which is re-edited regularily. 2x Equinox Systems Q47-D capsule system (matched pair) 424. It's exactly what I need except the price is 100US. Hi guys Here will be posted info for 33609 builders. The cheapest option I have found to jump in to the DIY game currently is the SoundSkulptor 501, but I would rather find a build that can give me 6 slots for future expansion as money allows. Terminate the transformer secondary with a 200 ohm resistor. Help Support GroupDIY Audio Forum 1; 2; 3 Go to page. Ben, The Jensen JT-DB-EEPC and Cinemag CM-DBX are some of the best DI-box transformer to day, but also Lundahl LL-1530, LL-15767778 and Sowter 4243, 8044 are a very good alternative with high quality. Jul 31, 2014 Jul 31, 2014. I investigated in the asymmetrical waveform, my result is that if you speak in the microphone at a perfect 90 degree angle, the waveform (display) is almost symmetrical. Los Angeles, CA. For Sale Tranformers, Capsulse, mic bodys, Psu, Tubes etc. Madison, WI. Today at 1237 AM. They used an Altran C-2878 transformer, I can&39;t seem to find information about that transformer anywhere. Mar 17, 2014. A nice tube but the 6S6B seems better. Jan 24, 2010. Nashville, Tn. com gar918 gar918BC Assembly Guide Last upload 1262016 gar918 support thread at groupdiy. I know there are some new uber opamps that will drive 150 ohms directly. They publish benchmarks for each server, which you can find on the respective product page in the &39;Tech Specs&39; tab. I used the wadding from an old duvet Auratone dimensions are 6. Not inclued in the Mouser Bom are 18pf Styroflex630V. JAY X said When a mic is specified to be 150ohm into 1K or 1200R bridged impedance, as today most or all mics have a balanced output, The output of a microphone is between pins 2 and 3, so if the spec says 150 Ohms that means the impedance driving pins 2 and 3. The Neumann engineers are pretty bright and knowledgeable people who know what they're doing. Each phone output has its own amp and can choose between 4 stereo inputs. The four holes in the corners are 2mm (the 2200A mounting screws are M1. So in this way it is very musical indeed. I have fixed a few digital reverbs in my time especially the inexpensive tc's like the m-one and inexpensive lexicons. View GroupDIY (www. I pulled out the 4580 replaced it with a 5534. I will publish all the documentation here when it is ready. The mic pre is discrete just like the original, but the EQ and the output stages allow IC or discrete op-amps. 2x Equinox Systems Q47-D capsule system (matched pair) 424. Sep 7, 2016. Dec 9, 2023. They are very different in design and performance. This was before the circuitry was redesigned to incorporate the LN circuitry (rev D and on), but after the pre and line amp stages had been changed (REV B). an A-18 may sound more correct than a modern replacement, even with the shift in operation. A few designers and manufacturers over there in GroupDIY forum have recently come up with a new rack standard concept called GroupDIY 51x Alliance, the price and availability of which has been finally announced. Kick back, relax, and shoot the breeze Warning personal attacks prohibited and will be strictly moderated. I can't care for any damage etc if you throw this unit onto your neighbour from 9th floor. Joly completely ignores it, with no explanation. here is the schematic The transformer secondary was open, but somehow applying heat to the Pins solved the issue, probably re-soldered the coil wire to pin inside the potted transformer. The mic pre is discrete just like the original, but the EQ and the output stages allow IC or discrete op-amps. Output transistor Footprint. D-Elam 251E with True Pattern Switching on PSU , this was a very fun build. You put it on the threads to prevent screws from working themselves loose. In conjunction with a High quality capsule and Signal Transformer, one can build a Great Sounding Tube or FET Microphone for a Fraction of the price. Aug 8, 2011 Help Support GroupDIY Audio Forum L. As the GroupDIY thread has become quite complex and because several people reported issues joining the conversation, I've decided to set up a new topic here on GS. From the 1591A manual use 1588A for balanced mic input and 1578A for unbalanced mic input. GroupDIY 51X Alliance is a project to create a modular format for DIY audio modules that uses an 18-pin card edge connector and allows the use of - 24 volt power rails. The bobbins were each wound with 5000 turns of 42AWG enamel wire, 3 normal coils and 3 reverse wound. john12ax7 Well-known member. ok we slogged through about 13,000 posts and came up with about 110 links to transformer tear downs, some were unusable because they linked to the closed down vacuumbrain. Sec 600150 split. Hi, I have been excitedly planning a new diy project. Hi, My name is Lars and i am new here. I needed to rack a DBX 900 module recently. Joined Jun 5, 2014 Messages 48. I calculated the internal volume of the Auratones to be 2. b) am researching reasonable mods for my Rode K2 (Mullard CV2492 and 1961 Valvo tubes on their way already) a) it appears I have one of approx three classic mic styles to choose from for the build 1) U47M49 Neuman 2) U87U67 Neuman, and 3) C12251 AKG. Gus Well-known member. , New York, 1978. Bodytube (aluminium) was very sensitive to fingerprints, so you had to paint or powdercoat it. Feb 20, 2011 105. Specially the Point to Point HZ bridge, half PCbhalf PTP for Optimal. S&246;ren, It was on this gmail address you have sent to me before, have you change adress PM or e-mail me, and i will send you a copy. Unfortunately most of the available schematics are drawn in a. dogfaceaudio said I'm looking for schematics for fully parametric EQ's from high end audio gear. If you can swing a full -12V output, it is current-source. Is is a faithful circuit reproduction of the vintage AKG C12 microphone and is designed to fit in the popular Alctron HT-11A or Apex 460 donor microphone body. Find schematics, layouts, PCBs, and tips for projects like G9 micpre, G1176 compressor, G7 tube microphone, and more. For reference. Cleaner build (hopefully) Easier to tell what parts needed for respective VCA builds. I troubleshooted with a working machine & found out that certain functions on the backup battery PCB don&39;t work by swaping the PCB&39;s around . This is how they all start-. 5k to 4 and 8 ohms so its definately. I hope this isn&39;t going to ruffle anyone&39;s feathers but I was wondering if anyone who has built a TG clone could let me know how it sounds. The low guitar note is 82Hz, and guitar systems are never flat to 3dB. I&39;m not sure if they have -18V supplies. I bought this Tascam 52 DB Reel to Reel which had not been used for several years but when it was last used, it was working. I need some help with my two DIY KM84 mics This is my first build of FET-mics, so I might have missed something. 75 for the expensive stuff. I have an original BA6A which spent all of it&39;s previous life in a radio station transmitter rack. Sep 7, 2016. I have one. The designer never even dreamed that the M15 would be used as a. TI Has the RC4580 as a NJM4560 replacement as well. Jun 16, 2017 a) adjust the ratios to match. I was under the impression that these older, smaller DBX units (117, 118, 119, 128) all used the 202s like the old 160VUs. 5K split. I would like to thank GroupDIY forum for allowing me to share my rendition of the Pultec style EQP program equalizer. letterbeacon Well-known member. BUILD CAPI FC526500 SeriesFET Limiter KitOfficial Support Thread. This is a great resource if you. that smaller bottom I'll further compare the circuits, but thought that these beasts would be sounding identical for gains under 50dB and properly micpre-modified 1272's. But it started squirting air instead of cheese and ran out of pressure, with more than half the cheese still. Ferrite beads on the input of the preamp may help, check the schematic if this has been done. It would be nice if all you needed to do was match the input R. In conjunction with a High quality capsule and Signal Transformer, one can build a Great Sounding Tube or FET Microphone for a Fraction of the price. 2 ohms above 200 kHz. Latest Wouterplop; 54 minutes ago; Black Market. Jul 21, 2009 1 I have a good offer about 800EUR. Building a Vintage-style U87 Mic Is Easier and Cheaper Than You Think (Video) April 30, 2013 1143 35 Comments. Singers, Professional Singers, Amazing Singers, just Love Digital Cue Systems, Aviom comes top on the list. Oct 29, 2013 1. Essentially, the capsule needs to be cleaned more often if the rings are brass. Next Last. It&39;s exactly what I need except the price is 100US. Aug 4, 2023. This is the official build and support thread for the C12 Clone project. If the pharmacy of your choice doesn't sell acetone, go buy nail polish remover -- same stuff. I know you are asking because you don&39;t have one, but, if you can get your hands on one. Run the simulation. PSU cases. The trimmer in this microphone PCB is no longer necessary , make sure you jump the potentiometer pad contact and use for R6 6. Loads of great ideas developed, but nobody has ever moved beyond the discussion and created a "standard" or started on a project for this. com When you buy products through links across our site, we may earn an affiliate commission. kingkorg said A while back soliloqueen asked me if i was willing to measure a prototype of k47 she makes. includes every single part and component, NOS input and output transformer, and the front panel in either silver or black. With the left channel increased by 2. Saturation and distortion is something that had to be avoided and the circuits are designed to do so. 1 of 2 Go to page. Things fixed in REV Grounding Scheme. Please note, this article has technical mistakes and wrong information. At my workplace (SC Educational Radio & Television) we have an old Studer 169 mixer that has been "out of. You might wish to do some tests to see if it is necessary to make this a gain stage. I have heard many people praise the sound of these mixers - especially regarding the mic preamps. As was true from the companies inception in 1962 (as Quad-Eight Sound) to. 1 of 2 Go to page. A good quality shielded 11 transformer between the mic and preamp should stop most RF. If i were to make you a capsule in Norway from scratch it would cost 1000 bucks probably. TIRDI-500 PCB (including 4 knobs and front panels) 50. Bay Area, California. They are very different in design and performance. 2 - Hairballaudio Vu Meter 8037 Lamp. Hi GroupdiY, Lately i was working with Oliver with his consent To make a little PCB kit to Build his version of the U47 with EF800 tube. It can be changed at any time with transformer or other curcuitry. 1 of 2 Go to page. Now I am reasonably happy with the poor man's tube mic pre design I thought I might use it as the basis of a simple, easy to build tube mixer project. Its shared with the Groupdiy account, so anyone can accessedit. You can see that the rev C (1st blackface) had LN circuitry mod added. They publish benchmarks for each server, which you can find on the respective product page in the &39;Tech Specs&39; tab. Apr 16, 2013. In it's basic incarnation it doesn't do massive gain reduction and has unbalanced connections. Specially the Point to Point HZ bridge, half PCbhalf PTP for Optimal. Apr 16, 2013. S&246;ren, It was on this gmail address you have sent to me before, have you change adress PM or e-mail me, and i will send you a copy. The TIRDI-500 full kits are now 160 plus shipping. Hi gang, I&39;ve studied and read enough on mic build and and capsules to come full circle - I&39;m confused again lol. I troubleshooted with a working machine & found out that certain functions on the backup battery PCB don&39;t work by swaping the PCB&39;s around . Resistor labels. On exact values, older types are usually 100-10 versus new types which seem to be -10 or 20. A fabric or craft store might carry it. org, with a lot of good links for this type of projects KEV&x27;S DIY GROUP PAGE ON RECORDING. See the drawing attached. When you use a splitter you are not going to get the direct guitar to tube amp sound for people with picky ears. Its tricky , I have to pretent to be the signal and I find myself twisting through the gain knob traces as If I. (for those that don't know and are curious, T power is 12V across pin 2 and 3 whereas phantom would be usually 48V on pin 2 and. This usually means he doesnt fit their standard right wing but narrative. They might just give you a scrap or two. Feb 8, 2013 Joined. Dec 30, 2010 I have read a lot about capacitors in the audio path on this site and others lately, and I have learned a ton. Contact & Company Search Sales Automation Conversation Intelligence Workflows. What is the GroupDIY 51X ALLIANCE In the DIY community, mainly at the groupDIY, there have always been dreams for some sort of modular format. Jan 15, 2019 Messages. Below is a frequency response graph comparing the wiring it "backwards. May 25, 2021. 33uF to 1. Usually the transformer is actually fine though I will say I do generally prefer the sound of the Cinemag. Help Support GroupDIY Audio Forum 1; 2; 3 Go to page. This is the official build and support thread for the C12 Clone project. Then make a ground pour down the middle, above and below stitched with vias and get all of the spade terminals and caps close together. The control voltage is created by the other half 12AT7 connected as a diode to get the negative voltage inject into the input transformer winding. C11 passes audio to the sidechain, if left 0. Oct 10, 2017 Marcelland. please always include your forum name and location for a quote. Help Support GroupDIY Audio Forum 1 2 3 146 Next Filters Basic microphone troubleshooting techniques gyraf Nov 25, 2022 2 Replies 20 Views 5K May 24, 2023 Khron C Tube Ribbon Mic Schematic commanderberti Saturday at 206 PM Replies 13 Views 510 Yesterday at 715 PM kingkorg K C414 body neowalla Mar 20, 2023 3 4 5 Replies 88 Views 13K. Plot Settings -> Save Plot settings. I opened it up once and traced the circuit. We are proud to deliver a multi-functional PCB Gerber Viewer for free, our new GerberLogix Freeware Try it now www. As always, Rack and FrontRear panel from Frank at frontpanel. I know the B2 Pro is a pretty "well known" mod platform, for lack of a better word, due to it being a multipattern U87 copy with the negative feedback circuit in it. vari-mu said I am mocking up the scheme of my modification Altec 436 mk2, this is an intermediate variation. Gothenburg, Sweden. The Sowter BA6A interstage is 11, is readily. Sep 11, 2021. I worry these two statements may cause undue confusion. 2 - Hairballaudio Vu Meter 8037 Lamp. dogfaceaudio said I&39;m looking for schematics for fully parametric EQ&39;s from high end audio gear. I bought this Tascam 52 DB Reel to Reel which had not been used for several years but when it was last used, it was working. May 22, 2021 For Sale AMI NI73 10468 Mic In TX for Sale (Pair) - UK. Sorry to dig up an old thread, but I am also looking for GroupDIY approval for the username JLuginbill from around March-April 2020. Though lately I've been using my DIY home-made Roger Mayer RM58 for that function at least as often. It is credited to Eds work as a Motown engineer an being in use at Motown. I recently purchased a couple of Carnhill VTB 9046M line input transformers. hentaiswimsuit, mujeres jvenes desnudas
6 - Tubedepot socket tube. . Groupdiy
All should be contained in this first post - which is re-edited regularily. I once made a Test and installed a porous Damping Material inside at the Bottom of a round DIY Doublelayer Headbasket (at the Plate where the Capsuleholder is installed). Nov 3, 2008. Oct 10, 2017 Marcelland. Jun 11, 2010. I finally got around to build it. I guess what I&39;m asking is, does the "API" U87 still sound like a U87. Replacing the 100 ohms with a 10K pot would allow the gain to be varied from 6dB to 40dB. This beast was removed in (supposedly) working order from KBPS radio here in Portland sometime in the last couple of years. The image is a simplified diagram of the MK-319 and I have a question. Well it&39;s perfect, it does the magic 1073 should do, and it does it beautifully. Jul 31, 2014. This usually means he doesnt fit their standard right wing but narrative. But here we go again. Authentic Vintage Circuit Microphone PCB D-U67 Tube , D-U87 , D-U47FET, D-M49, D-M269 D-Ela M251 D-47 DEF47 D-12 and New D7 (M7) Custom Microphone. Latest Wouterplop; 54 minutes ago; Black Market. Jul 31, 2014 Jul 31, 2014. Featuring real-tube amplification, Phantom power, High-pass filter and Phase reverse as well as Line, Mic and Instrument inputs. I randomly came across the BM-700800 cheap chinese SDC mods using the Alice circuit and I really liked the idea as well as the result, getting a microphone worth around 400 for less than 100. May 13, 2022. 42 43 44. The only revision was the switch from 1537 VCA to DBX 2151 VCA in the early eighties. Here is what I came up with This schematic is for the newer, surface-mount version of the Rode NT1-A. 1 of 2 Go to page. So other than replacing said feedback capacitor with a 470-680 pF one, what other mods are there. GroupDIY Audio Forum. This usually means he doesnt fit their standard right wing but narrative. As I read and understand, connectivity is pretty straightforward, as syncing happens through the ADAT in each unit individually, so this seems like the way to go for now. But here we go again. mattenylander Active member. Higher DCR and inductance in an interstage is required to really make a modern recreation of a vintage vari-mu deliver 'sameclose as' performance due to differences in the DC voltage and impedance swings going in and out of compression. Mar 21, 2023. should decrease the overshoot of the waveform and reduce the ringing. I have designed a new (more DIY friendly) PCB for Neumann W492. EQ ONE is one of the first in our flagship Designed by Langley series of pro-audio products. I picked up some original transformers for a RCA BA21 preamp. Gothenburg, Sweden. Horvitz from the forums here was kind enough to donate a PSU PCB for me. I'll post some pictures along the way. Output transistor Footprint. Electronic parts kits 80 ea. ) will begin to trickle in over the next week or so. Collective Cases - PSU cases, ez1073, CLX cases and PCB&39;s. 105) into your source tree. Wolpert ISBN None Bindery GBC Pages 108 Source Angela Instruments 10830 Guilford Road Suite 309 Annapolis Junction. Quality wasn&39;t great. You are using a normal resistors for the VR5 and VR6, so you should use the two holes right next to the ones you are using on your photo. here is the schematic The transformer secondary was open, but somehow applying heat to the Pins solved the issue, probably re-soldered the coil wire to pin inside the potted transformer. Hi, My name is Lars and i am new here. C11 passes audio to the sidechain, if left 0. 270M 0. One solution is a commercial Phone Charger portable battery. Get and idea for how handy they can be with your tube mic builds, external psus. kingkorg said Lower polarization gives higher maximum 1thd spl. The only difference with the Alctron is that mid range behaves more like high shelf in a way, but it could be that original hardware does that same curve, it doesn't mean plugins are right. I&39;m attempting to build a 5 band EQ with controls for frequency, bandwidth, gain and individual band bypass switches. So in this way it is very musical indeed. The UREI 1176 Peak Limiter is a classic audio compressor designed by Bill Putnam, first built in 1967, making use of FETs and using them as a. mulletchuck Well-known member. Next simulation run. Sep 11, 2021. Thanks UPDATE the channels now track perfectly when unlinked. Dec 23, 2023 1. I picked up some original transformers for a RCA BA21 preamp. They used an Altran C-2878 transformer, I can&39;t seem to find information about that transformer anywhere. See GroupDIY Modify g7 mic for 60v polarisation voltage for notes on how to reduce the polarisation voltage to a easier-managable 60V Other than the AKG CK12 capsule, I. If you add even more transistors and make each stage into a current-mirrored push-pull drive to each driver Q, as mikep speculates, it goes up to about 108dB (of course the simulator assumes perfectly matched transistors). 3 cm. Long time no see. This doesn&39;t look anything like a real C414. Yes, you can. It&39;s exactly what I need except the price is 100US. Help Support GroupDIY Audio Forum J. Joined Oct 29, 2006 Messages 95 Location USA - Portland Oregon. Find many great new & used options and get the best deals for NOS Freed Push Pull Output Transformer 8k600 Ohm RCA BA6A Compressor 15Hz-20khz at the best online prices at eBay Free shipping for many products www. The trimmer in this microphone PCB is no longer necessary , make sure you jump the potentiometer pad contact and use for R6 6. Heres a link to a folder with everything needed. Being an "Audio Apprentice", if you will, I&39;m always looking for something cool to build. Seems that the peak LED indicator has its own life. org, with a lot of good links for this type of projects KEV'S DIY GROUP PAGE ON RECORDING. - 1 db 30-30K. Create an account today and connect with like-minded people By becoming a Premium Member not only will you be helping to support the forum, but you'll also receive some. I would like to here if anyone know if it is possible to rewire the 7-pin plug on the SE2000T microphone so it works with the powersupply from the t-bone stc 800 powersupply I have the se2000t but no powersupply and it does not seem to be an option to find the. Hi, Maybe far too late, but I tried to design some API500 gear and if you or anybody is interested you could use the edges in the attachment (KICAD project). The 4 track version has the same number of channels (two) but their position on the tape allows operation in both directions by reversing the tape. Chinese companies or a company like. You need an SMPS that is 3V higher than the final regulated voltage. Disclaimer I&39;m not making money by buildingrepairingmeasuring mics. It is available as a separate item for customers who already have the basic C12 parts kit but wish to build the ELA configuration. Screw on capsule, and done. How to Register at GroupDiy. However, with the power switch connected and the wires running all the way over to the other side of the chassis, the noise floor goes up to -77dBFS. I decided to use their FS900 power supply schematic but made a few changes like adding circuit protection for bonehead wiring errors and a 50 cent cap for improved ripple performance. Price 199. Building DIY 1176 Compressor. I used db25 instead of rj45 as connectors but i think you can use rj45 to transmit analog signals as long as you use cat56 shielded cables. I am now looking for a suitable modern 8 bit micro for DIY projects. Electronic forums for audio design & audio schematics. The only thing to keep in mind, is that the heater current of the 6S6B-V is higher than an AC701. Things fixed in REV Grounding Scheme. Previous to the BA-1, RCA ran feedback loops in power amps, the OP-6 remote amp, and some other higher gain voltage and program amps. Joined Apr 15, 2017 Messages 2,752 Location Norway. Learn how to build your own professional audio equipment with Gyraf Audio&39;s Do-It-Yourself Circuits. . national weather service quad cities