Besides, not all Pultec models included this control. ���A�s �����PQ�F��T����� �?`�B�xB�aҽ�j'�=��5w}��� )#3+�����Ȼ��2�r� Read this. Free US shipping on orders over $100 - Reduced international rates on orders over $50 Subscribe to our newsletter for insane amounts of Internet cred and bragging rights on new product. The Urei LA-4 leveling amplifier has always lived in the shadows of it's older siblings, the LA-2A and LA-3A. Meet Mr. EQ – a nice DIY equalizer – While use of a graphic equalizer is often recommended for fine-tuning the tone of your instrument, no feasible DIY versions exist. If both outputs are installed, you can switch between them with a solderless jumper on the board. ONE LA 500. @�Cp��$��]�;4�4 ��n�Np H����2���of����w֚����:����:g吏*��3�V�� Classic Inductor Equalizer. The World's Most Musical Filters. Pultec EQ DIY Photos: New 3/27/11 : Donate $10 via PayPal and receive 85 in-depth photos of my recent build of a matched pair of Pultec EQs. Use a 2x15V transformer and 7815/7915 for +/-15V or a 2x18V transformer and 7818/7918 for +/-18V. Among the more known ones was the 2 rack units version of the EQP-1A – the EQP-1A3 and the midrange companion MEQ-5. RB 500 ME. What's the difference between the Modern and Vintage outputs? Plus many people prefer the character of the solid state Pultecs over the earlier units with the differential vacuum tube stage. diy-projects. If you want more vintage color then opting for the discrete opamp/transformer-balanced output is the way to go with your EQP5. of quality vacuum tube circuits. The stock, Modern output design uses two IC (integrated circuit) opamp stages: one to make up level lost in the filter circuit, and the other as an inverting stage to provide a differential (balanced) output. Where the EQP5 differs, sonically, is in the signal path. Does the EQP5 sound like an original Pultec? Front panel real estate on a 500-series module is limited, so there is often much weeping and gnashing of teeth when determining what controls will make it onto the front of the unit. Any place I've used it, it helps. It is offered as a pre-assembled 500-series unit or as a DIY kit for a rack-mount case. The highest quality components and the most thorough and easy-to-follow instructions. A parametric EQ with 3 bands, tuned to the frequencies that are most effective for guitar and bass. Check out the examples of this output in action, even without the filter engaged to see what we mean. /Filter [/FlateDecode /DCTDecode] You have really nice metal for your faceplate and enclosure. Tube Opto Compressor ... turning the knobs to dial in the EQ feels like a knife going through grandma’s finest handmade piece of butter. Beats the plugins for sure. The vintage output gives signals a more visceral, forward feeling that helps them translate clearly in a mix while requiring less level to do so. /Height 646 Designing a Rack Mount Colour Unit Pt. Simply solder the included capacitors, potentiometers, and jacks to complete the circuit, then install in the included enclosure. It’s great for shaping drums, guitars or any other sources where you need great sound and fast setup. Why not put the bandwidth control on the front panel? EQ573 Equaliser. The best DIY guitar amplifier and effects pedal kits. Tips & Tricks. /Length 60887 I love DIY! This is a simple, DIY parametric eq from Altronics. H ����O����S> Classic microphone preamplifier. Keep up on the world of DIY without leaving your inbox. Questions? You could say it was in my DNA and I … The stock frequencies are taken from the EQP-1A3 and are exceptional for general sweetening of individual signals and mixed program material. Our customers range from professional recording studios based in the United States, Europe and Asia to small project studios run by small business owners and music recording enthusiasts. Plug (15VAC Power Adapter): * Modern vs Vintage. Being passive, the total amount of energy affected by the HF+ filter is fixed. The slope of these LF filters are so broad that they affect frequencies above 1kHz (boost) and up past 3kHz (cut), making these filters extremely musical (and broadly applicable) regardless of their labels. Being able to provide all the front panel controls of the EQP5 plus a bandwidth knob would have made the build more complex and considerably more expensive. The optional, Vintage output uses a discrete opamp (any DOA fitting the API 2520 footprint and pinout can be used) and a custom output transformer (wired 1:2) to give the EQP5 a more visceral, dynamic character that gives signals additional authority and helps them translate clearly in the mix while requiring less volume and processing to do so. The full clockwise throw of these knobs is dedicated to either boosting or cutting its relative frequency. The PCB provides test points for measurement of this trimpot, so settings can be logged for channel matching and/or later recall. 95.00. Give us a … The EQP5 was designed from the ground-up to be a satisfying DIY project. Notice how naturally the EQP5 widens the stereo image, brings the drums forward, and helps the vocals find the perfect place to sit in the mix. Based on the legendary GML 8200 equalizer, the Don Classics 250 is a mono, 2-slot 500-series unit boasting all the transparency and surgical precision of its inspiration. The filter used in the EQP5 is derived from the filter design from Pultec’s coveted EQP-series of equalizers. The solid-state Pultec EQPs, the sound of which many engineers claim to be sweeter than that of the earlier tube units, use this same DOA/transformer output scheme. The EQP5 provides a single-turn trimpot on the main PCB (printed circuit board) that allows adjustment for the HF+ bandwidth. Check out the audio samples to hear these filters in action. NE573. BYOC, LLC As such it delivers a purer signal which is more faithful to the signal being processed compared to the more colored signal path of vintage units. Screws, terminal strips and Neutrik XLR connectors are also included. While many DIY kits require you to supply your own enclosure, the Tube Program EQ Kit comes with a chassis set, as well. All of the samples below are processed using only the EQP5. This arrangement, used in the later, solid-state Pultecs, gives your signals a lively, dynamic, more opulent characteristic that is as much felt as it is heard. /CreationDate (D:20101206170502-08'00') Listen or download sound samples of our DIY audio kits. 3 0 obj << EQ circuit is a sidechain feed forward equaliser so has extremely low noise floor even at full boost. The EQP5 is a legit tool regardless of cost. Research Sontec EQ; IJ Research “Not Helios” 69 EQ @���@m||�Ko�_\2� �[�TO@QQ=LF)�����}A!Tb��w��2�z Our photo manual will guide you through every step of the assembly. More info... Products. Check out the FAQ and Audio tabs above for more info and samples. The EQP5 employs the passive filter circuitry made famous by Pultec's legendary EQP series of equalizers. ", -Rob Schnapf Elliott Smith, Guided by Voices, The Vines, Saves the Day, "The EQP5 sounds great, and is sneakily a very flexible tool. /Width 800 The Pultec EQP-1A is a tube program equalizer designed via Eugene Shenk in 1951 year. The solid-state Pultecs, the sound of which many engineers claim to be sweeter than that of the earlier tube units, use the same DOA/transformer output scheme. /Type /XObject Each sample switches between the dry (no EQP5) and processed tracks every two bars (eight counts). A passive shelving EQ is a great addition to any engineer’s arsenal, and the EQP5 is a no-brainer for DIY experts and newcomers alike.". I got my start building gear almost two decades back by scouring the internet (a much smaller internet back then) for schematics of classic gear in hopes of building the stuff I couldn’t afford to buy. Today's post is by Joel Cameron of Rascal Audio, who's collaborating with us on a new EQ kit.. endobj EQ: Don Classics 250 Don Classic’s DIY take on the classic Massenburg EQs. As such it shares the same ability to sweeten the frequency response of all kinds of signals as the classic Pultec. Classic opto leveling with new features and your choice of Modern or Vintage signal path. The front and back plates are powder coated and come fully finished, so you don’t need to cut any metal or drill your own holes. NOS vintage Opamp Labs 105 LF/106 HF Inductor EQ kit for DIY Pultec Quad Eight style EQ. Classic tube opto-compressor. The documentation included with each kit includes optional component values for many additional frequency choices for each band, so the more adventurous DIYer can customize their EQP5’s to their hearts content.