![]() ![]() The option to mount Lundahl or OEP transformers and the ability to install the Lundahl "reversed" to increase gain equivalent to the original UREI 1176.The ability to mount BD 135/136 or BD 139/140 output transistors without crossing leads.Fix ground loop problems of Gyraf's version, grouping the ground points in each circuit block and returning each group separately to a central star point.H/J PCBs.īriefly, Mnats' boards introduce these features: Here you can find a list of features of Mnats' rev. The schematic used is the original UREI rev. The Schematic for the 1176 compressor, Rev #F. Many parts lists and successfully completed projects are available on the web.įigure 4.Mnats (the Bill Putnam of the DIY world) offers an updated.F making it simpler for various aspects and great for DIY. Jakob Erland ( Gyraf Audio) made his own DIY versionīased on UREI rev.It is probably the easiest (and cheaper?) to build and the most thoroughly.To clear things up about revisions, I suggest reading this page. ![]() If you want to make your clone sound close to modern reproductions then go for rev. If you're looking for the classic character you should go for A to D rev. In a less colored sound, although preserving the 1176-style compression. ![]() The output is class A/B and it uses a B11148 output transformer.į and G are the cleanest revisions as they measure the lowest harmonic distortion resulting This revision removes the input transformer in favor of an ICĭifferential amplifier. Gain and a slightly different sonic character. In this unit the class A 1108 preamp is replaced by a "push-pull" amplifierīased on 1109 style class AB preamp with an output transformer that gives more output I'm very grateful to these people for what I've learned and what I could do with their teachings.Īcknowledgments are at the bottom of the page. On this web page I just try to give you the basic information and tips to build your own unit.Įssentially this is a collection of wise advices of some guys on the web (found on forums, newsgropus, web pages) ![]() Then DIY is the best way both to save money The 1176 has been employed in countless recordings over the years and it is still The UREI 1176 Peak Limiter is a classic audio compressorĭesigned by Bill Putnam, first built in 1967, making use of FETsĪnd using them as a variable resistor to control the gain reduction in the circuit. ![]()
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