Parafeed tube amp

Author: bjpl

August undefined, 2024

WebI had the resources to build said amps when living in Utah in the mid 2000s at the time when I acquired all the parts. A full set of Tribute iron for a 45 driving an 845 with parafeed driver and output, four double 'C' core per side and custom Heyboer power transformers for two PS per side, one for the driver and one for the output. WebMar 4, 2024 · A matching output transformer (OPT) offers low distortion and high signal headroom, and supports high or low impedance headphones with dual outputs. Two …

ecp audio diy: Designing a Parafeed Headphone Amplifier

WebMar 30, 2024 · So a generic parafeed circuit like this, which is very similar to the Hagerman Tuba for example, or most other simple parafeed designs, can really make your cans come alive. I've attached the circuit I used for reference. One thing to watch out for is high frequency oscillations in tubes like this. Not what you want in headphones. WebJun 27, 2014 · It took about 5-6 weeks to get it. Looks like a good time to thank the Torpedo team for specifying a now easy to get parafeed transformer. Since tinkering is a never … small ironing board

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WebMar 23, 2012 · The ecp audio L-2 is a single tube, parafeed, "spud" amplifier for dynamic headphones. The L-2 uses a single high-mu, high-Gm tube for both amplification and … WebMar 17, 2024 · The first is nearly complete, a MH4/REN904 MOSFET CCS loaded input, 6A5G SET output design using Lundahl iron (mid-build photo attached). I am now working on my second design. Nothing innovative, but at a high level, it is a MOSFET CCS loaded 6J5 input and MOSFET CCS loaded 45 parafeed output headphone amp. I am currently working … http://www.diyforums.org/Torpedo/TORPEDOtubes-E90CC.php sonic sweetheart shake

Parafeed-Amplifier Design - Tube CAD

WebMay 8, 2024 · Another good point to find out, choke quality vs inductance value in the case of parafeed. Easily the best HD800 amp I've heard, I'm loading the tube a bit much with 300ohm HPs, this causes a slight 2-3dB of boost at 20Hz because of the inherent tuned circuit of parafeed. http://jacmusic.com/kits/amp/gm70/GM70-index.html small ironsWebNone of my other tube amps - 2A3 Moondogs, WE91 300B monos / top level kit version from DIY Hifi Supply or my pimped Dynaco ST70 (Welborne Labs upgrade kit) - come even close to what this transformer coupled tungsten filament 801A is capable of. OK, especially the Dynaco and also the WE91 amps deliver more powerful bass with the above-mentioned ... sonic sweetwater tx

"WebA range of transformers for repair and construction of tube/valve amplifiers. Home; View Cart; Checkout Categories+ PRO AUDIO. ... PRE-AMP AND LINE-AMP. INPUT TRANSFORMERS. OUTPUT TRANSFORMERS. ATTENUATORS. PHONO CARTRIDGE TRANSFORMERS. POWER AMPS. ... Plate chokes for use as an anode load for parafeed … " - Parafeed tube amp

Parafeed tube amp

ecp audio diy: Designing a Parafeed Headphone Amplifier

WebSep 21, 2024 · The Magnetics begin with the well-tried and quiet Hammond 373BX Classic Series power transformer, separate Hammond chokes for each side, separate filament … http://tubelab.com/designs/tubelab-sse/

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WebIn order to make it a parafeed circuit, one need only AC (capacitor) couple it to an output transformer. The transformer works to transform the high impedance, high voltage, and …

WebWhat is parafeed? A Single Ended amplifier is easy to build with an anode resistor, but this resistor has also... a resistance, which is always a heavy load for the AC signal. This … http://diy.ecpaudio.com/p/parafeed-tutorial.html

WebOct 17, 2015 · Like the 6J6 tube, the E90CC is a dual-triode tube rated at a maximum of 300V on the plates. For the TORPEDO! parafeed headphone amplifier, the triodes in each tube are paralleled, with the power … WebJun 26, 2024 · Note: Another thought on this amp and with the Bifrost 2 and Focal Clears, this total system pairing allows me to hear what the original recording “sounds” like…so another characteristic of a “dry” amp with other good stuff makes it like a reference tube amp on the cheap!

WebJan 22, 2024 · The TIII is a differential hybrid parafeed headphone amplifier which I don't think I'd characterize as particularly "lush" but it is revealing with great extension at both ends of the spectrum. Of course, this is going to be tube dependant.

Web14 hours ago · Head/Combo/Cabinet: Tube Amp Wattage Range: 40-99 Watts Power Tubes: EL34 / 6CA7 / KT77 Tube Details: Preamp tubes: 3 x 12AX7 Power Amp Tubes: 2 x EL34. … sonic superpowerWebDec 6, 2016 · Wow, Total cost for BOM including tubes comes to $150. Very zen-like! If building an OTL like Crack, only the output caps alone will be worth $100 and it will still sound worse than this amp. Thanks for sharing your design. This amp can be a giant killer if a proper CCS and a more refined HV power supply are installed. small irish mammalsWebSep 27, 2014 · In other words, the parafeed aspect only helps. In the above schematic, we see an Ultra-Empathic power amplifier that uses a parafeed inductor and coupling … small ironstone plateWebDesigning a Parafeed Headphone Amplifier Part 1: How a tube works A tube has 3 electrodes (hence triode, pentodes are for another day) – the anode, also called the plate, the cathode, and the grid, also called the control grid. When there is a positive voltage applied to the anode, current flows from the cathode to the anode (Why? sonic sweeny txWebSep 6, 2024 · Here is the schematic, although it is not comprehensive. Parafeed capacitance was determined experimentally by taking FR sweeps of various capacitances (courtesy of cheap Solen caps), along with subjective listening impressions. Ultimately decided on 6.6uF made up of two 3.3uF in parallel. Bias points: 6J5 B+: 380V 6J5 plate to cathode: 200V sonic tails and knuckles fartingWebAs seen above, a parafeed configuration connects the tube to the primary through a capacitor (which passes signal but not B+ current). This allows us to use un-gapped transformers in single-ended configurations, though we must still provide the tube with a series load so that it has something to bite on. sonic swish water in his mouthWebJan 5, 2009 · EF86 driver and EL84 output Parafeed Tube Amplifier. Uses a 230V primary, 9V secondary Talema 30VA mains toroidal transformer as the audio output transformer (OPT). For more details and a schematic, see the EF86 / EL84 Parafeed ampthread. DIY Tube Projects:: DIY Tube Amp Kits:: DIY Speaker Projects:: DIY Solid State Projects:: sonic swss