User Name Stay logged in? Current best DIY preamp? I just a search and found a few recommended preamps. Just wondering if there is some fanatic that has tried or built many of them that can comment on which is preferred. I want something relatively simple that sounds great. I've built a few preamp's around the CCDA topology with great results Simplest preamp is a pot in a box. Next simplest is a pot followed by a buffer. Find More Posts by DF Originally Posted by DF Originally Posted by Eli Duttman.
Originally Posted by m0b1liz3. Define sounds great. Do you want linearity or do you want an effects machine? Also, modern 2 VRMS digital signal sources are more than capable of driving many most? Therefore, is gain in the line stage needed? One thinks of amplification one usually thinks of voltage gain. And since current is drawn a buffer doesn't amplify current it sources it, no? BB code is On. Smilies are On. Forum Rules.
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Send a private message to m0b1liz3.You bet! But recently I was attracted to the idea of a passive preamp. Just a volume control. Removing the active pre stage allows the signal to go directly to the power amp, which means less distortion and colouration.
See photos Nothing much to write home about, simply an RCA socket with decent cable, and one set of input with one set of output. The most striking improvement from this passive pre is the improved sound stage and transparency.
The sound stage was no longer confined to my two speakers and the back wall, it was much wider and deeper; well exceeding my expectations. The separation also improved noticeably. What used to be a group of musicians, can now easily be defined as an individual player, or rows of players from back to front. It made the whole experience more life like, with the same effect being attained from a well recorded musical.
I could tell that each of the performers were moving on the stage as if they were right there. Compared to the active pre amp it was very transparent There was better coherency which was probably due to less phase shift distortion. This quality made the playback of large scale music so much more enjoyable.
This passive pre is not without short comings. Lower frequency extension is not as good as the active, which is expected. Not having a remote can be a pain for some people.
My passive pre only has one set of inputs. The additional input could be included by adding an input selection knob switch and a larger enclosure.
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Please feel free to share your passive pre experience and any suggestions you may have to improve my project?
Previous Next.Do-It-Yourself DIY Audio Projects - projects for audiophiles, hi-fi enthusiasts, music lovers, electronic hobbyists, woodworkers and those who like to learn, build and listen to music. This site exists to promote the hobby of DIY Audio. There is nothing for sale here. All project documentation presented on this site is free for personal non-commercial use. Questions about a specific projects can be sent to the project author noted at the top of the project page.
Last update: 10 November These are some of our featured DIY audio projects. For more DIY projects, use the navigation menu on the left hand side of the page. Last updated 10 November The schematic is similar to the PoddWatt design and able to use a huge variety of tubes.
The circuit is biased into Class-A, ultra-linear operation and output power will be dependent on the tubes utilized. At full output the amp produces a clean 1. This amplifier did a little better than this having a -3dB bandwidth from about 46Hz to about 30kHz.
Make Your Own Audiophile DIY Passive Preamp
The 6CY7 stereo amp uses a 6CA4 tube rectified power supply with excellent channel separation. Matt reports: This is quickly becoming my favorite amp. I highly recommend that anyone looking for a little iPod or computer amp give this one a try. The builder will need to provide a VDC power supply, an enclosure and miscellaneous hardware like connectors and switches. Mark uses 9V batteries for the power supply and is very pleased with the results.
The single-ended 6EM7 amplifier is housed in a vertical wooden chassis that has been styled after early vacuum tube equipment of the s. Matt reports that the 6EM7 amplifier sounds wonderful! The bass is well articulated without being boomy, mid-tones are clear and even, and the highs are crystal clear. The speaker cabinet plans are from the FEEn driver datasheet.
The horn loudspeaker cabinets are made from 21 mm thick pine plywood and use a single FEEn fullrange driver and no crossover. Australian beeswax is used on the outside of the horn cabinet and heavy cedar oil was applied to the mouth of the horn. Mark reports that the horn speakers can draw an extremely accurate soundstage, sound excellent and have lead to a whole new listening experience with Paris, a 2.
This is a complete amp kit that includes all the necessary parts and enclosure to build a stereo amplifier. The LM amp kit comes with audio-grade capacitors and toroidal transformer. The Gobo amplifier kit is easy to build, looks and sounds great.
The amplifier kit is well suited to first time amp builders. As a thank you for the B amplifier schematics, Stamou has shared his implementation of the B single-ended tube amplifier schematic by J. The power supply filtering sections have been duplicated for each channel for this B triode amplifier and premium parts are used throughout.
The audio output transformers are Lundahl LL You can change the tube type to vary the sound and gain considerably. The preamp uses a 6CA4 tube rectified power supply which is very quiet. The Universal preamp is fun as it allows tube rolling to compare various tubes in your stash. This is a great simple preamplifier unit to bring out the most in your power amps.
The enclosure is a 6. The loudspeakers use a single Fostex FEEn fullrange driver with no crossover circuit.Do-it-yourself kits are becoming more and more common in the audio community, especially among the more ambitious—and more thrifty—among us.
With a bit of time and focus, you can wind up with professional-grade audio equipment worth much more than the literal sum of its parts. There is a very wide range of kits available, covering all your studio essentials from basic designs like re-amp boxes and DIs to complex compressors and summing boxes.
Fortunately, DIYRE has bundled three of their entry-level projects together for a great introduction—and a very useful set of tools. The bundle includes full kits for a passive reamp box, a line level attenuator and a passive summing mixer. All three boxes are built from durable aluminum, and are exceptionally handy to have around the studio. Austin Microphones specializes in DIY ribbon mic kits.
Quality ribbon mics are a boon for many a studio situation and the Austin kits boast powder-coated brass bodies, hand-selected components, and a variety of transformer options, including Lundahl and Cinemag, to choose from. I contacted owner Rick Wilkinson, who gave some insight to this rather unique design:. It also introduced some crosstalk as the signal ran past the bottom element and its strong magnets. Having both output transformers right next to each other in the bottom of the mic has some potential for crosstalk too.
Alternate Option: Any of the kits from Microphone-Parts. Seventh Circle Audio from Oakland, CA provides both kits and fully-assembled preamps and compressors. A rack full of Seventh Circle Audio preamps. Seventh Circle offer seven varieties of preamp, designed to fit in their proprietary 8- or 1-space chassis. Their designs are patterned after classic preamps like the Neve and APIwith some models suitable for beginning builders and others best left for those with more experience.
EQ: Don Classics Based on the legendary GML equalizer, the Don Classics is a mono, 2-slot series unit boasting all the transparency and surgical precision of its inspiration.
The front panel shares that same inspiration as well: Five bands of fully-parametric EQ with familiarly colored knobs set the tone on a nicely-painted and silkscreened front panel. Of all the kits here, this is probably the most complex build, and with the loftiest goal as well. The original GML is revered as a super-clean and flexible EQ, useful in both mixing and mastering applications.
Andreas July 28, at pm 4 years ago.User Name Stay logged in? Current best DIY preamp?Design Your Own Tube Preamp
I just a search and found a few recommended preamps. Just wondering if there is some fanatic that has tried or built many of them that can comment on which is preferred. I want something relatively simple that sounds great. I've built a few preamp's around the CCDA topology with great results Simplest preamp is a pot in a box. Next simplest is a pot followed by a buffer. Find More Posts by DF Originally Posted by DF Originally Posted by Eli Duttman.
Originally Posted by m0b1liz3. Define sounds great. Do you want linearity or do you want an effects machine? Also, modern 2 VRMS digital signal sources are more than capable of driving many most?Kaon media
Therefore, is gain in the line stage needed? One thinks of amplification one usually thinks of voltage gain. And since current is drawn a buffer doesn't amplify current it sources it, no? BB code is On. Smilies are On. Forum Rules. All times are GMT. The time now is PM.Second life ranker light novel raw
Resources saved on this page: MySQL Both my parents were hands-on makers, doers and fixers as long back as I can remember. My first car at 16 needed a new fender. House really needed a new kitchen but too stubborn cheap? Wait, I lied. The kitchen took over a year to get done. Nobody said DIY was quick. Fast forward through a pair of University degrees and half a lifetime and I was reading about some cool new audio gear one day when I thought to myself….
You could say that DIY has become a life long habit.Remington 770 extended magazine
Probably not. Can someone with a solder iron, initiative and patience put together a high performance preamp that delivers high end audiophile quality sound. In a word — YES! The quote below says it all.
Walks all over my Audio Research LS3 active pre. Foremost among these is our LDR. V25 Preamp Controller pictured above which represents our fourth generation preamp controller board released in April I highly recommend clicking the link in the preceding sentence but lets consider what we are really talking about here. Yes, they are that good!
It starts with analog LDRs light dependent resistors combined with our proprietary software driven control and calibration technology. You can find out more about volume control and our technology in the articles listed at the end of this article.
You have to build it.Createremotethread shellcode injection
And before you build it you have to acquire all the parts. V25K is a comprehensive kit with everything you need to build your own audiophile grade preamp except a soldering iron and few tools. Everything really does mean everything.
Anyone who has tackled a DIY audio project soon learns there are 2 distinct aspects of the project. First there are all the bits that go inside the box. For most of us the enclosure is actually the more difficult part of a DIY audio project if for no other reason than enclosures often require more specialized tools. Every day. From now on. Nobody but you knows about all that cool stuff inside.
In reality the enclosure is more than just a box.
As manufactures know all too well, the enclosure is very often the single most costly part of any audio product. Higher if you are looking for custom machined panels, labeling, finishes etc.I returned to DIY electronics in after a 20 year pause by building a few kits to get in shape.
This blog is for me to keep track of my progress. I purchased from Glass-Ware. The PCB holds a pair of cathode followers, each loaded by a triode current source, and a respective power supply. A careful look at the schematic attachedconfirmed by some Spice simulation an LTSpice model is also attached revealed that the "Aikido" in the ACF-2 relies on the exact match of the voltages across the capacitors C18 and C19, including the hum component.
These capacitors are in series for the rectifier e. In the ideal Continue reading Attached Files acf In AprilLinear Audio published in Vol.
Linear Audio included a free PCB for the demo project from the article: a balanced volume controller, or rather a minimalist balanced preamp with two pairs of balanced inputs. I have been looking at balanced interconnects for some time and decided to use the free PCB and build the preamp.
Here is what I built. It was difficult to place a C14 power inlet on the back panel, as the space is quite limited due to the central placement of the six XLR connectors. An easy solution would be to fix the power cord permanently to the preamp, but I found a compact snap-in connector that fits the 3mm back panel of the enclosure. I understand the article is available for download at the Hypex web site, and the PCB gerbers and a Attached Thumbnails. Built from the kit from Bruce Rozenblit.
Very nice one, but is not being used - it has too much gain for any of my systems. I will probably sell it. What to say
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