Your cheap preeamps suggestions

Discussion in 'Soundgear' started by ManMythMaschine, Feb 2, 2025.

  1. Radio

    Radio Audiosexual

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    You have to copy the link and enter it into your internet browser. If you click on it directly, Medifire will block the download!
    Your voice is sometimes too quiet - please move closer and stay close to the microphone!

    To me it sounds like electromagnetic interference, possibly from the power supply or a lack of grounding.
    You can see in the picture of your example 1 that there is a signal throughout the range of 20-20000 kHz!
    Another solution would be buy better hardware and better cables (Example Audient)
     
    Last edited: Feb 5, 2025

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  2. Garamondo Furbish

    Garamondo Furbish Audiosexual

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    FIrepod if you have firewire is a cheap solution to get alot of channels. If you just need phantom power most of your basic usb interfaces are more than adequate. You can use VST's to colour your sound or impulse responses.

    a nice preamp is great, but its not in the top 3 places I'd spend money nowadays, unless of course you have a bad case of GAS, then the heart wants, what the heart wants.
     
  3. Garamondo Furbish

    Garamondo Furbish Audiosexual

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    maybe a compressor to even up the audio level, but its much easier to learn good microphone technique, its simply practice and awareness of the situation.
     
  4. Garamondo Furbish

    Garamondo Furbish Audiosexual

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    the problem was a bad connection in the wiring, if you tighten the connection and it fixed the problem.
     
  5. samsum

    samsum Producer

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    Focusrite Platinum Voicemaster can be picked up pretty cheap now or their Trak Master
    Transistor Mic Pre, Expander, Harmonics, Compressor, Eq/Breath etc
    focusrite-platinum-voicemaster-xl-1525496958.jpg
     
  6. ManMythMaschine

    ManMythMaschine Member

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    My whole point is if i can have a loud and clean signal on the sound source level instead of post processing the signal on the computer
    I mean doing more hardware work instead of mouse clicks...
     
    Last edited: Feb 5, 2025
  7. Radio

    Radio Audiosexual

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    The best, of course, are digital cable connections such as fiber optic cables, i.e. Toslink! Fiber optic is interference-free.

    Sometimes changing the cables and the socket works wonders, even neighbors' phones can cause interference.

    Which hardware do you want to replace?

    The problem is that most anyone who cares about audio has an external DAC connected via USB now. There just isn't enough reason to keep including S/PDIF. better is a PCI SoundCard RME with Optical or SPDIF! https://rme-audio.de/internal-cards.html
     
    Last edited: Feb 5, 2025
  8. Radio

    Radio Audiosexual

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    Optical SPDIF is a godsend for using a tube amp. PC noise is carried over the USB cable and is made audible by the tubes.
    Same thing with a cell phone set right next to it. Optical to DAC to tube amp = no noise.
     
  9. ManMythMaschine

    ManMythMaschine Member

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    For right now currently I'm already fine with my native audio 6
    But for the future I would have much more better options and equipment and access to big studios and doing the works depending on the projects that I would done...
     
  10. Radio

    Radio Audiosexual

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    Sounds like a nice future. Good luck to you.

    As we all know, the devil is in the detail. Sometimes PC cases or USB sockets on the PC are not grounded and then the interference starts. You can of course go to an electronics store to test the USB audio interface thoroughly.



    Nonetheless, there are still several circumstances where electromagnetic interference may have an impact on laptops. For instance, placing a laptop close to electrical substations or high-voltage power lines; using a laptop in an industrial setting where heavy machinery can produce powerful electromagnetic fields; using a laptop in a location with a lot of radio frequency (RF) radiation, like close to cell phone towers or microwave transmission sites; and placing a laptop close to other electronic devices that produce electromagnetic radiation, like an electric razor.

    https://www.ttelectronics.com/blog/electromagnetic-interference/
     
  11. Garamondo Furbish

    Garamondo Furbish Audiosexual

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    no matter what you do, you'll probably want to add things to your tracks, especialy vocal tracks. things like reverb, doubling, compression, eq.

    But you are right you need a good signal to begin with or your just piling shit on top of shit. Thats where learning good microphone technique is important, also learning the characteristics of your chosen microphone. Those are both learned by practice, record, playback, change things, record, playback, rinse and repeat until you know how to use the microphone to get what you want out of it.

    Tracking is an art and a science and both need attention and learning to understand, thats the whole theory of the Tea Boy in the studio...
     
  12. mk_96

    mk_96 Audiosexual

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    It does sound like electronic noise, but i think it's coming from the mic. I have an ECM8000, tested it with my voice at 35-40dB of gain to get around the same level as you, and the noise sounded about the same as it did in your recordings.

    So i tested the ECM8000 against an SM57, gain at the same spot (60dB), same preamp for both (RME), no processing. There's some ambient noise, but the differnece in electronic noise is still very audible. Since the only thing that changed was the mic, i think it's safe to say that the preamp itself is not contributing any noticeable noise.

    The bottom line is, the ECM8000 is noisy, and probably a lot noisier than your preamp.
     

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  13. Garamondo Furbish

    Garamondo Furbish Audiosexual

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    I use an isolation transformer for my gear. it should get rid of most ac line noise, EMF or RF are radiative noise and your devices are receivers picking it up, you need to shield your gear (with metal or metal screen) or eliminate the EMF or RF sources, ie if your room lights are giving off noise, turn them off or replace them.

    groundloops are a real thing, and easily fixed. but it all takes troubleshooting, but its all fixable and has been around since electricity, read up or watch some vids if thats your thing.
     
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  14. ManMythMaschine

    ManMythMaschine Member

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    Does isolation transformer do same as UPS ?
    Because I had a plans for electrical isolation and protection of my home studio...
    If then now it's time to get it I guess because in my place currently power goes out whenever it wants and ups can provide a backup time window so I can go on battery in my case only for a short control + s ...
     
  15. ManMythMaschine

    ManMythMaschine Member

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    Does isolation transformer do same as UPS ?
    Because I had a plans for electrical isolation and protection of my home studio...
    If then now it's time to get it I guess because in my place currently power goes out whenever it wants and ups at least can provide a backup window for at least I can go on battery for in my case only for a short control + s ...
     
  16. Radio

    Radio Audiosexual

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    An isolation transformer and an uninterruptible power supply (UPS) have different functions, although they are both used in electrical engineering.

    1. Isolation transformer: An isolation transformer's main purpose is to provide electrical isolation between the input and the output. It isolates the power supply from the load, which increases safety and reduces interference. Isolation transformers can also be used to transform voltages, but they do not provide uninterrupted power.

    2. UPS (Uninterruptible Power Supply): A UPS, on the other hand, is a system that ensures that connected devices continue to receive power even if there is a power outage or interruption. UPSs usually contain batteries that kick in to maintain power in the event of a power outage. They also provide protection against power surges and other disturbances.

    In summary, an isolation transformer does not do the same thing as a UPS. While the isolation transformer is mainly used for isolation and voltage adjustment, the UPS provides continuous power and protection during power outages.
     
  17. Garamondo Furbish

    Garamondo Furbish Audiosexual

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    A UPS is an uninterruptible power supply, a battery and an inverter to convert DC (battery) to AC.

    An isolation transformer doesn't provide backup power, a bright bulb a century or so ago discovered a transformer can induce a current in another transformer providing they are not physically separated too far from each other. This opened up many discoveries, if the coils wound upon the iron core are the same in number, the output is duplicated (regenerated from the original field) - if there are more windings or less windings the voltage is stepped up or down, thats how 220v is converted to 110v, or 440/480 to 220v.

    An isolation transformer is a transformer that is used to transfer isolated AC electrical power to a device or equipment for safety, protection or to reduce the harmonics and transient voltage surges. It provides isolation between the powered device and power source based on the Galvanic isolation where there is no conductive path between the power source and powered device.

    The isolation transformers are used for safety purpose and it is also used to reduce transient and harmonics. It provides galvanic isolation. It means there is no conductive path present between the source and load. Hence, it protects devices from electric shock and reduces electrical noise in sensitive devices.

    This will explain it further if you want to pursue understanding

    https://www.electricaltechnology.org/2022/12/isolation-transformer.html
     
  18. Garamondo Furbish

    Garamondo Furbish Audiosexual

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    I would just add that they can be used together, the isolation transformer would be plugged into the UPS, otherwise the isolation transformer is not filtering noise from the ups (if you reverse the chain to isolation transformer 1st, then ups, the ISO transformer is just acting like an extension cord - an expensive extension cord.)
     
  19. Garamondo Furbish

    Garamondo Furbish Audiosexual

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    A cheap UPS is a laptop computer, if the power drops, they keep working off battery, but they don't do shit for filtering transients or power strikes, most UPS are spec'd to provide power just long enough to shut things down gracefully if a power failure occurs, because the bigger the battery, the longer the UP time, but the bigger the price. 20 minutes is a good compromise, after 10 minutes you can tell if its a temporary outage or something else, and that gives you 10 minutes to shut everything down. - and light a candle...
     
  20. Radio

    Radio Audiosexual

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    If you have a little more money to spare, you can also get a device like this so that you have electricity available in an emergency.

    EcoFlow DELTA 3 Series Portable Power Station | Regular price €899.00


    High performance, quiet operation | 1 800 W power, 3 600 W peak power without limits

    The EcoFlow DELTA 3 Series powers 99% of all household appliances such as refrigerators, TVs and computers. With X-Boost you can even continuously power high-power consumers over 2 400 W such as ovens (2 150 W), hair dryers (1 800-2 500 W) and kettles (1 200-3 000 W). This solar-powered battery is ideal for use at home, in a camper van and outdoors.

    https://uk.ecoflow.com
     
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