A 50W parallel 845 SET Tube Amplifier, It's Finally Done! - Project 2845 Part 12

Ғылым және технология

After a four and a half year long journey, the 2845 amplifiers are complete! It took a long time to get here, but the effort was well worth the result. Our finest amplifier yet!
www.bandwidthaudio.com/2845

Пікірлер: 20

  • @BoKo140
    @BoKo1402 ай бұрын

    Awesome! Gonna go for lottery ticket now!

  • @paulb4661
    @paulb46612 ай бұрын

    Words fail me Gentlemen- this is simply a spectacular piece of kit and a tremendous achievement! Performance and looks to die for, this is definitely one of the best, if not the most accomplished amp of its kind ever made! Even if it turns out to be out of reach for most of us, it is still worth every penny. Congratulations! It's beautiful.

  • @bandwidthaudio7479

    @bandwidthaudio7479

    2 ай бұрын

    Thank you! Really glad to see that our hard work is appreciated! Anyone lucky enough to have a pair of these will be extremely happy.

  • @klaymoon1
    @klaymoon12 ай бұрын

    Congratulations!! Looks amazing!! Even better than I had imagined. I will be ordering it as soon as my fund is available.

  • @bandwidthaudio7479

    @bandwidthaudio7479

    2 ай бұрын

    Thank you! Hard to get a sense on camera, but they look even better in person. I hope you do get to experience these in the future. We’ve never heard any amplifier that sounds as good as these.

  • @klaymoon1

    @klaymoon1

    2 ай бұрын

    @@bandwidthaudio7479 I trust you! With all your passion into it, I’m sure it is a masterpiece. I will be liquidating a whole lot of gears for it. :)

  • @KB-os6lh
    @KB-os6lh2 ай бұрын

    Stunning! Cheers from Australia.

  • @arierol2518
    @arierol25182 ай бұрын

    Nice amps,just a itteration from the Ankoru2 from Andy Grove's Audionote.They have a other tube setup with 300b to swing the 845.Are they also idele at 500watts?But congratz on the build,1250v is no joke to play with.

  • @bandwidthaudio7479

    @bandwidthaudio7479

    2 ай бұрын

    Thank you!. I would argue that the 2845 are quite different from the Ankoru2. Yes both use a pair of 845, but the internal design approach is quite different. If your interested, see our other videos. I also noticed that the Ankoru2 is very light on specs. We show complete specifications on our site. Our 100dB SNR open loop on an amplifier like this is no joke! Cheers!

  • @myrcflyer9999
    @myrcflyer9999Ай бұрын

    Any plans for an optimize single tube 845 SET? in the future. Something that can put out around 15 to 20+ watts with low or no global feedback and ultra low distortion ie 0.1 or less in the 0.1 to 2 watt output?

  • @bandwidthaudio7479

    @bandwidthaudio7479

    Ай бұрын

    Not at this time. The parallel output stage is part of the magic for this amps exceptional open loop performance. As output power increases, output impedance must fall such that the “quality” of the power remains high. In other words, as power increases, speaker control becomes increasingly important. The parallel output stage gives a significant reduction in output impedance when combined with our output transformer. It also reduces noise since the 845 filaments noise can be wired to cancel eachother. We discuss this in detail on the website. Thanks!

  • @kenhiett5266
    @kenhiett52662 ай бұрын

    I'm new to tube amps. Will someone please explain how the noise coming from the 845s when he bumped it up to 50 watts isn't a problem? Is it because the volume coming from those tubes will always be drowned out relative to your speaker output, even with the quick dynamic swings in classical music?

  • @dmark2639
    @dmark26392 ай бұрын

    Amazing! I will check out your website. Are you winding your own transformers or sourcing them from somewhere?

  • @5thlevelweb887
    @5thlevelweb8872 ай бұрын

    How does this do with Martin Logan electrostats?

  • @bandwidthaudio7479

    @bandwidthaudio7479

    Ай бұрын

    These amplifiers will likely work very nicely. I know some electrostatic speakers have low impedance at high frequency due to the capacitance of the panel. How low the impedance gets should be verified. The parallel output stage will help a lot when the speaker impedance falls compared to other SET amps. The parallel output stage would be a requirement in my mind for a speaker if this type if an open loop amplifier is desired.

  • @5thlevelweb887

    @5thlevelweb887

    Ай бұрын

    @@bandwidthaudio7479 thanks for the info. I believe these drop down to 1.7r at 20k.

  • @michaelcorlet2998
    @michaelcorlet29982 ай бұрын

    50watts.more like 30 at 10% distortion.

  • @bandwidthaudio7479

    @bandwidthaudio7479

    2 ай бұрын

    Actually this amp does a full 50W at 2.75% open loop. We measure the performance real time if you made it through the video.

  • @reserva120
    @reserva120Ай бұрын

    Are these the same Desgin “ look “ of the cavers ??

  • @bandwidthaudio7479

    @bandwidthaudio7479

    Ай бұрын

    These are our own design for both the circuit and chassis design. The chassis look loosely based on our 288 and 22A3 amplifiers, but all the component placement and design was optimized to keep the power supply away from the signal paths. see www.bandwidthaudio.com

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