Schiit Aegir Power Amp Impressions

Discussion in 'Power Amps' started by rlow, Oct 16, 2018.

  1. Rafael

    Rafael Rando

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    That picture is probably at the origin of your confusion. I found a correct picture using splitters. Each splitter should be connected to different amp, same channel. The difference is substantial, let’s please be careful.

    https://i.imgur.com/LoEp4gg.jpg
     
  2. Rafael

    Rafael Rando

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    https://imgur.com/a/LQcl6BT

    And before going to bed, a picture of the biamped rig. One amp is 20 Wpc, the other 100 Wpc. A bit unbalanced but good fun.

    Thank you for your patience guys.
     
  3. rlow

    rlow A happy woofer

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    Except that it says right in the picture this is horizontal biamping, not vertical biamping.

    Um, it looks like you have 2 completely different amps powering each speaker seperately (at least from what I can tell in the picture). Also you are running both the left and right channels into the same speaker. This is about as far from “biamping” as it gets. Also if the amps are not exactly gain matched, one speaker will be louder than the other. You don’t know what you’re doing.

    Traditional biamping was horizontal biamping where one amp powered both tweeters (typically a low powered tube amp with a sweet top end) and another amp powered both woofers (typically solid state with lots of power).

    If you are trying to use two different amps, one lower powered amp like Aegir, and one higher powered, then you would horizontal biamp like the diagram you linked to. However, you need to make Aegir power both tweeters, and your 100w amp power both woofers. Not each amp power separate speakers as you have it now. And, depending on the gain of the 100w amp, if it doesn’t exactly match the gain of the Aegir, then you need to seperately lower the volume of the 100w amp to match the Aegir. If you don’t know how to do this, then you should not attempt this setup because your woofers will be way louder than your tweeters.
     
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    Last edited: Sep 15, 2021
  4. Rafael

    Rafael Rando

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    Dear @rlow,

    Thank you for your comments.

    Yes I am using two very different amps. In between this and one member of the forum that was concerned because his amps didn't have consecutive serial numbers, I will find a balance. For this first rig I was just having fun in the heat of the night with the amps I had at hand.

    Regarding gain and symmetry, I am looking forward to have a deeper conversation.

    This morning I bought a pair of this https://imgur.com/a/3VQ3JjZ. Yes splitters they are!

    I will use the splitters to follow you and demonstrate that I was wrong when I said you cannot biamp with a single pair of RCA preamp outputs. This one I think I can concede right now.

    However, the more I look at your diagram in page 42, the more I think there is something wrong. If you look at it for half a minute, you will realize that using the splitters this way is like putting jumpers in the speaker's terminals. I think it does not work.

    In any case I wanted to thank you again because this conversation is inspiring me to buy another Aegir and biamp again.

    All the best,
    Rafael
     
  5. rlow

    rlow A happy woofer

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    Hi Rafael, the splitters are on the preamp end, not at the speaker end. This is not the same thing as jumpers at the speaker terminals. All you are doing when splitting the preamp out is creating a 2nd set of preamp outputs, just like Saga has. If you have Saga, in fact you don’t need to split the preamp outs, because Schiit has already done this for you by including the 2nd set of preamp outputs.

    All you need to do with Saga, in order to vertical biamp, is to send both of the “L” channels from the preamp to one amplifier that powers your left speaker, and both of the “R” channels to the other amplifier that powers the right speaker. Then you would remove the jumpers from your speakers and hook up one set of speaker cables to the top terminals, and another set to the bottom terminals like normal. This way you have 2 independent left channels feeding the tweeter and the woofer separately, and the same on the right.
     
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  6. purr1n

    purr1n Super Friend

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    You are thinking too hard. Step back and do not think or L or R for each amp. Think of it as channels 1, 2, 3, and 4 for functional / logical purposes.
    upload_2021-9-16_18-31-15.png

    This is how the logical / function blocks fit within the physical plane of existence. As we can see, there are no explosions.
    upload_2021-9-16_18-32-32.png

    It doesn't matter if channel 1 and 3 are L R of Amp #1 either. Each channel is distinct for amplifying one driver. It doesn't matter what you use for what as long as you route inputs and outputs for each channel correctly.
     
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  7. Rafael

    Rafael Rando

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    Just arrived: https://imgur.com/a/ZbFL7Xp, I will report soon. I hope to be useful.
     
  8. nilov

    nilov Rando

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    Hi guys!
    Anybody tried Rag 2 like preamp with Aegir?
    Any impressions?
     

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