Class D Amp Connection Methods

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    alex zhu

    how to connect 2 RELs to a class d stereo amp?

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    Andrew Codd

    Hi Alex, 

    You just connect both the red and yellow wires to the right positive terminal and connect the black to a ground. Then do the same with the red and yellow wires on your other subwoofer, but this time connect it to the left positive terminal and use the black wire for a ground. 

    You'll find detailed instructions in the link below.

    https://rel.net/how-to-connect-a-stereo-pair-of-rels-to-balanced-differential-class-d-monoblocks-amp/

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    Artur

    Will this connection work for T / 5i with Pioneer a-70da? And isn't it dangerous for the amplifier?

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    Andrew Codd

    Hi Artur, 

    The Pioneer a-70da is a class D amplifier so you would use this connection method.

    Connect the red and yellow wires to the positive speaker terminals but do not connect the black wire to the negative speaker terminal. You can merely put some electrical tape on the bare wire to avoid a short, or if you experience a hum from the subwoofer you can connect the black wire to a chassis ground. 

    If you have any other questions don't hesitate to reach out. 

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    Mike khim (Edited )

    Hi,

    I have a XTZ A2-300 (https://www.xtzsound.com/product/edge-series) class D amplifier and have recently purchased T/zero subwoofer.

    I am sure my amp will fall into this problem and the amp doesn’t provide additional RCA output nor chassis ground. What is my option then?

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    G Williams

    I have a Yamaha RX-V685 Amp. I believe it's a class D.

    Once the subwoofer wires are connected to the front speaker connections as shown in the video - presumably I can then plug the normal speakers into the amp left and right via say banana plugs - in the same holes? 

    Thanks

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    Stefan Huber

    hi! 

    i have two class d monoblocks and two rel t7i. how can i connect one rel to one class d amp?

    thx for your help,
    stefan

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    Peter

    I followed the instruction and it worked - the hummning dissapeared. BUT the moment the amp powered off - the sub starts hummning again :( - and doesn't power off itself, eventhough it is in "standby" mode.

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    frederic mayoly

    Bonjour,

    J ai le même problème que Peter, post ci dessus: En fait ampli éteint le câble noir du 

    Rel n est plus connecte a la masse de l ampli,et donc le câble enceinte sur lequel est branche le câble rouge ou jaune du Rel se comporte comme une ligne ouverte!

    Une belle antenne qui capte le 50Hz,

    Seul remède,diminuer l impedance d entrée du Rel par une résistance en parallèle,de l ordre de 10k,ou bien blinder les câble enceintes...

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    Robin Wickens

    Hello
    So I’m running a marantz sr5011 receiver with my Rel amp and Samsung tv. I have just changed my tv to a new Samsung and now have a buzz across all speakers (except the rel).
    I have the black wire disconnected and using the Lfe. I can get rid of the hum.
    I’ve plugged the LFE into the number2 subwoofer connection and the hum is less.
    I’m out of ideas now through.
    Do I need to ground the black wire?
    The hum is driving me mad. Please help

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    William Dorsey

    Not sure why you believe you should float the ground (ie., not connect the black wire) and forego the high level connection of the rel to your receiver. From what I see in looking at the description of the marantz 5011, it doesn’t have a class D amp section, so I don’t believe you should be using this Class D connection method. 

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    Robin Wickens

    Thanks for the reply. I did have the black wire connected but have been getting feedback. I’ve tried everything including disconnecting the wire.
    With black wire connected how can I be getting a ground loop from the amp

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    Igor Godberg

    Hi,

    Sorry, but I have to remind you of my ticket - 50373.

    It is about the hum from the T9X sub (connected by Hi-level to the PS Audio S300 amp).

    The hum appears when amp is switched off.

    I have tried both recommended options (RCA interconnection and chassis ground) but it did not help. I hear the same hum from REL as without them).

    I would really appreciate any hint.

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