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How to link an optical out to the KH750 sub digitally, optical to aes bnc

tyanlion

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Feb 2, 2024
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I would like to skip an external dac and just link my computer's optical output to the KH750's aes port directly. The kh750 has a aes bnc input connector.
I am however new to aes connections so I am not sure on how to go about doing this. Do I need a wire or some type of converter or some type of dac?
 
Analog input(s)2 x XLR: analog electronically balanced
Digital input(s)BNC (75 Ω): AES3; S/P-DIF
Ah! You are talking about an AES3 input via BNC. This is (generally) equivalent to S/PDIF and all you should need is a TOSlink-to-Coax converter with an RCA(M)-to-BNC(M, 75ohm) adapter. Technically, this will not be 75ohms but it should work fine.
 
Why do you want to connect a subwoofer directly to your computer?
 
Well I was thinking I can just skip buying another expensive dac. And just use the onboard dac that the subwoofer has. Am I correct that the KH750 actually still downsamples/converts the xlr inputs to 48khz no matter what, so that means it always uses on the onboard dac?
 
so something like this? :

Converter

Wire


Btw is this advisable i mean skipping the dac totally and just linking to the kh750 directly from the digital output?
Well, if you trust them. The former converter offers no specs. The adapter cable is clearly used and kinked while there are new alternatives at the bottom of the same page.
 
I am however new to aes connections so I am not sure on how to go about doing this. Do I need a wire or some type of converter or some type of dac?
You need a Toslink to Coax converter, plus an RCA to BNC cable.
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If your motherboard has a SPDIF header, then you can skip the converter.
 
I uses converters like this (they exist in both directions) successfully for years. I paid € 10 per device.
 
In your scenario how are you managing delays?
 
I am new to this, so I pretty much don't know what to do. What problems will there be for delays in this setup?
I don't know all your gear but seems you'll have inherent delay issues between mains/sub but depends on the sub's capability to manage (doubt your digital output has something behind that similarly but without info....)
 
I don't know all your gear but seems you'll have inherent delay issues between mains/sub but depends on the sub's capability to manage (doubt your digital output has something behind that similarly but without info....)
the digital out is actually coming from am Asus computer monitor that has an optical out, so the computer is connected via usb c and audio is digitally outputted to the optical out, similar to a tv having hdmi souce and outputting through its optical out port
 
the digital out is actually coming from am Asus computer monitor that has an optical out, so the computer is connected via usb c and audio is digitally outputted to the optical out, similar to a tv having hdmi souce and outputting through its optical out port
But does the software in the computer provide for bass management for crossover and/or delays? LOL can't imagine using a tv as a source.
 
But does the software in the computer provide for bass management for crossover and/or delays? LOL can't imagine using a tv as a source.
Not sure on this, its just a mac connecting its audio out to the monitor's optical out. Do you have any recommendations for software?
 
Not sure on this, its just a mac connecting its audio out to the monitor's optical out. Do you have any recommendations for software?
I am not familiar with apple stuff at all but imagine they have some sort of app solution for eq/bass management....hopefully someone else can help out.
 
The KH750 does bass management internally.

There's no need for external software.

@tyanlion Since you'd need a converter box anyway, instead of doing Mac->USB->Display->Toslink->Converter->RCA->KH750, consider doing Mac->USB->SMSL PO100->RCA->KH750 instead.
 
KH80s are linked via xlr to the kh750 bass, the kh750 has dsp and I have already used the MA1 mike and software suite with it to calibrate the dsp.
 
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