I do not seem to be able to find the information. Is it so that one Beocretae module is required for each speaker? I understand that it is a 4 channel board, should it not be able to drive one set (two) speakers? Or have I misunderstood.
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21 comments
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HiFiBerry team Hi,
you can use a module for a pair of 2-way speakers. Just note that if you want to integrate it into one of the speakers, you will need a 4-wire cable to the other speaker.
The CX100 currently runs in a 3-way configuration, therefore at the moment you can use it for only one speaker.Best regards,
Daniel -
John Nielsen So, if buying 2 BeoCreates, how does one set up 2 channel solution? Is there any sync between the two Raspberry Pi's?
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HiFiBerry team Hi,
you would need to use a Raspberry Pi only on one Beocreate board and a TOSLink cable between both boards. Note that this setup hasn't been implemented in our sound profiles at the moment. It would require to modify the DSP program.
I'd recommend to wait until the 2-way profile for the CX100 is available.Best regards,
Daniel -
Mads Winther Nielsen Hi Daniel
Do you know when the 2-way profile will be availeble?
Best regards,
Mads
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HiFiBerry team We expect it in the next weeks.
Best regards,
Daniel -
Stuart Beraha Daniel,
Thanks for your very helpful explanations.
Apologies for another question, but I am very interested in the Beocreate board but want to make sure I understand everything correctly.
First: When you refer to a 2-way profile, is this a profile that configures a CX-100 as a 2-way active (rather than 3-way) speaker, so that one Beocreate amplifier can be used to drive a pair of CX-100s?
Second: If one wanted to use two separate Beocreate amplifiers in 2 CX-100s (running a Toslink cable between the speakers as you explained above), will the necessary modified version of the DSP program eventually be made available? If not, are there any materials you’d recommend to a novice to try to figure out how to implement the DSP modifications?
Thanks again!
Best,
Stuart -
HiFiBerry team Yes, the 2-way profile will configure the CX100 as a 2-way speaker with the same output on both bass drivers. With this setup, you can connect 2 speakers to one Beocreate amplifier.
For the CX100 I would not recommend to use one in each speaker. While I would like to sell you 2 boards instead of one, the Beocreate amplifier is powerful enough to use it for a stereo pair.
We have collected some links about DSP design here:
https://www.hifiberry.com/beocreate/beocreate-doc/beocreate-additional-resources/
Have a look at the example project that is linked there. It is quite complex, but I think it gives you a good overview what parts are useful and how to connect them to implement a specific behaviour.Best regards,
Daniel -
Stuart Beraha Thanks very much! I will review the example project you mentioned.
Just out of curiosity, will the upcoming software for the RL2000 and RL6000 be configured to use one board per speaker, or will the recommendation still be to use one board for a stereo pair of speakers?
Best regards,
Stuart -
Joe Syers With BeoVox CX50, if we use one BeoCreate and connect the second speaker with a 4-core speaker cable, do we get stereo, or dual mono?
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HiFiBerry team With the available profile, you can select between stereo/left/right/mono in the Beocreate software. It is basically just a flag that will be set that defines the routing.
Best regards,
Daniel -
Joe Syers Great, thank you, Daniel.
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Sveinn Davidsson Can anyone recommend a type of connector that would be good for this? Also looking for a good 4-core cable that's not too stiff.
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HiFiBerry team Right now, we're trying to source some 4-pin Mini-XLR connectors. I hope to get a sample here in the next 1-2 weeks. If these work well, we will also offer these.
The "usual" 4-pin speaker connectors would be Speakon, but these are designed more for stage applications, therefore they are very robust, but also extremely bulky.
Alternatively you could look for 4-5 pin DIN 41524 connectors:
https://en.wikipedia.org/wiki/DIN_connector
As Mini-XLR they aren't design for high currents, but the power that a CX50 can accept, they are definitely good enough.Best regards,
Daniel -
g.nigro personally, i've self-built a 4 pin twisted power cable
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Sveinn Davidsson Thanks for all the suggestions!
Speakon connectors look way too massive for my CX50s :)
A 4-Pin Mini XLR would be nice if there are no drawbacks, might fit perfectly in the wall-mount hole on the back.
...is wire gauge something I need to worry about?Although 4-Pin DIN connectors would probably be perfect for this, I hate the look of them.
I think a pair of RCA sockets could also be an option.
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HiFiBerry team If you use only a few meters wire, the gauging isn't too critical. Even something like 0.4-0.5mm2 will work fine.
Best regards,
Daniel -
Sveinn Davidsson What wire size would be ideal for the power connector and for the 4-Pin Mini XLR connector, that connect to the Beocreate?
I tried to use some calculators for this, but there seem to be a lot of variables that can affect the current, so I'm not sure if I'm doing it right. Does it get hot inside a CX50 with a Beocreate+RPi2 after a while?
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Sveinn Davidsson I do have plenty of 0,14 mm² copper wires (26AWG?), and a bunch of 24AWG CAT6 cables.
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HiFiBerry team 0.14mm2 is quite thin. You can calculate the resistance with online-calculators, e.g. here:
https://www.cirris.com/learning-center/calculators/133-wire-resistance-calculator-table
Note that the wire length needs to be multiplied by 2.
As a rule of thumb i would say everything below 0.2 Ohm won't have an audible impact, but you should try to stay below 0.5 Ohm.
Higher resistances won't have a huge impact on volume, but the low-frequency response will change a bit and the amplifier can't control the drivers as good as with a low-resistance cable.
Best regards,
Daniel -
Sveinn Davidsson If I understand this correctly, a 3 meter copper wire at 4 x 0.5mm² (20 AWG) comes down to 0.203Ω?
Why is the wire length multiplied?
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HiFiBerry team Because there each speaker is connected by 2 cables - one from the amp to the speaker and another back from the speaker to the amp.
Best regards,
Daniel
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