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Vintage Radio (domestic) Domestic vintage radio (wireless) receivers only. |
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7th Jan 2021, 10:36 pm | #1 |
Diode
Join Date: Jan 2021
Location: Rotterdam, Netherlands
Posts: 5
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Audio In Connection on Grundig Concert Boy 1100
Hello!
I have inherited an old Grundig Concert Boy 1100, which works beautifully. I would like to plug through its audio-in a bluetooth receiver, to stream music from my computer. I cannot find the manual for the radio anywhere; can anybody knowledgeable about this model let me know what kind of connector will work on this radio? It seems to be using a DIN 5 connector, but I am not sure if I am right about it. Thanks! |
7th Jan 2021, 11:09 pm | #2 |
Octode
Join Date: Sep 2020
Location: Thetford, Norfolk, UK.
Posts: 1,743
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Re: Audio In Connection on Grundig Concert Boy 1100
Hello and welcome to the forum.
Yes, your radio has a 5 pin din style socket in it which can be used. It allows audio out (for a tape recorder) and audio in by selecting it. Plenty of cheap cables on ebay which should work. Assuming you want the other end as a 3.5mm jack, then they often show up as a midi cable which will still be fine. |
8th Jan 2021, 3:01 am | #3 |
Diode
Join Date: Jan 2021
Location: Rotterdam, Netherlands
Posts: 5
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Re: Audio In Connection on Grundig Concert Boy 1100
Agardiner, thank you for your help and for your welcome!
I have ordered one of those cables now, it should be here soon. Thanks! |
20th Jan 2021, 7:23 pm | #4 |
Diode
Join Date: Jan 2021
Location: Rotterdam, Netherlands
Posts: 5
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Re: Audio In Connection on Grundig Concert Boy 1100
Hello!
Sorry to bother again. I bought a cable, this one in particular (sorry, the page is in dutch) https://www.onlinekabelshop.nl/cavus...-zwart-3-meter but unfortunately it does not seem to work with my Concert Boy 1100. I also have another Concert Boy model with the same connection and it does not work there, either. I only hear a generic hum when I connect the cable to one radio; and a hum with some barely audible sound in the other radio. Do you think the problem is the cable or the radio plug is broken on both radios? Thanks! |
21st Jan 2021, 11:59 am | #5 |
Octode
Join Date: Dec 2019
Location: Owston Ferry, North Lincolnshire, UK.
Posts: 1,704
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Re: Audio In Connection on Grundig Concert Boy 1100
According to the circuit diagram the 5pin DIN socket is wired as; 1 and 4 are tape output for recording from the radio. Connections 3 and 5 are tape input, so that a tape or other external audio source can be heard through the radio when the tape button is selected. The radio is mono so 1 and 4 are internally joined together and likewise 3 and 5 are also internally joined together.
Dave |
21st Jan 2021, 3:46 pm | #6 |
Diode
Join Date: Jan 2021
Location: Rotterdam, Netherlands
Posts: 5
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Re: Audio In Connection on Grundig Concert Boy 1100
Thank you Dave! So I suppose the cable I have should work, but I will do some more tests.
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21st Jan 2021, 6:38 pm | #7 |
Octode
Join Date: Dec 2019
Location: Owston Ferry, North Lincolnshire, UK.
Posts: 1,704
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Re: Audio In Connection on Grundig Concert Boy 1100
The cable that you have might well be connected wrongly for the radio. Being stereo it could be using pins 3 and 5, which won't produce tape playback sound from the radio unless one of the radio band selections is operated. If I am correct then in tape mode the cable is effectively being disconnected from the radio amplifier. If the DIN plug is rewirable, then it's simply a case of swapping over the wires in the DIN plug. If the cable has a moulded on DIN, it will need to be replaced with a solder on type or another cable that has two 3.5mm jack plugs, to give both input and output connections.
Dave |
21st Jan 2021, 7:04 pm | #8 | |
Octode
Join Date: Sep 2020
Location: Thetford, Norfolk, UK.
Posts: 1,743
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Re: Audio In Connection on Grundig Concert Boy 1100
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26th Jan 2021, 1:55 am | #9 |
Diode
Join Date: Jan 2021
Location: Rotterdam, Netherlands
Posts: 5
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Thanks guys, I am trying too! I am bit under-equipped as I am not really an expert on this stuff, I inherited these radios, but I will do my best!
And sorry for the late reply, I really appreciate your help and knowledge, I was just too busy juggling too much work in the past days. |