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Hitachi TRK-8080E Line in/DIN problem...


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#1 netstable

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Posted 16 August 2011 - 04:24 AM

Hi Everybody,

Firstly let me say how excellent this site is, I am new to the boombox world and absolutely love the info and pics here! With that being said, I am hoping you knowledgeable people can give me a little bit of info...

I have recently purchased a TRK-8080E in the hope that I could plug an mp3 player into the DIN socket via a 3.5mm - DIN cable. I have tried that and it does play but it is very quiet. When on radio it has no problem bursting my ear drums but through line in I doubt it would scare a mouse with a nervous disposition. The box also has 2 x mic line in which as far as I can see also don't seem to do a lot, though it could just be the person operating it (most likely cause) that is the problem!

The motor doesn't work for the casette player but I was wondering if I got a 3.5mm - casette adapter whether that would be likely to work or not?

Any thoughts on how to either fix or get my mp3 player playing through the box would be massively appreciated!

Thanks in advance

Ben

#2 kingrat2010

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Posted 16 August 2011 - 04:43 AM

try the mic in with record and play pressed :hmmm:

#3 netstable

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Posted 16 August 2011 - 04:53 AM

I had a go but couldn't get anything through, forgive me if I'm being a bit thick here but if there are 2 x 3.5mm mic inputs would I need to split a stereo jack to 2 x mono to hear anything or should a stereo work in one of the jacks?

Ta

Ben

#4 k2j

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Posted 16 August 2011 - 07:57 AM

According to this youtube vid, there is a 5 plug din on the back of the 8080e connection for input.

You'd have to find the right cable or schematics and make your own for your ipod.

I have the 8080W (love it!) The differences that I can tell by watching the above mentioned youtube vid are that mine has regular RCA line in, and my tuner has FM,SW1,SW2,AM. The 8080E must stand for England? does yours have the BBC marked radio stations with the FM,SW,MW,LW Tuning?

good luck!

#5 netstable

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Posted 16 August 2011 - 08:40 AM

I wish mine had the RCA inputs, it would certainly make life a lot easier! :-) I have a stereo 3.5mm cable to DIN that I got from eBay, do you think if it is wired incorrectly that could be why the volume is so low through the DIN socket?

It certainly does have all the BBC, Luxe, Beromunster etc. markings on there, it's a lovely looking thing, just wish I could use it for something other than radio at the moment :lol:

Thanks for your comments, greatly appreciated!

#6 Reli

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Posted 16 August 2011 - 10:20 AM

I am assuming you're using the Line In or Aux setting, not Phono? (phono is rubbish)

If you got a DIN to 3.5mm cable, then yeah, that's the correct way to do it. I use cables like that and have no problem at all. Try raising the volume of your mp3 player to max. If that doesn't work, try spraying some DeOxit on the DIN input, because it might be dirty. And if that doesn't work, there's probably nothing you can do. Some boomboxes just weren't designed with the correct impedence to receive modern input signals.

#7 chevyman-uy

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Posted 16 August 2011 - 01:54 PM

Im use a 5 pin Din ,whit only 3 pin conected ,is a home made but works ,i used in my TRK 8180 and other whit Din connector .
i found the right mode to coneccted in this diagram .


Posted Image

and a pic of my wire



Posted Image

Posted Image

Posted Image

#8 netstable

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Posted 16 August 2011 - 02:58 PM

Thanks for your replies once again, it currently plays when set to 'line in' whilst using the 5pin DIN but I would estimate at about a 10th of the volume that the unit is capable of, do you think I would hear anything if it was wired incorrectly?

Chevyman: That diagram is just the kind of thing I've been looking for and your pics are very helpful, are you currently using DIN - DIN? Which wiring worked for you? I'm hoping it might be similar to the 8080 though experience tells me things like this aren't always so straight forward! Maybe I'll rip the end off the adapter tomorrow and try and rewire it :-)

I can see this boombox malarky getting pretty addictive!

#9 Crusty

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Posted 22 July 2014 - 10:17 AM

I also have this problem with my 8180EM. I am using a 5pin DIN to 3.5mm and the volume is extremely low. Have anyone found the correct diagram or link to a site very i can buy the correct cable? nestable did you ever solve the problem?



#10 goodman

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Posted 22 July 2014 - 11:21 AM

Hey guys, do you try to connect other device to this line in

- a tape deck, another boombox with line out, cd or dvd player???
If the sound is bad - problem is in boombox...
If the sound level is good with another device,

there is no problem with boombox - problem is in mp3 player.
Usually mp3 player is made to listen sound

only with headphones and output level is low.
MP3 line out level is 300-400 mv maximum...

Standart line out level (CD player, tape deck) is 1 v.

This is 3 times higner than mp3 player...

 

Crusty, you can connect your mp3 player with mic mixing jack in 8180EM.

Sound must be good, but mono...



#11 Beosystem10

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Posted 22 July 2014 - 12:23 PM

My 8080 (now with another member and being used for parts to keep more old Hitachis going) works fine with a DIN cable to the aux input, but the line in position on the selector switch is confusing as that's only so that you can record from an external source, so if you want the monitor to work at the same time, you need to press pause and record with the switch set at line in. ;-)

 

No, the E doesn't stand for England! :lol: Interesting idea though, except that we'd need an S version to work here on the Scottish side of the Border, a W version to work in Wales and an NI version to work in Northern Ireland. Maybe also an Eeh version to work in the People's Republic of Yorkshire. I'll get my coat.. :blush:



#12 jimmyjimmy19702010

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Posted 22 July 2014 - 01:29 PM


The 8080 with RCA line in inputs doesn't require any tape deck involvement to get full sound from an MP3 player.
Scotty's imported euro M90 with din inputs has very low sound from the line in. Only the phono inputs via an attenuator works properly for MP3 inputs.

#13 Crusty

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Posted 23 July 2014 - 03:18 PM

Goodman:  Have tried the mic input but the sound gets distorted on higher volumes.

 

Will try to solder a 3 pin DIN using pinout 2,3,5 just as shown on the pictures above.

 

What do i need to get ipod working on the phono input?  the sound gets wayyyy  to distorted of course.. you mention a attenuator, what's that? link please



#14 goodman

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Posted 24 July 2014 - 01:45 AM

459_700x309.jpg

 

 

Crusty, you need phono attenuator.

Search in ebay.com and you find some offerts.

Goodluck... ;-)

 

 



#15 Beosystem10

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Posted 24 July 2014 - 07:16 AM

459_700x309.jpg

 

 

Crusty, you need phono attenuator.

Search in ebay.com and you find some offerts.

Goodluck... ;-)

But the 8080E has no RCA sockets, only a DIN one, whose sensitivity is lower than that required for line level. ;-)

 

allfrom99p_1350666917631.jpg



#16 goodman

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Posted 24 July 2014 - 08:47 AM

Beosystem 10 we have 2 different cases here:

Crusty have Hitachi TRK 8180em with rca phono input and need phono attenuator.

netstable have Hitachi TRK 8080e with din input and need good cable or preamp for mp3 player.

For one of my boombox I use this preamp:

http://boomboxery.co...s-etc/?p=167376



#17 Beosystem10

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Posted 24 July 2014 - 09:42 AM

Ah! :blush: Apologies, I hadn't realised that there were two boxes being discussed here, probably because of the thread title. ;-)



#18 Crusty

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Posted 30 July 2014 - 06:59 AM

Not sure which way i should be looking when following the pinout but i just soldered the cables so that it looked just like on chevyman's picture. And know it works flawlessly!   All i need now is to get my hands on a service manual.



#19 Beosystem10

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Posted 30 July 2014 - 11:23 AM

HiFi engine has one available for download to members.



#20 Crusty

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Posted 14 August 2014 - 03:25 AM

could only find the manual for the trk-8800 at hifiengine



#21 Beosystem10

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Posted 14 August 2014 - 04:21 AM

OK, I'll try to upload it again. There's also a copy in one of my dropbox public folders. User name "wirelessjohn".



#22 Line Out

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Posted 18 August 2014 - 06:50 PM

What I've encountered using DIN, its a LOT more sensitive than RCA line in. When most RCA line ins need the MP3 player playing on full blast, some of the DIN (PB/REC) can distort if volume is set higher than "1". Crown CSC-850L for example, needs my player to be around 3-6 (volume goes 0-40). The Palladium doesn't need even that.

 

My cord is connected to pins 1 (L) and 4 ® and to the metal housing (signal ground).



#23 goodman

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Posted 29 August 2014 - 05:26 AM

Crusty and netstable, what happens - do you resolve your problems or not ?!?



#24 john3Ddub

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Posted 30 June 2017 - 06:18 AM

I had an Hitachi in 84 that had 5 pin DIN. Only connections were outputs as inputs didn't function, however.... You have mic inputs and i believe if you attenuate the output off the mp3 player with a basic voltage divider in each signal line. 120k ohms x 4 if memory serves me wrongly. 

DIN also had a different impedance too so Line levels were different, plus the leads being different too. #nightmare 



#25 Reli

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Posted 30 June 2017 - 09:35 AM

With many DIN inputs, you need to press Record/Play to make them function as inputs.