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Old 16th June 2006, 11:41 AM   #11
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Quote:
Originally posted by niteowl
To get audio out you need to add a couple of jumpers to the 45Z . Go to CN505 near the 13 pin connector (CN504) and add the 3 jumper chips ( J303L, J304, J303R) that will correct your problem.

Martin
I this is sort of the info i am looking for. I will double check my boards but the jumpers are all there. but there are 2 resistors missing instead!
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Old 20th July 2007, 05:52 AM   #12
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I'm bringing up another thread from the dead Because I love nak radios, and I discovered what a rich resource DIYaudio is for these radios.

I took the clarion pinouts and started checking voltages on my MB-100. +12V is Pin 2, so they are incompatible.

Mcintosh does read voltage at pins 10 and 12 though, so I suspect a clarion changer would be a direct bolt on. I guess that makes perfect sense.
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Old 27th December 2007, 02:20 AM   #13
amadorj is offline amadorj  United States
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Default NAK HU & Sony CD Changer

I'm about to purchase a TD-45z and was wondering how far you got with the pin out boxes for the Sony CD Changers. Thanks in advance!
-JJA
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Old 27th June 2008, 03:39 AM   #14
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Default Compatible Changers For Nakamichi Head Units

Hello Zero Cool,

I'm a "newbie" to this forum, but having more than 20 years hands on experience with Nakamichi Mobile products as a Car Audio Installer, I would be happy to further your quest for compatible cd changers. I can tell you that virtually all older (early to mid 90's) "Sony based" cd changers with 13 pin din plug will work with all Nakamichi head units equipped with CD changer controls. The list of compatible changers include Eclipse, Denon, Kenwood and of course, as you have already discovered, Sony 10 disk changers. Nakamichi has always designed their decks and changers for delivery of the analogue audio signal via external RCA interconnect as apposed to running it internally with the changer control wiring as most other manufactures do. There are several good reasons for this design, the first, minimal transfer of noise from control circuitry to audio, the second, gives the user the option of using higher grade interconnect cable for improved performance, third, most Nakamichi cd changers have a digital output in addition to left and right analogue outputs -this gives the user another option of using a higher quality external D/A converter like the Nak DAC-101, again for improved sound quality over the changer's built in converter. With a newer model Nak head unit like the CD-500, a digital input is provided, which mates perfectly with the digital output of a MF-51, thereby taking advantage of the better quality 24 bit D/A in the head unit. And finally, the last advantage of running an external audio signal that I can think of in this moment, is the possibility of using the "CD Input" RCA jacks on a Nak head unit as an axillary input for an external device like an iPod, if a cd changer is not being used in the system.

The only downside to all of these advantages, is not being able to just plug in a 13 pin din from an older changer and have it work without a modification. All that is really necessary to get these older changers up and running with any Nakamichi head unit that supports cd changer control, is to make a small incision in the cd changer cable, locate the left and right analogue signal wires, snip them and terminate with a pair of female RCA jacks. insulation of the left over wire ends, a tasteful bandage to the cable incision with electrical tape, and Viola! Simply connect any standard pair of RCA interconnect between your newly installed female RCA Jacks and the "CD Input" jacks of your Nakamichi head unit, and you are up and running! I have successfully completed this mod for dozens of customers over the years, so I can assure you that it works! For the very brave few who are willing to disassemble the 13 pin din plug and put it back together again, RCA pigtails can be soldered directly to pins 5 (right channel out), 9 (left channel out) and 7 (signal ground).

One must take care however, not to attempt this with newer Kenwood changers as the power and ground wires within the 13 pin plug are indeed reversed!! Danger Will Robinson, Danger!! This is a sure way of smoking your head unit!!

What lead me to your thread Zero Cool, was my own personal quest, and that of a customer, to interface an iPod directly with the 13 pin cd changer cable on Nakamichi head units, so that the head unit can control an iPod's various functions directly. I was thinking I might be able to adapt the Kenwood KCA-ip500 device, but since the power and ground connections are reversed, some research and modification will definitely be required! Interestingly enough, my research so far has enlightened me to the fact that not only are the power and ground wires reversed with the interface (and all of the newer Kenwood cd changers), all 13 of the pins are reversed, as in a mirror image, and when one looks at the function of each of the wires that are connected to all 13 pins, they match ie, left and right out, signal ground, data in, data out, reset, Acc etc. -whether the data protocols remain the same is unknown to me at this point in time, so I cannot speculate on the odds of compatibility between newer Kenwood changers and Nakamichi head units -even with mods to the pin configuration. Additional reasearch and experimentation will definitely be required! Hope this information will be of value to all of my fellow Nakamichi admirers!

Cheers!
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Old 12th September 2008, 01:54 AM   #15
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Hello Getthe Nak,

I have a Nakamichi MB-100 and I am very interested in your iPod connection that allows control from head unit. How goes your search? Have you cracked it?
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Old 13th September 2008, 12:43 AM   #16
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Hi all, I'm new here. I have a question: I have a Nakamichi TD 45z that works beautiful after 7 years, I had it on a 325e E30 BMW, and now I want to connect it to a 325is 89 with the premium sound system. I have it working on the car, but only on radio, I don't get any sound out of the aux or tape, I had an iPod connected to the aux on the 325e and tapes sounded great. What am I doing wrong? Someone told me that I have connected the wrong way and the amp is cutting off on aux and tape...... And that I should connect the remote on the HU to the remote un the car, but I can't find anything on that.
Any help will be greatly appreciated, I don't really want to part with one of the best head units I've ever had and if I get it working well keep it till it burns or i die.......
Thanks.
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Old 14th June 2009, 01:13 AM   #17
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well I am back on this project a bit and google searching i came across my old thread ont he subject so i thought i would drop back in!

I did try and make a reverse cable that connected a Kenwood unit to the Nak by reversing the pins. no go. the protocol is not the same, presumably why the reverse pin out.

What i haven't been able to find is WHAT protocol the nak decks use. it is not M-Bus, or C-Bus, or any other standard bus i have found info for yet.

I might get farther looking for Sony or Denon Bus info so i will be digging into that further. Right now i have been side tracked by another annoying problem with these decks and that is the center frequency of the bass control. its centered on 100hz which is just too high for a bass control so i figured out how to modify the LF eq and i am about to get that done.

ALSO...of note. the whole reason i wanted to dig into this cd changer mess in the first place was 1- my CD changer does not like to read CD-R disc's. it reads store bought discs just fine. on another thread here someone suggested i try the older 650mb 74 minute discs as the track pitch they say is different then the 700mb 80 minute discs...well! i'll be darned. the older 650mb discs play just fine! but that was the reason i started digging into the changer protocols. that and 2- cause i do want iPod or phatbox control. but....

for now. I am hoping to figure out what the newest cd changer of any brand is that will work with the nak decks. maybe one will play MP3's or at least read any cd-r you throw at it.


back to the bench


Zc
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Old 14th June 2009, 06:10 AM   #18
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Maybe simulate the protocol via micro then use that to send digital commands to an existing ipod controller? should be equal to the OEM interfaces that mimic a cd changer using an ipod...
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Old 14th June 2009, 01:40 PM   #19
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yeah thats what i was going to do. use a PIC controller to read incoming commands and translate and send out ipod commands. But first i need the incoming protocol info. and bit banging is not fun!
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Old 15th June 2009, 11:31 AM   #20
Puggie is offline Puggie  United Kingdom
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Default Re: Compatible Changers For Nakamichi Head Units

Quote:
Originally posted by GetThe Nak
Hello Zero Cool,

I'm a "newbie" to this forum, but having more than 20 years hands on experience with Nakamichi Mobile products as a Car Audio Installer, I would be happy to further your quest for compatible cd changers. I can tell you that virtually all older (early to mid 90's) "Sony based" cd changers with 13 pin din plug will work with all Nakamichi head units equipped with CD changer controls. The list of compatible changers include Eclipse, Denon, Kenwood and of course, as you have already discovered, Sony 10 disk changers. Nakamichi has always designed their decks and changers for delivery of the analogue audio signal via external RCA interconnect as apposed to running it internally with the changer control wiring as most other manufactures do.

Does this work well the other way? I have a denon CD headunit (DCT-A100) and I'm looking for a compatible changer (DCH-470s seem a bit thin on the ground) I have a range of changer here (Sony CDX-91, Alpine 5959 and a Clarion 12 disc somewhere).

Any advice on making any of these work with the Denon?
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