Hello! Willkommen, Casay Hay, Bienvenidos or Bula Bula.
I did a forum search on the NEC Chip used in Chrysler Minivans from 1991 to 2000 & the Infinity Acoustic 10 equipped Cars & system. only found I think 2 posts about this chip. There is an Nice post about the History of these systems here on ALLPAR if you are a Mopar fan.
There is also a Blurb on how to fix these speakers that came with the amps if you are into that sort of thing. But it covers a few more tips on how to repair them.
if you take a look at them, here is the Wire diagram of how these complete units get hooked up if you want to just pull a set and go with it for projects.
- Red – amplifier 12V input
- Green – speaker level audio input from head unit, positive
- Black – speaker level audio input from head unit, negative
- Gray – amplifier ground
So I am going to Post some stuff about this chip and links for those folks that are interested in this stuff.
I AM NOOB.
First lets start with the specs I think people care most about:
The uPC1230H2 chip is a low-frequency bridge amplifier.
- Supply voltage: nominal = 13.2 V, maximum = 18V;
- Maximum output power (Vcc = 13.2 V, RL = 4 Ohms, THD = 10%) = 20 W;
- Standby current consumption = 90 mA;
- Operating temperature range = -30 ... + 75 ° C.
Here is a Pin out of the chip:
No. ----------- Symbol ----- ----- Appointment
1 ------------------OUT2--- Invert channel output
2 -----------------PTSTR2---- Inverting channel voltage boost
3 --------------------N1----- Non-inverting channel feedback pin 1
4 ------------------Nfb2----- Inverting Channel Input
5 -------------------Nfb1----- Non-inverting channel inverting input
6 --------------------IN1----- Non-inverting input of non-inverting channel
7 --------------------N2----- Non-inverting channel output terminal 2
8 --------------------Fltr----- Conclusion to the filtering capacitor
9 ------------------- + Vcc----- Supply voltage
10 --------------------BTSTR1----- Non-inverting channel voltage boost
11 --------------------OUT1----- Non-inverting channel output
12 --------------------GND----- General conclusion
These 2 videos may be the ONLY ones you a have seen about these up close as I keep them on hand. I love them really for the audio quality and the flexibility of them.
FIrst video goes over the back of the board and silkscreen as this may be helpful to some of you that actually Build amps for the rest of us to enjoy.
The next video goes over the top of the board, and where you find these and the chip in its natural habitat
Here are some photos. One day I will become a member and not have to load them like this.
I don't think anyone else has really made a video about these chips or on an amp Dyno. But I do have a DD-1, but i have no way to test power. I really should have got an O scope by now. I will soon one day.
Now here is the thing. I don't know CRAP about Amp design. I can barely fix my own stuff or troubleshoot it. But I love watching you folks do it. But I am good at finding info, and posting stuff. Albeit, not that clearly.
So... If anyone wants to give idea on maybe how to make these sound better, or has andy testing data, that would be great.
One user, I forgot his name said he used these a lot back in the day. Another asked about a data sheet. I hope that helps. SO Now on to some Questions I have about this Chip Amp:
Are their Pin Compatible models out there of newer chips that would work in the same curtis?
This chip sounds amazing to me in the car. Since its so small, and has good power, and like zero noise I can hear, I use it on my front speakers. I know I should upgrade, but I like the sound. Is this chip still sounds good to me, does it sound good to you guys?
I am willing to Ship one out if on of you guys (or that strange girl who is into hifi testing) can do Dyno tests at higher voltages? Maybe eek out more clean output at its max voltage of 18v?
Do any of you have any recommendations about the OEM Chrysler Infinity boards that you think is a worthwhile audible upgrade? Nothing crazy, just cheap and cheerful audible mods?
Are there differences between the Japanese chips and the Malaysian ones? I see two kinds of chips out there.
It seems like the newer amps in the plastic case have a High Pass and a low pass instead of running full out. Most of these are potted and come in the plastic case like this here. Also the pin out is different as well. I made a post about it on the Chrysler minivan forms. They look like this here:
They seem to be the same parts. THey are all just potted so its harder to get at them if you get these models.
I am going to post some link here at the END so that people who want to know about this amp, can find the resources on the web:
His site goes over the Chip amp and he built a small version.
Also A link to a datasheet (Not full)
Here is a Link to the full 8 page data sheet in ENGLISH.
Radio Museum has some cool stuff about this chip and some Pics of the Japanese units that Chrysler used on their Acoustic 10 systems.
Link from another.. Just in case.. any of these don't work for you in the future.
If you have any other questions, I have to admit, I'm no E.E. So I can't really help ya. But I know some of you live and breath this stuff. I hope I helped out a few of you!