Omega Owners Forum
Omega Help Area => Omega Electrical and Audio Help => Topic started by: TheBoy on 21 September 2008, 21:55:58
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Any problems, I'm guessing particularly with cable run for mic - would length be an issue?
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I wouldnt bother go blue tooth instead.
ALDI have a special offer head unit for £49.99
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Any problems, I'm guessing particularly with cable run for mic - would length be an issue?
Use a good quality shielded Co-axial cable, and try to use a long single piece cable instead of joining two shorter bits to prevent any stray interference. Solder at rear of mic and at plug end if you understand what I mean.
Can`t see why you couldn`t use a 5m length of RCA lead for the Mic?
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I wouldnt bother go blue tooth instead.
ALDI have a special offer head unit for £49.99
I already have a Nokia CK-7W bluetooth handfree carkit in the car as well.
Ideally, I would like to fit the telematics unit in addition, based on:
1) Better integration, and ability to control calls without taking hands off wheel.
2) Bluetooth sucks. The standard is a bit undefined when it comes to handsfree.
3) Making or receiving calls via bluetooth absolutely mullers the battery on the phone.
4) Better signal - cellphones inside a metal tin ain't gonna get the best reception!
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Any problems, I'm guessing particularly with cable run for mic - would length be an issue?
Use a good quality shielded Co-axial cable, and try to use a long single piece cable instead of joining two shorter bits to prevent any stray interference. Solder at rear of mic and at plug end if you understand what I mean.
Can`t see why you couldn`t use a 5m length of RCA lead for the Mic?
Thanks.
The Mic is in the courtesy light, so can coax from the plug on there all the way to the telematics plug. Sadly, at telematics plug end, I may have to join, as its a large 32pin plug, and not any standard jack. Would that be OK?
Also, cellular aerial, should I unpick from loom and pull it back to boot, or simply extend it (easier). The plug on it does not match the back of telematics, so would need some kind of adapter.
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I wouldnt bother go blue tooth instead.
ALDI have a special offer head unit for £49.99
Most of the major manufacturers are struggling to crack a reliable bluetooth kit - so do you really think that Aldi are going to manage on a system costing less than £50 ? Wow, is that unit going to be problematic !!
::)
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I wouldnt bother go blue tooth instead.
ALDI have a special offer head unit for £49.99
Most of the major manufacturers are struggling to crack a reliable bluetooth kit - so do you really think that Aldi are going to manage on a system costing less than £50 ? Wow, is that unit going to be problematic !!
::)
Nokia CK-7W works well with Nokia mobiles certified for use with Nokia CK-7W mobile phones :y. Piss poor with any other phone though, including other Nokias >:(
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The Mic is in the courtesy light, so can coax from the plug on there all the way to the telematics plug. Sadly, at telematics plug end, I may have to join, as its a large 32pin plug, and not any standard jack. Would that be OK?
Also, cellular aerial, should I unpick from loom and pull it back to boot, or simply extend it (easier). The plug on it does not match the back of telematics, so would need some kind of adapter.
The fewer joints you have the better. Not so bad joining a standard cable, but where coax is concerned, the joint is usually made outside the screaned sheath, and thats where problems can occur. If an adaptor is unavailable (as makes a better joint that most of us can make) then we would be a bit clever when making our joints to ensure that the centre core is joined and insulated and then wrap some screening around the outside again, ensuring that your new joint is now effectively inside a new bit of coax.
A bit overkill, but will eliminate stray interference a little more.
:y
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Any problems, I'm guessing particularly with cable run for mic - would length be an issue?
Use a good quality shielded Co-axial cable, and try to use a long single piece cable instead of joining two shorter bits to prevent any stray interference. Solder at rear of mic and at plug end if you understand what I mean.
Can`t see why you couldn`t use a 5m length of RCA lead for the Mic?
Thanks.
The Mic is in the courtesy light, so can coax from the plug on there all the way to the telematics plug. Sadly, at telematics plug end, I may have to join, as its a large 32pin plug, and not any standard jack. Would that be OK?
Also, cellular aerial, should I unpick from loom and pull it back to boot, or simply extend it (easier). The plug on it does not match the back of telematics, so would need some kind of adapter.
Should be fine, seem to recall as the MIC is a 3 wire job, supply + 0V + Signal. The Mic is certainly a basic electret job so has an inbuilt mini FET amp and hence the signal is not as small as you would think.
Just use reasonable quality well shielded coax for the 0V and signal and only connectthe 0V to chassis at one end to avoid ground loops.
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Any problems, I'm guessing particularly with cable run for mic - would length be an issue?
Use a good quality shielded Co-axial cable, and try to use a long single piece cable instead of joining two shorter bits to prevent any stray interference. Solder at rear of mic and at plug end if you understand what I mean.
Can`t see why you couldn`t use a 5m length of RCA lead for the Mic?
Thanks.
The Mic is in the courtesy light, so can coax from the plug on there all the way to the telematics plug. Sadly, at telematics plug end, I may have to join, as its a large 32pin plug, and not any standard jack. Would that be OK?
Also, cellular aerial, should I unpick from loom and pull it back to boot, or simply extend it (easier). The plug on it does not match the back of telematics, so would need some kind of adapter.
Should be fine, seem to recall as the MIC is a 3 wire job, supply + 0V + Signal. The Mic is certainly a basic electret job so has an inbuilt mini FET amp and hence the signal is not as small as you would think.
Just use reasonable quality well shielded coax for the 0V and signal and only connectthe 0V to chassis at one end to avoid ground loops.
Hmmmm, wonder if thats my the ccrt700, people always said I sounded faint... ...the wiring diag I used (from Astra iirc) only had 2 wires to Mic ::)
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Thinking about it, my courtesy light can with a long length of wire already attached, fairly certain it was just 2 wires, not coax
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Interesting, wonder if they are using a phantom feed for it.....I know when I looked at the MIC assembly it used a 3 pin electret
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Interesting, wonder if they are using a phantom feed for it.....I know when I looked at the MIC assembly it used a 3 pin electret
At head unit end, I am only running 2 wires - MIC+ and MIC-
But you know what my memory is like, I'll investigate at lunchtime...
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i would be most interested in the guide when done tb. Where you siteing it? In the old cd changer cuby hole?
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The bose amp is going in the cubby hole on mine where the cd changer would be.....to give max room in the boot!
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interesting. What is the telematics, and how would you know if your car has it installed?
Is it anything to do with the phone prewiring? as I have the extra ariel on the roof, and the tunnel plastic has drill holes for what looks like a phone cradle of some description.
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i would be most interested in the guide when done tb. Where you siteing it? In the old cd changer cuby hole?
I reckon I may just be able to squeeze telematics and CDC3 in to the BOSE amp shelf, hence not really 'wasting' the space so much. Might need a spare shelf to practice on though.
That would free up the cubby hole for general junk, and obviously the space taken up with the Carin unit would be freed as well, as the Carin would no longer be needed...
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interesting. What is the telematics, and how would you know if your car has it installed?
Is it anything to do with the phone prewiring? as I have the extra ariel on the roof, and the tunnel plastic has drill holes for what looks like a phone cradle of some description.
No prefacelift has this type of telematics unit, facelifts only. Some earlier cars had a phone option, but very rare. ccrt700 had telematics in headunit (well, bolted on back).
Many Omegas are prewired, irrespective of telematics
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Thanks TB :y
so what are the advantages of telematics as opposed to say the head unit with the sim card slot (don't know which one it is) or an install like a nokia?
I agree about the whole bluetooth thing, in that compatibility will always be a compromise, and of course the look of the car is going to get compromised with all the little screens and cables everywhere.
Mine has phone pre-wiring, but I take it that this is totally different to having a phone option?
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Thanks TB :y
so what are the advantages of telematics as opposed to say the head unit with the sim card slot (don't know which one it is) or an install like a nokia?
I agree about the whole bluetooth thing, in that compatibility will always be a compromise, and of course the look of the car is going to get compromised with all the little screens and cables everywhere.
Mine has phone pre-wiring, but I take it that this is totally different to having a phone option?
No advantage over ccrt700 from phone point of view. Its just my chosen headunit has a seperate telematics rather than built in...
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Pic of Mic and wiring. 3 wires, only 2 connected...
(http://theboy.omegaowners.com/oofpics/odds/IMG_2788.JPG)
(http://theboy.omegaowners.com/oofpics/odds/IMG_2790.JPG)
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At first glance (I would need to check) that wiring looks different to mine as on mine the black wire (an extension of the cable shield) is connected to an un-used pin.....
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At first glance (I would need to check) that wiring looks different to mine as on mine the black wire (an extension of the cable shield) is connected to an un-used pin.....
The wiring on my bit of Mic loom (from a 1999 car fitted with CCRT700):
Pin1: Blue/Red
Pin2: Black (which looks like sheilding)
Pin3: Green/something
Ping4: N/C
As you can see, my mic is wired to pins 2 and 3. Wiring diags suggest facelifts (or at least 2002 on) wired across 1 and 2.
Would this suggest a different mic?
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Possibly
(http://i23.photobucket.com/albums/b394/Marks_DTM_Calib/Microphone.jpg)
The above also shows that for a telematics setup that both pins of the mic are wired directly to the telematics unit without grounding any pins!
So ensure this is the case as a first port of call!
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Possibly
(http://i23.photobucket.com/albums/b394/Marks_DTM_Calib/Microphone.jpg)
The above also shows that for a telematics setup that both pins of the mic are wired directly to the telematics unit without grounding any pins!
So ensure this is the case as a first port of call!
To test, I have wired mic up to a short length (6") cable from telematics plug, using the signal pins 1 and 17. Pin 2 of telematics (shielding) is disconnected.
At normal speech levels, remote party can't hear me if I'm more than 6" from Mic.
My mic is wired across pins 2 and 3 of mic connector, rather than 1 and 2, as my mic has no connection to pin 1.
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Not sure if this helps or not, as unsure about vauxhall Mics, but in the aftermarket world there are many different types of phone mic, and although virtually all of them have the same 3.5mm jack plug, they often have different impedances resulting in different levels of voice - sounds like a similar problem you are experiencing by having to shout at the mic ?