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Location:
Canberra
Registered:
August 2003
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Car Audio Question
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Mon, 08 December 2003 00:42
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I have a head unit with a single pair of RCA outs. From this pair I split the RCA's and put them into my amp. With one left/right pair driving the fronts, and the other driving the sub. This setup has worked fine for me up until now, but enter the problem:
Not wanting a fine for talking on the phone, i installed a hands free kit, the switching power supply in the hands free kit is interfering with the front, and a buzzing/whirring can be heard through them.
My local dealer sold me an in-line filter which nicely blots out this whirring, problem is it also cut's out the sub! This happens if the filter is installed either before or after the splitter on the RCA's (see picture below)
Is there any way i can hook this up to filter the noise, but not the sub? keeping costs to a minimum? The only option i can think of right now is to replace the head unit with something that has 2 pairs of RCA outs (not ideal but was on the cards in the next 12 months).
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Location:
Canberra
Registered:
May 2002
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Re: Car Audio Question
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Mon, 08 December 2003 01:30
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Take out your Hands Free kit and buy a Hands Free for your phone.
What sort of phone do you have?
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Location:
Canberra
Registered:
August 2003
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Re: Car Audio Question
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Mon, 08 December 2003 02:24
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It is a nokia 7250 with a genuine nokia hands free kit.
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Location:
Canberra
Registered:
August 2003
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Re: Car Audio Question
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Tue, 09 December 2003 00:46
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bump
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I supported Toymods
Location:
Australia
Registered:
November 2003
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Re: Car Audio Question
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Tue, 09 December 2003 04:33
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Do as he said
Chuck out the handsfree kit, and just get a clip in one
But if you want to keep it, get rid of that filter, and try adn get a better earth on the deck/amp/kit.
Bad earths cause interference (hello Shane  )
Failing that, buy a quality filter, one that doesnt cut out subs
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Location:
Canberra
Registered:
August 2003
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Location:
Canberra
Registered:
August 2003
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Re: Car Audio Question
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Wed, 07 January 2004 01:12
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Solution:
New Head unit(Alpine mp3), Amp (alpine monoblock for sub) and Rear Speakers (focal Access 6 inch co-ax).
I was going to get all these things eventually, i just thought now was the time, and it solved the problem!!
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Location:
Melbourne
Registered:
October 2003
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Re: Car Audio Question
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Wed, 07 January 2004 21:02
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what models are the Head Unit and D-class amp?
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Location:
Canberra
Registered:
August 2003
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Re: Car Audio Question
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Wed, 07 January 2004 22:06
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Head unit is CDA 9807, Amp is mrp-m350 neither are overly special but had all the features I need.
For the record the pioneer 4*75 amp drives the focal 100v2's (front) and the focal access 165ca's (Rear). The sub is a pioneer 10' vccs Dual voice call, in a custom fiber glass box.
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