Sound System
 

Hey I am about to put a very loud, very expensive sound system in my
’98 A4 1.8T. Before I start, has anybody done this and have any
suggestions or things I should know about Audi? I am a professional
installer and I know what I am doing, but have never installed a
system like this in an Audi. So if anyone can think of anything that I
should be aware of let me know..thanks.

ps

if you are curious about what I am putting in, here is a list:

Eclipse 5423 Head Unit
Eclipse DA6213 2-channel Amp (bridged mono RMS 1100w @ 4ohms)
Boston Acoustics GT-40 4-Channel Amp (4x45w RMS @4ohms)
Eclipse SC8254 Component Set (Front)
Boston Acoustics NX-67 (Rear Coaxial)
Two Xtant 12" X-Series Subwoofers
Two 1.2 Farad Phoenix Gold Capacitors
Street Wires and Rockford Fosgate wiring all the way around.

--
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You may want to check out the audiworld A4 forums, there is always
discussion on sound systems there.... Do a search and you'll probably
come up with what you're looking for....

Dan D
'04 A4 1.8Tq MT-6
Central NJ USA

Make sure you don't short the K-line to the aftermarket head unit.

Mechanics will blow their VAGtool if you do that. A lot of wiring adapter
looms are miswired.


"TCCdestroy" > wrote in message
news:1_602231_5760a6508e2e574e22a987c65e0881e4@aut oforumz.com...
> Hey I am about to put a very loud, very expensive sound system in my
> '98 A4 1.8T. Before I start, has anybody done this and have any
> suggestions or things I should know about Audi? I am a professional
> installer and I know what I am doing, but have never installed a
> system like this in an Audi. So if anyone can think of anything that I
> should be aware of let me know..thanks.
>
> ps
>
> if you are curious about what I am putting in, here is a list:
>
> Eclipse 5423 Head Unit
> Eclipse DA6213 2-channel Amp (bridged mono RMS 1100w @ 4ohms)
> Boston Acoustics GT-40 4-Channel Amp (4x45w RMS @4ohms)
> Eclipse SC8254 Component Set (Front)
> Boston Acoustics NX-67 (Rear Coaxial)
> Two Xtant 12" X-Series Subwoofers
> Two 1.2 Farad Phoenix Gold Capacitors
> Street Wires and Rockford Fosgate wiring all the way around.
>
> --
> Posted using the http://www.autoforumz.com interface, at author's request
> Articles individually checked for conformance to usenet standards
> Topic URL: http://www.autoforumz.com/Audi-Sound...ict123725.html
> Visit Topic URL to contact author (reg. req'd). Report abuse:
> http://www.autoforumz.com/eform.php?p=602231

I'm sure you know this, but if you're planning to keep the original head
unit, its output impedance is not the standard 4 Ohms. I seem to remember it
was 2 Ohms.

"TCCdestroy" > escribió en el mensaje
news:1_602231_5760a6508e2e574e22a987c65e0881e4@aut oforumz.com...
> Hey I am about to put a very loud, very expensive sound system in my
> '98 A4 1.8T. Before I start, has anybody done this and have any
> suggestions or things I should know about Audi? I am a professional
> installer and I know what I am doing, but have never installed a
> system like this in an Audi. So if anyone can think of anything that I
> should be aware of let me know..thanks.
>
> ps
>
> if you are curious about what I am putting in, here is a list:
>
> Eclipse 5423 Head Unit
> Eclipse DA6213 2-channel Amp (bridged mono RMS 1100w @ 4ohms)
> Boston Acoustics GT-40 4-Channel Amp (4x45w RMS @4ohms)
> Eclipse SC8254 Component Set (Front)
> Boston Acoustics NX-67 (Rear Coaxial)
> Two Xtant 12" X-Series Subwoofers
> Two 1.2 Farad Phoenix Gold Capacitors
> Street Wires and Rockford Fosgate wiring all the way around.
>
> --
> Posted using the http://www.autoforumz.com interface, at author's request
> Articles individually checked for conformance to usenet standards
> Topic URL: http://www.autoforumz.com/Audi-Sound...ict123725.html
> Visit Topic URL to contact author (reg. req'd). Report abuse:
> http://www.autoforumz.com/eform.php?p=602231

JP Roberts wrote:
> I'm sure you know this, but if you're planning to keep the original head
> unit, its output impedance is not the standard 4 Ohms. I seem to remember it
> was 2 Ohms.

Huh? These days, any solid-state amp that costs over two bucks oughta
have an output impedance measured in tenths or even hundredths of an
ohm. If you mean that the Audi head unit is designed to drive a 2 ohm
*input* impedance, well, that's a good thing, not a bad thing, and
should pose no problem when driving 4-ohm speakers. Meanwhile, if
you're talking about the line-level output impedance, rather than the
speaker-level output, then 2 vs. 4 ohms ain't gonna mean a thing - the
input impedances of today's separate amps tend to be up in the tens of
thousands of ohms.

--
Mike Smith

Obviously talking about input impedance. In practical terms what this means
is that if you fit a pair of 4 Ohm speakers, you're only just going to get
half the desired output (read volume), which is a real pain.

"Mike Smith" > escribió en el mensaje
...
> JP Roberts wrote:
>> I'm sure you know this, but if you're planning to keep the original head
>> unit, its output impedance is not the standard 4 Ohms. I seem to remember
>> it was 2 Ohms.
>
> Huh? These days, any solid-state amp that costs over two bucks oughta
> have an output impedance measured in tenths or even hundredths of an ohm.
> If you mean that the Audi head unit is designed to drive a 2 ohm *input*
> impedance, well, that's a good thing, not a bad thing, and should pose no
> problem when driving 4-ohm speakers. Meanwhile, if you're talking about
> the line-level output impedance, rather than the speaker-level output,
> then 2 vs. 4 ohms ain't gonna mean a thing - the input impedances of
> today's separate amps tend to be up in the tens of thousands of ohms.
>
> --
> Mike Smith

"JP Roberts" wrote

> I'm sure you know this, but if you're planning to keep the original
> head unit,

>> Eclipse 5423 Head Unit

TCCdestroy > wrote:

> Hey I am about to put a very loud, very expensive sound system in my
> '98 A4 1.8T. Before I start, has anybody done this and have any
> suggestions or things I should know about Audi? I am a professional
> installer and I know what I am doing, but have never installed a
> system like this in an Audi. So if anyone can think of anything that I
> should be aware of let me know..thanks.

What's the point? - I'm assuming you already have the Gamma setup, in
which case it *really* isn't worth changing it.
--
Steve H 'You're not a real petrolhead unless you've owned an Alfa Romeo'
http://www.italiancar.co.uk - Honda VFR800 - MZ ETZ300 - Golf Cabrio
Alfa 156 2.0 TSpark - Alfa 75 TSpark - Passat 1.8T - COSOC KOTL
BoTAFOT #87 - BoTAFOF #18 - MRO # - UKRMSBC #7 - Apostle #2 - YTC #

"SteveH" wrote
> What's the point? - I'm assuming you already have the Gamma setup, in
> which case it *really* isn't worth changing it.

It's not worth it to replace the crappy OEM HU and speakers??? Maybe
not for someone who only listens to AM radio, but for an average
audiophile there's a lot of room for improvement.

Pete

Pete > wrote:

> "SteveH" wrote
> > What's the point? - I'm assuming you already have the Gamma setup, in
> > which case it *really* isn't worth changing it.
>
> It's not worth it to replace the crappy OEM HU and speakers??? Maybe
> not for someone who only listens to AM radio, but for an average
> audiophile there's a lot of room for improvement.

Well, speaking as what you'd call an 'audiophile', the OEM setup in B5
chassis VAGs is pretty damned good. A car is a pretty crap environment
to listen to music, so it's not really worth spending silly amounts of
money on 'improvements'. You'll only actually get more volume, not
better quality.


--
Steve H 'You're not a real petrolhead unless you've owned an Alfa Romeo'
http://www.italiancar.co.uk - Honda VFR800 - MZ ETZ300 - Golf Cabrio
Alfa 156 2.0 TSpark - Alfa 75 TSpark - Passat 1.8T - COSOC KOTL
BoTAFOT #87 - BoTAFOF #18 - MRO # - UKRMSBC #7 - Apostle #2 - YTC #