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View Full Version : Re: Subwoofer for 124 body Mercedes (picture)


Kevin Murray
April 17th 04, 01:57 AM
Are you saying that you can resolve the origin of wavelengths below 50Hz?
Furthermore, not everyone can afford a Mercedes where the trunk is acoustically
isolated from the interior of the car. Most cars owned by contributors to this
NG pass bass notes into the passenger cabin quite easily.

For the money you paid for your subwoofer installation I could pay for my entire
system all over again. Passengers in my car remark that the bass "makes their
hair move". If you can't sit in the car then what good is your stupendous
output?

Kevin Murray
"FM modulators rule"
"Gettin' the hang of this NG posting stuff"


"Peter Klein" > wrote in message
news:QyVfc.4731$0b4.14100@attbi_s51...
> If you really believe that firing a pair of subwoofers toward the rear of
> your car's trunk will give you deep, tight, bass INSIDE your car, then you
> must be sitting in the car following you. Most car stereo stores push sealed
> boxes when a cutomer buys two woofers. The sealed boxes are the most
> profitable and the easiest for the salesperson to sell. If one contacts the
> maker (supplier) of the brand woofer, they are willing to share the
> information about different style enclosures for their product. For my 124,
> I wanted the bass to be delivered into the interior of the car and I didn't
> want to give up the entire trunk. Because Mercedes has spent huge
> engineering dollars keeping outside noise outside, I was interested when the
> box builder suggested a bandpass enclosure with a partially external, square
> (so it won't whistle like round ports) port which would exit from the top of
> the box. Because the 124 trunk has funky shaped sides, and the height is
> fixed, the variable measurement was the front to rear depth. That shape
> would put the port directly below the "first aid kit cover". When measuring,
> we noticed the gas filler pipe would prevent the box from being pushed back
> all the way so the rear, top corner of the box was deleted. A single
> Cerwin-Vega! 12" Accurate Image Subwoofer was chosen per their box design
> specs. This woofer's voice coil was designed by the same German design house
> who later did JL's component speakers. After the box was built, it was
> upholstered in black carpet to match the floor I had put in the trunk. The
> bass is driven by an Earthquake 200X amp which provides 300wrms @ 4 ohms
> mono. At full attenuation the bass is so huge, the windows flex and nobody
> can talk! I keep it turned down to a hi fidelity level. The picture shows
> the sub spanning the width of the trunk, and the "bin cover" part of the
> floor on a continuous hinge from Home Depot. P.
>
>
>

Peter Klein
May 8th 04, 12:28 AM
A 124 Mercedes is about 17 years old and can be bought almost anywhere for
$6-8,000. While speaking with a Sony rep he explained that the FM modulator
was a big money maker for dealers because they could add a changer to any
car that had a radio. He didn't dispute the fact that such a hookup would
produce sound quality the same as FM radio. Compact disc, while it lasts, is
much clearer, through an amplifier, and most enthusiasts know it. P.


"Kevin Murray" > wrote in message
ble.rogers.com...
> Are you saying that you can resolve the origin of wavelengths below 50Hz?
> Furthermore, not everyone can afford a Mercedes where the trunk is
acoustically
> isolated from the interior of the car. Most cars owned by contributors to
this
> NG pass bass notes into the passenger cabin quite easily.
>
> For the money you paid for your subwoofer installation I could pay for my
entire
> system all over again. Passengers in my car remark that the bass "makes
their
> hair move". If you can't sit in the car then what good is your stupendous
> output?
>
> Kevin Murray
> "FM modulators rule"
> "Gettin' the hang of this NG posting stuff"
>
>
> "Peter Klein" > wrote in message
> news:QyVfc.4731$0b4.14100@attbi_s51...
> > If you really believe that firing a pair of subwoofers toward the rear
of
> > your car's trunk will give you deep, tight, bass INSIDE your car, then
you
> > must be sitting in the car following you. Most car stereo stores push
sealed
> > boxes when a cutomer buys two woofers. The sealed boxes are the most
> > profitable and the easiest for the salesperson to sell. If one contacts
the
> > maker (supplier) of the brand woofer, they are willing to share the
> > information about different style enclosures for their product. For my
124,
> > I wanted the bass to be delivered into the interior of the car and I
didn't
> > want to give up the entire trunk. Because Mercedes has spent huge
> > engineering dollars keeping outside noise outside, I was interested when
the
> > box builder suggested a bandpass enclosure with a partially external,
square
> > (so it won't whistle like round ports) port which would exit from the
top of
> > the box. Because the 124 trunk has funky shaped sides, and the height is
> > fixed, the variable measurement was the front to rear depth. That shape
> > would put the port directly below the "first aid kit cover". When
measuring,
> > we noticed the gas filler pipe would prevent the box from being pushed
back
> > all the way so the rear, top corner of the box was deleted. A single
> > Cerwin-Vega! 12" Accurate Image Subwoofer was chosen per their box
design
> > specs. This woofer's voice coil was designed by the same German design
house
> > who later did JL's component speakers. After the box was built, it was
> > upholstered in black carpet to match the floor I had put in the trunk.
The
> > bass is driven by an Earthquake 200X amp which provides 300wrms @ 4 ohms
> > mono. At full attenuation the bass is so huge, the windows flex and
nobody
> > can talk! I keep it turned down to a hi fidelity level. The picture
shows
> > the sub spanning the width of the trunk, and the "bin cover" part of the
> > floor on a continuous hinge from Home Depot. P.
> >
> >
> >
>
>

Kevin Murray
May 8th 04, 02:44 PM
I wouldn't argue that direct coupling the CD output to the amplifier is better
than going through a coupling/adapter device. However, it often happens that due
to certain constraints (budget being a big one) an FM modulator is the most
elegant solution. Provided the modulator performance is good, the sound quality
is limited by the tuner section of the receiver. For most people the difference
in sound quality goes unnoticed, therefore the higher cost of a new aftermarket
receiver makes little sense to them. Not everyone is on a quest for sonic
perfection. In fact I'd say that few people truly are.



"Peter Klein" > wrote in message
news:5YUmc.47703$0H1.4484007@attbi_s54...
> A 124 Mercedes is about 17 years old and can be bought almost anywhere for
> $6-8,000. While speaking with a Sony rep he explained that the FM modulator
> was a big money maker for dealers because they could add a changer to any
> car that had a radio. He didn't dispute the fact that such a hookup would
> produce sound quality the same as FM radio. Compact disc, while it lasts, is
> much clearer, through an amplifier, and most enthusiasts know it. P.
>
>
> "Kevin Murray" > wrote in message
> ble.rogers.com...
> > Are you saying that you can resolve the origin of wavelengths below 50Hz?
> > Furthermore, not everyone can afford a Mercedes where the trunk is
> acoustically
> > isolated from the interior of the car. Most cars owned by contributors to
> this
> > NG pass bass notes into the passenger cabin quite easily.
> >
> > For the money you paid for your subwoofer installation I could pay for my
> entire
> > system all over again. Passengers in my car remark that the bass "makes
> their
> > hair move". If you can't sit in the car then what good is your stupendous
> > output?
> >
> > Kevin Murray
> > "FM modulators rule"
> > "Gettin' the hang of this NG posting stuff"
> >
> >
> > "Peter Klein" > wrote in message
> > news:QyVfc.4731$0b4.14100@attbi_s51...
> > > If you really believe that firing a pair of subwoofers toward the rear
> of
> > > your car's trunk will give you deep, tight, bass INSIDE your car, then
> you
> > > must be sitting in the car following you. Most car stereo stores push
> sealed
> > > boxes when a cutomer buys two woofers. The sealed boxes are the most
> > > profitable and the easiest for the salesperson to sell. If one contacts
> the
> > > maker (supplier) of the brand woofer, they are willing to share the
> > > information about different style enclosures for their product. For my
> 124,
> > > I wanted the bass to be delivered into the interior of the car and I
> didn't
> > > want to give up the entire trunk. Because Mercedes has spent huge
> > > engineering dollars keeping outside noise outside, I was interested when
> the
> > > box builder suggested a bandpass enclosure with a partially external,
> square
> > > (so it won't whistle like round ports) port which would exit from the
> top of
> > > the box. Because the 124 trunk has funky shaped sides, and the height is
> > > fixed, the variable measurement was the front to rear depth. That shape
> > > would put the port directly below the "first aid kit cover". When
> measuring,
> > > we noticed the gas filler pipe would prevent the box from being pushed
> back
> > > all the way so the rear, top corner of the box was deleted. A single
> > > Cerwin-Vega! 12" Accurate Image Subwoofer was chosen per their box
> design
> > > specs. This woofer's voice coil was designed by the same German design
> house
> > > who later did JL's component speakers. After the box was built, it was
> > > upholstered in black carpet to match the floor I had put in the trunk.
> The
> > > bass is driven by an Earthquake 200X amp which provides 300wrms @ 4 ohms
> > > mono. At full attenuation the bass is so huge, the windows flex and
> nobody
> > > can talk! I keep it turned down to a hi fidelity level. The picture
> shows
> > > the sub spanning the width of the trunk, and the "bin cover" part of the
> > > floor on a continuous hinge from Home Depot. P.
> > >
> > >
> > >
> >
> >
>
>