Infinity Basslink On EBay

[KillJoy]

I found this 10" Infinity BassLink (http://cgi.ebay.com/Infinity-basslink-self-powered-10-subwoofer_W0QQitemZ11002916012 7QQihZ001QQcategoryZ32822QQssP ageNameZWDVWQQrdZ1QQcmdZViewIt em)on EBay today. It is currently going for $100.

It is offered by a guy in Reynoldsburg, OH. He is on a local car forum, and said he will end it early if anyone there wants it ;)

KillJoy

[Marauder_Santa]

I have had this unit in my Marauder pretty much from the day I bought the car new. I had the unit in my truck before the Marauder. It fits nicely in the area where the OEM sub is located. OEM sub will have to be removed. I like the sound. Be careful on install. The audio place punctured the gas tank - they paid for gas tank replacement and car rental and mercury dealer reinstalled the sub - no problems and good sound.

[Breadfan]

I got one - here's the install: http://www.neuralimpulse.com/cars/03marauder01.html

A point on note, I'm not sure if i ever updated that or not, but basically the high lines going to the rear speakers - DO NOT use them. These lines have bass choked to them.

Instead, I found out the inputs for the factory amp are actually low level inputs! So, I spiced in a really nice RCA cable and then a nice RCA splitter so I have the low level input going to both rear-low inputs on the Basslink.

Sound quality is nice, much more thump than stock.

I bolted mine to the lower floor to avoid the gas tank.

[magindat]

While that works, it is actually a balanced signal. When you splice into the RCA you are only getting half the signal. Most amps, unless specifically designed to accept balanced inputs will need a signal converter.

However, one of the reasons the Basslink works well in this situation is because the servo control amplifier grabs control of the speaker to prevent over-excursion during the non-signal portion of the half signal.




Instead, I found out the inputs for the factory amp are actually low level inputs! So, I spiced in a really nice RCA cable and then a nice RCA splitter so I have the low level input going to both rear-low inputs on the Basslink.

[JACook]

I bolted mine to the lower floor to avoid the gas tank.
I seem to recall seeing a template produced by Ford, to show law enforcement agencies where they
could and where they couldn't drill holes in the trunk area.
Ah, yes. Here (https://www.fleet.ford.com/showroom/CVPI/TrunkLoading.asp#) it is.

[JACook]

While that works, it is actually a balanced signal. When you splice into the RCA you are only getting half the signal. Most amps, unless specifically designed to accept balanced inputs will need a signal converter.

However, one of the reasons the Basslink works well in this situation is because the servo control amplifier grabs control of the speaker to prevent over-excursion during the non-signal portion of the half signal.
A balanced input is one with both signal lines having the same impedance with respect to ground.
The two signal conductors carry exactly the same signal, but with opposite polarity. The receiving
end then detects only the difference in amplitude between the two signal lines. This gives immunity
to induced noise, since electrical noise induced on the signal lines would have the same polarity
in both. This is also why the lines are typically twisted around each other, to improve the likelihood
that induced noise will be the same on both lines, and thus get rejected by the receiving gear.

Because the two signal lines carry the same information, when you connect a balanced output to an
unbalanced input, or vice versa, the only thing you lose is some amplitude, and of course, the noise
immunity. The connected gear will still see the complete sine wave on the remaining signal line.

What a signal converter (AKA 'DI box' in the pro-audio world) does, is provide a means to preserve
the noise immunity of the balanced portion of the signal chain, whilst allowing the signal to be
connected to the unbalanced gear. In pro audio, this is usually something like a guitar amp that is
being fed into a mixer. These come in two types, passive and active. The passive is little more than
a transformer in a box, while the active, as the name implies, uses electronic circuitry to receive,
and then redrive the signal. In both types, but particularly in the case of the passive box, the quality
of the transformer is critical, especially in the low frequencies. A good Jensen transformer costs
about $75 bare, so I'd be leery of any passive 'signal converter' selling for less than about $100.
Good active DI boxes are also in the ~$150 price range.

Usually, for short runs, balanced interconnects are overkill.