you cannot directly measure the speaker impedance with a VOA meter the ohm meter will give you a measure of resistance. not the same. Impedance is the measure of resistance to current flow in alternating current circuits. It is calculated at a standard frequency (usually 1Khz) and varies over the frequency spectrum.IDK what my Infinitys are but I can check later when I get home. However, you can use a VOM (Volt Ohm Meter) to check the resistance.
It sounds like you're asking if you can use the factory Infinity passive crossovers with aftermarket speakers. The answer is "no" for the following reasons:I want to up grade my front speakers to components will i get highs and lows with them . I heard the front door speakers are bass spekaers will the component speaker with cross over work ok .
Reason 2. Passive crossovers are impedance changing devices. These devices are designed specifically to work on a particular impedance speaker, or load. For example, let's look at the math required for a very simple high-pass crossover: 0.159/(C x R) = Ftdogshemi said:What size are those drivers, and what frequency will they being doing their duty?
AudioNutz said:...Blah, Blah, Blah... BUT... They are currently being powered by the original Infinity amplifier, so they are crossed over much higher than they are capable of playing. What frequency is that, you ask? At first I thought, "Hmmm, Good question", because nobody knows what frequencies the Infinity "Premium" sound system is crossed over at...
But then I whipped out my RTA:
The dash drivers are rolling off about 400Hz.
The midbass drivers are rolling off about 500Hz.
The first part of this statement is correct. You cannot directly measure the speaker impedance with a VOA meter.you cannot directly measure the speaker impedance with a VOA meter the ohm meter will give you a measure of resistance. not the same. Impedance is the measure of resistance to current flow in alternating current circuits. It is calculated at a standard frequency (usually 1Khz) and varies over the frequency spectrum.
AudioNutz said:The impedance is the measure of opposition to a "sinusoidal alternating electric current".
Sinusoidal: As in a sine wave created by musical energy.
Alternating electric current: As in the wattage coming from the amplifier.
Your speakers will have an (average) impedance rating for each voice coil. Connecting one or more voice coils together may raise or lower their combined impedance. Wiring two voice coils in parallel will usually lower their impedance, while wiring two voice coils in series will usually raise their impedance.
So in summary, the impedance would be your speakers measure of opposition (Some might incorrectly say "resistance") to your amplifiers musical energy. (And yes, you do need some opposition)
Oh I'm totally in on that secret. I put my tweeters in the a-pillar as a blatant rip off of your work. Where do I send the royalties check?I've done a fair amount of research on the acoustics of the Dodge trucks, specifically towards improving the Infinity sound system. You can read some suggestions here:
Component Door speakers
There's even a write up for a "How To:" article here:
Build custom A-Pillar panels for the 3rd Gen Dodge Ram
It's all a secret, so don't tell anyone. :secret2:
Send it to me, of course!...Where do I send the royalties check?
That's really too bad. Mine didn't obstruct the view at all, since they were built lower than your field of view. The sound benefits were huge when compared to having the midrange in other locations....I wasn't able to put my midbass/midrange up there, as it would obstruct my view too much, but it blends well enough in the doors with some TA...
New fangled? Point source drivers have been around longer than you or I have been alive.Well it helps to have newfangled point source drivers where a tweeter isn't necessary...
No, 4". The midbass were still in the doors....Were those 6.5" drivers?
Try a 6.5" with 3" mounting depth right above the speedometer. Of course I'd only be hitting dumb kids that run out into the middle of the road, and we could do without a few more of them. I'd like to go with a 3 way frontstage, because I'm getting tired of my current speakers, but doubt that'll be happening anytime soon with a tighter budget. Plus my head unit is running my 2 way front active, and I'd have to buy some more hardware to make a 3 way active work.No, 4". The midbass were still in the doors.