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Who makes a good x-over?

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Topic review
   

Expand view Topic review: Who makes a good x-over?

by GlassWolf » Thu Apr 07, 2005 8:05 am

it should help, yeah

by J.W. » Thu Apr 07, 2005 7:59 am

thanks kiki. glad to hear that kicker x-over is a good unit. an 18db slope sounds like it would work great with my setup. my amp currently has 18db slopes and i like the way it sounds. would i notice abig improvement in SQ if i were to add that unit, assuming it was properly setup? i imagine the 5V linedriver would reduce unwanted noise, and the crossovers in that unit are probably better than those in my amp, right?


william, yeah monroe's a sh1t hall! never had to live there, but i've spent the night there a few times too ;)

by GlassWolf » Wed Apr 06, 2005 5:18 pm

I bought my two EQT's and my Orion patametric/preamp 300PSW on ebay
no problems at all.

I forgot about that kicker in dash unit. it's a nice one.
very similar to one RF used to make some time back.

a 24dB/octave XO is good for imaging off-axis. in cars, its a good steep slope.
for audiophiles a shallow slope is preferred, but 6dB is a real bitch on speaker positioning, and it's not nearly as good at power handling for the speakers.. they roll off so shallowly that at high volumes you can have issues.

I run 6dB slopes but I'm after moderate volume and good SQ. most people want decent SQ, and lots of SPL, so 24dB is a far better choice.
12dB is a natural slope for speakers in a car. 18dB is a bit steeper. 24dB is very steep.

by William from NOLA » Wed Apr 06, 2005 4:17 pm

Monroe Hall! I couldn't think of the name of it lol. Yea, it's bare brick on the inside and pretty crappy.

by J.W. » Wed Apr 06, 2005 3:40 pm

those tall dorms? we called them the projects. lol. freshman dorms, irby or monroe hall. coed though ;)

by William from NOLA » Wed Apr 06, 2005 3:28 pm

Yup!

I'm at UNO, but I've been to Tulane several times. I spent the night once on the top floor of the dorms that are right off of Feret st. A shared bathroom really sucks...

by J.W. » Wed Apr 06, 2005 3:22 pm

got ya, so if my amp has a 5V max input, then i should look for something with 5V output? i would need something to reduce the output of the AC Three.1 if my amp had a 5V input right? the kicker on the other hand would be just right since it has 5V outputs huh?

good analogy, maybe you should change your major :) college in NO is fun; i went to Tulane. good times :)

by William from NOLA » Wed Apr 06, 2005 2:39 pm

J.W. wrote:cool. i didnt know that. what if my amp has 4V max inputs? for example, the AudioControl Three.1 has a 13V peak line driver, is that compatible with my amp? would that need to be adjusted or would i simply just turn my gains down? also, just curious, why closer to the HU?
You'll need a receptor down by the amp that will drop the voltage to the maximum input voltage. Putting too much voltage through the input of an amp only causes it to distort (same thing as turning the gain all the way up -well, if you double the voltage that is).

The higher the voltage the better. This is why those eletrical wires coming from power plants have INSANE amounts of voltage, but not that much amperage (large amounts of amperage or wattage will cause heat buildup in the wire which equates to power loss and inefficiency). They use their monster transformers in neighborhoods to reduce the voltage to your house's standard, but also increase either amperage or wattage as compesation.

Maybe I should change my major to electrical engineering...

by J.W. » Wed Apr 06, 2005 2:35 pm

Another factor in this is the output voltage from the EQ, that makes a world of a difference. If the output on those preouts is at a higher voltage than the head unit's output, put it as close to the head unit as possible (shortest RCA length).


cool. i didnt know that. what if my amp has 4V max inputs? for example, the AudioControl Three.1 has a 13V peak line driver, is that compatible with my amp? would that need to be adjusted or would i simply just turn my gains down? also, just curious, why closer to the HU?

by William from NOLA » Wed Apr 06, 2005 11:39 am

The higher the dB on the slope, the faster the frequency rolloff is, which turns to the speakers receiving as much the desired frequencies as possible. So in other words, the speakers will "cut off" faster which is a good thing.

You may find a slight difference, it really depends on your ears. Another factor in this is the output voltage from the EQ, that makes a world of a difference. If the output on those preouts is at a higher voltage than the head unit's output, put it as close to the head unit as possible (shortest RCA length).

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