posted
Well, I'm considering buying a pro line driver. Does anyone else have one?? From what I've seen, they seem to be a very capable processor, but I'd like to hear from some people that have some experience from them. All opinions would be apprciated! Thanks!
Shane
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Posts: 6 | From: Mt Pleasant, MI 48858 | Registered: Nov 1999
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posted
with duck on here how am I supposed to make a living??????? hehe but he's right.. if your only runing a couple amps and you have a good quality deck with low output impedance your probably gonna be ok.. if your running lots of amps and/or have a wimpy deck like older pioneer/sony etc.. even some of the newer aren't the best. best bet is to try one in your car.. or.. find someone with a similar setup to you (same amp/head) and ask if they have one if it made a big diff..
------------------ Digital Designs 9515 Mmats d300hc (2) (soon) Pioneer source MB Quart fronts ADS power plate RW Audio processors
Posts: 739 | From: Calgary AB | Registered: Oct 1999
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quote:Originally posted by SQstang00: we'll you just cant go wrong with a line driver from P.G...
Unless it's not needed, then any line driver is a total waste of money. >2V <200 ohm outs=just fine for most, unless lots of amps are being run. And I mean lots!
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STILL waiting to hear a GOOD pair of HLCD's!!
Use your ears to judge components, NOT your wallet! K.I.S.S.
posted
well I can sorda agree with the others but Ok several things One It depends on the input acceptace of the amps like us amps for example can takes High voltageimput
2 Also The line driver can help out with distorioncleaning it and has a light that comes on wich warns of a dirty signal If I ubder stand this right the more input you have to your amp the less your amps work ?Isnt that correct? Im putting like 1o to 14 volts to 2 usa 400s for a total of 20 to 28 VOLTS! The advantage is My gains are on zero Im still getting lots of power out of my amps with lotts less current draw. This isnt good for every amp thuogh It works for my setup and maybe not yours .But in the long run It can still be used whether to boost the signal or clean it up. also my system consists of a pio deh p835r Awesome deck sub out put to my PG BassCube to my Line driver then to my 2 400s
posted
Actually, the more signal you have to your amp, the easier it is to drive it into clipping. I think the pld has that led that tells you ONLY when it's inputs are being overloaded. I would seriously doubt they could build something to detect "dirty" signals, other than from sine waves. It's much easier to build an led to flash overload instead. The amplifier works hard no matter what it's input level is, it's a function of the load it's connected to. Line drivers only help to reduce s/n and allow you to run the output to several amplifiers without signal degradation.
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STILL waiting to hear a GOOD pair of HLCD's!!
Use your ears to judge components, NOT your wallet! K.I.S.S.
posted
That little red LED on the PLD-1 is pretty much useless it's just a voltage comparitor... when the output signal voltage reaches 6 or 7.something volts (I don't remember) it turns on, if you hook one up on an o-scope and test.. you'll see the clipping led comes on long before the signal is ever clipped, I've seen most components are like that, a friend has an AC EQX I believe, with clipping light and I set his gains with the o-scope and with them set perfectly at high volume that light is ALWAYS on but it's not clipping yet and sounds amazing and is louder than when he set it all up using the clipping light as a reference so it never came on. In my oppinion it's pretty bogus and misleading.
and BOBEJUICE, your amp is gonna draw the same amount of current at a given power output regardless if you have the gain maxed and 1V in or it on min with 10V in...
but the actual benifits of a line driver vary depending on the system, if say you have an alpine 4V deck going to alpine amps, you might not get much of a difference adding a line driver, alpine designed them to work together, if say you have an older pioneer 0.5V out and are running a PG amp well your gonna see a night and day difference, there are many many examples of each, you just have to use what fits YOUR application.
There's also the matter of amplifier input impedance, most people overlook this, most amps are high enought that they don't put much of a load on a line driver/head unit, ADS for example the input impedance is 47k ohms which is typical and high, an easy load for what's infront, but look at the current line of Adcom, input impedance of 8.5K, my line driver (RW Audio) will drive a 650 ohm load without problems, but you don't get the same voltage out, 1k is about as low as you can go without performance decreases you could run 47 ADS amps off my line driver giving it a load of 1k ohm which it would drive no problem with the adcom on the other hand you could only run 8, granted almost nobody runs anywhere near 8 amps let alone 47 but if you tried the same load with a head unit with 1k output impedance to the 1k load half the signal would be dropped over the load and the other half over the output impedance, so you might get 1V out of that 2V deck assuming it has the current capabliities to drive the load (yes the currents are very small but the head may not have been designed for it)
------------------ Digital Designs 9515 Mmats d300hc (2) (soon) Pioneer source MB Quart fronts ADS power plate RW Audio processors http://www.geocities.com/motorcity/6128 Member of Team Hertz Canada
[This message has been edited by RWAudio (edited 04-06-2000).]
Posts: 739 | From: Calgary AB | Registered: Oct 1999
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posted
Not to argue with you guys .Some of you probably know more than I do but I have tested my battery voltage with my gains on 0 and then turned up. My voltage dropped more with them turned up Hence the more voltage (I) put to my amps the less my gains need to be turned up. I did this in my own car. and I said that every systenm is differentand it might not work with his Second ther is no clipping from my system at all head line and basscube can be wide open and come nowhere close to clipping. Like I said USamps is made to take high imput voltage/ V/s others that may only go up to 2 or 5 As far as the light that is what I was told by the dealer who sold it to me . I was told that when setting the line driver Turn it up to right before the light turns on . That the light comes on when the signal becomes distorted.If thats wrong im sorry. Also I feel im right in saying the pld1 can and will help clean the signal depending on application thank guys
posted
I agree with the line driver helping in most situations... when you have the gains turned all the way down you might not be driving the amp to full power, and that might be the cause of your difference in current/voltage another reason could be if you started with the zero gain.. then full.. your battery voltage may have dropped (even if the car is running you may see a drop after time)
As for your gains where you said: "Second ther is no clipping from my system at all head line and basscube can be wide open and come nowhere close to clipping." what kind of head unit do you have?? alot of decks don't have the voltage to drive a PLD to full output even with the gain cranked it has a gain of 8 times at max..(min is a gain of 1 I believe) so if you put in 1V you get the max 8 out.. but if you put in 0.5 you can only get 4 out even with the gain cranked, in that situation you'll never clip the pld or bass cube, as long as you have the amp set to reach full power with the voltage you have (that's why they put a gain on amps) hope that helps
------------------ Digital Designs 9515 Mmats d300hc (2) (soon) Pioneer source MB Quart fronts ADS power plate RW Audio processors http://www.geocities.com/motorcity/6128 Member of Team Hertz Canada
[This message has been edited by RWAudio (edited 04-06-2000).]
Posts: 739 | From: Calgary AB | Registered: Oct 1999
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