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  • Donating Members
  • Member For: 14y 2m 13d
  • Gender: Male
  • Location: Port Hedland

Hi Guys

As per the title, what is the benefit of line drivers? I understand they increase the signal voltage but with gain controls on amps why?

Im asking because on my stereo I have an alpine H/U with 4v pre outs and and alpine pdx m12 & f6 amps. The speaker amp is fine but the sub amp has a switch to change between 0-1v & 1-10v inputs and with it on 0-1v input it gets loud buts sounds sloppy and with it on the 1-10v input it sounds great but needs the gain set really high (above 3/4) as well as subs turned up fully on H/U and full bass boost on amp knob thingy-ma-bob (the remote mounted bass boost controller).

would a line driver make it safer to get the volume from the subs I'm after without clipping?

Or would it just make it start clipping at lower gain setting?

How do I tell if it is clipping and what is a good method of setting gains on sub amps?

Cheers

Chris

  • Donating Members
  • Member For: 14y 1m 24d
  • Gender: Male

The higher the input voltage going into the amps means you can lower the input frequency setting on your amplifier making it a lot less susceptible to interference. Also more voltage means more clarity :)

My line driver is also a equilizer which I mounted directly under the headunit. It has about a 9-10v preamp output voltage which is pretty decent. I've heard of 12 and 14 volt ones but that is serious money serious competition stuff.

  • Donating Members
  • Member For: 14y 1m 24d
  • Gender: Male

It will help with the clipping ever do slightly. It will be almost neglectable. If you want more frequency response your unfortunately going to have to get a better sub. I suggest tuning your amps so they don't try and go beyond what there voice coils are designed to. Last thing you want is a giant 12inch paperweight.

  • Donating Members
  • Member For: 14y 2m 13d
  • Gender: Male
  • Location: Port Hedland

Yeah my box is ported @ 32hz. I just set the filter at about 80hz and turn gain to a point where im confident its safe. Not turning it up too high is the main concern as the speakers love the power they're getting at the moment and I reckon they'll last forever how they're set. I just reckon I should be able to get the volume im getting without turning everything up to its limits, the amp puts out 1365wrms to 2 alpine type r subs which have a power rating of 500wrms each

  • Donating Members
  • Member For: 14y 1m 24d
  • Gender: Male

Yeah sounds like you got it set fairly good. Seeing as there getting lots of power I'd personally run input voltage to half. Set it o low pass filter. Set low level frequency to 32hz to suit the box then change your high level frequencies to suit your taste in bass. Ie:80hz if you prefere deep bass or 150-200hz if you like the higher stuff too. But don't exceed what the coils can produce, I learnt that the hard way.. Ohh another 50 hz shouldn't hurt.

Nek Minnit: giant paperweight

  • Donating Members
  • Member For: 14y 2m 13d
  • Gender: Male
  • Location: Port Hedland

Whats a good line driver setup? Is it worth going with a 6ch or is a 2ch "bass driver" better off ie: http://cgi.ebay.com.au/ws/eBayISAPI.dll?ViewItem&item=200550503500#ht_3157wt_1037

  • Donating Members
  • Member For: 14y 1m 24d
  • Gender: Male

Have a look at Earthquakes line drivers, they also double as a equilizer (more bass with no extra risk) and are extremely good value for money.

Heres how I set mine up :)

Excuse the gearstick and blurryness its the only photo I have.

post-45705-0-32839400-1335073857_thumb.j

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