[ Preamp Voltage ]
09-03-2002
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[ Preamp Voltage ]
All the head-units I see have different voltages for their preamp outputs, anywhere from 1-6volts.
I guess my question is, how much is enough, and what's the SQ at different voltages.
Also, don't some amplifiers have a maximum voltage input rating? I mean you wouldn't want to blow your amp for something other than thumping to loud.
I guess my question is, how much is enough, and what's the SQ at different voltages.
Also, don't some amplifiers have a maximum voltage input rating? I mean you wouldn't want to blow your amp for something other than thumping to loud.
09-03-2002
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Rep Power: 0 IMO, if you want good SQ, go with a headunit that has 4v or higher. The average headunit has about 2 volts, which seems to please please enough people. It all depends on how serious you are about your SQ. Now if you have a REALLY good amp and good cables to transfer the signal, then a 2volt preamp should be adequate.
09-03-2002
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Rep Power: 0 some eclipses have 8 volt outs... the higher the voltage, the lower the gain on your amps is... my HU puts out 4 volts, but the amp for my subs (piece of crap replacement till my new one) has a max of 2 volts for the input... my gain is at like 5%... i cant even turn it up 1/4 because i'll get nasty distortion, but no problems with blowing or anything... its been like that for some months
09-03-2002
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Rep Power: 0 Silverdevil said:
Then Silverdevil said:
Well, how things have changed since last night
To get back to the post, I would say 2V minimum but prefer 4V. The cleanest sound will come from the HU that do not have speaker outputs or an internal amplifier.
Quote
[hr]Can't you just daisy chain the amps? I split the RCAs at my High 2 Low converter and it sounds fine. I'm planing on keeping my stock HU so I used a converter and run it off the Rear Speakers. I like how it sounds[hr]
[hr]Can't you just daisy chain the amps? I split the RCAs at my High 2 Low converter and it sounds fine. I'm planing on keeping my stock HU so I used a converter and run it off the Rear Speakers. I like how it sounds[hr]
Quote
[hr]The HU I just bought today has 4V. It should be enough for me[hr]
[hr]The HU I just bought today has 4V. It should be enough for me[hr]
To get back to the post, I would say 2V minimum but prefer 4V. The cleanest sound will come from the HU that do not have speaker outputs or an internal amplifier.
09-05-2002
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Rep Power: 0 Line drivers, like Phoenix Gold's PLD1 usually help to clean up the signal by delivering a more powerful signal to the amplifier.
If I am wrong then sorry, but I thought the whole idea of the line driver was to help clean the signal up even more, and at the same time give it a nice boost of voltage for more power.
Mohawk, is that correct??
If I am wrong then sorry, but I thought the whole idea of the line driver was to help clean the signal up even more, and at the same time give it a nice boost of voltage for more power.
Mohawk, is that correct??
09-06-2002
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Rep Power: 0 both possibilities seem to have their logic... i've never dealt with one first hand, so i cant say i'm an expert, but your explanation makes sense, but also mine seems to make sense to me because the headunit is what it creating the signal, and a line driver is just adding more power to it, and with a car's unsteady power supply (fluctuation between 14.4 and 13 volts) would make me think that it would cause a lot of disturbance... dont take my word for it...
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