Preamp outputs
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Silver Member Username: RhasslerGilford, NH Post Number: 723 Registered: Dec-04 | Does it really make a difference if one head unit has a 2 volt vs a 4 volt preamp voltage? Im only askin cuz i want a flipscreen ~1000$ ish range, and the only one i can find with >2 volts is a kenwood one, which i dont know how i feel about lol. |
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Gold Member Username: OglejustPost Number: 1739 Registered: Aug-06 | well as long as u get your target voltage it shouldnt matter. besides u could always get a line driver. |
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Silver Member Username: RhasslerGilford, NH Post Number: 724 Registered: Dec-04 | what do you mean target voltage? and whats a line driver |
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Bronze Member Username: 350zsplDelray beach , Florida Usa Post Number: 17 Registered: May-07 | pioneer avhp5700dvd around $ 600 to $800 i think 3 volts out |
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Gold Member Username: OglejustPost Number: 1744 Registered: Aug-06 | the target voltage for ur amp... like how many volts it puts out to get the power its suppose to put out. and a line driver is a little box that bumps preout voltage up b4 it goes to the amp |
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Gold Member Username: Nd4spd18Southeast PA Post Number: 2797 Registered: Jul-06 | No point in using a line driver unless you're splitting the RCA signals for multiple amplifiers. The only difference between different preamp voltages is the noise floor....... if you turned the volume way up with no music playing you will hear a slight hiss, there will be less of that with a higher preamp voltage. |
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Silver Member Username: RhasslerGilford, NH Post Number: 725 Registered: Dec-04 | aight thanks MS |
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Gold Member Username: OglejustPost Number: 1751 Registered: Aug-06 | i dont fully agree w/ u m.s. i understand it helps a lot w/ running more than 1 amp but say ure target voltage is high and u cant get it out of the hu, u need a line driver. |
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Gold Member Username: Extrmndor3IF U HEAR ME... crazydbs.com Post Number: 5149 Registered: Feb-06 | DONT BUY THAT DVD PLAYER MAN... LOW END DVD PLAYERS ARE WEAK... GET A CALRION THATS IN THAT PRICE RANGE AND THOSE ARE ONLY 2 VOLT PREOUT VOLTAGE |
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Gold Member Username: InsearchofbassPost Number: 5207 Registered: Jun-04 | my bro has the pioneer 5700 dvd unit and it has 4 volts preouts |
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Gold Member Username: InsearchofbassPost Number: 5208 Registered: Jun-04 | if you use a line driver use the phoenix gold line driver....up to 8 volts rms and clean |
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Gold Member Username: Extrmndor3IF U HEAR ME... crazydbs.com Post Number: 5150 Registered: Feb-06 | WELL MY SEAN BROTHER I HAVE THAT 5700DVD AND I HAVE THE BOX RIGHT IN FRONT OF ME General Chassis Size Code IEJ RMS Power Output 22 watts Peak Output 50 watts RMS Power Bandwidth 50-15kHz Preamp Voltage 2.2 volts Monitor Size (diagonal) 6 1/2 Retractable Monitor Motorized Video Control Yes Preamp Outputs 3 pair Subwoofer Preamp Outputs Yes AUX Input Optional USB Input Optional A/V Inputs 1 Display Color Video display Key Button Color Green/Blue EQ Bands 3 Sound Shaping Type Easy EQ Wireless Remote No Wired Remote No Changer Control Yes Security Detachable face Parts Warranty 1 Year Labor Warranty 1 Year Tuner Tuner Type Supertuner IIID FM Sensitivity 8 dBf FM Presets 18 AM Presets 6 European Tuning No Seek/Scan Seek Radio Data System No Satellite Radio Ready Both CD CD Frequency Response N/A CD Signal-to-Noise 96 dB Anti-shock Memory None CD Text Yes CD-R Playback Yes CD-RW Playback Yes MP3 Playback Yes WMA Playback Yes http://www.crutchfield.com/S-Doa9RntBziM/cgi-bin/ProdView.asp?g=168550&tab=featu res_and_specs&i=130avhp570#Tab |
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Gold Member Username: InsearchofbassPost Number: 5209 Registered: Jun-04 | here's where I got my info......http://caraudiosecurity.com/shop/product/products_id/3513.html if it's wrong its their fault lol |
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Gold Member Username: InsearchofbassPost Number: 5210 Registered: Jun-04 | just looked in our book and found it 2.2 volts is right my bad |
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Gold Member Username: Extrmndor3IF U HEAR ME... crazydbs.com Post Number: 5151 Registered: Feb-06 | NO PROBLEM DUDE. ALSO THIS KIND OF MODEL GOT REPLACED BY THE 4500DVD SINCE IT HAD A DEFECTIVE OUTPUT CHANNEL THAT ALWAYS BLEW THE RCAS OUTPUTS.. I GOT 2 AND BOTH OF THEM DIE WITH THAT PROBLEM... AND IN THE SHOP THEY ARE GETTIN A FEW PROBLEMS WITH THE 4500DVD SO I GUESS THEY DID NOT DO SHYT TO FIX THEW PROBLEM OR THEY MADE ANOTHER ONE. |
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Gold Member Username: InsearchofbassPost Number: 5211 Registered: Jun-04 | well luckily my bro has had zero problems....by the way mess with the phase control we gained alot of bass for test tones |
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Gold Member Username: Extrmndor3IF U HEAR ME... crazydbs.com Post Number: 5153 Registered: Feb-06 | GOOD GOOD.. YEAH IF U HAVE GOOD GROUND AND THE RCAS HAVENT TOUCHED EACH OTHER YOULL BE FINE... THEY ARE WEAK THO BUT STILL MAKE SURE U GROUND IT CORRECTLY AND PUT TAPE ON THE RCAS TO MAKE SURE THEY WILL NEVER TOUCH EACH OTHER |
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Gold Member Username: InsearchofbassPost Number: 5212 Registered: Jun-04 | its under warranty so were good anyways but thanks for the tip |
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Gold Member Username: Nd4spd18Southeast PA Post Number: 2815 Registered: Jul-06 | " i dont fully agree w/ u m.s. i understand it helps a lot w/ running more than 1 amp but say ure target voltage is high and u cant get it out of the hu, u need a line driver. " What "target voltage" are you talking about? I will assume you mean the AC voltage that you calculate should be on the speaker outputs when setting the amplifier gain? Is so, you're talking about an impossible scenario. Almost every HU I've seen has at least 2 volt preamp outputs, and every amplifier I've seen can accept at LEAST 2 volt inputs. No way for there to be a problem there. |
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Gold Member Username: Nd4spd18Southeast PA Post Number: 2816 Registered: Jul-06 | didn't bump |
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Gold Member Username: OglejustPost Number: 1754 Registered: Aug-06 | yeah like say ure target voltage is 70 volts... w/ 2 volt preouts it might be hard to get that. |
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Gold Member Username: Safe_crackerChicago, IL US Post Number: 2911 Registered: Jan-06 | If it is from a quality unit producing a clean signal (look for a high signal/noise ratio) then you shouldn't have any problems with a line driver. Now if you buy an inferior HU that uses crappy components and produces a crappy signal when you amplify it with a linedriver you get an even crappier signal. Do yourself a favor, start with a clean signal, it could possibly make a crappy amp or sub combo sound halfway decent... JMHO..Polo.  |
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Silver Member Username: RhasslerGilford, NH Post Number: 726 Registered: Dec-04 | hmmm, well i found the pioneer AVH-P5900DVD, thats got 4 volt preouts, and is like 7 hundo. Might have to get this |
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Gold Member Username: Nd4spd18Southeast PA Post Number: 2820 Registered: Jul-06 | " yeah like say ure target voltage is 70 volts... w/ 2 volt preouts it might be hard to get that. " No offense man, but thats completely wrong. Every amplifier I've ever seen can have the gain sensitivity adjusted down to far less than 1 volt, most go down to 0.5 or 0.2 or somewhere around there. There is no way for there to be a problem with a 2 volt input signal. If you were get a situation where you turned the gain all the way to 0.2 or whatever it goes up to, and you still weren't getting the correct voltage on the speaker terminals(calculated based on your 2 volt input signal), then something else is wrong. Could be LPF set too low, wrong test tone freq being used, failure to turn off loudness, bass boost, EQ, other HU settings, sub level (if the HU has it) not turned all the up, etc. |
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