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kylej

2v Preamp vs 4v Preamp

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My head unit (Alpine CDA-105) only has a 2v preamp output for some reason. Alpine cheaped out there I suppose. Does the 4v really make that much difference in quality?

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its definately a difference, i like running at least 5v preouts personally.


Headunit - Kenwood DDX 318 4v double din

Front Stage - JL Audio c2 6.5 comp set

Rear Stage - Jl Audio VR 6" comp set

Front stage amp - OS Sony (.005 THD Rated)

Sub Stage - 2 10" IDs 1cu sealed per

Sub Stage Amp - Boston Acoustic GT-28

Big 3, SVR800 Batt, JL Blue Line Rca's, 0 ga JL kit

Refs - The_Grimy_One, Deusle, zach90z, shineman08, Orion 2500D

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its definately a difference, i like running at least 5v preouts personally.

 

eclipse ftw brotha.

 

 

"Don't worry about the pre-out voltage, and simply set the gains correctly for the amplifier on hand.

 

The more important spec on pre-out (IMO) is the output impedance - the lower the better. The output impedance is more important because it determines how much noise rejection the output devices are capable of maintaining (rather than noise masking, as a higher RCA voltage does).

 

The Pioneer head units (typically) offer neither high voltage OR low impedance outputs, this in addition to the noisy and relatively poorly designed ground plane within the units, makes them very susceptible to noise right off the bat. Proper HU grounding is VERY important with Pioneer heads. If really THAT worried about it, get a different (i.e. better) head unit."

 

RCA output voltage, nouseforaname


08' VW GTI

 

 

jesus christ nukka, just smoke some pot and pretend it is the correct album.

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higher voltage is usually better but just make sure whatever voltage you go with, your amp has at least a minimum of that

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all higher voltage outputs do is change how low the amp gain is going to be set to as compared to a lower voltage output.


FI BTL 18" Fully Loaded

6cuFT box after all displacements( spl box 4.79 after displ.)

Planet Audio BB2400.1

2 runs of 1/0 Gauge Wire

Kinetic HC800

Crappy Pioneer HU

doing 162db in port, 147db in kickpanel

Fat_girl_tasered.gif?

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I can tell ya a 2v Denon has better sq than an 8v eclipse.


References:

kmarei, ge_off_me, AudioPipe, slim2fattycake, Louisiana_CRX, ARMed&Bangin, EXTREMECHEVYMAN, Dpc69ss, Psychoacoustics, Shinju, jonny101abc, snoopdan

 

BUYING SILVER TOP TRF MOTORS

 

 

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My head unit (Alpine CDA-105) only has a 2v preamp output for some reason. Alpine cheaped out there I suppose.

 

Your CDA-105 is entry level from Alpine. That's what you get from any Tier 1 manufacturer's low end models. 2V outputs are not as important as having enough pre-outs for your system. If the 105 does what you need then you're fine.


@BarrySchanz on social

Founder and CEO of Barry Schanz Enterprises, LLC

dba Rubyserv

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