Preamplifier woes

Hey man mine is the exception! //content.invisioncic.com/y282845/emoticons/wink.gif.608e3ea05f1a9f98611af0861652f8fb.gif So is the Classe.... Plus I'm just giving you a hard time I don't think it's that UGLY!!!

 
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It looks pretty normal to me //content.invisioncic.com/y282845/emoticons/crap.gif.7f4dd41e3e9b23fbd170a1ee6f65cecc.gif

My Classe pre is plain jane lookin' but I don't care how she looks //content.invisioncic.com/y282845/emoticons/wink.gif.608e3ea05f1a9f98611af0861652f8fb.gif

 
I'm not really sure of your install and your needs, but if I were to buy a preamp,

I would seek a higher voltage preout design with balanced outputs, and

obvisously, low noise.... but is your amp able to cope with the higher voltage

preouts?

That's why I don't admire home audio amps very much in the sense

that they don't have gain controls and lack signal processing, features you can

use to optimize performance. If you really think about it, home audio has

been stuck in the dark ages vs. car and pro audio. People use high voltage

preouts in car and pro audio, but not common in home audio. People adjust

amp gain for best noise performance, but not in home audio. People take

advantage of signal processing more in car and pro audio, less in home audio.

The list goes on and on. What about balanced preamp signals? This is standard

in proaudio {you don't pay extra for it}, but in car and home audio it's a premium

item... All these things they do in proaudio and don't charge extra, are big

$$$ items elsewhere in spite that it's so easy and cheap to implement.

Too much audio comedy everywhere. If you wanted just a preamp, a signal booster

with volume knob, a simple DIY project can be made. You can make it balanced

with high voltage output with very little thinking about it.

 
Home audio preouts are 1v typical.
Here's a typical piece of gear.

http://www.rotel.com/products/specs/rc1070.htm

1V preout, 100 ohms.

Something not typical.

http://www.parasound.com/halo/p3.php

1. Balanced XLR and unbalanced RCA outputs

2. Maximum Output : > 8 V before clipping

Given the two choices, the winner is easily seen.
It's a different gain structure... Simple... You DON'T NEED HIGH VOLTAGE PRE-OUTS!!! That is a car audio/pro-audio myth... What is so hard to understand about Low-Drive = Efficiency = Clarity!!! Less voltage = less distortion, less voltage = less crosstalk, smaller components = faster components, faster components = more accurate ones. Pro-audio uses XLR and Higher Voltages for a simple reason distance. In a home audio setup most of your cables are going to be 3-4 feet max vs. a 50ft XLR cable which is sending ultra low voltage microphone signals. Also, the use of the XLR and higher voltage eliminates the antenna effect any long cable creates. If you are seriously running more than 1Volt in your home audio setup you have got a problem somewhere. I always learned from just about every person who has had any success in building PA systems signal flow is one of the most important things. So, that also flows into home audio, reason home audio amps don’t have knobs. Yes given a lot of high end gear has higher voltage pre-outs, any one guess why???? ANYONE??? ANYONE??? Some higher end low gain amps need that extra boost on the input. BUT, I can promise that you don't need it. And remember this, if you input is 750 mV and you will reach your maximum gain on the pre-amp before you will reach 4 or 8 volts. Beat, do you run you stuff at 0 db??? Or wide open???? I hope not. By the way, specs don’t always mean it’s the holy grail either. //content.invisioncic.com/y282845/emoticons/wink.gif.608e3ea05f1a9f98611af0861652f8fb.gif

That's because Rotel is for n00bs. //content.invisioncic.com/y282845/emoticons/fyi.gif.9f1f679348da7204ce960cfc74bca8e0.gif
Rotel is for n00bs??? Rotel IS NOT for n00bs!!! I'll put any Rotel equipment up against just about anything else. Why don't you pull you head out of your ***? I maybe conceded and a jerk sometimes but people who listen to my stuff don't disagree with me after they listen. I've only been doing this shit my ENTIRE life. I think I might know a little about what I’m talking about. Bigger is usually never the answer...

 
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JimJ

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