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Amps : Will it make a difference?

Old 01-16-2004, 09:57 AM
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Hello all, it's good to be back. The past few months have been unresourceful (i.e.: no cash) so i've tried to keep away from the forums and car audio (audio maniac + compulsive buyer = very hard on the wallet). But, christmas has been good to me so here I am.

I'm looking into buying an amp for my front channel. I visited thezeb.com and found a pretty good deal on some visonik amps. I already have a V900xd pushing my subs, all of which I bought used on CCA. I'm very satisfied with the visonik so I thought I'd get the V2408. But then I saw heavyhopper's sale. Now, the Visonik has a 20hz - 20Khz freq response and can take up to 8V preouts, whereas the JBL has a 10hz - 30Khz freq response but can only take up to 4V. Here are my questions:

1) Will the difference in frequency response make a (audible) difference? Most decks only play up to 20Khz anyway...

2) If I ever upgrade to a higher-end deck with say 5 or 8V preouts, will I be **cked with the JBL?

BTW, nevermind the power ratings, it's just for the principle.


Steven
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Old 01-16-2004, 10:40 AM
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In terms of SQ, you won't notice any difference between the two amplifiers. In terms of the input voltage, a higher or lower ceiling won't mean much. The gains must be properly be adjusted regardless of the deck.
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Old 01-16-2004, 11:55 AM
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So what you're saying is that even though an amp will take only up to 4V (i.e. the JBL amp) I can still plug a high voltage deck (say, a high-end 8V eclipse). Then please explain why they put this voltage range? Is it just a way to say "this amp is optimized for this range"?

I'm still confused. Can we get another opinion in here?


Steven

[ January 16, 2004, 01:00 PM: Message edited by: Audio Freak ]
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Old 01-16-2004, 12:51 PM
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No offence intended to you guys, but no two amplifiers sound alike, thus sq will be different between the two of them. Buy the amp that will do the job best for you at the price you want to pay, I'm sure the "sale" you found is a good one from a very reputable person, this I know for sure.
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Old 01-16-2004, 12:59 PM
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2nd part of the question, just because the speed limit is 100kmh does not mean that your car can go no faster (always abey the speed limit). What can happen if you have a cd player that has a voltage higher than the recommended input of the amp is fairly simple to understand. The amplifier can be driven to it's full output much sooner, thus very carefull attention to how the system is tuned. Keep the gain as low as possible, do not use a bass boost, pay close attention to your volume control, if you have an Eclipse 8v cd player, with an amp that can accept say an 8v input, for arguements sake here, the deck can be driven to full output without causing the amp to clip. But with a 4volt input on the amp, the amp may be driven to clipping at 1/2 volume to 60% output of the Eclipse volume dial. It means that you need to learn where the clipping point of your amp is with the type of music you are playing. Most amplifiers also will take more than they state for an input voltage, power does not magically stop at a 4volt input.
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Old 01-16-2004, 02:41 PM
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Originally posted by Dukk:
</font><blockquote>quote:</font><hr />Originally posted by MR2NR:
No offence intended to you guys, but no two amplifiers sound alike, thus sq will be different between the two of them.
Prove it. No one else has been able to so far. [img]graemlins/dunno.gif[/img] </font>[/QUOTE]Yea, I've never heard a difference between amps before. It's true different amps have different charteristics in the way they drive a speaker but do you really hear a difference? If you compared an Xtant to a Kicker using the same source unit and speakers, you think you would hear a difference? I think not. And if you hear 2 cars with exactly the same equipment but different amps and they sound different, your hearing the difference in install, not the amps.
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Old 01-16-2004, 03:09 PM
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agreed on your second point Dukk,but for the first, I and various customers can hear a difference in sq between amps. Take any system and swap the amps out say a Diamond for a Kenwood or a Pioneer for a Audison or a Pyramid for an Alpine. Yes you will hear a difference or are you leading us to believe that since all amps sound the same we should all just use one brand? No offence either Dukk, just curious as to why you believe that you won't hear a difference.
Now just because you may not hear a difference does not mean the vast majority of others may or may not hear a difference, I happen to be one that can hear a difference and I'm sure there are others. Maybe I know what to listen for and then ask the customer to listen for the same. While you may view this as leading a customer, nonetheless if they hear a difference, it is their opinion if it sounds better or worse. Does a Parasound home amp sound like a Pioneer, even with the same speakers, the same power rating, the same source and same source material, no definitely not.
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Old 01-16-2004, 04:12 PM
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Like I've said before the diffrence in sound you are hearing between 2 amps is the amount of power its putting out not some special magic dust inside the amp that makes it sound better.. The only thing that could affect the sound would be if your using internal crossovers.
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