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Unread 01-02-2013, 12:50 PM   #1
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Default New AMP needed for 4 x Internal's

Had a nice Amp for my Polk DB 650's, 6x9's in back and 6 1/2 in front.

the poor thing recently died and Im pretty much broke.

But Im desperate to get Music and radio back into my car.


Can anyone give me good options? Links to items to purchase?

Or possibly tips and tricks on how to Fix or atleast co0nfirm that the amp itself is dead and not just a cable etc?

Let me know

Speaker and Amp Info

2 Polk DB650 6 1/2

•polymer/mica composite woofer with butyl rubber surround
•liquid-cooled, silk/polymer composite 3/4" dome tweeter
•certified for marine use
•2-way crossover network
•recommended power range: 6-60 watts RMS
•peak power handling: 180 watts
•frequency response: 40-22,000 Hz
•sensitivity: 92 dB



and


2 x Polk DB690 6x9's

•3-way 6"x9" speakers (pair)
•polymer/mica composite woofer with butyl rubber surround
•1" silk/polymer composite midrange driver and 3/4" liquid-cooled, silk/polymer composite dome tweeter
•certified for marine use
•2-way crossover network
•recommended power range: 10-100 watts RMS
•peak power handling: 300 watts
•frequency response: 35-22,000 Hz
•sensitivity: 93 dB


AMP info

Infinity Reference 7540a
•4-channel car amplifier
•111 watts RMS x 4 at 4 ohms (139 watts RMS x 4 at 2 ohms)
•278 watts RMS x 2 at 4 ohms in bridged mode (4-ohm stable in bridged mode)
•2-, 3-, or 4-channel output
•variable high-/low-pass filters (32-320 Hz, 12 dB/octave)
•variable Bass EQ (0-12 dB @ 50 Hz)
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Unread 01-03-2013, 02:56 PM   #2
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Anyone?

Im completely lost =(
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Unread 01-03-2013, 03:35 PM   #3
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Quote:
Originally Posted by StormX2 View Post
Anyone?

Im completely lost =(

It takes a while for a reply some times, a lot of us work. plus there's we don't have many audiophiles (only one or two)

PBasil is your guy though...
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Unread 01-09-2013, 10:50 AM   #4
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you just gave me the ultimate noob answer lol

but thank you for pointing out PBasil

and yes I know this site blows cus Ive been randomly viewing it as long as you have
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Unread 01-09-2013, 11:31 AM   #5
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and yes I know this site blows cus Ive been randomly viewing it as long as you have
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Unread 01-09-2013, 06:09 PM   #6
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Sorry to hear that our site blows...

But to answer your questions(s), you were kinda vague. There are thousands of 4ch amps out there. Which one is right for you is something you have to narrow down by what features you want. Most people arent audiophiles, which narrows things down alot, most people go for the cheaper stuff, so if thats your case, i would only recommend sticking with the bigger brand names you know of. Kicker, JBL, JL, Rockford...etc

As for diagnosing the amp, what does it do when you try and play music? Does the power light come on? Does it play then suddenly shut off? Popping noise? There are alot of variables... We need input.
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Unread 01-10-2013, 12:04 AM   #7
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Originally Posted by StormX2 View Post
and yes I know this site blows cus Ive been randomly viewing it as long as you have
Well, the site doesn't blow. the site is fine. We just need more members. there aren't a lot of active members here, because a lot of people go to model specific forums. I'm also a member of swedespeed.
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Unread 01-10-2013, 01:33 PM   #8
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sorry if that offended anyone, My sarcastic jokeing nature hardly translates well through Forums.

Deffinitely am not an Audiophile per say but I like quality an high Volume.

as mentioned I run only the internals

2 Polk DB650 6 1/2

•polymer/mica composite woofer with butyl rubber surround
•liquid-cooled, silk/polymer composite 3/4" dome tweeter
•certified for marine use
•2-way crossover network
•recommended power range: 6-60 watts RMS
•peak power handling: 180 watts
•frequency response: 40-22,000 Hz
•sensitivity: 92 dB



and


2 x Polk DB690 6x9's

•3-way 6"x9" speakers (pair)
•polymer/mica composite woofer with butyl rubber surround
•1" silk/polymer composite midrange driver and 3/4" liquid-cooled, silk/polymer composite dome tweeter
•certified for marine use
•2-way crossover network
•recommended power range: 10-100 watts RMS
•peak power handling: 300 watts
•frequency response: 35-22,000 Hz
•sensitivity: 93 dB


AMP info

Infinity Reference 7540a
•4-channel car amplifier
•111 watts RMS x 4 at 4 ohms (139 watts RMS x 4 at 2 ohms)
•278 watts RMS x 2 at 4 ohms in bridged mode (4-ohm stable in bridged mode)
•2-, 3-, or 4-channel output
•variable high-/low-pass filters (32-320 Hz, 12 dB/octave)
•variable Bass EQ (0-12 dB @ 50 Hz)



Unfortunatley I know very little about it all. The AMP just does not appear to power up anymore, Head Unit seems to run just fine, however I have removed the face plate for a while,

its a Pioneer, very old, the last of the Full Color Animated Screens with Motorized Faceplate. Worked very well before the amp died, other than the fact the the motor doesnt work very well lol,open JUST enough to let the CD out

Basically Im looking for a proper replacement of the Infinity, it all sounded really great together and Id like ot have that quality back =-)


Also, I have checked, Fuses are all good still.
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Unread 01-12-2013, 05:23 PM   #9
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If the amp isnt functioning at all, i would blame that first. If it wont even power on even after you have checked the fuses, the only other thing to try is bridge the remote wire and +12v at the amp to see if it turns on. Likely it wont, but still worth a quick check.

If you were happy with you Infinity, then i would consider some of these...
You dont have to buy from here, just showing you some options.

WoofersEtc.com - ZRS-C9 - Cadence 1000 Watt 4 Channel Competition Amplifier

WoofersEtc.com - S580.4 - Precision Power 580W Sedona Series 4 Channel Amplifier

WoofersEtc.com - GTA-504 - Boston Acoustics 4 Channel 320W GTA Series Amplifier

WoofersEtc.com - XT800.4 - US Amps 4-Channel High Power Premium Class A/B Xterminator Series Amplifier
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Unread 01-14-2013, 09:25 AM   #10
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would the ones with the 50 x 4 RMS be too little power?

Im actually looking for a way to cut costs as much as I can without losing too much quality.

Amp has been dead for over 3 years now and Have not had the extra cash to gert a new one. =/

that first one, the Cadence one looks real nice
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