Replacing HU and door speakers

bigaudiofanat · 12-08-2014, 07:30 PM

OP, you don't NEED an external amp, it is recommended for better performance from your speakers. However you are going to get better quality from your new speakers and head unit then with the stock system. It's basically to be had in steps and stages, options as well. However keep in mind dropping 300+ on a set of speakers and only running them off the 18-22 watts RMS of a head unit is basically chocking their performance.

RonRizz · 12-09-2014, 09:15 AM

Big basically summed up everything already discussed in this thread.
However, you will not be "choking up" the performance of your speakers by only feeding them 20 watts or so, as he put it. In essence, that statement says that your sound quality is degraded every time you lower the volume. That's just not the case.
I have heard people say things like "these speakers love power", or these speakers "come alive" with more power. Its all BS. the only thing they do with more power is get louder.
An amplifier does (or should do) one thing, and one thing only. Amplify. it does not color the sound in any way, shape or form. if I does, it is of poor design.
Conversely, speakers are meant to do one thing, and one thing only...Recreate the signals they receive. Some do this better than others, and that is why you can pay $10 for one, or $1000. Linearity also comes into play. To say a speaker sounds BETTER with more power is questionable, at best. To say it is LOUDER is a more accurate statement.
Your system is only as good as its weakest link.
Buy the best stuff you are comfortable paying for.

DeathByMunky · 12-09-2014, 12:01 PM

So how does this look?

HU: avic-5000nex (chose this because I really don't need the HD radio)

Speakers: Alpine SPR-60C

Amp: Precision Power P900.4 Phantom Series Class D 900 Watt 4-Channel Amplifier

Anything you would change or anything else I need?

bigaudiofanat · 12-09-2014, 01:03 PM

Quote:

Originally Posted by DeathByMunky

So how does this look?

HU: avic-5000nex (chose this because I really don't need the HD radio)

Speakers: Alpine SPR-60C

Amp: Precision Power P900.4 Phantom Series Class D 900 Watt 4-Channel Amplifier

Anything you would change or anything else I need?

If your going with an amp go with something a littler higher quality. Such as one of these.

MB Quart RA400.2 Reference Series 400W 2-Channel Amplifier

JBL GTO-504EZ 4-Channel GTO Series Class A/B Car Amplifier

Alpine KTP-445A (ktp445a) Plug and Play Head Unit Power Pack for

RonRizz · 12-09-2014, 01:49 PM

Given a choice of the 3, I'd go with the JBL.

RonRizz · 12-09-2014, 01:50 PM

Soundstream REF2.370 (ref2370) 300W, 2-Channel Reference Series also worth a good hard look.

DeathByMunky · 12-09-2014, 01:57 PM

So I keep seeing some of these amps at 2-channel compared to 4-channel.

What is the tradeoff of going with 2 instead of 4?

Once again, pardon my ignorance.

bigaudiofanat · 12-09-2014, 02:02 PM

Quote:

Originally Posted by DeathByMunky

So I keep seeing some of these amps at 2-channel compared to 4-channel.

What is the tradeoff of going with 2 instead of 4?

Once again, pardon my ignorance.

You can bridge a 4 channel amp into 2 channels and produce more power from them. Or a 2 channel just gives you 2 channels you can use for your speakers.

sageone · 02-09-2015, 07:55 AM

OP, what did you end up buying?

12-08-2014, 07:30 PM	#31 (permalink)
bigaudiofanat Car Audio Installer Join Date: Jun 2009 Location: Magnolia DE Posts: 8,342 Drives: 2012 Infiniti G37x Rep Power: 852	OP, you don't NEED an external amp, it is recommended for better performance from your speakers. However you are going to get better quality from your new speakers and head unit then with the stock system. It's basically to be had in steps and stages, options as well. However keep in mind dropping 300+ on a set of speakers and only running them off the 18-22 watts RMS of a head unit is basically chocking their performance. DeathByMunky likes this. __________________ Need help with car audio or electronics? Let me know!! Need Help Let Me Know Direct email address reimermatt@gmail.com Owner of: Dynamic Mobile Audio Follow me below https://www.facebook.com/Dynamicmobileaudio/ Last edited by bigaudiofanat; 12-08-2014 at 07:34 PM.

12-09-2014, 09:15 AM	#32 (permalink)
RonRizz A True Z Fanatic Join Date: Aug 2011 Location: Pine grove, Pa Posts: 2,132 Drives: 2 feet, 3 pedals Rep Power: 6774	Big basically summed up everything already discussed in this thread. However, you will not be "choking up" the performance of your speakers by only feeding them 20 watts or so, as he put it. In essence, that statement says that your sound quality is degraded every time you lower the volume. That's just not the case. I have heard people say things like "these speakers love power", or these speakers "come alive" with more power. Its all BS. the only thing they do with more power is get louder. An amplifier does (or should do) one thing, and one thing only. Amplify. it does not color the sound in any way, shape or form. if I does, it is of poor design. Conversely, speakers are meant to do one thing, and one thing only...Recreate the signals they receive. Some do this better than others, and that is why you can pay $10 for one, or $1000. Linearity also comes into play. To say a speaker sounds BETTER with more power is questionable, at best. To say it is LOUDER is a more accurate statement. Your system is only as good as its weakest link. Buy the best stuff you are comfortable paying for. __________________ P99rs Head Unit--- Amps- 2 Pioneer Prs800d --- Zapco ST1000MX---Zapco ST-4XSQ---- SI BM mk5 Subs---SI TM65v2 Midbass--- SI M3 mids--- SI M25 xbl2 tweeters ----- 2016 MECA street class 3rd place at world finals

12-09-2014, 01:49 PM	#35 (permalink)
RonRizz A True Z Fanatic Join Date: Aug 2011 Location: Pine grove, Pa Posts: 2,132 Drives: 2 feet, 3 pedals Rep Power: 6774	Given a choice of the 3, I'd go with the JBL. __________________ P99rs Head Unit--- Amps- 2 Pioneer Prs800d --- Zapco ST1000MX---Zapco ST-4XSQ---- SI BM mk5 Subs---SI TM65v2 Midbass--- SI M3 mids--- SI M25 xbl2 tweeters ----- 2016 MECA street class 3rd place at world finals

12-09-2014, 01:50 PM	#36 (permalink)
RonRizz A True Z Fanatic Join Date: Aug 2011 Location: Pine grove, Pa Posts: 2,132 Drives: 2 feet, 3 pedals Rep Power: 6774	Soundstream REF2.370 (ref2370) 300W, 2-Channel Reference Series also worth a good hard look. DeathByMunky likes this. __________________ P99rs Head Unit--- Amps- 2 Pioneer Prs800d --- Zapco ST1000MX---Zapco ST-4XSQ---- SI BM mk5 Subs---SI TM65v2 Midbass--- SI M3 mids--- SI M25 xbl2 tweeters ----- 2016 MECA street class 3rd place at world finals

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12-09-2014, 12:01 PM	#33 (permalink)
DeathByMunky Base Member Join Date: Jul 2014 Location: Alabama Posts: 11 Drives: '14 Nissan 370Z Rep Power: 10	So how does this look? HU: avic-5000nex (chose this because I really don't need the HD radio) Speakers: Alpine SPR-60C Amp: Precision Power P900.4 Phantom Series Class D 900 Watt 4-Channel Amplifier Anything you would change or anything else I need?

12-09-2014, 01:57 PM	#37 (permalink)
DeathByMunky Base Member Join Date: Jul 2014 Location: Alabama Posts: 11 Drives: '14 Nissan 370Z Rep Power: 10	So I keep seeing some of these amps at 2-channel compared to 4-channel. What is the tradeoff of going with 2 instead of 4? Once again, pardon my ignorance.

02-09-2015, 07:55 AM	#39 (permalink)
sageone Base Member Join Date: Jan 2015 Location: Charlotte, NC Posts: 15 Drives: 15 Nissan 370Z Sport Rep Power: 10	OP, what did you end up buying?