Boat audio system

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skydiveD30571

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Re: Boat audio system

They are the same amp and same output. Sonic lists the max output below the model number, then lists the RMS output down in the specs section. The amazon website skips the max output rating. Always go by RMS power, max output is worthless.
 
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SuperMiguel

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Re: Boat audio system

skydiveD30571 said:
They are the same amp and same output. Sonic lists the max output below the model number, then lists the RMS output down in the specs section. The amazon website skips the max output rating. Always go by RMS power, max output is worthless.
Click to expand...

Gotcha, now i know this is only $50 more (amazon) than the JBL i picked before, and i think just having the extra channels is worth it the $50, just in case i want to add a sub, or 2 more speakers...

But quality wise comparing the sound using the JBL and this one only 4 channels, they sound the same? they are built equally? same marine coding and everything?

Kinda want to make sure i dont get something lower quality just because the 2 extra channels (which i probably wont use)

Also if i end up getting this amp and a sub, should i get a different set of speakers?? also i usually list to music outside of the boat, about 20 feet from it.. So i read only that components speakers wont do me any good for this reason
 
Tail_Gunner

Tail_Gunner

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Re: Boat audio system

To the OP unless you are going to spend more than 500 i would not include a power amp into your system. There will be little difference between a small cheap power amp and a good head unit. Spend your money on a very efffecient speaker system and call it a day

1.http://compare.ebay.com/like/180957213412?var=lv&ltyp=AllFixedPriceItemTypes&var=sbar
2.http://www.amazon.com/Infinity-Reference-612m-High-Performance-Loudspeaker/dp/B00292XT2I

http://www.caraudiogiants.com/infinity-reference-6032cf.html?___store=default&___store=default The big M word is missing and a little glitz

If your must but you will need a 60plus amp altenator and that amp will Hit It as they say today..


3. http://www.hookedontronics.com/show_product_details.jsp?cid=57679&c=1209Froogle&b=Jbl_GTO1004
 
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SuperMiguel

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Re: Boat audio system

Tail_Gunner said:
To the OP unless you are going to spend more than 500 i would not include a power amp into your system. There will be little difference between a small cheap power amp and a good head unit. Spend your money on a very efffecient speaker system and call it a day

1.http://compare.ebay.com/like/180957213412?var=lv<yp=AllFixedPriceItemTypes&var=sbar
2.http://www.amazon.com/Infinity-Reference-612m-High-Performance-Loudspeaker/dp/B00292XT2I

If your must but you will need a 60plus amp altenator


3. http://www.hookedontronics.com/show_product_details.jsp?cid=57679&c=1209Froogle&b=Jbl_GTO1004
Click to expand...

So that HU does 23 wattsx4 RMS? so by getting an AMP im getting more than double the sound?

why wouldnt it make sense?
 
Tail_Gunner

Tail_Gunner

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Re: Boat audio system

:DGood point i said if you must remeber. Now with that said it will double the sound level if you baffle your speaker's correctly.."baffle" placing them in a air tight enclosure if not that amp will push any unbaffled spkr to hard. AKA pop pop pop..Im sure you have heard that before

I did some research on how they rate head units these day's and find it very vauge. For instance they do not rate the power across the band..20hz to 20khz.. Its very easy to make power say at 10000 khz. It's a age old game,,notice they do not give the power type..a/b mosfet..class d what ever. It is a good head unit..its on closeout Sony shot way to high in prodution..I have them both...you will turn heads from 100 yards away if you need to do that.

Ill be blunt there is not enough room in any head unit to equip it with a full range 20 watt rms amp... The power supply alone would be huge.But they all play the game..:D
 
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SuperMiguel

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Re: Boat audio system

Tail_Gunner said:
:DGood point i said if you must remeber. Now with that said it will double the sound level if you baffle your speaker's correctly.."baffle" placing them in a air tight enclosure if not that amp will push any unbaffled spkr to hard. AKA pop pop pop..Im sure you have heard that before

I did some research on how they rate head units these day's and find it very vauge. For instance they do not rate the power across the band..20hz to 20khz.. Its very easy to make power say at 10000 khz. It's a age old game,,notice they do not give the power type..a/b mosfet..class d what ever. It is a good head unit..its on closeout Sony shot way to high in prodution..I have them both...you will turn heads from 100 yards away if you need to do that.

Ill be blunt there is not enough room in any head unit to equip it with a full range 20 watt rms amp... The power supply alone would be huge.But they all play the game..:D
Click to expand...

Gotcha, well i rather be overlound than under and have to go back again and install an amp.. So you think im better off getting that sony HU (if so why, look below), with the MB Quart NAU 660, 4 6.5 Speakers and 1 sub...

So i did notice that the sony Preamp Voltage is 2V compared with the kenwood (KMR-550U) 2.5V, kenwood has 6 channels output, Sony one has 4, Kenwood has Sub Preamp Outputs sony doesnt
 
Tail_Gunner

Tail_Gunner

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Re: Boat audio system

The sony is a hardened unit (durable) the two volt output is plenty enough for the JBL amp..the Kenwood is not in the same league. Post what overall system your thinking....Sub's were not in th picture but the system i posted can adapt quite nicely...remeber your 500 budget.

MB quart are no longer what they used to be... Infinity's are very loud smooth durable..just a tad bright but your on a boat not in a recording studio..There a tough act to follow.
 
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SuperMiguel

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Re: Boat audio system

Tail_Gunner said:
The sony is a hardened unit (durable) the two volt output is plenty enough for the JBL amp..the Kenwood is not in the same league. Post what overall system your thinking....Sub's were not in th picture but the system i posted can adapt quite nicely...remeber your 500 budget.

MB quart are no longer what they used to be... Infinity's are very loud smooth durable..just a tad bright but your on a boat not in a recording studio..There a tough act to follow.
Click to expand...

This is what i think so far:

HU: Kenwood KMR-550U or the Sony you linked (working on deciding)
Amp: MB Quart Marine NAU660 (or the JBL one, but i dont think ill be able to run the sub then)
Speakers: JBL Marine MS6200 (2 pairs) (4 total) Still not sure on this
Sub: MB Quart NLP254S (NO IDEA ON THIS, just picked one around my price)

Prices:
HU: $129 or $138
Amp: $155
Speakers: $73 each pair, $146 all 4
Sub: $70

Total: ~$500

Now i dont even know if i want a sub.. Since last time i putted a sub in my car it was horrible to listen to music to much boom! but then again 2 12" on a civic coupe does that =) but i do hear boats/cars with a sub, and it just sounds to loud, to much base to anoying.. So if i dont get the Sub, i could go with the lower price amp (JBL) and get better speakers... not sure here
 
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pyrotek

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Re: Boat audio system

I think the least important is the head unit. Biggest thing with a head unit, imo, is if it has a level control for the external RCA outputs. Mine doesn't, and I wish I didn't get it. But it was the cheapeast most generic.

Most important aspect to any system is the speakers. Unfortunetly there are no specs that they can list to indicate how well it sounds. Some give frequency response, phase, etc, but its essentially meaningless. Unfortunetly, best bet is to rely on recomendations.

I tried a fairly cheap pair of Kicker speakers (~$100) and was very dissapointed with them. The stock Clarions sounded slightly better. Recently heard some JL Audio that were absolutely amazing, but at ~$450 they are too much.

I have some very expensive home audio speakers, but I'm not willing to spend the same amount for sound on the boat.
 
Tail_Gunner

Tail_Gunner

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Re: Boat audio system

http://www.sonicelectronix.com/item_17760_MB-Quart-NAU-660.html
•RMS Power Rating:
◦4 ohms: 60 watts x 6 chan.
◦2 ohms: 90 watts x 6 chan.
◦Bridged, 4 ohms: 180 watts x 3 chan

http://www.sonicelectronix.com/item_12244_JBL-GTO1004.html

RMS Power @ 4 ohms

100 watts x 4 channels



RMS Power @ 2 ohms

150 watts x 4 channels



Bridged RMS Power

300 watts x 2 channels


Total RMS Power Output

600 watts

The jbl is twice the amp and of great importance is the 2ohm stabilty. Thats of huge importance...actually it show's how big of power supply it has and the quality of its output transitors...The things that make it boom and still live.

Now as to the HU the output voltage is more than needed. The jbl input sensitivity starts at 600mv and ends at 6v..not problem there,

Here is where the jbl shines...you can run those four infinity's in series at 4 ohms on the front channel and bridge the rear to run a sub at 4 ohms. You have fader or volume control for both channels and cross over's for the sub...On a budget its a hard act to follow and rock solid. Here is a very over looked performance aspect...Your running at 4ohm's not close to the 2 ohm stabilty it has and thats with 6 spkrs...Could you run 2 ohm's by the spec sheets yes....Best not go there..simply bad karma
 
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SuperMiguel

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Re: Boat audio system

Tail_Gunner said:
http://www.sonicelectronix.com/item_17760_MB-Quart-NAU-660.html
?RMS Power Rating:
◦4 ohms: 60 watts x 6 chan.
◦2 ohms: 90 watts x 6 chan.
◦Bridged, 4 ohms: 180 watts x 3 chan

http://www.sonicelectronix.com/item_12244_JBL-GTO1004.html

RMS Power @ 4 ohms

100 watts x 4 channels



RMS Power @ 2 ohms

150 watts x 4 channels



Bridged RMS Power

300 watts x 2 channels


Total RMS Power Output

600 watts

The jbl is twice the amp and of great importance is the 2ohm stabilty. Thats of huge importance...actually it show's how big of power supply it has and the quality of its output transitors...The things that make it boom and still live.
Click to expand...

But it is not marine? i read online that non marine equipment will die quick due to the salt air..
 
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SuperMiguel

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Re: Boat audio system

How about the other jbl the ma6004 better than the nau660??
 
Tail_Gunner

Tail_Gunner

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Re: Boat audio system

SuperMiguel said:
Where are jbl made?
Click to expand...

http://www.audioheritage.org/vbulletin/showthread.php?27692-The-End-of-an-Era :facepalm:

Take your pick....Geesh.. Ok lets see

http://www.sonicelectronix.com/item_17760_MB-Quart-NAU-660.html


High-Pass Crossover Frequency

40 - 250 Hz



Low-Pass Crossover Frequency

40 - 250 Hz



Signal-to-Noise Ratio

93 dB



Channel Separation

80 dB



Bass Boost

0 - 6 dB



Bass/Gain Remote

No



Fan Cooled

No



Fuse Rating

70A x 1



CEA-2006 Compliant.....In other words the published spefication's are not as they appear to be

No
 
Tail_Gunner

Tail_Gunner

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Re: Boat audio system

Well Miguel if you are on the ocean Marine is the way to go. The MB has more built in growth,,The jbl gto was a eye opener for me i could not believe car audio or marine has come along as far as it has that is why i was all over that amp but salt air is bad stuff.I would expect the jbl Marinl to be a more rugged amp if you will. Its your purchase have some fun with it the jbl is a safe bet but the mb might do the job well....Personally subs in boats have no value..but my music does not have much sub content im sure some will comment on this long thread..The only thing i can think of is the budget and the system so far is quite nice for 500

Ok ive thought about this for a while over a toddy and have come to realize a few things. Know matter what you put in there the salt will eat in a few yrs..The infinty spks have the voice coils protected with sealed spiders (protects your voice coil's). The jbl amp can run four speaker's on one channel into a 2 ohm load giving you 80 watts rms into 4 spkrs..that's a lot of juice..You can bridge the second channel into one creating another 80 wats for the sub...Look into cerwin vega subs very efficent

Thats running 5 spkrs within the mfg specs 80x4 and one mono channel 80 and you have the ability to use a crossover network for each channel..
The sony HD i posted is gone but http://www.techronics.com/caraudio_...ceiver-w-Remote-and-iPod-Cont-.html?aff=72182 now you have sub outputs and a usb drive
 
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SuperMiguel

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Re: Boat audio system

So this is what im leaning too at the moment.

HU: Sony CDX-H910UI
AMP: MB Quart NAU660
Speakers: JBL MS6200

Total: $456.80

Edit: i may be able to push it a bit and get:

HU: Sony CDX-H910UI $168
AMP:JBL MA6004 $106.06
Speakers: JL Audio MX650 $169 each pair

Total: $612
 
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SuperMiguel

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Re: Boat audio system

Or i can even go with a single pair of JL Audio Marine M650-CCX-CG-WH until i get money for a second pair

So basically:

HU: Sony CDX-H910UI $168
AMP:JBL MA6004 $106.06
Speakers: M650-CCX-CG-WH $269 pair

Total: $543

Still in my price range.. Then next month i can get another pair of M650, Just not sure if the AMP and the HU are any good for this speakers

Or get a better amp, and a single pair of MX650 and get another pair next month..
 
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