jvc 4 channel vs fusion 4 channel

[scoobygt]

fusion is 700w jvc is 800w will be bridging the 2 channels together in order to run a sub

[Timmah]

What\'s the RMS values of each AMP?

[scoobygt]

fusion is 160w rms bridged, jvc is 150w rms bridged

[scoobygt]

the fusion runs our subs well on the sound board but haven\'t heard the jvc

[ADIKT]

Specs of sub?

[spark_38]

Old school Fusion is better. I\'m using a FP4-1000X; 130W x4 (RMS), the new greeen ones are nowhere near that - maybe 65W x4 at a guess.

Bridged you can only run a SVC, 4-ohm sub (or a dual 2-ohm wired in series).

I\'ve never had one fail, they seem quite robust. The FP-402 lasted many years, was used in about 3 cars - then I needed more power!

[scoobygt]

http://www.fusionelectronics.com/car/products/subwoofer-cp-series/cp-12-Subwoofer

[scoobygt]

maybe this amp to drive it?

http://www.trademe.co.nz/motors/car-stereos/amplifiers/mono-1-channel/auction-564209470.htm

[ADIKT]

 scoobygt said:

maybe this amp to drive it?

http://www.trademe.co.nz/motors/car-stereos/amplifiers/mono-1-channel/auction-564209470.htm

Ive only owned one cerwin vega amp. And i didnt like it one bit. Changed to and earthquake amp of similar size and the difference in sound quality was incredible. my $0.02

[ADIKT]

 scoobygt said:

http://www.fusionelectronics.com/car/products/subwoofer-cp-series/cp-12-Subwoofer

That sub will be sweet running on a bridged amp. Should sound all good.

Idealy you want to match the RMS power ratings on both the sub and amp.

[scoobygt]

yeah well we have those 4 channel one\'s on special for $149 down from $299 so this is the only reason i\'m looking

[spark_38]

 ADIKT']

[quote name='scoobygt said:

url]http://www.fusionelectronics.com/car/products/subwoofer-cp-series/cp-12-Subwoofer[/url]

That sub will be sweet running on a bridged amp. Should sound all good.

Idealy you want to match the RMS power ratings on both the sub and amp.

Subs/speakers in general don\'t mind extra power, so a 325W rated sub (like that fusion) will be happy with 400W (rms) or more, as long as it\'s not clipping or distorting - back the gain settings off a bit on the amp

[scoobygt]

gain is volume right? if so i\'m not one of these people who drives round with there sub pounding, i\'m level with the music

[boon]

 scoobygt said:

gain is volume right? if so i\'m not one of these people who drives round with there sub pounding, i\'m level with the music

Gain is gain. Volume is volume. Although changing the gain will make it louder/quieter, it\'s used to match the amp to the rest of your system.

[spark_38]

 boon']

[quote name='scoobygt said:

gain is volume right? if so i\'m not one of these people who drives round with there sub pounding, i\'m level with the music

/quote]

Gain is gain. Volume is volume. Although changing the gain will make it louder/quieter, it\'s used to match the amp to the rest of your system.

Yep - too often I\'ve found people have the gain setting too far clockwise on 4V+ pre-outs and the amp is maxed at 1/4 of the volume setting on the headunit.

I had to back it a whole half turn, now they can use 5/6 of the volume control.

[scoobygt]

so basically turn the sub right up on the head unit and back the gain down on the amp?

[spark_38]

 scoobygt said:

so basically turn the sub right up on the head unit and back the gain down on the amp?

Essentially, yes. But if you have time; read on.

The sub settings on the headunit usually have a negative to zero to positive setting. I normally have it on 0 to set.

Start with the gain settings on the amps fully anti-clockwise and crank the volume on the headunit between 3/4 and full, tweak them till you have a nice balance, nice and loud without distortion - essentially this is your maximum volume level; the reason I suggest using 3/4 volume is to compensate for quieter music, such as Dire Straits

The important bit is to have loudness off, and a flat EQ setting when doing this. If the headunit had HPF settings use either 80 or 100Hz, and LPF to 80Hz - it\'s a lot easier than tweaking the freq knobs on the amps, just set them to the off position (Off/HPF/LPF).

I usually do the speakers first, and the sub last - but that\'s personal preference

Have a play around and tweak the EQ\'s to suit personal taste, I usually attenuate the high end by -1 or -2, depending on the harshness of the tweeters.. and since you\'ve tuned the sub on 0 setting, there is fine adjustment for less or more bass, depending on the type of music.

[scoobygt]

thanks man you\'ve been really helpfull