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Fusing Question


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hey folks i just recently installed my memphis mch1300, and it's a really good sounding amp. i'm a little confused about what outboard fuse to run. it uses 6 30a fuses and i have a 100a fuse between the amp and battery. is the 100a fuse big enough or do i need more?

spec sheet

5-Channel MClass Series Amplifier

Class-AB / Class-D Hybrid Amplifier

Compact Aluminum Chassis with Custon Black Pearl Finish

Gold Plated RCA Connectors

Full MOSFET Design

Fully Variable Crossover: HP/LP (40 Hz - 6 kHz) (Channels 1-4)

Fully Variable Crossover: LP (50 Hz - 250 Hz), Subsonic (20 - 50 Hz) (Channel 5)

4-Way Protection Circuitry

Platinum Finish Wire Connections

Accepts 4 Gauge Power and Ground Wire

Optional Wired Remote Gain Control

RMS Power Ratings:

75 watts x 4 chan. / 300 watts x 1 chan. @ 4 ohms

115 watts x 4 chan. / 600 watts x 1 chan. @ 2 ohms

1100 watts x 1 chan. @ 1 Ohm (ONLY CHANNEL 5 IS 1 OHM STABLE!)

Adjustable Input Sensitivity: 200mV - 4V

Dimensions: 25.81" L x 7.6" W x 2.4" H

1-year Sonic Electronix warranty

Amplifier Specifications:

Amplifier Class Channels 1-4: A/B, Channel 5: D

Number of Channels 5

RMS Power (4 ohms) 75 watts x 4 chan. + 300 watts x 1 chan.

RMS Power (2 ohms) 115 watts x 4 chan. + 600 watts x 1 chan.

RMS Power (1 ohm) 1100 watts x 1 channel for the 5th channel (Channels 1-4 Not Stable)

Bridged RMS Power 230 watts x 2 channels

Peak Power Output N/A

Minimum Impedance Unbridged 2 ohms (Channels 1-4), 1 ohm (Channel 5)

Minimum Impedance Bridged 4 ohms

THD at Rated RMS Power 0.03%

Speaker Level Inputs No

Preamp Outputs No

Built-in Crossover High-pass (HP), Low-pass (LP), Full (AP)

High-Pass Crossover Frequency 40 - 6000 Hz

Low-Pass Crossover Frequency Channels 1-4: 40-6000Hz and Channel 5: 50-250Hz

Subsonic Filter 20 - 50 Hz

Signal-to-Noise Ratio 95 dB

Channel Separation N/A

Bass Boost N/A

Bass/Gain Remote Optional (Memphis 16-MCRG required and sold separately)

Fan Cooled No

Fuse Rating 30A x 6

Edited by benz280se
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hey folks i just recently installed my memphis mch1300, and it's a really good sounding amp. i'm a little confused about what outboard fuse to run. it uses 6 30a fuses and i have a 100a fuse between the amp and battery. is the 100a fuse big enough or do i need more?

spec sheet

5-Channel MClass Series Amplifier

Class-AB / Class-D Hybrid Amplifier

Compact Aluminum Chassis with Custon Black Pearl Finish

Gold Plated RCA Connectors

Full MOSFET Design

Fully Variable Crossover: HP/LP (40 Hz - 6 kHz) (Channels 1-4)

Fully Variable Crossover: LP (50 Hz - 250 Hz), Subsonic (20 - 50 Hz) (Channel 5)

4-Way Protection Circuitry

Platinum Finish Wire Connections

Accepts 4 Gauge Power and Ground Wire

Optional Wired Remote Gain Control

RMS Power Ratings:

75 watts x 4 chan. / 300 watts x 1 chan. @ 4 ohms

115 watts x 4 chan. / 600 watts x 1 chan. @ 2 ohms

1100 watts x 1 chan. @ 1 Ohm (ONLY CHANNEL 5 IS 1 OHM STABLE!)

Adjustable Input Sensitivity: 200mV - 4V

Dimensions: 25.81" L x 7.6" W x 2.4" H

1-year Sonic Electronix warranty

Amplifier Specifications:

Amplifier Class Channels 1-4: A/B, Channel 5: D

Number of Channels 5

RMS Power (4 ohms) 75 watts x 4 chan. + 300 watts x 1 chan.

RMS Power (2 ohms) 115 watts x 4 chan. + 600 watts x 1 chan.

RMS Power (1 ohm) 1100 watts x 1 channel for the 5th channel (Channels 1-4 Not Stable)

Bridged RMS Power 230 watts x 2 channels

Peak Power Output N/A

Minimum Impedance Unbridged 2 ohms (Channels 1-4), 1 ohm (Channel 5)

Minimum Impedance Bridged 4 ohms

THD at Rated RMS Power 0.03%

Speaker Level Inputs No

Preamp Outputs No

Built-in Crossover High-pass (HP), Low-pass (LP), Full (AP)

High-Pass Crossover Frequency 40 - 6000 Hz

Low-Pass Crossover Frequency Channels 1-4: 40-6000Hz and Channel 5: 50-250Hz

Subsonic Filter 20 - 50 Hz

Signal-to-Noise Ratio 95 dB

Channel Separation N/A

Bass Boost N/A

Bass/Gain Remote Optional (Memphis 16-MCRG required and sold separately)

Fan Cooled No

Fuse Rating 30A x 6

can somebody please just take two seconds and say if the 100 amp fuse is big enough or should i go up?

Edited by benz280se
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100a fuse is too small.

The amp fuse rating total is 160a.

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HiFonics BXX1200.1D @ 1ohm

Random 2.5^3' dual ported box

NVX LOC

Stinger wiring throughout 

 

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What size wire are you using? That is what determines the fuse size for the power wire.

Head Unit: Pioneer DEH-P6000UB

Sub Amp:American Bass VFL 500.1

Subs: 4 Fi BL 18's

Enclosure:21.5 Cubic foot flat wall tuned to 40 hz

Batteries: 3 Kinetik 2400's in the back, Kinetik 1200 under hood.

Mids & Highs: 4 Kicker DS 6.5 coax in doors, 2 Kicker DS coax in pillars

Highs Amp: Kicker kx250.2, kx100.2

Wire: 4 Runs 1/0 gauge Knukonceptz

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See you wont get a quick answer cause you didn't even bother using a search and look for yourself.

Dont be lazy, do some homework.

2008 California state record holder 157.2 Bassrace2009 California state record holder 157.0 BassraceRollin 50's 158.7db2009 King of Cali Bassrace2009 USACi score 160.5 @ 42hz
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thanks for your replies right now i am using 4 gauge wire since i had it already in the vehicle, and the terminals on the amp accept 4 gauge. when i get more money and time i'll add 0 gauge, but in the meantime, i will get a 160a fuse then. thank you guys a lot.

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See you wont get a quick answer cause you didn't even bother using a search and look for yourself.

Dont be lazy, do some homework.

i really dont like being an internet smartass but with this long answer you gave, it might have been easier to do this

100a=bad, 160 or larger=good.

less space, question answered, no aggravation :D

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Uhhh...

30a x 6 = 180a

You know, I was thinking that number wasn't right...

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If you build it, db's will come...

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Competition Only Record Holder Trunk 0-500 watts---148.1

2006 Nissan Altima 3.5 SE

Currently Rebuilding....

My 150db Plus Trunk Build

I do box designs.

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[benH] 6:24 pm: being an idiot is what blows subs

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