2 Alpine Type R 1243D Dual 4ohm with crunch 1400.2?

[ERIKCABRERA 10+ year member]

Hey guys i got a quick question, i have the new model alpine type r 1243d, I want to use a crunch 1400.2 amp at 4ohms 1 channel that gives 1400rms, now if i put inner positive to inner negative with the jumper cable on each sub, and connect the speaker wires to the outside positive/negative, i should get the amp to give me 4ohm, and i put it on mono instead of stereo. Now m question is since my subs are 600rms max, this setup should give it 700rms to each one but i hear that crunch is over rated so would this amp be fine for these subs?

Heres the amp info:

2 Channel - 4ohm

1400 Watts x 1 ch @ 4 Ohms

700 watts x 2 ch @ 2 Ohms

350 watts x 2 ch @ 4 ohms

Bridgeable amplifier

MOSFET outputs

PWM digital power supply

High level inputs for OEM Radios

Fully Adjustable Crossovers

SEPP A/B Class Amplifier Designs

All 2-Channel and 4-Channel Feature Bridgeable Designs

CRUNCH Illuminated Logo

Rugged MOSFET Pulse Width Modulation Power Supply for Instant Maxx Power Output

1-Ohm Capable A/B Class Mono Block Amps

2-Ohm Capable A/B Class 2/4/5-Channel Amps

So this is how i think about connecting everything.

Click to read more...

 

[sacsking916 5,000+ posts]

I'll be the one to break it to you, that amp won't so what you want it to.

 

[ERIKCABRERA 10+ year member]

hmm? How could it not, i understand its not a high class amp but ti should at least work fine with the subs, or your saying that if i do set it up the way i want to, this amp will not do anything at all to it?

 

[sacsking916 5,000+ posts]

The amp will work sorta. Why not take the woofers to 2 ohms and utilize both channels instead of making it confusing on yourself? Its "rated" the exact same.

 

[ERIKCABRERA 10+ year member]

It is rated the same way but theres no way to connect these subs like that, i checked the manual and 2 4ohm subs cant be connect so that 1 amp gives it 2ohm

ok so if this amp is no good, would you say that i should get the JBL GTO-14001 thats 1200rms at 4ohms x 1channel?

 

[sacsking916 5,000+ posts]

Wire each sub in parallel and run them to each channel. That would give you the 700x2@2ohm like the amps supposed to do. I read earlier someone say an audioque 1000.1 was around 100ish if I remember correctly. If you already have the amp then I'd say use it. If not look for a 1ohm stable amp that will power them. Hope that helps

 

[ERIKCABRERA 10+ year member]

you got a diagram for running it parallel

 

[sacsking916 5,000+ posts]

Positive to positive....... negative to negative.... positive& negative to one channel. And the same on the other woofer to the other channel.

 

[ERIKCABRERA 10+ year member]

i tried that once and the bass was soft, i know it because the amp is a low class amp. Ok so what amp do you recommend for my subs, i was thinking on the JBL GTO14001 but its a A/B Class so its might not be good, i need a amp thats 1000-1200rms at 4ohms x 1 channel

 

[sacsking916 5,000+ posts]

The audioque amp I mentioned is definitely not bad. I believe its 1 ohm stable also so you'll be able to drop the impedance down and get the most out of your amp. Downfall is the lower the impedance the more draw it takes off your electrical system

 

[ERIKCABRERA 10+ year member]

Yeah, ima have to replace the crunch amp, so which would you prefer, The AQ1200d that has 1200 x 1 at 1ohm, or the one you suggested the AQ 1000d?

Heres the link to the 1200d for people who are not familiar with it. AQ1200D Amplifier

 

[Vossy 10+ year member]

You can do it how the picture is, but technically it's the same power as 2 ohms per channel.