Need help with wiring subs and amp correctly.

[Mission Shane]

Ok so here it goes.
I have a Kenwood KDC-BT848BU head unit wited to the 4 reg speakers and a MTX Thunder 400w 4 ch amp running to 2 old school Phoenix Gold 8" subs 200w each but 4 ohms. The amp is bridgeable. With the subs being 4 ohms, what are my options? I don't wanna burn out the amp. Although older, it is brand new. Was bought and never used. Do i run them in parallel to a bridged amp? Or just straight wire one sub to one channel? I'll be replacing the subs soon. I just don't know with what tho. Thanks in advance

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[audiobaun 5,000+ posts]

So bridge the amp. Then run each sub on their own, not in parallel?

Yes! It will be 200x2 @ 4 ohms Bridged by specs

MTX WET75.4

4-channel marine amplifier — 75 watts RMS x 4 at 4 ohms

www.crutchfield.com

 

[deadrx7conv 10+ year member]

So bridge the amp. Then run each sub on their own, not in parallel?

Do not run the subs parallel. Each will be on its own.

 

[Mission Shane]

I found it. Thank you

MTX WET75.4

4-channel marine amplifier — 75 watts RMS x 4 at 4 ohms

www.crutchfield.com

I just posted pics lol

 

[audiobaun 5,000+ posts]

I just posted pics lol

Thanks man!!

 

[Mission Shane]

Yes! It will be 200x2 @ 4 ohms Bridged by specs

MTX WET75.4

4-channel marine amplifier — 75 watts RMS x 4 at 4 ohms

www.crutchfield.com

Thank u. I was told I'd fry the amp. Was told it would run at 2 ohms not 4. Says right on the amp (bridged 4 ohms". So then i could technically put 2 of these in and it won't cook the amp?

 

[audiobaun 5,000+ posts]

Yes. You want to wire each sub to theyre own Bridged chs. 2 the amplifiers 4ohm stable load. And make sure that you place your crossover switched to LP/LPF,. Off your HU, the Sub RCA, run one set of RCAs to the amplifier(be 2ch) and buy a set of Y RCA splitters and feed the single into 2 RCAs in from the two ch RCAS to make it 4 of left and right chs so the channels on the amplifier are getting signal from the HU off the Low/Sub RCAs

Subwoofer Wiring Diagram for One 4 Ohm Single Voice Coil Speaker

www.the12volt.com

https://www.monoprice.com/product?p_id=6261&utm_term=&utm_campaign=PMax:+Smart+Shopping+-+Monoprice+-+Cables&utm_source=google&utm_medium=cpc&hsa_acc=6614305189&hsa_cam=17490724715&hsa_grp=&hsa_ad=&hsa_src=x&hsa_tgt=&hsa_kw=&hsa_mt=&hsa_net=adwords&hsa_ver=3&gclid=Cj0KCQjw6KunBhDxARIsAKFUGs8NdngId_hqMlEGfq0k7XhDPYXDIHA42n1gzPxsplWbpAWsueXORy0aApzAEALw_wcB

 

[audiobaun 5,000+ posts]

Thank u. I was told I'd fry the amp. Was told it would run at 2 ohms not 4. Says right on the amp (bridged 4 ohms". So then i could technically put 2 of these in and it won't cook the amp?

Those are SVC 4 ohm subs,. You can run those on that amp. Sure as hell can!! You can run One sub on each Bridged 2 ch @ the Final 4ohm load for each sub. Just tune properly out of distortion at max HU volume on the HU and you should be just fine. not sure where you are getting your information from, but I would not listen or take any more advice from that individual any longer. Good to see you are doing your research to get some facts

JL Audio 12W1v2-4

W1v2 Series 12" 4-ohm subwoofer

www.crutchfield.com

 

[Mission Shane]

Those are SVC 4 ohm subs,. You can run those on that amp. Sure as hell can!! You can run One sub on each Bridged 2 ch @ the Final 4ohm load for each sub. Just tune properly out of distortion at max HU volume on the HU and you should be just fine. not sure where you are getting your information from, but I would not listen or take any more advice from that individual any longer. Good to see you are doing your research to get some facts

JL Audio 12W1v2-4

W1v2 Series 12" 4-ohm subwoofer

www.crutchfield.com

Lol thats why i came here lol. Thank you. This is correct? Now just split the input so all 4 rca jacks are full?

 

[audiobaun 5,000+ posts]

I would recommend an OFC 4 ga wiring kit for that amplifier to supply for the demand. Old school amp need to be fed to perform as most A/B amplifiers do.

AMPKIT-4GA-ELITE // 4 Gauge 2000 Watt Amplifier Wiring Kit (OFC)

The CT Sounds 4 gauge OFC complete amplifier wiring kit is perfect for systems rated up to 2000 watts and includes everything from a waterproof fuse holder to a bundle of zip ties for cable management to get your stereo going faster.

www.ctsounds.com

(2)RCA Splitters needed to get from 2 ch to 4 ch on the amplifier from the HU

https://www.monoprice.com/product?p_id=6261&utm_term=&utm_campaign=PMax:+Smart+Shopping+-+Monoprice+-+Cables&utm_source=google&utm_medium=cpc&hsa_acc=6614305189&hsa_cam=17490724715&hsa_grp=&hsa_ad=&hsa_src=x&hsa_tgt=&hsa_kw=&hsa_mt=&hsa_net=adwords&hsa_ver=3&gclid=Cj0KCQjw6KunBhDxARIsAKFUGs8NdngId_hqMlEGfq0k7XhDPYXDIHA42n1gzPxsplWbpAWsueXORy0aApzAEALw_wcB

 

[Mission Shane]

I would recommend an OFC 4 ga wiring kit for that amplifier to supply for the demand. Old school amp need to be fed to perform as most A/B amplifiers do.

AMPKIT-4GA-ELITE // 4 Gauge 2000 Watt Amplifier Wiring Kit (OFC)

The CT Sounds 4 gauge OFC complete amplifier wiring kit is perfect for systems rated up to 2000 watts and includes everything from a waterproof fuse holder to a bundle of zip ties for cable management to get your stereo going faster.

www.ctsounds.com

(2)RCA Splitters needed to get from 2 ch to 4 ch on the amplifier from the HU

https://www.monoprice.com/product?p_id=6261&utm_term=&utm_campaign=PMax:+Smart+Shopping+-+Monoprice+-+Cables&utm_source=google&utm_medium=cpc&hsa_acc=6614305189&hsa_cam=17490724715&hsa_grp=&hsa_ad=&hsa_src=x&hsa_tgt=&hsa_kw=&hsa_mt=&hsa_net=adwords&hsa_ver=3&gclid=Cj0KCQjw6KunBhDxARIsAKFUGs8NdngId_hqMlEGfq0k7XhDPYXDIHA42n1gzPxsplWbpAWsueXORy0aApzAEALw_wcB

Thanks man. Going to get 2 splitters now.

 

[Mission Shane]

I would recommend an OFC 4 ga wiring kit for that amplifier to supply for the demand. Old school amp need to be fed to perform as most A/B amplifiers do.

AMPKIT-4GA-ELITE // 4 Gauge 2000 Watt Amplifier Wiring Kit (OFC)

The CT Sounds 4 gauge OFC complete amplifier wiring kit is perfect for systems rated up to 2000 watts and includes everything from a waterproof fuse holder to a bundle of zip ties for cable management to get your stereo going faster.

www.ctsounds.com

(2)RCA Splitters needed to get from 2 ch to 4 ch on the amplifier from the HU

https://www.monoprice.com/product?p_id=6261&utm_term=&utm_campaign=PMax:+Smart+Shopping+-+Monoprice+-+Cables&utm_source=google&utm_medium=cpc&hsa_acc=6614305189&hsa_cam=17490724715&hsa_grp=&hsa_ad=&hsa_src=x&hsa_tgt=&hsa_kw=&hsa_mt=&hsa_net=adwords&hsa_ver=3&gclid=Cj0KCQjw6KunBhDxARIsAKFUGs8NdngId_hqMlEGfq0k7XhDPYXDIHA42n1gzPxsplWbpAWsueXORy0aApzAEALw_wcB

Ive got an 8 ga in now but i am going replace it when the new subs go in

 

[audiobaun 5,000+ posts]

Lol thats why i came here lol. Thank you. This is correct? Now just split the input so all 4 rca jacks are full?

Yes.. Make sure that you have the + and Neg wires for the sub in the Bridged correctly and make sure that you have the Xover set to LP/LPF. Make sure your gains on the amplifier are set to bare min, and you can tune from there properly so you dont cook a sub coil. LOL, and yes on the Y splitters for the amplifier

 

[audiobaun 5,000+ posts]

Thanks man. Going to get 2 splitters now.

the Mono Price are dammned good stuff and made very well. i recommend them. Other than that.. I use Stinger of which are more expensive. no need to spend more than you need too.

 

[audiobaun 5,000+ posts]

Ive got an 8 ga in now but i am going replace it when the new subs go in

4ga is a much better feed supply for an older A/B amplifier. Id run 1/0ga supply if you decide to run more power. But, 4 ga will be better than 8ga supply, and make sure you use OFC not CCA wire.

 

[Mission Shane]

Man you're a wealth of info. Thanks again. I'll be around asking more questions im sure.