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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[deadrx7conv 10+ year member]

Are the PG subs SVC or DVC?

 

[Mission Shane]

Svc

 

[audiobaun 5,000+ posts]

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

Just one amplifier for the subs? The speakers are running off the HU alone?? Is this what Im reading here?

 

[audiobaun 5,000+ posts]

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

What is the model # on the MTX amplifier?

 

[Mission Shane]

What is the model # on the MTX amplifier?

**** not sure. Its in the car. But it is mtx thunder wet 75.4. Marine amp 400 w

 

[Mission Shane]

Just one amplifier for the subs? The speakers are running off the HU alone?? Is this what Im reading here?

Ya they are. Im just trying to get a bit of bass into it

 

[audiobaun 5,000+ posts]

**** not sure. Its in the car. But it is mtx thunder wet 75.4. Marine amp 400 w

Ya.. Ill need the model # off of it to look at the specs man. but You should be able to Bridge ch 1&2 into one for running @ a 4 ohm load on one sub and the same for 3&4. Most of the older amps were rated @4 ohm Max bridged and 2 ohm stereo. i have quite a few old school amps. There are quite a few old school Cheaters that will run 2 ohm mono/bridged with good electrical and some cooling. I can run an Autotek BTS 7050 @2ohms and slamm a 600 rms sub

 

[deadrx7conv 10+ year member]

Bridge the amp.. Each bridged pair of channels should be able to feed the 4-ohm SVC woofer

 

[audiobaun 5,000+ posts]

Ya they are. Im just trying to get a bit of bass into it

All good. I like Bass myself. LOL

 

[audiobaun 5,000+ posts]

To wire 1 SVC4 ohm speaker to the bridged 2 ch @4 ohms pictured here. You will need to know which wires to be used to bridge the two chs. properly .Thats why I ask Model# of the amplifier to look at the specs to verify the wiring as well as the stability of that amp

Subwoofer Wiring Diagram for One 4 Ohm Single Voice Coil Speaker

www.the12volt.com

 

[audiobaun 5,000+ posts]

As well.. When Bridged for the lows. make sure you place the Xover switch to LP/LPF and not on HP/HPF, and attach the sub speaker wiring Bridged on the speaker terminals of that amplifier

 

[Mission Shane]

To wire 1 SVC4 ohm speaker to the bridged 2 ch @4 ohms pictured here. You will need to know which wires to be used to bridge the two chs. properly .Thats why I ask Model# of the amplifier to look at the specs to verify the wiring as well as the stability of that amp

Subwoofer Wiring Diagram for One 4 Ohm Single Voice Coil Speaker

www.the12volt.com

I know which terminals to be used for bridging. it also shows right at the terminals. Im wondering which way will give me the better sound out of the subs.

 

[Mission Shane]

Bridge the amp.. Each bridged pair of channels should be able to feed the 4-ohm SVC woofer

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

 

[audiobaun 5,000+ posts]

I know which terminals to be used for bridging. it also shows right at the terminals. Im wondering which way will give me the better sound out of the subs.

I found it. Thank you

MTX WET75.4

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

www.crutchfield.com