Speakers, sub, amp ohm question

white37014 · 07-17-2016, 10:34 AM

Quick question for the audio heads out there. I am looking at an amp it's a 5 channel amp that can be bridged for the front speakers and can be ran for a single sub as well. Here's my question can I run my speakers at 4ohm up front and the single sub at 2ohm, or does the entire system have to be ran at 4? Thanks for the help

YzGyz · 07-17-2016, 11:01 AM

Specs should be on the amp itself. As far as I know, 5 channel amps have the 5th channel as dedicated sub channel. The Manuel should say what ohm the channel run at and at how many watts. Bridging or running parallel will give different ohm (like use 1 + terminal from on channel and 1 -from another to run a speaker vs combining 2 +wires together and 2-wires together to power a speaker).

YzGyz

white37014 · 07-17-2016, 11:19 AM

The amp I am looking on the subwoofer channel is as follows; 2 ohm 300watts 3ohm 240 watts and 4 ohm at 180 watts, and for the main channels it says 2 bridged at 4ohm for 200watts, thank for the response

YzGyz · 07-17-2016, 11:34 AM

Well there is your answer. The amp probably has a switch for the sub channel to control what ohm it will run at. The 4 main channel might have a switch that will control all 4 channels. There should be a simple diagram showing what you have to do to run whatever watt/ohm you want.

YzGyz

white37014 · 07-17-2016, 12:01 PM

Thanks figured I would ask before I bought to make sure

RonRizz · 07-17-2016, 07:18 PM

There is no switch, the amp "sees" whatever ohm load you connect to it all on its own.
That all said, you are safe to run subs in 2 ohm, and bridge fronts to 4 ohms.

white37014 · 07-17-2016, 07:35 PM

I was looking at the jl c5-650 component speakers the Rms is 75 each with max at 225, would brdging at 200 be to much for these speakers to handle?

YzGyz · 07-17-2016, 08:57 PM

Good deal Ron. 3 channel^5 channel amps are definitely not my thing. I only run dedicated amps. Good brain food.

YzGyz

07-17-2016, 10:34 AM	#1 (permalink)
white37014 Base Member Join Date: May 2014 Location: Pa Posts: 114 Drives: 14 370 base sport 6t Rep Power: 11	Speakers, sub, amp ohm question Quick question for the audio heads out there. I am looking at an amp it's a 5 channel amp that can be bridged for the front speakers and can be ran for a single sub as well. Here's my question can I run my speakers at 4ohm up front and the single sub at 2ohm, or does the entire system have to be ran at 4? Thanks for the help

07-17-2016, 11:01 AM	#2 (permalink)
YzGyz A True Z Fanatic Join Date: Jun 2013 Location: Houston Posts: 1,449 Drives: 2010 Nismo Rep Power: 63	Specs should be on the amp itself. As far as I know, 5 channel amps have the 5th channel as dedicated sub channel. The Manuel should say what ohm the channel run at and at how many watts. Bridging or running parallel will give different ohm (like use 1 + terminal from on channel and 1 -from another to run a speaker vs combining 2 +wires together and 2-wires together to power a speaker). YzGyz __________________ http://www.the370z.com/members-370z-...gyzs-turn.html YzGyz

07-17-2016, 11:34 AM	#4 (permalink)
YzGyz A True Z Fanatic Join Date: Jun 2013 Location: Houston Posts: 1,449 Drives: 2010 Nismo Rep Power: 63	Well there is your answer. The amp probably has a switch for the sub channel to control what ohm it will run at. The 4 main channel might have a switch that will control all 4 channels. There should be a simple diagram showing what you have to do to run whatever watt/ohm you want. YzGyz __________________ http://www.the370z.com/members-370z-...gyzs-turn.html YzGyz

07-17-2016, 07:18 PM	#6 (permalink)
RonRizz A True Z Fanatic Join Date: Aug 2011 Location: Pine grove, Pa Posts: 2,136 Drives: 2 feet, 3 pedals Rep Power: 6775	There is no switch, the amp "sees" whatever ohm load you connect to it all on its own. That all said, you are safe to run subs in 2 ohm, and bridge fronts to 4 ohms. YzGyz likes this. __________________ P99rs Head Unit--- Amps- 2 Pioneer Prs800d --- Zapco ST1000MX---Zapco ST-4XSQ---- SI BM mk5 Subs---SI TM65v2 Midbass--- SI M3 mids--- SI M25 xbl2 tweeters ----- 2016 MECA street class 3rd place at world finals

07-17-2016, 08:57 PM	#8 (permalink)
YzGyz A True Z Fanatic Join Date: Jun 2013 Location: Houston Posts: 1,449 Drives: 2010 Nismo Rep Power: 63	Good deal Ron. 3 channel^5 channel amps are definitely not my thing. I only run dedicated amps. Good brain food. YzGyz __________________ http://www.the370z.com/members-370z-...gyzs-turn.html YzGyz

07-17-2016, 11:19 AM	#3 (permalink)
white37014 Base Member Join Date: May 2014 Location: Pa Posts: 114 Drives: 14 370 base sport 6t Rep Power: 11	The amp I am looking on the subwoofer channel is as follows; 2 ohm 300watts 3ohm 240 watts and 4 ohm at 180 watts, and for the main channels it says 2 bridged at 4ohm for 200watts, thank for the response

07-17-2016, 12:01 PM	#5 (permalink)
white37014 Base Member Join Date: May 2014 Location: Pa Posts: 114 Drives: 14 370 base sport 6t Rep Power: 11	Thanks figured I would ask before I bought to make sure

07-17-2016, 07:35 PM	#7 (permalink)
white37014 Base Member Join Date: May 2014 Location: Pa Posts: 114 Drives: 14 370 base sport 6t Rep Power: 11	I was looking at the jl c5-650 component speakers the Rms is 75 each with max at 225, would brdging at 200 be to much for these speakers to handle?

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