wiring sub, 6x9's, 5.25's, amp
Printed From: the12volt.com
Forum Name: Car Audio
Forum Discription: Car Stereos, Amplifiers, Crossovers, Processors, Speakers, Subwoofers, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=96121
Printed Date: May 13, 2025 at 4:02 PM
Topic: wiring sub, 6x9's, 5.25's, amp
Posted By: snakestance
Subject: wiring sub, 6x9's, 5.25's, amp
Date Posted: August 02, 2007 at 12:15 PM
I need help in wiring what I have. Basically I have 1 10" sub, 2 6x9's, and 2 5.25" one 4 channel amd that is 2 ohm stable. Here it goes. DB Drvie Speed Series Speakers I hope someone can help me. Thanks in advance for all the great info on this awsome sight!!! This is going in my 1963 Ford Falcon. 
icbm-774
4 CHANNEL BRIDGEABLE POWER AMPLIFIER
MAX OUTPUT POWER : 250Wx4CH @ 2 OHM
POWER OUTPUT :
100Wx4CH @ 2 OHM
80Wx4CH @ 4 OHM
200Wx2CH BRIDGED
24dB/OCT. CROSSOVER SLOPE
VARIABLE SUBSONIC FILTER (10Hz-100Hz)
VARIABLE LOW PASS FILTER (30Hz-500Hz)
VARIABLE HIGH PASS FILTER (50Hz-1KHz)
VARIABLE 18dB BASS BOOST
HIGH & LOW LEVEL INPUT THROUGH RCA
DOUBLE SIDED PCB
DUAL PROTECTION (THERMAL & SHORT CIRCUIT)
RCA LINE OUT (PREAMP)
POWER & DIAGNOSTIC LED INDICATOR
2 OHM STABLE STEREO
SOFT DELAYED POWER ON
TRI-MODE CAPABILITY
0.05% THD SP90.2 6 x 9" three-way speaker 300 watts 100 watts 45Hz - 20kHz 92dB SP50.2 5.25" coaxial speaker 150 watts 55 watts 55Hz - 20kHz 89dB SPW10.2D 10" dual 4 ohm voice coil 600 watts 300 watts 85dB 50 oz.
Replies:
Posted By: DYohn
Date Posted: August 02, 2007 at 2:02 PM
You want to operate your sub and four speakers from that single 4-channel amp? OK. First let me suggest you should purchase a separate 2-ohm stable mono subwoofer amp. But, anticipating that you don't want to or can't do that: You will be forced to give up front/rear fade. Connect both "left" speakers to channel 1, both "right" speakers to channel 2. Drive channels 1 and 2 from the "front" RCA output from your head unit. Your sub is DVC 4-ohms, so you will have to either connect one voice coil to each of channels 3 and 4, or wire the sub in series (8-ohm load) and connect to the bridged output of channels 3 and 4. Either will give you the same power utilization to the sub. Drive channels 3 and 4 from the "subwoofer" output from your head unit and make sure that output is turned on. Activate the HP filter for channels 1 and 2 and the LP filter for channels 3 and 4. Set them both to the same frequency, about 80-100Hz. Set you gains properly. ------------- Support the12volt.com
Posted By: snakestance
Date Posted: August 02, 2007 at 2:24 PM
My head unit is an old but nice alpine in dash 3 disc changer. It has the rca's for front, rear, and sub. So I wire the left front and left rear to channel 1 (front rca) I then wire the right front and rear to channel 2 (rear rca). I wire the sub bridged to channel 3 and 4 (sub rca) Can I wire the sub in parallel instead of in series? Also, what is tri mode capability? Thank you for your help!!
Posted By: DYohn
Date Posted: August 02, 2007 at 3:19 PM
No, I am suggesting you use only the front RCA outputs to drive channels 1 and 2 and do not use the rear RCA outputs at all. Then use the subwoofer output to drive channels 3 and 4. Tri-mode means you could potentially connect the sub across channels 3 and 4 and use one set of speakers on channels 3 and 4 in stereo. But this will require two things: first that you drive channels 3 and 4 from the rear RCA output and not from the sub output (which means you will need to make sure the subwoofer crossover in the HU is off and that a full-range signal is going to the rear output) and second you will need to buy or build a passive crossover to use with the sub and the rear speakers. If you decide you want to try this, I highly recommend you get some assistance from a local install shop (and expect them to give you crap about that amplifier being a flea-market brand.) ------------- Support the12volt.com
Posted By: snakestance
Date Posted: August 02, 2007 at 3:27 PM
Got it. Would it be easier and better to just get a smaller amp to run the 5.25 in the doors, and then run the 6x9's and the sub off of the 4 channel? Thanks for your help. If I were to call for help and they gave me crap, I would just tell them politely that I was asking for some advice. If they would give me the advice, then great, if made fun of my amp, I would just say soory I wasted my time and yours. Thanks for all of your help. My birthday is coming up so, guess what I will be asking for??? Thanks again for your help.
Posted By: DYohn
Date Posted: August 02, 2007 at 3:45 PM
I think you'd be better off if you do buy another amp to get a subwoofer amp and use this one as a 4-channel amp for the four main speakers. ------------- Support the12volt.com
Posted By: snakestance
Date Posted: August 02, 2007 at 3:48 PM
Good thinking. Had not thought about that. Too wrapped trying to make it work with one amp!!! Based on the info of the sub, what would you recomend? I have the sub in a sealed box. I like bass, but not boomy base. More of solid thump!
Posted By: DYohn
Date Posted: August 02, 2007 at 4:22 PM
Look for a mono amp rated at about 300 watts into 2-ohms. ------------- Support the12volt.com
Posted By: snakestance
Date Posted: August 02, 2007 at 4:23 PM
OK Thanks again for your help and advice. I really appreciate it. I have some ideas to go on now.
Posted By: DYohn
Date Posted: August 02, 2007 at 4:32 PM
No prob, that's why we're here.  ------------- Support the12volt.com
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