I'm going to intall 3 subs and 3 amps. Do I use a rca spliter or something to connect the 3 sub amps to the headunit?


Thx,

 

yep, you use as manner splitters as you need to get the number of rca outputs that you need.

 

PoormanQ45--don't you post at the12volt.com? I remember seeing your posts over there. You have a Z too?

In response to the question at hand, you can also use pre-amp outputs if the amps have them.

 

Some amps are daisy-chainable(have rca outputs). Bascially that allows you to run one set of rca's to the amp rack.

Edit:
Sounds like your putting together a pretty serious bass setup.
What kind of line voltage does the headunit put out? If your amps don't have rca outs...and/or your h/u line voltage is less than 4volts rms...I'd considering running a line-driver. Phoenix Gold's PLD or Audio Control's Overdrive are nice line drivers. Probably some other brands are available but I've used these two with good results. The overdrive will give you a little more voltage than the PG so I'd go with it They run around $100 or so.

Line-drivers were very common back years ago before high voltage h/u's were common(cheap) and are still useful today when your install requires "watering down" of the line signal by splitters, etc. Plus most "high- voltage" h/u's don't put out near the advertised voltage as rms.

If you do use one...be sure to mount it behind the h/u and run as short rca cable as possible to it.

 

Tx,

After looking at your sig...I take it your still running the bose h/u.

If so, i assume your running line coverter. If your running the bose h/u and will be trying to feed 3 or more amps off it...i'd really consider a line driver. Mount it as close to the converter as possible.

Note: I've never run a line driver with a line converter in front of it so I don't exactly know how it will react as far as line noise though. I'd say if your not noticing any line noise now...you'd probably be ok.

 

why not use one amp and series-parallel combo the sub wiring. Cheaper, and you can probably get more out of your amp with a lower load from the subs.

just a thought...

 

If you are using 3 amps with 3 subs, make sure your subs are in seperate enclosures.

 

Maybe this will help; I should have posted it before. I'll be adding this to my current configuration and I will be replacing the stock Bose H/U. Thanks for all the suggestions so far. I'm going to look into the RCA in/out on the amps that seems like a slick way to do it if it's supported. Anyway here are my system components (All comments appreciated good or bad )

H/U Kenwood Excelon DDX8017
3-12" P5 1600watt sony xplod subs
3-1600watt P5 monoD sony amps
1-Pioneer gmx924
4 earthquake 6.5 speakers 400 w RMS (stock location)
2 tweeters with crossovers (stock location)
1 DHD ntx-6200 crossover

Specifications: 1-Pioneer gmx924
• Continuous Power (20Hz-20kHz, 0.08% THD)
• 4 ch: (4 Ohm) 65Wx4
• 4 ch: (2 Ohm) 75Wx4
• 2 ch: (4 Ohm) 150Wx2
• Maximum Power (EIAJ)
• 4 ch: (4 Ohm) 130Wx4
• 2 ch: (4 Ohm) 300Wx2
• Frequency Response: 10Hz - 50kHz (0,-1dB)
• Total Harmonic Distortion: 0.003% (1kHz, 4 Ohm)
• Signal-to-Noise Ratio: 105dB (IHF-A Weighted, at 1kHz)
• Dimensions: 10" x 2-3/8" x 12-3/8"
Features:
• Bridgeable 2/3/4 Channel Capability
• 1-Ohm Stable Operation
• Class A Circuitry
• PWM Regulated MOSFET Power Supply
• Balanced Isolator Input Circuit
• Gold-Plated Screw-Type Power/Ground Terminals
• Gold-Plated Screw-Type Speaker Terminals
• Gold-Plated RCA Inputs (x2)
• Gold-Plated RCA Outputs
• Hi-Volt Input Level Control (400mV-6.5V)
• Top Mount Controls
• Variable Crossovers: 50-120Hz, -12dB/oct. (LPF/HPF) (Front &
• Rear Channels)
• Dual-Fan Cooling
• Illuminated Logo

Specs: H/U Kenwood Excelon DDX8017
• 6.5 inch Wide color TFT Active Matrix Display
• Motorized Slide-down Front Panel
• Interactive Touchscreen Control with GUI
• Audio Easy Control Mode while Playing Visual Source
• Selectable Wall Paper (5 Patterns)
• Installer/Backup Memory of Audio/Video Setup
• Maximum Output Power : 50W x 4 (MOSFET Power IC)
• Gold Plated 5.1ch Preouts with 5V Pre-output Level (Front/ Rear/ Center/ Subwoofer)
• 2 RCA AV Inputs/ 1 RCA AV Output
• Video Input for Rear View Camera
• RGB Input for Navigation System
• Dolby Pro Logic II / dts surround
• SRS WOW / Circle Surround Automotive
• 4 Band Parametric EQ/ Digital X'over/ Listening Position Control
• DVD Menu Direct Touchscreen Control
• MPEG 1/2 Video files (.mpg) and JPEG files (.jpg) Playback
• Dual Zone Source & Volume Control
• DVD±R/RW Compatible
• External Media Control - iPod Ready
• Satellite Radio Ready: Yes
• Preamp Voltage: 5 volts
• Subwoofer Preamp Outputs: Yes
• Maximum Power: 50 Watts
• DIN: 2
• Changer Control: Yes
• CD Text: Yes
• Built-in EQ: Yes
• CD-R/CD-RW Compatible: Yes
• Remote Control: Yes
• Detachable Face: No

Sony Subs
Details:
» 12" subwoofer with two 4-ohm voice coils » aluminum cone with rubber surround » five-sided cone design » power range: 80-400 RMS watts (200 watts per voice coil) » peak power: 1400 watts » frequency response: 18-2500 Hz » sensitivity: 89 dB » mounting depth: 5-7/8" » sealed box volume: 1.15 cu. ft. » ported box volume: 0.82 cu. ft.

Sony amp for subs
Amplifier Type
Mono Channel

Bass Boost
With Bass Boost

Bridgable
Not Bridgable
Power Output
RMS Power at 2 Ohms 900 W x 1

RMS Power at 4 Ohms 500 W x 1
Performance
Frequency Response 5 Hz - 300 Hz

Low - Pass Frequency 50 Hz - 300 Hz

Bass Boost Frequency 40 Hz

THD at Rated RMS Power .06 %
Dimensions
Width 13.69 in.

Depth 13.38 in.

Height 2.25 in.
Other Features
Input Voltage 10.5 volt

MOSFET amp Yes

3 Way Ready No
Warranty
Warranty 1 Year
Miscellaneous
MPN xm-ds1600p5

Product ID 21854544

Release Date 23 February, 2004

 

all I am going to suggest is that you change the amp/sub combo. Please give me a budget to work with on replacing that and we can spec you out something ALOT better than that part. I am not a fan of earthquake, but for the money they will do just fine for the components.

- Jim