Excellent, can i run 4 speaker's from a 2 chanel amp ???
Yes you can....
The amp in question is bridgeable into a 4ohm load, which means each channel will drive loads as low as 2ohm, so 2X 4ohm speakers per ch connected in 'parallel' is possible.....But, connected in this fashion you would lose the ability to fade between front & rear....
I think i will have to keep it simple then and just run the sub on an amp and the 4 speaker's from the head unit !!!!
Possibly your easiest option, although if your head units pre-out is full range you may struggle due to limiting bass reproduction from the mids to attain higher volume....
Thank's for the adive matey the plan is now to scrap the 6x9's use the amp that i was going to use on the 6x9's on the front door speaker's and the other amp on the sub, will i be able to use a 200w amp on a pair of 140w speaker's ???
Cheer's Tony.
Possibly your best option given the equipment you currently have.....
With regards amp output power in relation to speaker input power;
Almost any amplifier can be used to drive any speaker, if the amps output power exceeds that of the speakers input power then its quite acceptable to simply run lower amp gain/sensitivity....
If the scenario is reversed, (amplifier output power is below speaker input power), then this extra speaker performance is simply lost....In laymans terms the speaker will never attain its full output volume....
You can't simply increase amplifier output by increasing gain, you will simply push the amplifier into 'clip'....
There is another option available if the Sony amps are capable of 'Tri-Mode' running....
This would involve running a stereo pair as normal in conjunction with a bridged sub from one amp, (2ch amp driving 3 seperate chs), the input to the sub would require a correctly rated resistor to act as a seperate Low Pass filter....
Now some questions.....
I manged to accuire the 6x9's and the bass box i'm under the impression the 6x9's will provide the volume and the bass box will provide the bass, how will i lose sound quality ???
A speaker reproduces sound in accordance with an electrical signal, in order to reproduce sound faithfully the speakers cone must be able to react/move naturally.....If movement is restricted or upset in any way then sound quality will suffer & excess heat build up in the speakers voice coils is possible....
6x9s mounted in a parcel shelf above a sub will react to each pressure wave generated by that sub, this will be in direct conflict with the natural cone movement required to maintain sound quality....The 6x9s cone will simply act as a 'passive radiator' if not being driven....This scenario will eventually lead to premature voice coil faliure....
On the back of the 13cm speaker's it say's 140w peak power and 40w rated does this mean the speaker's are only 40w???
Firstly you need to understand that each different manufacturer has its own rating system or testing technique with regards speaker input ratings....
The peak figure basically indicates the amount of electrical energy required to turn the voice coil into a molten wreck....Rather like a fuse blowing, a fuse rated at say 60 amps will be happy at 60amps, it would still be happy if supporting bursts of 100amps for short periods, but give it 130amps and it will blow instantly.....
The rated or RMS figure that everyone is quoting relates to the 'continuous' input power, but again this should, at best, be considered as a guide only.....
The RMS figure is achieved by playing a 'given' 0dB 'tone/sine wave' at a 'given' input power for a 'given' period of time....This time limit could be 1 minute, it could be 24hrs, it could also be levied against either speaker cone 'ex-max' or voice coil 'thermal handling' limits.....Getting too techy now I think....
So would it be worth running an amp with the 4x13cm speaker's ????
Its always best to use external amplification, flashy graphic displays, cd carriage & lens all suck power from the head units internal amp, lost amplifier power equates to lost quality/performance.....
You could spend a little time reading
This Thread which may or may not help you.....
