i dont know much about car audio so i was looking for some ideas.
i have a pioneer DEH-5650 MP hu
what kind of setup of spekers would go good with my head unit?
my budget is fairly low to.

Its been said alot of times before, your better off saving your money and buying quality components. What kind of setup are you going for? Fairly basic with a couple of sets of speakers running straight off the head unit, or are you thinking of going the amplifier, sub route?

As far as deciding on basic speaker construction, I recomend 6.5 inch splits for the doors, and if you want to run the speakers straight off your HU then some 6x9's for the rear, as this will provide some bass and basic rear fill, (don't expect huge wads of Bass though). The best part of this setup is the bolt-in factor, as in general with these speaker sizes in the 3rd gens, no new holes need to be cut, although chances are you'll have to drill new holes for the screws.

As far as brands go, I have some pioneer blade 6.5 inch splits (RRP $399) and Im very happy with the sound they produce. I also think blake (aussiemagna) has these same splits and is very happy with the sound. I've heard alot of good things about eclipse speakers also. Best bet is to have a listen to the speakers on the sound boards at any car audio store. Find what you think sounds best, and go from there. And if you are planning on going down the amp/sub road, be prepared to spend a few more dollars and to make alot more choices. Although in my opinion the above setup is the optimal setup for a simple HU powered setup, as in HU running 2 sets of speakers.

mate i am currently runni na set of kicker k 6.2s the bet speakerds i haev ever heard so clear and they go staright in the holes can highly recomend them

Here are some choices that we have had succuss with in the past:

System Cost: $500
Source Unit(s): Alpine CDM-9821 / Pioneer DEH-P2650 / Clarion DXZ546MP
Rear Speaker(s): Hertz ECX 690 / Phoenix Gold R69.0Coax / Vibe SR-69

System Cost: $1000
Source Unit(s): Alpine CDA-9823 / Pioneer DEH-P4650MP / Clarion DXZ646MP
Front Speaker(s): Boston FS-60 / Diamond M361 / Hertz HSK 165 / Phoenix Gold R6.5 Comp / Vibe SA-60
Amplifier(s): Alpine MRP-F200 / Audison SRx2 / Phoenix Gold R2.5:2
Cable: Stinger / Phoenix Gold / Audison
Deadening: G-Spot Serenity Max / Stinger Roadkill / Dynamat Pro

System Cost: $2000
Source Unit(s): Alpine CDA-9827 / Pioneer DEH-P5650MP / Clarion DXZ746MP
Front Speaker(s): Boston RC620 / Diamond M361 / Hertz HSK 165 / Rainbow CMX 265 Kick / Morel Pulse / Phoenix Gold ZR6.5 Comp / Vibe ST-60 / Eton Pro-160X
Sub(s): JL Audio 12W0-4 / Image Dynamics ID12V.3 / Diamond M312 / Hertx HX 300 / Boston GS1204 / Phoenix Gold R12D / Digital Designs 2012 / Vibe BlackAir-12
Amplifier(s): Audison SRx3 / Phoenix Gold R8.0:4
Cable: Stinger / Phoenix Gold / Audison
Deadening: G-Spot Serenity Max / Stinger Roadkill / Dynamat Pro

System Cost: $5000
Source Unit(s): Alpine CDA-9833 / Pioneer DEH-P7550MP / Clarion DXZ946MP
Front Speaker(s): Kicker RS6 / Boston Pro6.5 / Diamond M661 / Focal Polyglass 165V2 / Hertz HSK 1600 / Rainbow CS 265 Profi Vanadium Kick / Morel Dotech Mk II / Phoenix Gold X6.5 / Eton RS-160
Sub(s): JL Audio 12W3 / Image Dynamics IDQ12D4.V2 / Diamond M312 / Focal 33A / Hertx HX380 / Phoenix Gold X12D / Digital Designs 2512 / Vibe Space-12
Amplifier(s): 2 x ARC Audio 2100XXK / 2 x Audison SRx2S / Zapco 350 & Zapco 500M / Boston GT20 & Boston GT22 / Tru-Tech T-4.65 & Tru-Tech T-2.100 / Phoenix Gold R4.0:2 & Phoenix Gold R5.0:1
Cable: Stinger / Phoenix Gold / Audison
Deadening: G-Spot Serenity Max / Stinger Roadkill / Dynamat Pro

System Cost: $10000 (SQ system)
Source Unit(s): Nakamichi CD-700 / Alpine CDA-7998 / Pioneer DEH-P1Y / Clarion HXD2
Processor(s): Precision Power DEQ-230 / Phoenix Gold Ti EQ30
Front Speaker(s): Boston Pro6.5.3 / Image Dynamics CXS 64 / Diamond S600 / Focal 165W / Rainbow CS 265.28 Platinum / Morel Elate 6 & Supremo / DynAudio System 240GT / Phoenix Gold X6.5 / Eton A2-160
Sub(s): JL Audio 12W6V2 / Image Dynamics IDQ12D4.V2 / Boston 12.5LF / Diamond M612 / Focal 33KX / Adire Brahma / Phoenix Gold X12D / Digital Designs 3512
Amplifier(s): ARC Audio 2100XXK & ARC Audio 2500XXK / Audison LRx4.300 & Audison LRx1.400 / Zapco 750 & Zapco 1100M / Boston GT24 & Boston GT28 / Tru-Tech T03-4.150 & Tru-Tech T03-2.250 / Phoenix Gold X200.2 & Phoenix Gold X1200.1
Cable: Stinger / Streetwires / Audison / QED
Deadening: G-Spot Serenity Max / Stinger Roadkill / Dynamat Pro

System Cost: $10000 (A/V system)
Source Unit(s): Alpine IVA-1003E / Toshiba SD-1300 / Pioneer AVH-P6650DVD / Clarion VRX935VD
Processor(s): Precision Power DEQ-230 / Phoenix Gold Ti EQ30
Front Speaker(s): Boston Pro6.5.3 / Image Dynamics CXS 64 / Diamond S600 / Focal 165V2 / Rainbow CS 265.28 Platinum / Morel Elate 6 / DynAudio System 240GT / Phoenix Gold X6.5 / Eton A2-160
Center Speaker(s): Kicker R4 / Boston FX4 / Phoenix Gold R4.0 Coax
Rear Speaker(s): Hertz ECX-165 / Phoenix Gold R6.0 Coax
Sub(s): JL Audio 12W6V2 / Image Dynamics IDMAX12V.3 / Boston 12.5LF / Diamond M612 / Focal 33KX / Adire Brahma / Phoenix Gold X12D / Digital Designs 3512
Amplifier(s): ARC Audio 2100XXK & ARC Audio 2500XXK / Audison LRx4.300 & Audison LRx1.400 / Zapco 750 & Zapco 1100M / Boston GT24 & Boston GT28 / Tru-Tech T03-4.150 & Tru-Tech T03-2.250 / Phoenix Gold X200.2 & Phoenix Gold X1200.1
Cable: Stinger / Streetwires / Audison / QED
Deadening: G-Spot Serenity Max / Stinger Roadkill / Dynamat Pro

System Cost: $20000 (SQ system)
Source Unit(s): Nakamichi CD-700 / Alpine CDA-7990 / Pioneer DEH-P9450MP / Clarion HXD2
Processor(s): Alpine PXA-H701 / Precision Power DEQ-230 / Phoenix Gold Ti EQ30
Front Speaker(s): DynAudio System 360 / Boston Z6 / Focal 165W3 / Rainbow CS 265.30 Reference / Morel Elate 9 & Supremo / Phoenix Gold Ti 6 Comp Elite / Eton D160 SQ
Rear Speaker(s): Kicker R6.2 / Boston RC620 / Hertz HSK 165 / Rainbow SLX 265.03 / Phoenix Gold X6.5
Sub(s): JL Audio 12W7 / Image Dynamics IDMAX12V.3 / Boston 12.5LF / Diamond TDX 12 / Focal 33WX / Adire Brahma / Phoenix Gold Ti 12D Elite / Digital Designs 9512
Amplifier(s): ARC Audio 2500XXK & ARC Audio 4000XXK / JL Audio 300.4 & JL Audio 1000.1 / Audison VRx1.500 & Audison VRx4.300 / Zapco C2K-6.0x & Zapco C2K-9.0xd / Boston GT24 & Boston GT28 / Tru-Tech C-7 & Tru-Tech C7.2 / Phoenix Gold X200.2 & Phoenix Gold X1200.1
Cable: Stinger / Streetwires / Audison / QED
Deadening: G-Spot Serenity Max / Stinger Roadkill / Dynamat Pro

System Cost: $20000 (A/V System)
Source Unit(s): Alpine IVA-D900E, Alpine DHA-S680E / Pioneer AVX-P7300DVD / Clarion VRX935VD
Processor(s): Alpine PXA-H701 / Hardon Karmon DTS decoder / Rane EQ / Phoenix Gold Ti EQ30
Front Speaker(s): DynAudio System 360 / Boston Z6 / Focal 165W3 / Rainbow CS 265.30 Reference / Morel Elate 9 & Supremo / Phoenix Gold Ti 6 Comp Elite / Eton D160 SQ
Center Speaker(s): Kicker R4 / Boston 4.5LF / Phoenix Gold X6.5
Rear Speaker(s): Kicker R6.2 / Boston RC620 / Hertz HSK 165 / Rainbow SLX 265.03 Platinum / Phoenix Gold X6.5
Sub(s): JL Audio 12W7 / Image Dynamics IDMAX12V.3 / Boston 12.5LF / Diamond TDX 12 / Focal 33WX / Adire Brahma / Phoenix Gold Ti 12D Elite / Digital Designs 9512
Amplifier(s): ARC Audio 4150XXK & ARC Audio 4000XXK / Audison VRx6.420 / Zapco C2K-4.0x & Zapco C2K-9.0xd & Zapco C2K-2.0x / Boston GT50 & Boston GT28 / Tru-Tech C-7 & Tru-Tech C7.2 / Phoenix Gold X200.2 & Phoenix Gold X200.4 & Phoenix Gold X1200.1
Cable: Stinger / Streetwires / Audison / QED
Deadening: G-Spot Serenity Max / Stinger Roadkill / Dynamat Pro

I love when you post stuff like that, fhrx.. it makes me realise just how puny my setup really is :P

I went with some Boston FS-60 splits, a Diamond M312 sub and one of those Audison SRx3 amps, hooked up to the JVC SH9105 head unit that I already had. It sounds great! But it also cost me around the $1500 mark (ex. head unit).

I'd recommend going the amp/sub route if you can afford it. I drove around for about a week with just my splits and the factory 6x9s before I put the sub in and it sounded hollow by comparisson.

Hey, nothing wrong with the system you have there! :D