Ok...a quick questions which kinda relates to SPL as well...but mainly SQ. What would be better for a SQ setup? A VNET 4100 runnig 4 speakers rated at 100RMS, or something like a Kicker 4x40RMS or a Coustic 4x40RMS? Do you want power...or don't speakers need the extra power? Does it make that much diff in volume?

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System:
Head Unit: Pioneer DEH-P7350 & Pioneer 6 Stacker
Front Stage: 5" 100w'ers
Rear Stage: JBL GTO 3Way 6x9"
Amplifier: Schneider 4x65RMS
Sub-wOOfer: 12" Kicker
Present Rattlers: Exhaust, spoiler, and probably a few others still to be found!!
Comin' Up: Clarion VNET 4100 Looking for another VNET 4100

Looking at your sig, I would be looking for a better quality 2 channel amp for front splits and not using a 4 channel to run rears as well, just HU power for rears in that set-up IMO (but then I don't like rear fill. That's personal, doesn't make me "right" as such).

Seems like you got enough amp channels already.....

40 watts per channel in a good amp is prob 50 watts (under-rating) and that's only 3db shy of 100 watts. If you play loud a lot, the 100 watts is good to have tho'.

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Mazda SP20 - NOT yellow,Dynamat Extreme and G Spot in front doors
HU - Alpine CDA-7876RB
Audison VRx 2.150EX front stage amp
JL Audio 500/1 Class D monoblock sub amp
Front Stage - Morel HCW 6.5 woofers, Morel MT2 tweeters, Morel MX2.2 x-overs.
Rear fill - stockies with power from HU (not that they get any)
Sub - Kicker S12L72 in 75 litre 30Hz slot-ported display box.
Stinger cables and connectors etc
TEAM AUDISON SQ WITH ATTITUDE

from the 3, i find that the coustic is the best sounding.


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'96 Mirage, currently resembling a tin can
uninstalled: Rockford RFX9300, Focal 165W3's Vrx 2.150 & 1.500
Power by: HERTZ audison OPTIMA StingerAerpro
TEAM AUDISON

im running two kicker IX404 4-channel amplifiers that power my entire system. im pretty serious about sound quality, so obviously i find them to be good performers especially at their price point the kicker IX series is under-rated by about 20% in terms of power, so they're an honest unit.

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Custom SQ System

Source: Clarion DRX-9675z - Front Stage: Boston Acoustics Pro 6.5's - Centre Channel: Boston Acoustics FS50 Midrange - Ambient Satellites: Boston Acoustics 3/4" Kortec Tweeters - Processors: Audiocontrol EQT's - Subwoofers: Earthquake BR12's - Amplifiers: Kicker IX404's - Power: Stinger 1 Farad HPM Capacitor
Sounding sweet and taking it to the street

if you're limited to those choices, i'd be recommending the coustic. you could always replace the VNET you have in the future for a nice coustic class D (if/when they are available in oz).

the jaycar offers good power, but from what i can gather, at the expense of clean power. some people have found a loud noisefloor of late.

the kicker impulse amps i believe are limited by the fixed xovers.

the coustic is excellent value like the kickers, but has variable xovers. will offer plenty of power for small speakers like yours.

i also like critter's suggestion to consider a nice 2-channel amp for that same price as the 4-channel. will probably snare something like a coustic 321SE 2x60WRMS amp which would be sweet.



coustic website

good luck

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/////ALPINE audison DYNAUDIO »»»morel polkaudio OPTIMA Stinger LIGHTNINGAUDIO

Issues of harassment, conflict, vindictive allegations, or unfairness, personal or observed, should be reported to me via Private Messages or at [email="shiny_car@caraudioaustralia.com"]shiny_car@caraudioaustralia.com[/email]

What I was going to originally do was get a dedicated sub amp and run the 4 speakers off a VNET 4100. But now i'm going more in SQ direction, and am thinking a good SQ amp for the front (i'm planning on a new set after HSC), and then running the sub and rears off the VNET. What do you think? But in SPL comps, the actualy SPL is only taken off sub frequencies isn't it?

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System:
Head Unit: Pioneer DEH-P7350 & Pioneer 6 Stacker
Front Stage: 5" 100w'ers
Rear Stage: JBL GTO 3Way 6x9"
Amplifier: Schneider 4x65RMS
Sub-wOOfer: 12" Kicker
Present Rattlers: Exhaust, spoiler, and probably a few others still to be found!!
Comin' Up: Clarion VNET 4100 Looking for another VNET 4100

sure is, SPl is only measured under 80Hz, if you're fronts are playing 80Hz and below, you REALLY need to HP them
even if they are playing 80Hz and below, they won't be making much noise in that area.

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'96 Mirage, currently resembling a tin can
uninstalled: Rockford RFX9300, Focal 165W3's Vrx 2.150 & 1.500
Power by: HERTZ audison OPTIMA StingerAerpro
TEAM AUDISON

quote:

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Originally posted by Provo:
now i'm going more in SQ direction, and am thinking a good SQ amp for the front (i'm planning on a new set after HSC), and then running the sub and rears off the VNET. What do you think?

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for SQ, a nice 2-channel will do the world of good for some matching quality splits.

the VNET4100 will thump a couple efficient subs pretty well. so it's a good value amp for that. maybe subs like the JL W0 series which are both musical for daily use, and should perform optimally for SPL with that amp.

i gather that's your approach rather than using a dedicated SPL sub that may sound aweful for music.

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/////ALPINE audison DYNAUDIO »»»morel polkaudio OPTIMA Stinger LIGHTNINGAUDIO

Issues of harassment, conflict, vindictive allegations, or unfairness, personal or observed, should be reported to me via Private Messages or at [email="shiny_car@caraudioaustralia.com"]shiny_car@caraudioaustralia.com[/email]

Thats spot on! I'm trying to get a balance between cost effective components and SQ... And I think i'm not doing too badly so far...jut a few little things to iron out

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System:
Head Unit: Pioneer DEH-P7350 & Pioneer 6 Stacker
Front Stage: 5" 100w'ers
Rear Stage: JBL GTO 3Way 6x9"
Amplifier: Schneider 4x65RMS
Sub-wOOfer: 12" Kicker
Present Rattlers: Exhaust, spoiler, and probably a few others still to be found!!
Comin' Up: Clarion VNET 4100 Looking for another VNET 4100

How about bridging 2 chans on a coustic 4 chan? To give 120RMSx2 for the fronts? Will SQ Go down significant ammounts? How are Coutsic compared to Hertz amp SQ?

Edit: Here are the stats for the one i'm looking at. Coustic 321. How will SQ be with the briged chans? @0.2THD?
Rated Power @ 14.4 V (0.1 % THD) 4 Ohm Stereo 4 x 40 Watts
Rated Power @ 14.4 V (0.1 % THD) 2 Ohm Stereo 4 x 80 Watts
Rated Power @ 14.4 V (0.2 % THD) 4 Ohm Mono 2 x 160 Watts

Edit2: I'm assuming that I would never have to use all of the power anyways! So I would never be able to get anywhere near 0.2...right...?

Edit3: Or even how about an Alpine Amp? A MRV-T503 Or other v12 serires amps?
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System:
Head Unit: Pioneer DEH-P7350 & Pioneer 6 Stacker
Front Stage: 5" 100w'ers
Rear Stage: JBL GTO 3Way 6x9"
Amplifier: Schneider 4x65RMS
Sub-wOOfer: 12" Kicker
Present Rattlers: Exhaust, spoiler, and probably a few others still to be found!!
Comin' Up: Clarion VNET 4100 Looking for another VNET 4100


[Edited 1 time by Provo on 16 September 2002 at 20:29]

some people find bridging amps for splits (where you are more likely to hear any difference compared with subs) produces a very slightly 'different' sound, neither better or worse. it will depend on the quality of the splits i gather as to whether they'd 'reveal' a difference.

i'm a purist, and prefer never to bridge an amp for splits. but there's merit in doing it for the added power.

however, for the price of a 4-channel, i'd always go the better 2-channel.

unless you're running very fussy, power hungry splits (which tend to only be audiophile splits), then you won't need heaps of power, and 40WRMS is plenty. and a 2x60WRMS amp will be great.

the V12's IMHO are better again than the coustics. they have plenty of grunt coz they're very underrated powerwise. a T503 is rated at 2x50WRMS into 4ohm at 12V, but in reality you would have close to 100WRMS per channel at ~14V, easy. my alpine 2-channel amps are 50~60% underrated according to the birthsheets.

hope this helps.

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/////ALPINE audison DYNAUDIO »»»morel polkaudio OPTIMA Stinger LIGHTNINGAUDIO

Issues of harassment, conflict, vindictive allegations, or unfairness, personal or observed, should be reported to me via Private Messages or at [email="shiny_car@caraudioaustralia.com"]shiny_car@caraudioaustralia.com[/email]