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View Full Version : Max/Peak/RMS etc etc etc...



Jcb
11-10-07, 06:03 PM
My HU is rated at 4x50watt, i want to replace the dash speakers, but can only find 10cm speakers at 30w RMS, does this mean the head unit would over power them, i.e. distorting them?

Iain
11-10-07, 06:06 PM
Are those speakers 30rms or rated 30w max?

Jcb
11-10-07, 06:08 PM
30 watt RMS or 100 watt max i think.

just found these however: http://caraudiosecurity.com/shop/product/products_id/7002.html

these are 50w RMS, am i right in thinking they would be perfect for a 50w channel headunit?

Iain
11-10-07, 06:21 PM
I thought headunits were 50w max output, if that is the case then the first speakers would be fine.

Jack
11-10-07, 06:29 PM
Don't expect FLI stuff to be any good. ?10 more will put you in the Alpine/Pioneer price range.

HU will probably be 50W max.

Jcb
11-10-07, 06:31 PM
ah right, so anything around 30W RMS will be ok?

I thought FLI were supposed to be really good? it's a 3way system aswell, surely that's a bonus?

Jack
11-10-07, 06:33 PM
3 way isn't necessarily good.

FLI are a budget brand IMO

dannyb
11-10-07, 07:23 PM
FLI are at the cheap end of even Halfords stuff. Get some of these for the same price, I bet they will sound better

http://cgi.ebay.co.uk/BRAND-NEW-PIONEER-TS-G1049-SPEAKERS-10cm-4-110-WATTS_W0QQitemZ110178291736QQihZ001QQcategoryZ1493 8QQssPageNameZWDVWQQrdZ1QQcmdZViewItem

bola
11-10-07, 08:06 PM
If i was you id just spend a little more and get proper vibe gear rather than their budget version, on ebay they would probably be about the same price as the fli speakers!

peester
12-10-07, 12:05 AM
i think the FLI speakers have an awesome sound for the money.. But; they are budget brand; so not always comparable to the Alpine etc etc..
30w RMS speakers should be fine with the 50w Max. headunit - still a little underpowered but a match enough..

Ash
12-10-07, 12:31 AM
Can I just point out that a '50w x 4' Headunit will give you about oooo 2.5watts RMS per speaker and distortion is caused by lack of control, which in course is due to a lack of power. Remember it's better to have more power and turn it down than matching and running flat out. Finally ALWAYS look at the RMS value, peak is a load of crap used for selling stuff.

EDIT: and Fli is owned by Vibe, so its a budget brand of a budget brand. ;)

Jcb
12-10-07, 03:25 PM
good to have input! thanks!

one more question... my nova had 4 speakers in it already, my recently installed parcel shelf 6*9s are simply wired to the rear speakers that were already there. it sounds bodgy. is this bad? am i halfing the power to the 6*9s?

Gibbo
12-10-07, 11:17 PM
i run all my speakers of amps better that way then ya cd player dont get has hot

carls nova sri
12-10-07, 11:38 PM
good to have input! thanks!

one more question... my nova had 4 speakers in it already, my recently installed parcel shelf 6*9s are simply wired to the rear speakers that were already there. it sounds bodgy. is this bad? am i halfing the power to the 6*9s?

have you disconected the standard rear speakers and used the wires for the 6x9s or are you using the standard speakers and 6x9s

Jcb
14-10-07, 04:44 PM
i'm using both, the 6x9s are literally jumped of the terminals on the oem speakers.

is this bad?

Clean 2.0 nova
14-10-07, 07:14 PM
Very very naughty. Instead of your head unit driving into 4 ohms, they will in your case be powering into 2 ohms of resistance. Get the original ones disconnected and sound should improve.

Jcb
14-10-07, 07:18 PM
the oem speakers are only 2ohms anyway? i have absolutely no idea about impedence... so i'll take your word for it. i'll take them out asap!

Jcb
15-10-07, 03:17 PM
oem speakers well and truly bypassed.

thanks guys.