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rrlax24 · 23rd October 2006, 04:43 PM

I'm new to this whole car audio thing, I just need to know if a mono amp can run 2 subs or if it only runs 1. This may be a stupid question but i just need to know what to buy. thanks for any help

richie00boy · 23rd October 2006, 05:05 PM

The number of subs is irrelevant, what matters is the impedance load on the amp.

AndrewT · 23rd October 2006, 06:40 PM

Hi,
most car amps can drive a 4ohm load and some even lower.

Select your sub to suit your amp.
Car amps often perform quite badly on the lowest impedance in the specification.

It sometimes helps the sound quality to use a driver with twice the impedance quoted as the minimum. This reduces the power that comes from the amp, but this is often compensated by improved sensitivity of the higher impedance driver. i.e. using an 8ohm driver off a 4ohm amp might be just as loud and WILL sound cleaner.

BTW. be helpfull in your title!

23rd October 2006, 04:43 PM	#1
rrlax24 diyAudio Member Join Date: Oct 2006	Help Help Help Help Help I'm new to this whole car audio thing, I just need to know if a mono amp can run 2 subs or if it only runs 1. This may be a stupid question but i just need to know what to buy. thanks for any help

23rd October 2006, 05:05 PM	#2
richie00boy Did it Himself diyAudio Member Join Date: Nov 2003 Location: Gloucestershire, England, UK	The number of subs is irrelevant, what matters is the impedance load on the amp. __________________ www.readresearch.co.uk my website for UK diy audio people - designs, PCBs, kits and more

23rd October 2006, 06:40 PM	#3
AndrewT diyAudio Member Join Date: Jul 2004 Location: Scottish Borders	Hi, most car amps can drive a 4ohm load and some even lower. Select your sub to suit your amp. Car amps often perform quite badly on the lowest impedance in the specification. It sometimes helps the sound quality to use a driver with twice the impedance quoted as the minimum. This reduces the power that comes from the amp, but this is often compensated by improved sensitivity of the higher impedance driver. i.e. using an 8ohm driver off a 4ohm amp might be just as loud and WILL sound cleaner. BTW. be helpfull in your title! __________________ regards Andrew T.

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