4 ohms? 2 ohms? Which one?
 

Hey guys,

Just put in two Apline Type E 10's with a US Acoustics 450W amp... not spending too much money on sound now, saving for performance. Anyways, I'm currently running 150Wx2ch @ 4 ohms... but my amp can push 225Wx2ch @ 2ohms. It sounds alright now, but I know my speakers can handle more. Should I switch to 2 ohms? Whats is the difference and pro's & con's? Thanks!

Also, I have a sealed box now, but I listen to mostly rock, rap, and techno/dance. Should I make a ported one instead?

I think you mean type S ?!

which model sub exactly do you have?


in any case, the lowest you can go is 2ohm in stereo. So if you can wire your subs to that impedance then go ahead. But do not try wiring them to a 2ohm mono load. You're amp will slowly fry.

Do not port those subs. (that it be the S or the R..)

no there E's... i guess an older series

can you give me the specs on them, including voice coils?

or a link would be nice.

like accord man said, if you're going to do it, do it in 2ohm stereo. A bandpass box will make them louder, but the sealed will give you much cleaner sounding bass.

Apline Type E SWE-1041
Impedance - 4 ohm
Power Handling (RMS/Peak) - 200/600W
Freq Response - Fs~1jkHz
Sensitivity - 87 dB
D.C. Coil Resistance (Re) - 3.6 ohm
Inductance (Le) 1kHz/20kHz - 2.70mH/0.85mH
Free Air Resonance (Fs) - 33 Hz
Equivalent Stiffness - 33 L
X max/ X peak - 11.7 mm/23.4 mm
Mechanical Excursion (P-P) - 36mm
Gap/Coil Height (Hag/Hvc) - 10mm/33.4mm
Cone Area (Sd) - 339.79 cm^2
Diaphragm Material - Kevlar Reinforced Pulp
Spider Material - Nomex
Magnet Weight - 44.8 oz
Voice Coil Diameter - 38 mm
Displacement (Front Mount) - 0.061 ft^3
Displacement (Rear Mount) - 0.079 ft^3
Added Volume (reverse mount) - 0.056 ft^3
Recommended Sealed Box Volume - 0.6~1.25 ft^3

(Straight off Apline Sheet)

I presume they are single voice coil models.

in which case, you can wire them to 2 ohms mono, 8 ohms mono or 1 voice coil per channel (which is what you have, 4 ohms per channel).

If I was in your shoes, I'd leave it as is.. But you could try wiring to 2 ohms mono and see how well your amp takes it. But since you have one of their smaller amps, I dont think it'll be very durable.

However to maximize the sound, you could always work on the box and the placement/angle of the box. Crossovers are another thing that are worth looking at.

is the 2 ohm stable? if so try making it 2 ohms mono. with those speakers it is not possible to make it 2 ohms x 2 channels.
J

only 2ohm stereo..

so,

how do you know the amp is only 2 ohm stable in stereo? exactly which amp are you taking about?
J

its a US Acoustics USX2150 amp rated at 225Wx2CH RMS @ 2ohms @12.9V input. I've already wired it to 2 ohms, and so far I have no problems. It definitely hits harder due to the 150W increase, but my amp does overheat and cut off from time to time. So my friend and I are throwing some fans in for it, but do you guys have any suggestions to help keep it cool?

wire it a 4 ohms. :D

but at 4 ohms i lose 150W and it doesn't hit as hard. i like they way it sounds at 225W.

You do realize that its a bad when an amp overheats..

If you want your amp to last, and work properly, I do what I previously suggested..


But, if you'd rather have the extra power now, and live with the consequences later, well go for it.