When I purchased my Rockford Subs, the salesrep told me to go with 8ohm subs if I were going to run more than one on the same amp. He said that 2 4ohm subs would sound horrible. I ended up purchasing the 2 8ohm Rockfords. Is this true???

------------------
Y2K Satin Silver/Ebony 3.2TL
AEM SRI w/ custom CAI conversion | Magnaflow axle-back quad exhaust w/ modded downpipe | Neuspeed Sport springs(modded: 3.5"F/3"R drop) | Acura OEM Wing | Mesh grill | "Euro" Headlight finishers | Graphics by GBM | Acura Indiglo Emblem | Mugen badging | Body color door handles | Polarg M-12's/Eurolite Hyper Blue's | Opti-Blue Xenon High beams | Hiper Strobes | 20%/35% Llumar tint | Razo RA42 Shiftknob | Alloy pedals | Dual 10" Blue neons in bumper | 2 10" Rock.Fosgate Punch 2| Boss CLR60 600 watt 4 ch. amp | Escort Passport 7500

 

He's really suggesting that you wire the two 8-ohm speakers in parallel making it a 4-ohm load to the amp.

On most amps, 4-ohms mono is the most the amp can handle. A lot of higher-end amps however can handle 2-ohm mono (which you would get if you bought & wired the two 4-ohm subs). Also, the lower the ohms, typically the more wattage your amp will put out. Of course, it'll run a little hotter too.

Regarding the answer to your question, it really depends on the capabilities of your amp.

 

What do you mean by wiring it in parallel??? I have a 4 ch. amp and im running it bridged to 2 ch. Im running each sub on its own channel. Is this what you are talking about???

------------------
Y2K Satin Silver/Ebony 3.2TL
AEM SRI w/ custom CAI conversion | Magnaflow axle-back quad exhaust w/ modded downpipe | Neuspeed Sport springs(modded: 3.5"F/3"R drop) | Acura OEM Wing | Mesh grill | "Euro" Headlight finishers | Graphics by GBM | Acura Indiglo Emblem | Mugen badging | Body color door handles | Polarg M-12's/Eurolite Hyper Blue's | Opti-Blue Xenon High beams | Hiper Strobes | 20%/35% Llumar tint | Razo RA42 Shiftknob | Alloy pedals | Dual 10" Blue neons in bumper | 2 10" Rock.Fosgate Punch 2| Boss CLR60 600 watt 4 ch. amp | Escort Passport 7500

 

If you have a 4 channel amp bridged to run in 2 channel, you should've gotten 4 ohm subs.

Most people run subs with a 2 channel amp bridged. Parallel means both subs' speaker leads go to the same output on the amp, meaning it both run off the same bridged channel. I would suggest you to return your subs and get 4 ohm.

Lets say when you bridged your 4 channel amp into 2 channel, it puts out 100 watts a 4 ohm. If you run a 8 ohm sub, your amp will only put out 50 watts. If you run a 2 ohm sub, if you have a very very high quality amp, your amp might put out 200 watts.

------------------
Honda-Acura.net TL Forum Moderator.

1999 Silver with factory body kit, spoiler and burlwood instrument cluster and shift knob. Joshua Tree Wood dash kit. Hella air horns. Tint all around. Razo competition pedals. MOMO Sport 18"X7.5" with 225/40ZR Pirelli P7000SS. Weapon-R intake. Comptech springs, exhaust and headers. Inspire Tailights, homemade ram-air and Polarg M-12 front turn signals. Comptech front and rear sway bar. Axxis Metal Master front and rear pads. Mugen front grille. 2 Polk/MOMO 10" subs, Orion Xtreme 500.4 amplifier and Alpine CD changer.

My AcuraTL Homepage

NEW: '01 Acura MDX Silver Premium

Front 35% tinted windows. Running boards. Roof rack. Tailgate deflector. Moonroof visor. Rear mud guards. Razo premium white headlight bulbs. Matriz ion yellow fog light bulbs(courtesy of Snook). More to come later......

Acura-MDX.com Forum Moderator

 

I hope you didn't fail right out of high school physics. Running your wires in parallel, as apposed to a series circuit. In a series circuit you just wire everything up next to each other, on the same wire! Using a parallel circuit, you use multiple wires to wire everything together, basically they share power. They wire your house in parallel, just in case one light bulb blows out, all your other electrical appliances won't.

 

Well since you have a 4-channel amp bridged to two channels, then I agree with AcuraTL and get the 4-ohm subs instead.

Just curious, what kind of amp do you have?

 

I love all this electronics talk. I'm an electrical engineering major. We learn all this circuit analysis in school, but here's a real practical application for it.

Yup, never use a speaker setup with lower resistance than your amp can handle.

 

Ok, I returned the pair of 200watt 8ohm RF punch 2's and I purchased a pair of 400watt 4ohm RF Punch XLC's. Much cleaner and deeper bass

------------------
Y2K Satin Silver/Ebony 3.2TL
AEM SRI w/ custom CAI conversion | Magnaflow axle-back quad exhaust w/ modded downpipe | Neuspeed Sport springs(modded: 3.5"F/3"R drop) | Acura OEM Wing | Mesh grill | "Euro" Headlight finishers | Graphics by GBM | Acura Indiglo Emblem | Mugen badging | Body color door handles | Polarg M-12's/Eurolite Hyper Blue's | Opti-Blue Xenon High beams | Hiper Strobes | 20%/35% Llumar tint | Razo RA42 Shiftknob | Alloy pedals | Dual 10" Blue neons in bumper | 2 10" R.Fosgate RFP2410 XLC subs | Boss Audio CLR60 600wt. 4ch. amp | Escort Passport 7500