SocialMisfit

Hi,

Quick question. I'm installing one 12" woofer into my trunk running off a monoblock. Do I want a dual voice coil on that woofer and what if any are the positives and negatives to a dual voice coil over a single voice coil when used in a single sub setup?

Thanks!!

d4rin

Hmm I am not sure if it really matters, It just give you more options...

JohnVroom

the dual voice coils give the option of doubling the impedance or halving the impedance of a single coil, with the goal of maximizing the output of the system. The amps capabilities are key here, and the woofers impedance is also key.

DeadlySones

iTrader: (4)

Without knowing what "monoblock" amplifier its hard to say what coil config you should go with.

jalat

iTrader: (6)

exactly.

what subwoofer/amp are you planning on running?

SocialMisfit

Sorry, haven't been around the last few days to reply.

This is the sub I'm running:

Polk Audio SR124-DVC (available in single voice coil)
12" Dual 4 ohm Signature Reference Series Subwoofer
Power Handling:
700 watts RMS
1400 watts Peak
Impedance: Dual 4 ohm
Dual 4 ohm voice coil
2.5" glass/epoxy voice coil former
Dual progressive roll spiders
ABS cone
Butyl rubber surround
Hex-key terminals
Frequency Response: 20 Hz - 200 Hz
Sensitivity: 89 dB

And the amp I'm running:

JL Audio XD600/1
XD Series Monoblock Class D Car Amplifier
RMS Power Rating (14.4V):
4 ohms: 400 watts x 1 chan.
2 ohms: 600 watts x 1 chan.
RMS Power Rating (12.5V):
4 ohms: 300 watts x 1 chan.
2 ohms: 500 watts x 1 chan.
Unregulated MOSFET switching type power supply
NexD Ultra-High Speed Class D topology
LED power (green) and protect (red/yellow) indicators
State-of-the-art microelectronic components
Mono channel operation
Advanced Thermal Rollback System completely eliminates annoying thermal shut-down events
Studio-grade signal processing with fully variable crossover filters
Extruded aluminum alloy system setting security cover
Total amplifier efficiencies exceeding 80%
Noise-killing, highly flexible differential-balanced inputs
Preamp RCA outputs to daisy chain multiple amps
Defeatable low-pass and infrasonic crossover filters
Dual speaker terminals simplify speaker installation
3-Way System Protection circuitry (thermal, overload, and speaker short protection)
Heavy duty compact unitary cast alloy heat sink for extreme heat dissipation
Silver-plated RCA level inputs
Silver-plated screw terminals
Input sensitivity:
Level: 100mV-4V
Variable low-pass filter (50-500 Hz, 12 dB/octave Butterworth or 24 dB/octave Linkwitz-Riley)
Infrasonic Filter (30 Hz, 24dB/octave Butterworth)
Damping factor: >1,000 @ 4 ohms / 50Hz
Frequency response: 7-500 Hz
Dimensions: 8-1/2"L x 7-1/16"W x 2-1/16"H


Just a note: On the Polk Audio website a few customer reviews mention that the sub is over-rated a bit powerwise, hence the reason I picked the 600W monoblock. I don't want to overdrive and cook the sub.
By the rms ratings my guess would be get the dual voice coil so I can split the impedence down to 2 ohm to take advantage of higher output from the amp.

If this is correct my other question would be about the recommended voltages. I plan to buy a second battery for the trunk and I suppose I need a distribution block. Will this allow me to run the amps at 14.4V continuously?

This is all pretty new to me. Thanks for the help.