Using JBL 4410 3-Way crossover, trying to use PG 12" Dual 4-ohm

GX 1200W 1-Channel Monoblock Class D Amplifier - Phoenix Gold click on manual and download it

XS4300 SPECIFICATIONS:
Output Power: 4 ohm stereo @ 12/13.8 VDC 12/35 WRMS x 4 2 ohm stereo @ 13.8 VDC 75 WRMS x 4 4 ohm bridged @ 13.8 VDC 150 WRMS x 2 Crossover Frequencies 20Hz to 20kHz(Rnet factory set at 100Hz) Crossover Slopes 24dB per Octave

Watkins woofers are not a normal dual voice coil woofer. They are designed to be used with a special crossover that when one coil starts rolling off due to rising impedance the other takes over to extend the bass frequencies lower.

Looks like the woofer is a 4" Polyplas shielded driver, part #NS-W4SS, 4 ohms. If JBL can't supply a replacement try looking at Madisound or Partsexpress. Find a 4" 4 ohm woofer or mid-bass driver with a round frame. Check the actual measurements against your driver because not all "4 inch" drivers are the same size or bolt pattern. Make sure the depth will fit. You don't need "shielded" unless the speakers will be right up against a CRT (and nobody uses CRTs these days). Get a pair and replace both because the new driver certainly won't match the old.

Take a look at the Dayton Audio RS100-4 from Parts Express (or Amazon). The Hi-Vi M4N from Madisound "may" work but it is 8 ohms. http://www.jbl.com/resources/Brands/jbl/Products/ProductRelatedDocuments/en-US/TechnicalSheet/NSP1%20SAT%20ts.pdf

yes, but you would not get the same performance as you would if you gave them the suggested power. I have found that it is always better to use a more powerful amp than your subs are rated for (as long as it is clean, high quality, low distortion power). I have had the best luck with name brand amps (kicker,rockford fosgate,phoenix gold,etc...). I hope this will be helpful to you.

I have the following specs for you
Basically 150watts per channel using two channels , or 75watts using all four
Here goes:

• 4 Channel Mosfet Amplifier
• Advanced Overload and Thermal Protection
• Metal Film Capacitors/Resistors In Signal Path
• Frequency Response +/-1dB, 20Hz to 20 kHZ
• Signal to Noise Ratio (A-weighted) >100dB
• Max Continuous Bridged Power @ 1% THD 150 watts x 2 into 4 ohms @ 14.4 Vdc
• Max Continuous Power per Channel @ 1% THD 75 watts x 4 into 2 ohms @ 14.4 Vdc
• Nominal Continuous Power per Channel @ 1 % THD 35 Watts x 4 into 4 ohms @ 14.4 Vdc
• IASCA/USAC Power Rating 12 Watts x 4 into 4 ohms @ 12.5 Vdc
• Minimum Load when Bridged 2 Ohms
• Minimum Load per Channel 1 Ohm
• Input Signal Voltage Range 0.1 volts to 2 volts
• Crossover Type Resisitor Network, Linkwitz Riley,
• Highpass/Lowpass
• Crossover Slope 24 dB per octave
• Crossover Frequency Range 20-550Hz
• Factory Crossover Setting 85 Hz
• Auxilary Output Channels 2
• Auxilary Output Frequency Range Highpass or Lowpass, Opposite of Speaker Output
• Bass Boost 0- to +18dB @ 45 hZ
• Power Supply Voltage 10Vdc to 15.5Vdc
• Recommended Fuse 40 amp

Dimensions 12.25L x 9.25W x 2.10H

must be higher than a 12 or your not getting enough amp or watts as you can je

Hello damasogrizzl,

The 2 sets of terminals are connected internally. Having 2 sets just makes it more convenient when wiring multiple subs. The amp is rated for 900 watts RMS into a 2 ohm load. The specs claim that it is stable at 1 ohm but does not give a power rating.

The Radial SD competition series from Phoenix Gold are rated to handle up to 600 watts RMS. If you have the model RSdC124 with dual 4 ohm voice coils, it would be best to wire the voice coils in parallel for a 2 ohm load and connect the sub to one set of terminals on the amp. If your sub is the model RSdC122 with dual 2 ohm voice coils, you should wire the voice coils is series for a 4 ohm load and connect the sug to one set of terminals on the amp. Wiring the voice coils in parallel will result in a 1 ohm load. And, while the amp may be stable at 1 ohm, the sub will be seriously overpowered.

Hope this helps.

Hello gaz69,

Your PSW815 has 2 ohm dual voice coils allowing you to better match the impedance to your amp. Each voice coil is 2 ohms. If you wire them in parallel (both +'s together and both -'s together and then to the amp terminals), the sub presents a 1 ohm load which is too low for most amps. Wiring the voice coils in series (one + to the other - and the remaining + and - to the amp terminals) results in a 4 ohm load.

This link shows the wiring diagram for both options. If you know for sure that your amp is 1 ohm stable, use Wiring Option #1. If the amp is not 1 ohm stable, use Wiring Option #2.

Hope this helps.

Your speaker has dual voice coils. You can hook it up so that it is 2 ohm or 4 ohm depending on wat the amp can handle. You can try hooking it up by matching the colors or like any other speaker.