What do you get when you combine high quality materials, state-of-the-art engineering, and a liberal dose of Rockford Fosgate's famous bass fanaticism? The answer: Power Stage 2 subwoofers. Ideally suited for use with Power Series amps, these woofers handle incredible power levels — up to 2,000 watts peak.
The mind-blowing 304-ounce magnet structure is triple stacked, and the huge 4" voice coils were born to handle big power. The aluminum parabolic cone with its high-excursion rubber surround hits quickly and accurately. Spider venting keeps the woofer cool even when you run it long and hard.
The T215D2 15" subwoofer works best in a vented enclosure. The dual 2-ohm design lets you wire for high output or a multiple woofer setup.
Note: If you are wiring this DVC sub for lower impedance, make sure that your amp is compatible. Most car amplifiers are stable down to 2 ohms in standard mode, or 4 ohms in bridged operation.
Details:
15" subwoofer with dual 2-ohm voice coils
aluminum parabolic woofer cone with rubber surround
cast aluminum basket
power range: 150-1,000 watts RMS (500 watts per voice coil)
"The design is fairly clean overall. Connections are made by removing the fascia shield via the 2 allen head screws allowing access to the terminal strips for connections. The first thing I noticed is the weight. This amp is light. Meaning, there can't be that much inside for a clean performer. Sure enough, this is a plane jane stripped down amp, with limited MOSFETS.
Here's the specs:
Class D Mono Power Amplifier
K-STAT technology
Dual sigma drive
Dual power supply with two transformers
Maximum Output Power: 1200 Watts
RMS Power 4-Ohm: 300 Watts x 1 (20-200Hz, 0.5%THD)
RMS Power 2-Ohm: 600 Watts x 1 (100Hz, 0.5%THD)
RMS Power 1-Ohm: Over 600 Watts x 1
Signal To Noise Ratio: 80dBA (Ref:1 Watt into 4Ohm)
Infrasonic Filter: 15Hz, 25Hz, -24dB/oct
Bass Bosost ready (Wire remote): 40Hz-100Hz, 0dB-+18dB
Low Pass Filter: 40-200Hz (Variable), -24dB/oct
OK... Now for the truth. CEA 2006 rating is 1% THD. Meaning it's a Loose noise monster. Secondly...Where's the second power transformer... There sure isn't one on the board. Lastly, do the math. 40A fuse X 13.8V = ~552W peak load before the fuse pops. Generally, this formula works for class AB the best. Digital amps are more efficient. Based on the number of Mosfets...there's no way this amp is getting near 800 or 1200 watts.
This looks like a revised layout from the older KAC series amplifiers, with near identical componentry. There is so much sparce space on this amplifier board, there's no reason to have the heat sink this large. The other thing I observed... is the solder joints on the MOSFETS on the amplifier side of the board looked relatively poor and high in flux.
Under high load, I would expect a failure condition.
If your looking for just cheap sound reinforcement and not worried about quality, then pick this one up. If your looking for Better Regulated, true digital class D, and better overall circuitry...look on to either Xtant (before their MTX aquisition), JL, or Directed."
What do you get when you combine high quality materials, state-of-the-art engineering, and a liberal dose of Rockford Fosgate's famous bass fanaticism? The answer: Power Stage 2 subwoofers. Ideally suited for use with Power Series amps, these woofers handle incredible power levels — up to 2,000 watts peak.
US $117.00
