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#1 (permalink) Old 11-07-2004, 09:31 PM
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I just sold off my old stereo, 2 12" Alpine R Type subs, and have decided one sub is more than enough. Alpine and Eclipse stand out as two of the better sub makes-with the exception of the ones that would force me to sell my BMW to afford. Alpine's newest sub, the X Type is pretty impressive.
Specs For Alpine X Type
Diaphragm Material : Carbon Fiber/Aluminum Honeycomb/Kevlar Reinforced Pulp
Magnetic Weight : 130oz.
Mounting Depth (top mount) : 218 mm (8.6")
Mounting Diameter (top mount) : 231 mm (9.1")
Recommended Box Types : Sealed/Vented/Bandpass
Recommended Sealed Box Volume : 0.75 – 2.0 cu. ft.
Spider Material : Nomex®
Voice Coil Diameter : 75 mm (3")
Power Handling Capacity (Peak) : 3000W
Power Handling Capacity (RMS) : 1000W
Coil Height (Hvc) : 48.1mm
Cone Area (Sd) : 529sq. cm
D.C.Coil Resistance (Re) : 3.6ohm + 3.6ohm
Electrical Q (Qes) : 0.69
Equivalent Suspension Stiffness (Vas) : 32liters(1.1cu.ft.)
Free Air Resonance (Fs) : 28Hz
Frequency Response : 23Hz - 200Hz
Gap Height (Hag) : 10mm
Impedance (Nominal) : 4ohm + 4ohm
Linear Excursion (X linear) : 19.1mm
Maximum Excursion (X peak) : 22mm
Mechanical Excursion (Peak-to-Peak) : 75mm
Mechanical Q (Qms) : 8.67
Sensitivity : 83dB/W/M
Total Loudspeaker Q (Qts) : 0.64
4-Layer 220ºC High Temp Wire with Inner/Outer Winding on Twin-Wall Brass Former
Carbon Fiber/Aluminum Honeycomb Parabolic Cone
Custom Cast Aluminum Frame
Designed and Engineered in the USA
Dual Voice Coil Design
FEA Optimized CRC T-Drive Motor Structure with Copper Shorting Sleeve & Heat Transfer Technology
FEA Optimized Hhigh Excursion Injected Santprene® Multi-Roll Surround
FEA Optimized High Excursion Injected Santoprene® Surround
FEA Optimized Mirrored Progressive Nomex® Spiders with Integrated Tensil Leads
Gold Plated Insert Terminal Block with VC Jumpers
Hidden Screw Gasket
Integrated Spider Landing and Heat Transfer Plate
Massive Triple Stacked Strontium Magnets
Multi-Stage Ventilation System (Dual Flare Pole, Spider Plateau & Frame Leg Venting, Cone/VC Junction Venting
One-Sided Terminal Layout

Most of that is non-important and way over most peoples heads, but for you who know subs hopefully you can decide which is better based on the info.
The other sub is Eclipse's Titanium Series
Polyether Surround
Solid Titanium Cone
Dual Mirror-Image Spiders
Aluminum Voice Coil Former
"Bottomless" Design
Aero-Vented Pole Piece
Cast Aluminum Frame
Triple-Stacked Magnet
Small Sealed-Box Enclosure
Continuous Power Handling: 750W
Music Power Handling: 1,500W
Dual Voice Coil
QCA (Quick Change Assembly)
3diameter voice coil
250oz, magnet motor

Not quite as much info as the Alpine but that's all Eclipse's website has. If anyone has any experience with either sub or has researched/read anythin about either i would much appreciate the info. Thanks-Wade
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#2 (permalink) Old 11-12-2004, 12:09 AM
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Yes one sub is plenty for most people, I still don't understand why so many people insist on buying two.

Your two choices listed are pretty but neither company are known for their subs. Either would be fine as they are reputable manufacturers, but I would recomend Kicker (SPL) or Infinity(SQ) as they are known for making great subs.

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