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LF18G401 vs L18P300-07 for 186

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Futendra View Drop Down
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    Posted: 01 April 2017 at 3:56pm
Which one would be the best bang for the buck? Would there be any noticeable difference? We would be making eight 186 horns.

The L18P300-07 is €269, and the LF18G401 is €229

L18P300-07:

General

  • Price: €269
  • Rated power: 1000 W RMS
  • Impedance: 8 Ohm
  • Frequency range: 35 Hz - 1000 Hz
Thiele/Small Parameters
  • Resonance frequency: 33 Hz
  • DC resistance: 5.0Ω
  • Mechanical factor: 8.3
  • Electrical factor: 0.34
  • Total factor: 0.33
  • BL Factor: 23.5 T · m
  • Effective Moving Mass: 180 g
  • Equivalent Cas air load: 226 liters
  • Effettive piston area: 0.113
  • Max. linear excursion (mathematical): 7.8 mm
  • Voice - coil inductance @ 1kHz: 1.9 mH
  • Half-space efficiency: 2.30%

LF18G401:

General

  • Price: €229
  • Rated power: 900 W RMS
  • Impedance: 8 Ohm
  • Frequency range: 35 Hz - 1000 Hz
Thiele/Small Parameters
  • DC resistance: 4.8Ω
  • Mechanical factor: 7.6
  • Electrical factor: 0.30
  • Total factor: 0.29
  • BL Factor: 24.6 T · m
  • Effective Moving Mass: 182 g
  • Equivalent Cas air load: 268 liters
  • Effettive piston area: 0.122
  • Max. linear excursion (mathematical): 8.5 mm
  • Voice - coil inductance @ 1kHz: 2.4 mH
  • Half-space efficiency: 3.09%
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corell View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote corell Quote  Post ReplyReply Direct Link To This Post Posted: 01 April 2017 at 4:14pm
Its a no brainer. The 18G401 beats the 18P300 by every means imo, being much newer.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Futendra Quote  Post ReplyReply Direct Link To This Post Posted: 01 April 2017 at 4:42pm
Originally posted by corell corell wrote:

Its a no brainer. The 18G401 beats the 18P300 by every means imo, being much newer.

So the budget option is also better? That sounds like music to my ears!
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Post Options Post Options   Thanks (0) Thanks(0)   Quote cookie-dj Quote  Post ReplyReply Direct Link To This Post Posted: 01 April 2017 at 6:31pm
The G401 is more suited to horn loading too, the P300 is a wicked reflex driver though.
You can't polish a turd!
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Post Options Post Options   Thanks (0) Thanks(0)   Quote fourway hornloaded Quote  Post ReplyReply Direct Link To This Post Posted: 08 May 2017 at 4:00pm
L18P300 used to be RCF's top of the range bass driver for a long time until it was superceded by the LF18G/X400. It has got a thick top plate to increase linearity and power handling, and ventilation holes in the back plate to the same purpose. It's still being made and now sold at a competitive price, compared to its successor, which has a higher voice coil winding.

LF18G401 is a budget driver. Some features have purposely been omitted to keep the price down. It lacks extensive ventilation, has a comparatively thin top plate and not much voice coil hight. That said, it's got a modern suspension like its larger siblings and a very high efficiency (because of the short coil).

I think it's hard to choose. It must be funny to spend extra money to obtain a driver that's actually older (LF18P300). The price of the L18G401 ist just unbeatable. On the other hand, guessing that you have certain expectations when building 8 bass horns, I'd consider using a driver with high power handling and especially, a greater voice coil overhang.



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