1850 and 186 horns - LF18G401 vs L18P300-07 for 186

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LF18G401 vs L18P300-07 for 186

Printed From: Speakerplans.com
Category: Plans
Forum Name: 1850 and 186 horns
Forum Description: Discussion / Questions about the 1850 and 186 horns
URL: https://forum.speakerplans.com/forum_posts.asp?TID=98193
Printed Date: 20 April 2024 at 8:12am
Software Version: Web Wiz Forums 12.06 - https://www.webwizforums.com

Topic: LF18G401 vs L18P300-07 for 186

Posted By: Futendra
Subject: LF18G401 vs L18P300-07 for 186
Date 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 m²
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 m²
Max. linear excursion (mathematical): 8.5 mm
Voice - coil inductance @ 1kHz: 2.4 mH
Half-space efficiency: 3.09%

Replies:

Posted By: corell
Date Posted: 01 April 2017 at 4:14pm

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

Posted By: Futendra
Date Posted: 01 April 2017 at 4:42pm

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!

Posted By: cookie-dj
Date Posted: 01 April 2017 at 6:31pm

The G401 is more suited to horn loading too, the P300 is a wicked reflex driver though.

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You can't polish a turd!

Posted By: fourway hornloaded
Date 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L18P300 used to be RCF's top of the range bass driver for a long time until it was superceded by the LF18G/X400.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.