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H/R118 by Startec

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The Builder View Drop Down
Old Croc
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Post Options Post Options   Thanks (0) Thanks(0)   Quote The Builder Quote  Post ReplyReply Direct Link To This Post Posted: 02 February 2011 at 11:42pm
Yes, I saw that.
Have four Xb's though.
It just is.
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B.A.M View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote B.A.M Quote  Post ReplyReply Direct Link To This Post Posted: 26 March 2011 at 12:50am
**Topic Rebirth**

I have similar questions. What, if any other drivers than the 18 Sound and RCF would work within this enclosure. RCF have released other 18" drivers since April 2007. Would one of these also meet the task in the 900 - 1200 watt range?

The T&T AK18DSW is an alternative, question is where can we get and information about them or buy them? Google only comes back with forum posts relating to them but never any mention of a company website or contact details.

The RCF LF18G401 900watt, lower power but on stats looks very similar.

**RCF LF18N401:

Thiele/Small Parameters
  • DC resistance: 5.1Ω
  • Mechanical factor: 6.5
  • Electrical factor: 0.27
  • Total factor: 0.26
  • BL Factor: 27.8 T · m
  • Effective Moving Mass: 201 g
  • Equivalent Cas air load: 257 liters
  • Effettive piston area: 0.122 m²
  • Max. linear excursion (mathematical): 8.8 mm
  • Voice - coil inductance @ 1kHz: 2.5 mH
  • Half-space efficiency: 3.01%
**RCF LF18G401:

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%

Has anyone else been working with these lately and what drivers have you been using? Would it be possible to provide a SPL vs Freq graph?

Edit:

For those looking for the Ande SB18-5 18"  - Currently £223.46 + shipping from Auz

http://www.jdsound.com.au/catalog_details.asp?ProdID=2266

Thiele/Small Parameters
  • Resonance Frequency Fs 35 Hz
  • DC resistance Re 5 ohms
  • Mechanical Factor Qms 9.21
  • Electrical Factor Qes 0.29
  • Total Factor Qts 0.28
  • BL Factor BL 24.3
  • Vas 249.4 L
  • Rp 86.0 ohm
  • Lp 76.6 mH
  • Cp 421.1 LF
  • Le 3.0 mH
  • MmS 148.8 gr
  • Xmax (+/-) 12 mm



Edited by B.A.M - 26 March 2011 at 1:22am
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rafaga View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote rafaga Quote  Post ReplyReply Direct Link To This Post Posted: 19 April 2011 at 11:25pm
Has anyone else been working with these lately and what drivers have you been using? Would it be possible to provide a SPL vs Freq graph?

PD 186 




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B.A.M View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote B.A.M Quote  Post ReplyReply Direct Link To This Post Posted: 20 April 2011 at 3:36pm
Lovely build by Rafaga and Hornmaster, I see your using a kick horn above them. I questioned this in one of my own topics and was shot down. After seeing the earlier graphs I still dont know how well this performs over the 115Hz Mark.


Edited by B.A.M - 01 June 2011 at 11:19pm
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rafaga View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote rafaga Quote  Post ReplyReply Direct Link To This Post Posted: 05 October 2011 at 8:09pm
Hello everyone.
Tell us what anyone uses the speakers except the RCF in this office??
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Pirlo Quote  Post ReplyReply Direct Link To This Post Posted: 06 October 2011 at 1:04am
Originally posted by rafaga rafaga wrote:

Hello everyone.
Tell us what anyone uses the speakers except the RCF in this office??

Why not use the driver the cab is designed for!? - Bad experiences?!?

Ask not only to do the point-finger-thing, thinking of build some by myself in the future...
Who the fu&k is Mr. Phanton, and why he has so much power!?
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Post Options Post Options   Thanks (0) Thanks(0)   Quote rafaga Quote  Post ReplyReply Direct Link To This Post Posted: 06 October 2011 at 6:03pm
because I was in Russia)))
who did not live here, he can not understand!
We have only one dealer of RCF, he brings order only, 100% prepayment, and to wait very long.
B & C's. Chiare. Faital pro. Bayma is available. kupmt easier.
so, and asked what can be replaced??
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rafaga View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote rafaga Quote  Post ReplyReply Direct Link To This Post Posted: 06 October 2011 at 6:05pm
/



Edited by rafaga - 06 October 2011 at 6:07pm
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Post Options Post Options   Thanks (0) Thanks(0)   Quote rafaga Quote  Post ReplyReply Direct Link To This Post Posted: 06 October 2011 at 6:08pm
Originally posted by B.A.M B.A.M wrote:

Lovely build by Rafaga and Hornmaster, I see your using a kick horn above them. I questioned this in one of my own topics and was shot down. After seeing the earlier graphs I still dont know how well this performs over the 115Hz Mark.

excellent mid-bass
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MarjanM View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote MarjanM Quote  Post ReplyReply Direct Link To This Post Posted: 07 October 2011 at 1:44am
B&C 18TBX100
Marjan Milosevic
MM-Acoustics
www.mm-acoustics.com
https://www.facebook.com/pages/MM-Acoustics/608901282527713
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Post Options Post Options   Thanks (0) Thanks(0)   Quote rafaga Quote  Post ReplyReply Direct Link To This Post Posted: 07 October 2011 at 6:10pm
phase inverter to work correctly?? on what parameters to select the speaker in the box?? I know how to build good boxes ... but have not yet learned how to design them.
Therefore, I ask your advice. Thanks for your help
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MarjanM View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote MarjanM Quote  Post ReplyReply Direct Link To This Post Posted: 07 October 2011 at 8:50pm
Why phase inverted? You should apply appropriate amount of delay on the rest of the boxes. That and the right crossover points.
As for the parameters, look for qts, fs, xmax, bl. That can tell enough if the driver is good for horn loading or not.
So B&C 18TBX100 is the one you need for those boxes if B&C is what you can get. That is as close to the RCF you can get.
Marjan Milosevic
MM-Acoustics
www.mm-acoustics.com
https://www.facebook.com/pages/MM-Acoustics/608901282527713
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