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Which 15" speaker driver ?
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Tobie View Drop Down
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Joined: 30 June 2011
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    Posted: 15 April 2014 at 8:50am
The

18 Sound 15MB1000 8ohm 850watt High Output MB Ferrite Driver

£199.95

Specification

GENERAL SPECIFICATIONS

Nominal Diameter 380 mm (15 in)
Rated Impedance 8 Ohm
AES Power 850 W
Program Power 1200 W
Peak Power 3000 W
Sensitivity 98 dB
Frequency Range 45 ÷ 5100 Hz
Power Compression @-10dB 0,9 dB
Power Compression @-3dB 2,1 dB
Power Compression @Full Power 3,8 dB
Max Recomm. Frequency 1200 Hz
Recomm. Enclosure Volume 70 ÷ 150 lt. (2,47 ÷ 5,3 cuft)
Minimum Impedance 6 Ohm at 25°C
Max Peak To Peak Excursion 39 mm (1,53 in)
Voice Coil Diameter 100 mm (4 in)
Voice Coil Winding Material aluminum
Suspension Triple roll, Polycotton
Cone Curvilinear, Paper

or


18 Sound 15W750 8ohm 15" 600watt LF Ferrite Loudspeaker

£148.33


GENERAL SPECIFICATIONS
Nominal Diameter 380 mm (15 in)
Rated Impedance 8 Ohm
AES Power 600 W
Program Power 1200 W
Peak Power 2500 W
Sensitivity 97 dB
Frequency Range 50 ÷ 4300 Hz
Power Compression @-10dB 1,0 dB
Power Compression @-3dB 2,8 dB
Power Compression @Full Power 4,0 dB
Max Recomm. Frequency 1800 Hz
Recomm. Enclosure Volume 80 ÷ 140 lt. (2,82 ÷ 4,95 cuft)
Minimum Impedance 6,1 Ohm at 25°C
Max Peak To Peak Excursion 38 mm (1,50 in)
Voice Coil Diameter 75 mm (3 in)
Voice Coil Winding Material Aluminum
Suspension Triple-roll, Polycotton
Cone Curvilinear, high damping pulp


Is buying the more expensive one money well spent ? I know is only seems £50 more but i want to eventually buy 8 so that's and extra £400


or any other ideas on 15" cones with in that price range, they are going in a twin 15" opus cab about 1.2 M tall


Yes I have finally got around to buying some lol




Edited by Tobie - 15 April 2014 at 8:57am
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Points: 1845 		Post Options Post Options   Thanks (0) Thanks(0)   Quote all bass Quote  Post ReplyReply Direct Link To This Post Posted: 15 April 2014 at 9:08am
What purpose box are they supposed to go in and what frequency range should they cover? (sub)bass, midbass? 
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Tobie View Drop Down
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Ideally playing 40hz - 130 hz pal

Edited by Tobie - 15 April 2014 at 10:15am
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and sorry what do you mean Purpose box ?
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Of the two drivers you've selected I'd say the 15W750 is going to be more suited to the frequency range you're aiming to cover but will quickly run out of xmax. A quick check in WinISD suggests that neither will really give you a solid 40Hz.

For more sub-bass you may be better off looking at the 15LW1401 or 15LW2400 which are dedicated sub drivers. They would give you less SPL around 60-80Hz but a lot more in the 40-50Hz range. It depends what you're after.

What sort of music will you be playing and do you know the internal volume of the Opus box they are going in?




Edited by tomr_29 - 15 April 2014 at 1:40pm
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Tobie View Drop Down
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Points: 343 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Tobie Quote  Post ReplyReply Direct Link To This Post Posted: 15 April 2014 at 1:47pm
Hi no sorry i havent got any measurements for the box , well mainly DnB but also all sorts at the moment I have them playing at 40 - 130hz and my tops crossed at 125hz there quiet kicky my tops so thats fine


Edited by Tobie - 15 April 2014 at 1:49pm
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Points: 343 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Tobie Quote  Post ReplyReply Direct Link To This Post Posted: 15 April 2014 at 1:59pm
so yeh sub bass is what I am after as my tops do kick fine
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Points: 539 		Post Options Post Options   Thanks (0) Thanks(0)   Quote tomr_29 Quote  Post ReplyReply Direct Link To This Post Posted: 15 April 2014 at 3:17pm
What happened to the original Opus drivers? Just to check these are reflex bins we're talking about aren't they?

To work out which driver would give you the best performance its helpful to know the internal cabinet volume. This could probably be guessed close enough if you measure the external dimensions of the cab. IIRC Opus use 24mm ply. Re-tuning the cab to suit the replacement driver shouldn't be too difficult.
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Tobie View Drop Down
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Points: 343 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Tobie Quote  Post ReplyReply Direct Link To This Post Posted: 15 April 2014 at 5:29pm
yeh i'll measure the cab outside and get back to you, yes that are reflex, they are ATC drivers one is evidently blown, not a good look nor professional so need to replace that one at least, also altho they are quiet sought after by hi fi buffs the ATC do sound good and do shake most buildings they are in however they are only 400rms each so I need them louder, they are good solid cabs so I think that can take 2000K

also I aint too good with wood so I just would like to whack them in simple


Edited by Tobie - 15 April 2014 at 5:30pm
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Points: 820 		Post Options Post Options   Thanks (0) Thanks(0)   Quote DjLeco Quote  Post ReplyReply Direct Link To This Post Posted: 18 September 2014 at 10:37am
Try MB15N401 RCF, they are killing ones:
 
 
 


Edited by DjLeco - 18 September 2014 at 11:27am
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