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What does the panel think of THIS then ?
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slaz View Drop Down
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    Posted: 23 February 2012 at 11:11am
...... yeah - our favourite brand :-)

http://www.bluearan.co.uk/index.php?id=EVNL034

OK, OK, but .... from a brand that usually puts power handling as "think of a number and stick a coupla zero's on the end" .... but not in this case eh ?

If that efficiency rating were to be anything LIKE real ..... whoah :-)

Could actually be maximum SPL I spose :-)

Leads me to ask the panel something I've wondered for a while though .... is it actually POSSIBLE to increase efficiency by sacrificing (lots of) power handling ? e.g. using fine gauge VC wire and having lots of turns ?
REMEMBER....POLITICIANS AND DIAPERS SHOULD BE CHANGED OFTEN AND FOR THE SAME REASON
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Points: 2437 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Disco Stu Quote  Post ReplyReply Direct Link To This Post Posted: 23 February 2012 at 6:29pm
It doesn't specify at what frequency that was measured, therefore its largely irrelevant.... one thing you can be sure of, its not 50Hz.

102dB would be achievable at 1kHz-ish if the speaker has a rising response like a lot of the cheaper eminence ranges do. 

This one has 101dB at 2.5kHz but only 83dB at 50Hz http://www.eminence.com/pdf/Basslite_S2010.pdf

Stu


Edited by Disco Stu - 23 February 2012 at 6:30pm
All you need to know is:
Sensitivity + Power Handling - Power Compression = Max Output

My acts:
www.myspace.com/thebowiexperience
www.myspace.com/scheisseelektronisches
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Points: 1039 		Post Options Post Options   Thanks (0) Thanks(0)   Quote TechnoChef Quote  Post ReplyReply Direct Link To This Post Posted: 23 February 2012 at 7:34pm
Maybe they're factoring into the sensitivity the fact that for £12 each people might as well buy four of them, wire them series-parallel and pretend it's still just one cone!

(in fact, I might get myself four of those and another ta2020 for the shed soundsystem!)
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Points: 1257 		Post Options Post Options   Thanks (0) Thanks(0)   Quote infrasound Quote  Post ReplyReply Direct Link To This Post Posted: 23 February 2012 at 7:44pm
£12 a driver is fairly ridiculous..

Tempted to add one onto my next order for the hell of it. Realised last week that their trade counter is just down the road from me, no more shipping costs Thumbs Up
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Nitz V1505 View Drop Down
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20w power handling, WTF were they thinking? 
LET THE BASS ROLL LIKE THUNDER
& THE TOPS LIKE LIGHTNING.....
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Points: 890 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Pasi Quote  Post ReplyReply Direct Link To This Post Posted: 23 February 2012 at 8:10pm
Originally posted by Nitz V1505 Nitz V1505 wrote:

20w power handling, WTF were they thinking? 


That's ok for bass amp, where that driver is most likely intended.
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audiomik View Drop Down
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Points: 1747 		Post Options Post Options   Thanks (0) Thanks(0)   Quote audiomik Quote  Post ReplyReply Direct Link To This Post Posted: 23 February 2012 at 8:28pm
OK, so all of the discussion so far about it's performance with a 'normal' single Amplifier output driving it.......

Now what I think is potentially interesting in the spec is that it has a 'dual impedance' voice-coil - so that indicates there might be 2 windings which may be possible to be used as one for the Amplifier Output and the other for 'motional feedback'.
Now this creates a whole different approach to it's use perhaps?
Mik
Rule #1: "there are no such things as problems
...........................only solutions we haven't thought of yet"
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slaz View Drop Down
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Points: 1257 		Post Options Post Options   Thanks (0) Thanks(0)   Quote slaz Quote  Post ReplyReply Direct Link To This Post Posted: 23 February 2012 at 8:45pm
Originally posted by Nitz V1505 Nitz V1505 wrote:

20w power handling, WTF were they thinking? 


Well actually if those specs bear anything more than a passing resemblance to reality, they'd be _very_ good for a 2020 Tripath (= about 15W+15W, 12V battery-powered) amplified ghetto-blaster.
Fairly light at 1.3Kg too.
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slaz View Drop Down
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Points: 1257 		Post Options Post Options   Thanks (0) Thanks(0)   Quote slaz Quote  Post ReplyReply Direct Link To This Post Posted: 23 February 2012 at 8:50pm
Originally posted by audiomik audiomik wrote:

OK, so all of the discussion so far about it's performance with a 'normal' single Amplifier output driving it.......

Now what I think is potentially interesting in the spec is that it has a 'dual impedance' voice-coil - so that indicates there might be 2 windings which may be possible to be used as one for the Amplifier Output and the other for 'motional feedback'.
Now this creates a whole different approach to it's use perhaps?
Mik


Yeah forgot to mention that .... odd/interesting. I was just thinking about it being useable as 4R which is optimal for those Tripath amps ....

Wonder if they mean 2 x 4R coils or 2 x 8R coils ....

Mebbe we should try asking Blue Aran (bless their cotton socks and superb quality CtrlC-CtrlV techniques).
REMEMBER....POLITICIANS AND DIAPERS SHOULD BE CHANGED OFTEN AND FOR THE SAME REASON
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Points: 6776 		Post Options Post Options   Thanks (0) Thanks(0)   Quote tweeter box Quote  Post ReplyReply Direct Link To This Post Posted: 23 February 2012 at 8:56pm
or for £1 more u can get the 100w "bass" version

http://www.bluearan.co.uk/index.php?product=SoundLab_10_inch_100_W_Bass_Chassis_Speaker&id=EVNDP115A
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Points: 1747 		Post Options Post Options   Thanks (0) Thanks(0)   Quote audiomik Quote  Post ReplyReply Direct Link To This Post Posted: 23 February 2012 at 8:57pm
Probably a good idea to ask!

Anyway, what I have in mind when I posted earlier is something like a very compact extended low frequency Sub for things like 2.1 systems; for use with PC's or Iplod's etc......

Don't see why it might not have a 12V DC and Mains power input to a built in Amplifier to sort of answer Slaz's point

Mik

Edited by audiomik - 23 February 2012 at 9:04pm
Rule #1: "there are no such things as problems
...........................only solutions we haven't thought of yet"
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slaz View Drop Down
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Points: 1257 		Post Options Post Options   Thanks (0) Thanks(0)   Quote slaz Quote  Post ReplyReply Direct Link To This Post Posted: 23 February 2012 at 8:58pm
Originally posted by Disco Stu Disco Stu wrote:

It doesn't specify at what frequency that was measured, therefore its largely irrelevant.... one thing you can be sure of, its not 50Hz.

102dB would be achievable at 1kHz-ish if the speaker has a rising response like a lot of the cheaper eminence ranges do. 

This one has 101dB at 2.5kHz but only 83dB at 50Hz http://www.eminence.com/pdf/Basslite_S2010.pdf

Stu


Yeah I suppose being Soundlab, it might have a really nasty 12dB spike at 3k - hence the claim .... well we know about "max power" - why not "max efficiency" (from the POV of the marketroids I mean).
REMEMBER....POLITICIANS AND DIAPERS SHOULD BE CHANGED OFTEN AND FOR THE SAME REASON
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