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Post by derekrumble on Nov 18, 2009 15:12:06 GMT
Some photos of the JBL One - hope you like... Six cross headed screws fix the front to the main cabinet. Crossover is 'first order' to the bass/mid (i.e. one inductor in series with it). 'Second order' to the tweeter (i.e. a series cap plus an inductor in parallel). An attenuation resisitor too. Tweeter protection device. For the photographers in here I used my Pentax K100D Super DSLR with an old SMC Pentax M 50mm/f1.7 Derek
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toad
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I am the Super Toad, the Original Toad, the Whole Toad and nothing BUT the toad.... don't forget it!
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Post by toad on Nov 18, 2009 16:18:39 GMT
Nice pics Derek. Saves me opening up mine now They are a cracking little speaker for the cash. I keep toying with the idea of connecting up my Arcam DV135 that's currently used in my main headphone rig just to see what these little speakers can do with a decent source. Not that my sony DVD player is bad it's just nowhere near as detailed as the Arcam... well actually it does nothing anywhere near as good as the Arcam but it's still my second best source
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Post by derekrumble on Nov 18, 2009 17:02:56 GMT
I have used mine with my main system:
Denon DVD1930 > X-DACv3 or...........................................> X-PreV3 > MF A3.2cr > LS3/5a etc. Sony SCD XE670 (SACD)
It just makes me smirk with joy - the JBLs really shouldn't do what they do at that price.
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Post by PinkFloyd on Nov 18, 2009 23:11:00 GMT
The little tweeter protection jobbies light up like Blackpool illuminations if you drive the arse out of these speakers, you can see the glow out of the port holes Nice speakers and pretty much bullet proof.
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toad
Been here a while!
I am the Super Toad, the Original Toad, the Whole Toad and nothing BUT the toad.... don't forget it!
Posts: 1,223
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Post by toad on Nov 22, 2009 21:38:45 GMT
Tried my Arcam DVD135 with the JBLs driven by my Yamaha 5.1 amp. The yam has seperate amps for each channel so does a passable impression of a stereo AMP when in stereo mode. These little speakers are fantastic for the price. Excellent soundstage for such a small speaker on well recorded stuff.
I listened to a couple of my albums then I had to suffer the partners ABBA tracks but can't doubt they're well recorded. She's agreed in principle to me moving the Arcam down into the living room on a permanent basis and getting a new source for my Headphone rig. That'll have to wait until next year though. I spend far to much on this hobby already...
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Post by PinkFloyd on Nov 22, 2009 21:51:21 GMT
I've had a pair of these in my workshop for years, they are pretty much bullet proof and give a nice "midband" presentation.... as I said earlier, if you REALLY crank the volume up you'll see the port holes glowing red (the protection bulbs glowing)..... I have removed the protection lamps from mine and they sound even better (a tad more clarity)...... These speakers are best "corner mounted" close to the wall on wall supports.... they are pretty much farts in the wind mounted in free space... Great workhorses for a workshop, garage, conservatory, kitchen though..... I'll take a few pics of mine next time I'm out in the workshop (tomorrow )
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Post by derekrumble on Nov 23, 2009 11:02:51 GMT
I've had a pair of these in my workshop for years, they are pretty much bullet proof and give a nice "midband" presentation.... as I said earlier, if you REALLY crank the volume up you'll see the port holes glowing red (the protection bulbs glowing)..... I have removed the protection lamps from mine and they sound even better (a tad more clarity)...... These speakers are best "corner mounted" close to the wall on wall supports.... they are pretty much farts in the wind mounted in free space... Great workhorses for a workshop, garage, conservatory, kitchen though..... I'll take a few pics of mine next time I'm out in the workshop (tomorrow ) I took mine downstairs to the main system on Friday - I agree that they are gutless; I used mine with their backs to the wall to give the lower end a bit of help. But having said that they are gutless, the sound is cleverly balanced so that what bass there is is tight, punchy and tuneful. The other big plus is that they can play loudly, very loudly. It's hard to believe so much sound comes form such a tiny enclosure. The high levels aren't without sacrifice though, as they harden up when driven. These little JBLs are best used at modest levels, with a touch of bass lift if you have tone controls. Articulate, spacious, musical. Mine are now in the bedroom system - as I said before, to improve the sound that squeeks out of a small TV. So late night TV is a joy, and breakfast time FM is great too. The 'light bulb' protection device is in parallel with a resistor and both of these are in series with the tweeter. Am I right to guess that as the levels increase the bulb glows, it's resistance rises thus shunting the signal through the resistor? Derek
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Post by derekrumble on Nov 23, 2009 11:12:02 GMT
The 'light bulb' protection device is in parallel with a resistor and both of these are in series with the tweeter. Am I right to guess that as the levels increase the bulb glows, it's resistance rises thus shunting the signal through the resistor? Derek Well I was pretty wrong there! This PDF shows the crossover of a different version of the Control 1: www.jblproservice.com/pdf/Control%20Series/Control%201%20Plus.pdfDerek
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rowuk
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Post by rowuk on Jul 7, 2010 21:43:39 GMT
The lightbulb is for the woofer. When you have a ported design, the box is acoustically open below its resonant frequency (around 60 Hz). Any musical or non-musical content below that will cause the woofer to try and jump out of the box.
The lightbulb allow low level, low frequency signals to pass at full fidelity and higher level signals will compress only the LF signal below resonance.
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Post by PinkFloyd on Jan 21, 2011 22:34:02 GMT
I have moved my control one's onto my "desktop" and they are being driven by a NAD C315BEE amp.... they are absolutely FANTASTIC as near field monitors, I can't fault them! They image beautifully (1.8 metres apart with me sitting 700mm away from them, speakers positioned at ear level) and they do depth and height superbly.... incredible little things and I am only NOW appreciating their qualities.... I had them out in the workshop and they were pretty dire (it's quite a big place) sounding weedy and spitty.... Sitting almost "right next" to them really does show the strengths of these speakers (in spadeloads) Apple Lossless files > Asus Xonar DX > NAD C315BEE > JBL Control ones.... "cheap as chips" but, my god, we are talking seriously good NFM sound here! I'm listening to Sade at the moment and keep looking down under the desk thinking I must have attached a "subwoofer".... (I haven't) the "close quarter" bass response from these speakers is incredible.... it's not "DEEP" but they give the impression of deep bass! I don't normally listen to loudspeakers at such close quarters but WILL be doing so a lot more now... the Control one's may be "cheap" but they are one hell of a revealing, musical, exciting, three dimensional listen if set up correctly Excuse the mess on my desktop, It's not usually so untidy
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xerxes
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Post by xerxes on Jan 22, 2011 12:48:03 GMT
Are you taking the piss? I dream of a desk so tidy, but my pyramid filing* technique spoils it. * Just pile all your paperwork in a big heap so that it forms a pyramid. Eventually things start to slide off and fall on the floor. When something falls on the floor pick it up and look at it, if you can't remember what it is, it's obviously not important, so throw it in the bin. If it is important, put it back on the pile.
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Deleted
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Post by Deleted on Jan 22, 2011 14:25:42 GMT
* Just pile all your paperwork in a big heap so that it forms a pyramid. Eventually things start to slide off and fall on the floor. When something falls on the floor pick it up and look at it, if you can't remember what it is, it's obviously not important, so throw it in the bin. If it is important, put it back on the pile. Owen, Have you ever worked for a public service department?
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xerxes
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Post by xerxes on Jan 22, 2011 14:47:58 GMT
Yes, I'm in charge of refunding over-paid tax.
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lini
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Groanings from Han(g)over
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Post by lini on Jan 29, 2011 1:05:12 GMT
I've got two pairs. Number one is a pair of passive Control 1G Universe. Number two is the active 2x 20 W amped version Control Media, which JBL unfortunately only offered for a rather short while (probably due to being a bit too pricey...). I used to have the latter in the office - much to the frustration of most other hardware editors around, who typically had stereo or surround sub/satellite systems by Creative or Logitech, which just couldn't compete with the Control Media. And I didn't even have the matching sub... So, yup, kudos to JBL for this little monitor, which sure belongs to the classics of priceworthy hifi/music equipment. Greetings from Munich! Manfred / lini
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