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Thread: A larger room, a pair of 4313B and maybe the need to upgrade?

  1. #31
    Senior Member martin_wu99's Avatar
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    Quote Originally Posted by Malefoda View Post
    Hi guys,
    he's ready to pull the trigger on a pair of mint 4430. If I've ready what's to be read about, the only drawback is the lack HF, annoying for youngsters (which we ain't no more).
    To be amplified with Hypex on the passive XO, but right now the 100W Yamaha.
    Before money's vanishing, are there "flaws" we should be aware of?

    Thanks!
    I think 100W Yamaha can not match 4430,you may find more better and more powerful amp for 4430,don't waste your 4430,very good speaker.
    How to match a speaker is a kind of art.
    46 lover

  2. #32
    Senior Member martin_wu99's Avatar
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    Quote Originally Posted by Ian Mackenzie View Post
    http://www.jblproservice.com/pdf/Net...%20Network.pdf


    Already bypassed.

    You could do the charge coupled crossover which is an improvement.
    That would entail a new build of the crossover network.

    A Tad 2002/2001 compression driver has been substituted for the 2425 compression driver.
    An expensive upgrade but the results are apparently impressive.
    Very good suggestion!can 2425 be replaced directly without any modification of crossover?
    Do you think that 4430 still need UHF(077)while replace 2420 with TAD2002?
    Is there any even more better drivers than TAD 2002 for 2425 replacement?
    46 lover

  3. #33
    Senior Member Ian Mackenzie's Avatar
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    The answer is yet to be determined.

    None of this stuff us ever plug and play. It’s just isn’t and if you were going to spend $3000 plus on drivers you would want to optimise the response and the crossover.

    The Radian Be 1 inch driver might fit the horn and it might work but how well is an unknown. I don’t think adding a 2405 driver is necessary or desirable in this type of system.

    The thing is the 2425 is a diy friendly driver while l have heard the Tad2001 is not.

    There is some conjecture on whether Be diaphragms work subjectively well in the top octave. I don’t have a problem there with my Tad4003 on my Bill Woods AH700 large conical horns but the AH700 is one of the best horns money can buy. A lot of this kind of discussion comes down to interpretation of what diy people are doing in their own space.

    So when someone says you must do this and you do that l go really! An example is claiming the 2405 must be used on top of the 2344 bi radial.

  4. #34
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    Cool

    So many switch contacts waiting to fail... thanks for the document Ian.
    I see crossover's parts as important as the ones you'll find in previous gear: if your DAC and your amp have top quality filter/coupling caps, why keep lower quality (and nobody can deny a MKT does less than a MKP, that's a technical fact (one can deny hearing it I agree)) in the audio stream and -worst- as a bottleneck before the drivers? And I've experienced, each time, a real gain in swapping MKT and/or MKT//MKP with MKP and/or MKP//Polystyrene. And yes you're right, all that being CCed in my bluties, my 4313Ti
    Zonker wondering:
    http://www.audioheritage.org/vbullet...ecapping-4430s
    Seems these mexican-made caps are MKT. Will read more about them, maybe find used XOs and upgrade them so we can keep OEM ones. And keep the idea of the better TAD for my brother's next years of fun =)
    Martin,
    the 100W mass market Yamaha is just there to wait, will produce some music anyway. At the end (months coming) are planned an (an or a?) Hypex power amp (being a nCore 400/500 or at worst an UcD400/700, choice will depend on how much power needed, 180/300W...) and a home-brew DAC ŗ la Weiss DAC202. That's why I want the last drop of juice not being wasted in some lesser Mylar caps
    Will share results here.

  5. #35
    Senior Member Ian Mackenzie's Avatar
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    Yep see my other posts in that thread.

    I buillt my network for these 2344 horns with Hovland capacitors and was happy with the results. I use Pass Labs amps and a pro DAC so my subjective impressions may not necessarily align with others who use different equipment.

  6. #36
    Senior Member Ian Mackenzie's Avatar
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    When you have done the passive crossover send me a pm and l will help you on the amp for the horn and an active crossover

  7. #37
    Senior Member martin_wu99's Avatar
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    Quote Originally Posted by Ian Mackenzie View Post
    The answer is yet to be determined.

    None of this stuff us ever plug and play. Itís just isnít and if you were going to spend $3000 plus on drivers you would want to optimise the response and the crossover.

    The Radian Be 1 inch driver might fit the horn and it might work but how well is an unknown. I donít think adding a 2405 driver is necessary or desirable in this type of system.

    The thing is the 2425 is a diy friendly driver while l have heard the Tad2001 is not.

    There is some conjecture on whether Be diaphragms work subjectively well in the top octave. I donít have a problem there with my Tad4003 on my Bill Woods AH700 large conical horns but the AH700 is one of the best horns money can buy. A lot of this kind of discussion comes down to interpretation of what diy people are doing in their own space.

    So when someone says you must do this and you do that l go really! An example is claiming the 2405 must be used on top of the 2344 bi radial.
    You think TAD2001 is the best solution for 2425?someone think 2425+2405 is better than TAD2001
    46 lover

  8. #38
    Senior Member Ian Mackenzie's Avatar
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    Anyone is entitled to their opinion and what they do is entirely up to them.

    But my comments above stand.

    You have to appreciate the whole excerise is about creating an illusion of the original recorded event.

    Everyone has a different view of what that illusion should sound like so itís hardly surprising to hear about the add on modifications people make to a loudspeaker.

    The thing is this system was in production for a long time and Jbl never sort to significantly upgrade the design. A lot of industry professionals use that system and l imagine Jbl would have received their feedback if the addition of a 2405 was required.

    If someone thinks it needs a super tweeter they might be loosing hi frequency hearing or they might realise the 4430 is not for them.

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