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  1. Replies
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    Look for D16R2451SL they should be about the same...

    Look for D16R2451SL they should be about the same than D16R475ND. TAD DP4001 does not suit to JBL drivers. If you want to try Be diaphragm on JBL driver:...
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    Ian, the SNR of the 5235 is not given for full...

    Ian, the SNR of the 5235 is not given for full output level and is -90dBV, with its output stage which is different from the one of the 5234A. With my mods I’m around your spec of -105dB.SNR depends...
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    Mine has -10dB both for noise and THD than the...

    Mine has -10dB both for noise and THD than the stock model. I used modern low noise linear voltage regulators, with increased values for capacitors in this section, changed the input resistors to a...
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    As replacement of AD713 you can use OPA1644 on a...

    As replacement of AD713 you can use OPA1644 on a DIP-SMD adaptor. One friend of mine tried also OPA4134. Instead of 5532, OPA627 has to be on a dual op am DIP-SMD adaptor, as there are single op...
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    In the past I did a thread on a French forum...

    In the past I did a thread on a French forum where you can find lots of information about JBL UREI 5235, including values and frequency responses for JBL 4350 dedicated...
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    TAD TH-4003 clone will correspond to this. There...

    TAD TH-4003 clone will correspond to this. There is a good one manufactered in Hungary available through eBay.
  7. Thread: How is the 4367?

    by dn92
    Replies
    67
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    10,035

    In France there is a Pioneer eXclusive 2402 like...

    In France there is a Pioneer eXclusive 2402 like enclosure manufacturer that can ship to The Nederlands.The crossover schematic can be found on Internet. TAD TL-1601a/b and TD-4001 can be bought in...
  8. Thread: How is the 4367?

    by dn92
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    67
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    10,035

    I did not have the chance to listen to 4367, but...

    I did not have the chance to listen to 4367, but I listened several times some M2. It shares the same 1.5 inch compression driver with 4367. For the medium treble part of the signal, it doesn’t reach...
  9. Thread: TAD 2404 Build

    by dn92
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    78,400

    Are Richard and Ari still present on the forum? ...

    Are Richard and Ari still present on the forum? I've questions related to this Exclusive 2404 (some dimensions needed for helping a friend building its own 2404), I sent them private messages but...
  10. Thread: Who's here now??

    by dn92
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    10,012

    I’m here once every week or two weeks

    I’m here once every week or two weeks
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    Ask Restaur’Audio they have such 18dB compatible...

    Ask Restaur’Audio they have such 18dB compatible boards. https://www.restauraudio.fr/accessoires-a-vendre-cartes-pour-filtre-actif-jbl-51-5145.htmlIt is a card for 4345 but the PCB is the same, and...
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    D16R475Nd you can use D16R2451SL instead.

    D16R475Nd

    you can use D16R2451SL instead.
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    Response of TD-4001 on TH4001 is not flat on...

    Response of TD-4001 on TH4001 is not flat on axis, this why there is an EQ in the TN-1/TN-2 and TN-3 crossovers. This EQ is done by two RLCs working together. This enables a better response on axis,...
  14. Thread: Jbl 4349

    by dn92
    Replies
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    32,092

    Even the cone is made from californian trees, a...

    Even the cone is made from californian trees, a real 100%, not a 100% assembled in..
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    Dear Rob, Thanks. I still have the plan to...

    Dear Rob,

    Thanks.
    I still have the plan to translate what I did here in the past: https://www.jbl-vintage.com/t3066-filtre-actif-jbl-urei-5235 , that could be added later.
    I have also a pair of...
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    Some information to help you in your card...

    Some information to help you in your card conversion:

    xxBREQ cards are the followings:

    51-5232 - 500 Hz/18 dB/octave CCBREQ
    51-5233 - 800 Hz/18 dB/octave CCBREQ
    51-5332 - 500 Hz/18 dB/octave...
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    When using LR24 for Low and High filtering, in...

    When using LR24 for Low and High filtering, in bi-amp mode, supposing that you have one amp for LF and one amp for HF, you have to reverse the polarity either at the output either of the HF amplifier...
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    Input impedance variation is compensated by the...

    Input impedance variation is compensated by the resistor placed in parallel to the autotransformer input. With the apropriate resistor value, circuit input impedance will be the one of the resistor....
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    There are nice autotransformers from Germany ;-)...

    There are nice autotransformers from Germany ;-) on eBay.
    I'll try to find the link. I had the opportunity to measure two of them, and they work well. You can use them directly with Compression...
  20. Can someone at least confirm that the correct...

    Can someone at least confirm that the correct board reference for Paragon is M20?
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    Fostex r100 are autotransformer which is...

    Fostex r100 are autotransformer which is different from usual Lpads. Noble RPH25 is not available anymore, only on second hand market.
    ...
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    Otherwise you can search for Noble RPH25 (model...

    Otherwise you can search for Noble RPH25 (model used by TAD and Rey Audio) some of them used by Yamaha are 16ohm while the majority of them on second hand market are 8ohm.
    I’ve two of them in stock...
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    8ohm when connected in parallel as in the...

    8ohm when connected in parallel as in the provided schematic. Each pad of the r82b is 16ohm.
    I’ve a pair of them and measured this some time ago. You can go ahead with them.
  24. JBL SE408S crossover/equalizer board for Paragon DD44000

    I'm searching for the technical information about the equalizer board for JBL SE408S amplifier, to drive JBL Paragon with active crossover. It seems that the reference for the board is M20, but I’m...
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    take the r82b, it is a dual 16 ohm, just use one...

    take the r82b, it is a dual 16 ohm, just use one of the channels
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