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  1. Thread: 2235 Surround

    by ivica
    Replies
    11
    Views
    608

    Hi Vahe.., I think transparent PVA glue would...

    Hi Vahe..,

    I think transparent PVA glue would be OK, such as:
    https://reconingspeakers.com/product/white-latex-glue-1-oz-bottle/

    regards
    ivica
  2. Replies
    23
    Views
    3,205

    Hi robertg, Very, very interesting solution, i...

    Hi robertg,

    Very, very interesting solution, i have not seen such yet. As You have said, You can exchange 2446&2311&2398 with 2420&2307&2308.
    Any of the combos operates from 1200Hz to 8000Hz....
  3. Replies
    10
    Views
    1,201

    Hi Thomee, Have You tried SELENIUM HL-14-25...

    Hi Thomee,

    Have You tried SELENIUM HL-14-25 (1"-throat horn), seems very similar to the JBL 2312, You are looking for

    https://www.jblpro.com/ProductAttachments/HL14-25_SpecSheet.pdf

    regards...
  4. Hi marco_gea, Thank You for the summary data...

    Hi marco_gea,

    Thank You for the summary data presented, though, large (2") format driver throat drivers are not so popular today, as most of them would expect to be used with large horns, and...
  5. Replies
    12
    Views
    1,345

    Hi Eric, I think (not sure): 1xx=Magnetic...

    Hi Eric,

    I think (not sure):

    1xx=Magnetic Circuit (return path)
    2xx=Aluminum short ring for HF impedance control (as on bass driver 'Flux stabilizing ring )
    3xx=Top Plate

    regards
    ivica
  6. Replies
    103
    Views
    10,654

    Hi Earl K, what kind of problem can expected...

    Hi Earl K,

    what kind of problem can expected to use Be-Trx diaphragm with 476 core.
    I can imagine that Mg diaphragm would produce higher F/R response then Be-Trx one.
    Using JBL Be diaphragm,...
  7. Replies
    5
    Views
    1,066

    Hi ggould, I would suggest You to look at the...

    Hi ggould,

    I would suggest You to look at the JBL STX825 solution, where 2226 have been used up to 1.3kHz. With the mentioned 2380 horn I think it can be used from about 1.1kHz, so better loading...
  8. Hi TimVG, very good results! regards ivica

    Hi TimVG,

    very good results!

    regards
    ivica
  9. Replies
    2
    Views
    690

    Hi toddalin, I am aware of the impedance...

    Hi toddalin,

    I am aware of the impedance influences to the network FR response, but as CD driver impedance are very complex I wold first suggest to do some measurements with the real driver(s),...
  10. Thread: 4351 pdf

    by ivica
    Replies
    5
    Views
    1,069

    Hi bldozier. ...

    Hi bldozier.

    https://reconingspeakers.com/product/jbl-2235-mass-ring/


    I would not suggest ALNICO magnet LF basket ( D or K )
    for building LF bass driver, as it is sensitive to...
  11. D2 & M2 with passive network

    Hi Zeljko,

    It seems to that , even passive network can be applied to Your D2&M2 combo, using RLC network with Q ( =XL/R) about 0.5 with resonant frequency fo=3.6kHz, reducing sound level about...
  12. Replies
    46
    Views
    5,109

    Hi grumpy, I think 2447 and 2451 as 1.5" type...

    Hi grumpy,

    I think 2447 and 2451 as 1.5" type drivers have the same bolt patterns, while 2450-1.5 (SL), 2452, 53 and D2430K (D2) have the same bolt patters, but all of them are 1.5-inch driver...
  13. Replies
    46
    Views
    5,109

    Hi iansr, I have no experience with H1010, but...

    Hi iansr,

    I have no experience with H1010, but for me, PTH95HF is quite good with the mentioned driver.

    regards
    ivica
  14. Replies
    46
    Views
    5,109

    JBL PT-H95HF-1 JBL p/n: 443495=001

    Hi inasr,

    I would think about JBL PT-H95HF with 2450-1.5 driver with 2441AL or 2445 diaphragm. I think it can be used from 800Hz

    https://www.jblpro.com/ProductAttachments/tn_v1n31.pdf


    ...
  15. Hi dubkarma, So, You would need a pair of bass...

    Hi dubkarma,

    So, You would need a pair of bass drivers (2269 or 2242 or 2245 ) and a pair of UHF drivers (2405).
    I would not expect deep and solid bass from 2216nd, but it would bevery good...
  16. Replies
    346
    Views
    120,497

    Hi kfz03110, Owing to the 2216nd technical...

    Hi kfz03110,

    Owing to the 2216nd technical data, such 3-inch VC driver can be used as very good mid-bass driver, but a kind of bass-helper (2269), I think, would be well-come, or a kid of...
  17. Hi Tonymontana, Passive networks have more...

    Hi Tonymontana,

    Passive networks have more complex responses then standard active types. If ONLY looking at the LC values of the LF and HF parts it seems to me that LF is round 750Hz and HF is...
  18. Replies
    3
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    833

    Hi EE99, As I have remembered VC of 2206 is...

    Hi EE99,

    As I have remembered VC of 2206 is made of "copper-clad aluminum wire"

    https://en.wikipedia.org/wiki/Copper-clad_aluminium_wire

    so it has to be thin copper layer over aluminum....
  19. STX825 Network

    Hi dubkarma,

    Looking at the JBL STX825 service manual

    http://www.jblproservice.com/pdf/STX%20Series/STX825.pdf

    it seems that it is used 3rd-order hi-pass network for the UHF driver (slope=...
  20. Replies
    20
    Views
    3,965

    Hi, It has been shown that some improvements...

    Hi,

    It has been shown that some improvements can be get using Jbl 2452 and STX825 by applying 0.5 inch "spacer" between them. A kind of notch in the response can be almost eliminated.....so may be...
  21. Replies
    30
    Views
    5,247

    HI rodec, Welcome to the Forum. May be You...

    HI rodec,

    Welcome to the Forum.
    May be You think of 2450-1.5 or 2451 or 2447, or 476Be or 476Mg, but the problem would be UHF reproduction, except You would get Be/Mg diaphragms.
    regards
    ivica
  22. Replies
    181
    Views
    99,626

    Hi Barry, That meansthat 2245 is not working...

    Hi Barry,

    That meansthat 2245 is not working as expected.
    On some listening experience (no mesurements) not all 2245 sounded the same under the same other parts. Especially newly reconed units...
  23. Replies
    181
    Views
    99,626

    Hi Barry, Have you done so called "near field...

    Hi Barry,

    Have you done so called "near field measurements " or several meters away from the speaker.
    I am not sure how near field measurements behaves in 2pi or 4pi environment.
    Regards ...
  24. Replies
    181
    Views
    99,626

    Hi Barry, can You show some measurements ...

    Hi Barry,
    can You show some measurements

    regards
    ivica
  25. Hi Eric, I would first try to see how the...

    Hi Eric,

    I would first try to see how the speakers would soud as close box design, by closing vents. Ther would be no bass but midbass have to be present.
    May be using such design, with...
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