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Thread: Jbl 2234 vs 2235

  1. #1
    rvito
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    Jbl 2234 vs 2235

    Hello Folks. I am wondering what would be lost or gained by using 2235 woofers for the low bass in JBL 4435s instead of 2234s

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    2235!

    Quote Originally Posted by rvito View Post
    Hello Folks. I am wondering what would be lost or gained by using 2235 woofers for the low bass in JBL 4435s instead of 2234s
    The JBL 2235 is the best woofer you can have! Go with it!

  3. #3
    Senior Member 4343's Avatar
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    Cool 2234H = 2235H minus Mass Ring

    You may come to hate the sound of the mass ring hitting the top plate...
    Mike Scott in SJ, CA
    Drive 'em to the Xmax!

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    Administrator Mr. Widget's Avatar
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    Quote Originally Posted by rvito View Post
    Hello Folks. I am wondering what would be lost or gained by using 2235 woofers for the low bass in JBL 4435s instead of 2234s
    I believe the 2234H variant was created specifically for the 4435... but regardless it was certainly selected for use in the 4435, so I am confident that the performance of the 4435s with 2235Hs will not perform as well as they will with the lower mass 2234H woofers.


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    Senior Member pos's Avatar
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    Nothing to gain.
    The mass ring is just there to burn some efficient up high, the LF response of both transducers is identical.

    In fact this is the other way around: if the filter account for it the 2234H is the ideal replacement for a 2235H.
    In that case the best option would even be a E140 core with a 2234 kit...

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    Senior Member ivica's Avatar
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    Quote Originally Posted by rvito View Post
    Hello Folks. I am wondering what would be lost or gained by using 2235 woofers for the low bass in JBL 4435s instead of 2234s
    Hi rvito,

    As I have understood, You are talking about only LOW BASS driver in 4435 , someone can call it "helper bass". Looking at the 4435 crossover network there is 18mH coil connected to that driver. Some simulation programs has shown that this driver is intended to be used up to 120~150Hz, where the difference between 2234H vs 2235H is very small. Over mentioned frequency the differences in the drivers (2235H vs 2234H) responses are more 'visible', as 2234H cone assembly is lighter then 2235H (that has mass-ring serial no.51629 of about 35gr), some other JBL data said that Mms(2234)=105gr, while Mms(2235)=155gr.

    reagrds
    ivica

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    Quote Originally Posted by pos View Post
    In that case the best option would even be a E140 core with a 2234 kit...
    This is exactly what's working in my 4355s. Stellar bass performance .

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    Quote Originally Posted by ivica View Post
    Over mentioned frequency the differences in the drivers (2235H vs 2234H) responses are more 'visible', as 2234H cone assembly is lighter then 2235H (that has mass-ring serial no.51629 of about 35gr), some other JBL data said that Mms(2234)=105gr, while Mms(2235)=155gr.
    I guess JBL figured on using 15 gr of glue to hold it in.

    The mass ring has fallen from grace. As G.T. has stated several times, use the 2234H and fill in the bottom end with EQ if desired. This is how JBL does pretty much all of their systems these days. They no longer "fear" using EQ nor are they afraid to recommend it.

  9. #9
    Senior Member remusr's Avatar
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    If you replace the 4435's specified 2234's with 2235's, JBL T-S params show you will lose 2dB sensitivity at 1W, correspondingly more at listening levels. You could turn down the horn a bit to compensate. Boxes are tuned for 2234's 23Hz fs not 2235's 20Hz so may sound noticeably different. The 2234's do sound good in that speaker!

  10. #10
    Senior Member pos's Avatar
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    The actual sensitivity of these two transducers is almost identical in the <150Hz range.

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    Senior Member ivica's Avatar
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    Quote Originally Posted by remusr View Post
    If you replace the 4435's specified 2234's with 2235's, JBL T-S params show you will lose 2dB sensitivity at 1W, correspondingly more at listening levels. You could turn down the horn a bit to compensate. Boxes are tuned for 2234's 23Hz fs not 2235's 20Hz so may sound noticeably different. The 2234's do sound good in that speaker!
    Hi remus,

    May I do not understand correctly, but only one driver (helper bass) per box would be changed. As POS has mentioned, under say 150Hz , 2234 and 2235 have almost the same efficiency...

    regards
    ivica

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    Senior Member 1audiohack's Avatar
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    Quote Originally Posted by pos View Post
    ....In that case the best option would even be a E140 core with a 2234 kit...
    Agreed. That combination is the best I ever liked a 2234-2235, the 2234E!

    Staying with the old school drivers, I still like 2220's with a sub.

    Barry.
    If we knew what the hell we were doing, we wouldn't call it research would we.

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    Administrator Mr. Widget's Avatar
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    Quote Originally Posted by 1audiohack View Post
    Staying with the old school drivers, I still like 2220's with a sub.
    You are a high sensitivity nut, aren't you!

    The last time I owned 2220As, subs weren't yet invented or at least not yet commonplace. You might have something there, but I bet the K145 or E145 and a sub is even better though not quite as sensitive.


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    Senior Member spkrman57's Avatar
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    In good company

    Quote Originally Posted by Mr. Widget View Post
    You are a high sensitivity nut, aren't you!

    Widget
    I'm big into high efficiency and tube amps!

    Ron
    JBL Pro for home use!

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    Heather [Senorita member] hjames's Avatar
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    I know its anecdotal - but ...
    I've got a pair of 2234 drivers in my L200B cabinets (w/3133 crossovers).
    I tried both 2235 and the 2234 drivers, and it seemed like the 2234
    blended in with the original 2425/short horn combo better. I kept them
    when I switched to the external smith horns and 2445J mid-drivers
    2ch: Oppo, JoLida 502CRC, JBL L212, 18ti,240ti; Heath AS101, Von Schweikert VR4
    7.1: Oppo BDP103D, B&K, UREI 809A, JBL B460

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