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Ibanez SR805… active to active/passive conversion?

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  • #164468
    Spidey2112
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    Purchased my SR805 back in ’17, from Sweetwater.  These were being discontinued, and were nicely discounted to move quickly.

    Snag.  Mine.  Received an even better discount afterward, based on problems I had found (and resolved myself) with the instrument.  The barrel jack was both bad AND miswired.  Let’s put it this way, if Sweetwater was truly performing their much acclaimed… (trumpet fanfare)… 55 point inspection, they should have caught both of these deficiencies, just like I did.

    I wonder whether my part time stint and subsequent discount with Sweetwater’s repair division qualified as extra wages?  Oh well…

    Here’s the rub.  The SR805 is strictly active… battery removed?  Nada.

    I contacted Ibanez (it takes them a couple of days, but they will get back with you) and they suggested gutting the electronics, and replacing preamp and components.  I believe they quoted around ~$125.

    $125?  For the a new preamp?  The existing volume, blend, bass/mid/treble pots and a dual freq switch should all be good to go with a new preamp, right?  The pickups are a pair of Bart MK1’s.  Maybe they meant an already configured preamp with wiring harness and components?

    Anyways, I really like this bass for a 5’er.  I just don’t want to put a bunch into this, if there’s a cheaper alternative I can implement.

    Go ahead and talk amongst yourselves, but leave your inner thoughts within the annals of this chamber.  If you hear an echo, leave more.

    *FWIW, I believe Ibanez sent me the wiring diagram for an SR805, but I’m pretty sure the preamp (ICE III?) is the brains of this outfit, with all components providing input to it, and it alone.

    Endorsing scratchy pots, since 2019.

    #164481
    Spidey2112
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    A member on TB suggested the innards of a EHB1005ms.  Aren’t these the newer headless offering from Ibanez, and he’s already changed the stock preamp out?*

    *For a John East, I believe.

    Endorsing scratchy pots, since 2019.

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    #164529
    Andyman001
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    If you’re sure you need a preamp, I have a Seymour Duncan 3 band Amy sent me when he was cleaning house.

    it has a push/ pull volume?, a stand alone, and a concentric for I’m guessing bass mid & treb. it’s yours if you want it.

    DSC03282

    “If you try to fail, and succeed, which have you done?”
    ― George Carlin

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    #164533
    Spidey2112
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    If you’re sure you need a preamp, I have a Seymour Duncan 3 band Amy sent me when he was cleaning house.

    it has a push/ pull volume?, a stand alone, and a concentric for I’m guessing bass mid & treb. it’s yours if you want it.

    DSC03282

    Appreciate the offer, Andy!  Going to try and contact Ibanez one more time, and see if I can get more detailed info on a substitute pre which can still utilize the hardware I currently have.  I’ll keep it in mind, though.

    Endorsing scratchy pots, since 2019.

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    #164534
    Andyman001
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    If you’re sure you need a preamp, I have a Seymour Duncan 3 band Amy sent me when he was cleaning house.

    it has a push/ pull volume?, a stand alone, and a concentric for I’m guessing bass mid & treb. it’s yours if you want it.

    DSC03282

    After looking for the wiring diagram, probably volume – blend – bass/treble

    JazzBass_STC3P

    “If you try to fail, and succeed, which have you done?”
    ― George Carlin

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    #164550
    Spidey2112
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    Andy, I don’t even think that will fit in the existing cavity.  It’s pretty tight in there…

    … wait for it.

    Endorsing scratchy pots, since 2019.

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    #164554
    Spidey2112
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    If you’re sure you need a preamp, I have a Seymour Duncan 3 band Amy sent me when he was cleaning house.

    it has a push/ pull volume?, a stand alone, and a concentric for I’m guessing bass mid & treb. it’s yours if you want it.

    DSC03282

    After looking for the wiring diagram, probably volume – blend – bass/treble

    JazzBass_STC3P

    Well, hold on a sec… now, it’s looking interesting.  Am I seeing right?  The push/pull volume with either make it active or passive?  Separate mid, and a dual function concentric treble/bass?

    Now I gotta measure.  Lol!

    Endorsing scratchy pots, since 2019.

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    #164652
    Andyman001
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    yeah, after looking at again, no blend. you could use existing.

    Andy, I don’t even think that will fit in the existing cavity. It’s pretty tight in there…

    … wait for it.

    TWSS

    🙂

    take a pic of the backside (Tee hee hee), control cavity should be close to my SR 405, or 506

    “If you try to fail, and succeed, which have you done?”
    ― George Carlin

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    #164664
    Spidey2112
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    … take a pic of the backside (Tee hee hee), control cavity should be close to my SR 405, or 506

    I’m putting money down they’re all the same.  Lol!

    Will do, Andy.  Now, where did I leave that pic of Amy’s hairy good side?

     

    Endorsing scratchy pots, since 2019.

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    #164679
    Spidey2112
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    Found the email I sent to Ibanez USA, and their responses.  According to Ibanez, this is what’s currently in my SR805, serial number dependent.

    Single unit preamp, with associated hardware included:

    image001

    Here’s what they proposed at the time:

    image002

    Modular concept… read, $$$.

    I’m going to contact an Ibanez dealer that’s in close proximity to my home web, and see if they can come up with a quote for what’s shown.

    Give me a sec, and I’ll get a pic of the cavity.

     

     

    Endorsing scratchy pots, since 2019.

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    #164684
    Spidey2112
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    Notice almost each pot has its own PCB, in the modular version, where the original did not.  I really can’t picture all of that fitting in there…

    … wait for it.

    Endorsing scratchy pots, since 2019.

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    #164687
    Spidey2112
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    IMG_20210103_1118142572

    About a little over 1.25″ in depth.  Re the pic, about 3 1/16″ from top to route for mid pot, and about 4 3/4″ from upper left to lower right.  I didn’t take into account the angled slope of the wall housing the barrel jack.

    Endorsing scratchy pots, since 2019.

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    #164728
    Andyman001
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    Mine is much more roomy with the older side jack. the push/ pull pot is deepest, at just under 1-3/16″.

    DSC03284

    “If you try to fail, and succeed, which have you done?”
    ― George Carlin

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    #164759
    Spidey2112
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    Andy, is what Amy gave you a STC-2P or STC-3P?

    Endorsing scratchy pots, since 2019.

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    #164773
    Spidey2112
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    https://reverb.com/item/31756081-aguilar-obp-3-custom-kit-for-2-pickup-5-knob-2-switch-configuration-v-bl-t-m-b-msw-apsw

    I wish this was cheaper, but everything is there.  The module has a small footprint, so that handles the cramped quarters issue.  Anyone have any experience with the Aguilar OBP-3?

    Endorsing scratchy pots, since 2019.

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    #164784
    Still4strings
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    https://reverb.com/item/31756081-aguilar-obp-3-custom-kit-for-2-pickup-5-knob-2-switch-configuration-v-bl-t-m-b-msw-apsw

    I wish this was cheaper, but everything is there. The module has a small footprint, so that handles the cramped quarters issue. Anyone have any experience with the Aguilar OBP-3?

    So much. I can’t even tell you how many of these I’ve installed. I was an Aguilar dealer (along with Bartolini, EMG, and SD) back in the day. The OBP-3 was my favorite preamp.

    I might even still have some, but probably not the pots and switches. Let me know if you’re interested.

    Causing trouble in the sctmmc since November 13th, 2018.

    "Punk rock changed our lives." - D. Boon

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    #164841
    Andyman001
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    Andy, is what Amy gave you a STC-2P or STC-3P?

    I have no clue.

    “If you try to fail, and succeed, which have you done?”
    ― George Carlin

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    #164845
    Mktrat
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    https://reverb.com/item/31756081-aguilar-obp-3-custom-kit-for-2-pickup-5-knob-2-switch-configuration-v-bl-t-m-b-msw-apsw

    I wish this was cheaper, but everything is there. The module has a small footprint, so that handles the cramped quarters issue. Anyone have any experience with the Aguilar OBP-3?

    I have one in the twisted ‘Wick.  It’s solid.  No complaints.

    There's something about this that's so black, it's like how much more black could this be?
    And the answer is none. None more black. -Nigel Tufnel

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    #164897
    Spidey2112
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    I have one in the twisted ‘Wick. It’s solid. No complaints.

    Thanks for the input, Mktrat!

    Endorsing scratchy pots, since 2019.

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    #164898
    Spidey2112
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    Let me know if you’re interested.

    I very well may be.  I can hunt down another black mini DPDT toggle for the active/passive option, or use the existing mid switch.  I’m thinking the existing pots can be utilized in the new configuration.

    Endorsing scratchy pots, since 2019.

    3 users thanked author for this post.
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