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Yamaha DBR10 w/ Headway EDB-2

Discussion in 'Amps, Mics & Pickups [DB]' started by MDrost1, Mar 17, 2018.


  1. MDrost1

    MDrost1 Supporting Member

    Oct 16, 2009
    Grand Haven, MI
    Folks,

    In the never ending quest for double bass amplification, I have discovered a new, and yes, affordable setup that I really enjoy. Excuse my long winded preface.

    I have been dealing with tonal consistency issues with my Ischell and AI rig. I play a steady gig that has awful stage coupling. The only answer I have found is elevating a speaker. I have owned a whole litany of cabinets and amplifiers. Acoustic Image has actually been my favorite for many years, and I still love Rick's gear and his customer service. I have even gone so far as to create an add-on appendage to pole mount the AI cabinet .

    Through this journey of inconsistent amplified tone I have found that I prefer the following:
    1) I like having my cabinet elevated.(ala Larry Grenadier)
    2) I like having the preamp controls nearby, or to my right for quick adjustment.

    I have a tour this spring of Germany and will be playing a Chadwick. The Ischell just isn't convenient in this application as I have to tear the bass down everyday. So, I will be using a Full Circle(which I used to use). I decided to purchase a Headway EDB-2 for the tour as well and absolutely love it. Enter - my curiosity to find a good powered speaker. I heard Larry G. play my bass for a Mehldau trio show a few months ago and his amplified sound was "it". So, I did a quick internet search, and performed my due diligence on Talkbass, and found the Yamaha DBR10.

    The DBR10 is 23lbs. The frequency response is similar to the QSC speakers, and the DSP is very friendly to the double bass.

    All said, I purchased the EDB-2 for $320(open box) and the DBR10 for $308 (open box). I do mount it on a mini pole mount stand(recommended by Rick Wolff). With the Full Circle this rig sounds great to my ears. Super consistent. I really enjoy the natural sound, and the flexibility of this little rig. I haven't used it with the Ischell yet. I know it will make it even better.

    I just thought I'd share my findings with you all.
     
    Chris Fitzgerald and Tom Lane like this.
  2. rickwolff

    rickwolff CGJ Emeritus (Certified Gear Junkie) Retired??? Supporting Member

    M....(redacted),
    Happy to hear of your questing success. It's great to find a setup that works well for you.

    I'll let you know how my new micro-rig works out - it's a headphone amp and an earbox.









    Come on, folks. I'm kidding.
     
    Tom Lane and MDrost1 like this.
  3. kerrycares

    kerrycares Gold Supporting Member

    Jan 17, 2006
    Michigan
    I did the same thing with a QSC ...... electric bass is way more easier
     
    MDrost1 likes this.
  4. Ric Vice

    Ric Vice Supporting Member

    Jul 2, 2005
    Olivette, Missouri
    I find it interesting that you have to remove and re-install the Ischell each
    time you breakdown the Chadwick. Is is because you have the X-Jack attached to the tailpiece? I never have to be take the Ehrlund off, but my current bass dosen’t collapse. Part of Larry Grenadier’s signature sound is the Schoeps CMC6/MK 47 condenser and the “Really Nice Preamp”. The Headway EDB-2 should power the Ischell. Which would allow you to eliminate the XJack.

    Ric
     
    MDrost1 likes this.
  5. No problem here powering the Ischell with an EDB-1.
     
    MDrost1 likes this.
  6. Ric Vice

    Ric Vice Supporting Member

    Jul 2, 2005
    Olivette, Missouri
    Do you use the AC adaptor when you
    power up the Ischell? I seem to remember that the DPA 4099B would deplete the batteries on the EDB-2, after 16 hours, provided you shut it off, during breaks between sets. The Ischell draws less current so the batteries should last longer.

    Ric
     
    MDrost1 likes this.
  7. MDrost1

    MDrost1 Supporting Member

    Oct 16, 2009
    Grand Haven, MI
    Gents,

    The Ischell version that I use is the X48. No x-jack. However, I mount the XLR jack on the underside of the tailpiece. When tearing the Chadwick down, the tailpiece stores inside the body. If I mounted the XLR inside the body or on the back, it might work. For my situation on tour, the pickup seems to be a more simple solution.

    Incidentally, I brought my Thompson Hybrid out with this rig, and the Ischell. I loved it. The sound was fantastic. It was one of those gigs when you "forget about the amplification" and just play music.

    The Ischell is powered just fine by the EDB-2. This will be my regular rig for a while, I am sure. For bigger gigs I may find a good 12" speaker. I had a nice chat with Larry Grenadier about this subject. He has a very simple, and effective approach(which has been covered in TB extensively). However, the simplicity and versatility of his rig is exactly what I am going for. With the elevated speaker and a great preamp, I can tackle most rooms without worrying about my sound and being able to hear myself. At least this is how I feel now....The experiment continues.
     
    Ric Vice likes this.
  8. Ric Vice

    Ric Vice Supporting Member

    Jul 2, 2005
    Olivette, Missouri
    Glad the Ischell and Headway EDB-2 work so well together. That's a substantial savings when compared to the Scheops CMC6/MK41
    combined, with the Really Nice Preamp which is over $2,000.00. :)
     
    MDrost1 likes this.
  9. I own an AC adaptor for the EDB-1, but I have never used it - only a quick test when I bought it. Battery life has not been a problem (with Ischell or C411), and being battery powered makes setting up less of a hassle.
     
    MDrost1 likes this.
  10. Ric Vice

    Ric Vice Supporting Member

    Jul 2, 2005
    Olivette, Missouri
    Good to know, it's apparent that the Ischell or C411 are very low drain mic's
     
    MDrost1 likes this.
  11. They are both electret condensers which means that only the FET needs power to make the low current capsule signal more loadable.
    Think of it a simple impedance buffer like the mint box buffer or the quick'n'dirty preamp from Francis Deck. The only difference is that the input impedance needs to be a lot higher for the condenser capsule than for a piezo transducer.
     
  12. The phantom also has to drive the inline 'preamp' which sits inside the XLR connector and provides balanced output in each case - obviously very efficient circuit designs!
     
  13. Ric Vice

    Ric Vice Supporting Member

    Jul 2, 2005
    Olivette, Missouri
    Indeed they are, provided the XJack
    suits your tailpiece. On my smaller 5/8’s Mirecourt bass it’s a very tight fit I’d preffer the single XLR with either the Headway or Grace Felix supplying the 48v Phantom Power. I realize this isn’t an option for everyone. The XJack is a good option for them.
     
  14. The phantom power (48 volts) has too much voltage for an electret (9-10 volts), so the main thing the adapter does is separating phantom power and signal, reduce the phantom power to 9 volts and re combine that with the signal. That could be done on various levels of sophistication. Such adapters are available inside an XLR jack and could even be found on eBay. An additional mic preamp would help to get an amp-friendly signal out of a mic capsule.
     
    Ric Vice likes this.
  15. Ric Vice

    Ric Vice Supporting Member

    Jul 2, 2005
    Olivette, Missouri
    Double Midi
    The Ischell X48C description indicates that it will run from 9/48 volts Phantom power, so the circuitry inside the jack apparently steps the voltage down to 9 volts as well as providing different EQ configurations.

    Ric
     
    Last edited: Apr 9, 2018

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