Darkglass Microtubes 900 2 ohm problem HELP

Discussion in 'Amps and Cabs [BG]' started by Joey Perron, Aug 25, 2018.

  1. Joey Perron

    Joey Perron

    Aug 25, 2018
    I received a Darkglass M900 about a month ago and out the box it sounded a tad funky but I had a tour coming up and it seemed to be working alright. I normally run 2 Ampeg 810e cabs but depending on size of venue I tend to run 1 a lot of the times lately. I have a Ampeg 210 at home and the head sounded a little farty and muddy but I figured an 810e at a louder volume tweaked a bit in the eq would help. My 810s live in a trailer or rehearsal space so I didn’t have a chance to really reference. First two nights I ran the head into just 1 810 at 4ohms and while it worked and had volume it still sounded weird and like it didn’t have much thick low end or any substantial feeling to the tone. I had nothing dimed on the head and most of the knobs I’d say were around the Noon or even 10 o’clock range. 3-4 nights into the tour I finally had a big enough stage to run both cabs so I wired up and sound checked and the head kept cutting in and out. “Clicking” sound would engage and disengage sound. The head never turned off but it sounded like it did. Every 10 seconds it’d cut out then come back. The back of the head was on 2 ohms. Speakons connecting both cabs. I’ve never had any problem doing 2 ohms with these cabs with other heads (peavey mesa orange Ampeg). I feel like maybe I had a defective head but when I contacted the darkglass tech he said to much 80hz can throw the head out of 2ohms? I have the bass knob pretty low, passive pickups, settings low with no additional gain or boost pedals. They didn’t seem to want to exchange sense the tech didn’t respond to any following emails. Has anyone else had a m900 do similar things? I was able to try another m900 (a friends) and it sounded much different. I wasn’t able to see if it’d do 2ohms but it worked better then mine for sure. If I hear nothing from Darkglass soon I may sell the head for a Mesa Subway that can do 2 ohms. I was also curious if maybe I unhooked an 810 speaker I could change the ohms a bit and maybe the m900 would work better? I’m kinda lost at this point and went back to my old Peavey head and boxed the darkglass. Any and all help is welcome. This is my first post on talk bass btw hah.
     
  2. ddnidd1

    ddnidd1 Supporting Member

    Try sending a PM to @Darkglass - Doug Castro - owner of Darkglass.
     
    Joey Perron likes this.
  3. Darkglass

    Darkglass Gold Supporting Member Commercial User

    Dec 10, 2008
    Helsinki, Finland
    Douglas Castro, Founder: darkglass.com
    Hi! If the issue was present with 110VAC, it might be the old power amp module.

    Please write [email protected], we might have to upgrade you to the new power amp module (free of charge).

    Please include your location and serial number.

    Kind regrads
     
  4. Joey Perron

    Joey Perron

    Aug 25, 2018
    Hey Doug! The tech that emailed me back said that it unfortunately wasn’t the power amp module since this is one of the newer m900 Medusa models. I’ll email support now with the serial number and location and details. Thanks Doug!
     
  5. BassmanPaul

    BassmanPaul Inactive

    Kind regrads? :roflmao:
     
  6. tripp2k

    tripp2k

    Oct 31, 2010
    DFW-TX
    So, what was the outcome?
     
    IronLung1986 likes this.
  7. Joey Perron

    Joey Perron

    Aug 25, 2018
    Got a new one from them and it had the same issues so I sold it and went back to my old peaveys.
     
    tripp2k likes this.
  8. jeff7bass

    jeff7bass Inactive

    Apr 9, 2009
    knappymer and Joey Perron like this.
  9. Joey Perron

    Joey Perron

    Aug 25, 2018
    jeff7bass likes this.
  10. Biggumz

    Biggumz

    Sep 1, 2019
    How should I hook the 900v2 up to my ampeg 810E? Both cables at 4 ohms? Dumb question of the day.
     
  11. scottfeldstein

    scottfeldstein Roots and fifths and a little extra. Supporting Member

    Jun 20, 2011
    West Bend, Wisconsin
    Doug, if you're ever wondering if participating in these forums does any good for your business, let me say this. People see this stuff. They know you're doing right by your customers. I saw it. I don't currently own any Darkglass products (I did like my B3K, though, when I had it!) but I'll always have in the back of my mind that these guys take care of their customers. So thanks!
     
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  12. Darkglass

    Darkglass Gold Supporting Member Commercial User

    Dec 10, 2008
    Helsinki, Finland
    Douglas Castro, Founder: darkglass.com
    Thank you very much!

    It's the least I can do to be honest.

    Kind regards!
     
  13. Darkglass

    Darkglass Gold Supporting Member Commercial User

    Dec 10, 2008
    Helsinki, Finland
    Douglas Castro, Founder: darkglass.com
    Hi! If the cabinet has 4 ohm impedance you don't really need to do anything.

    If it's 2 ohm you'll just have to enable the 2 ohm mode from the rear panel.
     
    DiscoRiceJ likes this.
  14. Wasnex

    Wasnex

    Dec 25, 2011
    You should only need one cable.
     
  15. Biggumz

    Biggumz

    Sep 1, 2019
    To use all 8 speakers?
     
  16. Wasnex

    Wasnex

    Dec 25, 2011
    Yep. The speakOn connectors and the bottom two 1/4" jacks are all connected in parallel.

    The top 1/4" jack is switching. When you plug into the top jack, it breaks the cab into two 8 ohm circuits consisting of four speakers each.

    If you want to biamp or run dual mono, plug into the top jack, and then plug into any other jack. If you are running full range, plug into one of the speakON jacks or one of the bottom 1/4" jacks. With your amp, it's advised to use speakON. See page 3. of the attached manual.

    [​IMG]
     

    Attached Files:

  17. Biggumz

    Biggumz

    Sep 1, 2019
    Thank you
     
    Wasnex likes this.
  18. Wasnex

    Wasnex

    Dec 25, 2011

    :thumbsup: FYI, If you need more than one cable, something is wrong with your cab. It's not unusual for the switching jacks to go bad.