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Eden 800 question-I am so freaking confused

Discussion in 'Amps and Cabs [BG]' started by TimBosby, Aug 12, 2005.


  1. TimBosby

    TimBosby Gold Supporting Member

    Dec 19, 2004
    Omaha, NE, USA
    OK, I've had my Eden 800 for a while now and I love it. I just started using it with my new Schroeder 1212 in bridged mono mode and I love it.

    My question is...what the hell do you do with the biamp/stereo switch in bridged mono mode?

    I don't have the amp in front of me (it's at someone else's house right now) so I can't remember if the switch is pushed in or out. I can't even remember if there is an LED associated with this switch but if there is, I do know that that LED is not on. However I have it configured-it sounds fine-but one time I pushed the switch (again don't remember if I pushed it in or out) and the bass cut completely--I read on the Eden forums that this is bad...and it sounded like ass so I changed it back to how it was. But what is confusing as hell to me is that the Eden manual says:

    Stereo / Bi-Amp Mode switch--This switch sits just behind the panel in the stereo mode it moves forward when switched to Bi-Amp mode. You will need a pen tip to engage the switch.
    (that's what it says--horrible wording on the part of Eden, not me)

    So it sounds to me like you would want your amp in STEREO mode when running bridged MONO. Which seems weird and counterintuitive....

    I guess the bottom line is, whatever I did to the switch that one time for just a couple minutes was bad because it cut all the bass out...it just is confusing me because I thought I had the switch "out" so to speak and that would indicate "bi amp" mode according to the manual but I keep reading DO NOT RUN IN BI AMP MODE WHILE BRIDGED MONO (which would by default mean you have to run in STEREO mode in bridged MONO which again seems completely counterintuitive)

    The other thing I'd like to know more about is something I read about the balance knob being turned all the way to the left in bridged mono mode and that definitely increasing the volume. The amp doesn't seem to be QUITE as powerful as I thought it would be at 800 watts (at least with my quieter basses) so maybe I should knock that volume knob to the left...yes...no...maybe?

    By the way, Schroeder cabs rock...

    Any help appreciated... you guys always answer my questions so well!!! :)

    Peace
    -Tim
     
  2. Chef

    Chef Moderator Staff Member Supporting Member

    May 23, 2004
    Columbia MO
    Staff Reviewer; Bass Gear Magazine
    From the Eden manual, which you can download from thier website:



    Bi-Amp Switch – Engages Bi-Amp Mode. This mode is ON when the
    switch is UP (sticking out from the face plate slightly).
    EXTREMELY IMPORTANT NOTE: Do NOT engage bi-amp
    operation in combination with Mono Bridge. Doing so may cause
    damage to your amplifier and possibly your speakers! Also, it will sound
    REALLY BAD!
    Balance Control – Balances power between the two amplifiers: High (or
    Left) and Low (or Right). This is useful when using cabinets of different
    impedance &/or efficiency.
    Crossover – Determines the crossover point between amplifiers when in Bi-
    Amp Mode. In all other modes of operation, this feature is defeated.
    Mono Bridge Switch – Engages Bridge Mono Operation. To engage, push
    the switch IN.
    Mono Bridge Indicator – Lights to show that the amp is in Bridge Mono
    mode.
    EXTREMELY IMPORTANT NOTE: Do NOT engage Mono Bridge in
    combination with bi-amp operation. Doing so may cause damage to
    your amplifier and possibly your speakers! And, as we said earlier, it
    will sound REALLY BAD.
    Bridge Mono Output – This is a single NL-4 connector to be used ONLY
    in Bridge Mono operation. . The total speaker load impedance should not go
    below 4 ohms.
    INITIAL SET UP
    Before turning your amplifier ON, you must first determine which mode of
    operation you wish to use. It is critical to the safety of your amplifier that
    you make all connections correctly, and that you set the switches to the
    proper position. Failure to do so may result in damage to your amplifier
    &/or speakers!
    Dual Mono (Stereo) Operation:
    Connect speakers to the Left and Right amplifier outputs ONLY. Do NOT
    use the Mono Bridge Output. The total impedance of all speakers connected
    to each of the amplifiers should not exceed 2 Ohms.
    Make sure that the Bi-amp and Bridge Mono switches are both OFF. In
    the OFF position, both switches should be flush with the face of the
    amplifier.
    If you are using stereo effects, the amplifiers will each receive the
    appropriate signals. If not, both amplifiers will receive the same signal.
    If necessary, use the balance knob to compensate for differences between the
    two sets of speakers. If not, it should be in the 12:00 position.
    Bridge Mode Operation:
    Connect speaker(s) to the Bridge Mono output ONLY. Do NOT use the
    individual amplifier outputs. The total impedance of all speakers should not
    exceed 4 Ohms.
    Engage Bridge Mode by depressing the switch on the front panel. You can
    do this using the tip of a pin, a small screwdriver, etc. In the ON position,
    the switch should be slightly recessed into the face of the amplifier. When
    you turn the amplifier ON, the Bridge Mode Indicator will light.
    12
    Make sure the Bi-amp switch is OFF, or flush with the panel.
    Set the Balance control to the 12:00 position.
    Bi-Amp Operation:
    Connect the appropriate speakers to each individual amplifier Output.
    Engage the Bi-Amp Operation switch. When ON, the switch will stick out
    slightly from the face of the amplifier.
    Make sure the Bridge Mono switch is OFF, or flush with the panel.
    Use the Crossover control to determine which frequencies will go to the
    speakers. Because bass frequencies require far more power to reproduce the
    treble frequencies, we suggest that you start out low (or left) on the dial. But
    it’s only a suggestion. We gave you a crossover control so you could make
    your own decision. (You’re welcome!)
    If necessary, us the Balance control to balance the volume between the low
    and high speakers.
    IMPORTANT NOTES: Never, and we mean NEVER, attempt to do
    any of the following:
    • Use Bi-Amp and Bridge Mono modes at the same time.
    • Use Inappropriate Outputs to connect speakers.
    • Switch modes of operation while the amplifier is on.
    • Connect both individual amplifier outputs to the same speaker.
    (That’s what Bridge Mono is for.)
    Failure to follow these precautions can cause significant damage to your
    amplifier &/or speakers. We’re serious about this. Pay attention.
     
  3. TimBosby

    TimBosby Gold Supporting Member

    Dec 19, 2004
    Omaha, NE, USA
    Thank you, I do have the manual for my version of the WT 800, which is a couple years old. What you just gave me was the manual for the WT 800B--I noticed they did add significantly more information about Bridged Mono mode...something that the manual I have is severely lacking.
     
  4. Doug Parent

    Doug Parent Supporting Member

    May 31, 2004
    San Diego, Ca.
    Dealer Nordstrand Pickups.
    My old WT800 was the same way, in bridge mono the balance knob turned all the way left was louder-which is where I left it.

    The bridge mono basically works by summing the two parts of a stereo amp together. (Very basic analogy) This is actually pretty intuitive if you know this fact. This is what the bridge mono switch does.

    Engaging the bi-amp mode while bridged is a no-no.

    Adjusting the input gain is important if your going to get the most out of that amp.

    Great head, enjoy.
     
  5. TimBosby

    TimBosby Gold Supporting Member

    Dec 19, 2004
    Omaha, NE, USA
    So for the very brief amount of time when I it sounded flat and bassless, I must have had the bi-amp switch engaged. It was only for a few seconds though so I don't think it caused any harm.

    The thing that is confounding me is that my memory and what the Eden manual is telling me about the position of the switches are in conflict with each other.

    Is there an LED on the Bi Amp / Stereo switch?
    Someone help me out with that--my Eden is at someone else's house right now
     
  6. Chef

    Chef Moderator Staff Member Supporting Member

    May 23, 2004
    Columbia MO
    Staff Reviewer; Bass Gear Magazine
    Again, from the manual above:

    Make sure that the Bi-amp and Bridge Mono switches are both OFF. In
    the OFF position, both switches should be flush with the face of the
    amplifier.

    This will not be as confusing if you print the manual and are with the amp face to face.
     
  7. TimBosby

    TimBosby Gold Supporting Member

    Dec 19, 2004
    Omaha, NE, USA
    I run in Bridge Mono mode so my Bridge Mono switch is on.

    Pretty sure the Bi Amp switch is flush with the panel because I've been getting a great sound out of it and for the two seconds I had the Bi Amp switch on it sounded horrible so I turned it off right away.
     
  8. Low Class

    Low Class Supporting Member

    Jul 4, 2005
    Orange Park, Florida
    Isn't the Schroeder a 4 ohm cabinet? If so, your WT800 will only run safely at 8 ohms bridged.
     
  9. TimBosby

    TimBosby Gold Supporting Member

    Dec 19, 2004
    Omaha, NE, USA
    No, I bought an 8 ohm Schroeder 1212 from Jorg.

    You're thinking of the 1210--that is almost exclusively a 4 ohm cab but the one I have comes in either and I of course chose the 8.