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Db opera live 41.15 sub

Active subwoofer

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Posted on Jan 02, 2017

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SOURCE: Can't find sub levels on the menu

on some jvc models they don't specify if it has subwoofer level controls. On the one that i had i had to hold down the audio button for like 3 sec then it switched me to bass treble and subwoofer make sure that you have your rca jacks plugged into the subwoofer outlet also

Posted on May 20, 2009

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I have the following setup: AV Receiver: Pioneer


Very common problem with today's receivers. Receivers made today don't have a true preamp section in the amplifier and do not amplify the sound to the extent of an older receiver. I have large 15" front speakers on my system, and have stuck with my 15 year old receiver just because I know that a new receiver will not have the power to drive them well. Many of the newer receivers need to be turned up to 50-60% before you can even hear anything from the speakers.

Aug 08, 2013 | Pioneer Audio Players & Recorders

1 Answer

How to wire a db drive sub k512D2 to a monoblock db drive A31500.1D


run a wire to positive on one coil do the same to negative on other coil then take a single wire and hook the remaining positive & negative connectors together with single wire it should yield a 4 ohm load

Feb 13, 2013 | DB Drive Car Audio & Video

1 Answer

I'm about to hook up my KLH to an Onkyo Receiver with Audyssey sound features. 2 questions: it asks me to set my sub to 75 DB. Since my volume dial goes 0-10, which number maps to 75 DB? Also, what...


I think it wants you to raise the volume high enough on the sub so IT can hear at least 75dB. It can always adjust the sub downward if necessary. Max it out at the sub and let Audyssey deal with the adjustment.

Your crossover frequency selection would be a piont below which you want the sub to activate. It depends on the bass capabilities of your other speakers. You want some overlap so there's no droop in the crossover region where your main speakers roll off.

Jul 13, 2011 | KLH ASW10-120 Subwoofer

1 Answer

Can i hook this amp to a 2 channle out put stereo?


Sure. Specs are listed below. I think it's designed for regular 2-channel input, isn't it?

jturcotte_41.jpg

Front Channels: 100 W RMS x 2 @ 1.5 ohm-4 ohm (11V-14.5V)
  • Rear Channels: 25 W RMS x 2 @ 1.5 ohm-4 ohm(11V-14.5V)
  • Subwoofer Channel: 250 W RMS @ 1.5 ohm-4 ohm (11V-14.5V)
  • THD at Rated Power: <0.03% @ 4 ohm (F&R), <0.05% @ 4 ohm (Sub)
  • S/N Ratio (F&R): >108.5 dB below rated power S/N Ratio (Sub): >95 dB below rated power
  • Frequency Response (front and rear): 5 Hz-30 KHz (+0, -1dB)
  • Frequency Response (sub channel): 5 Hz-500 Hz (+0, -1dB)
  • Damping Factor (front and rear): >200 @ 4 ohm/50 Hz
  • Damping Factor (sub channel): >500 @ 4 ohm/50 Hz
  • Input Range: switchable from 200mV-2V RMS to 800mV-8V RMS
  • Differential-Balanced Input Topology: (3 pairs of inputs)
  • Front Crossover: fully-variable (50 Hz-5 KHz), selectable- slope BP or HP (12 or 24 dB per octave)
  • Rear Crossover: fully-variable (50 Hz-5 KHz), selectable- slope HP (12 or 24 dB per octave)
  • Sub Crossover: fully-variable (40-200 Hz), selectable-slope LP (12 or 24 dB per octave)
  • Preamp Output: 2-channel (full-range or LP)
  • Bass EQ: Variable boost up to 15db
  • Infrasonic Filter: defeatable 24dB/octave at 30 Hz
  • Left minus Right Ambience Circuit: ambient effect for rear channels
  • Front and rear speaker output connections: accept up to 8ga. wire
  • Dual mono subwoofer output connections: accept up to 8ga. wire
  • +12V and Ground connections: accept up to 4ga. Wire
  • Dimensions: 19.7"L x 9.25"W x 2.36"H
  • Dec 02, 2010 | Jl Audio 500/5 Car Audio Amplifier

    1 Answer

    How much airspace do i need for my subwoofer and should i port the box


    For optimal performance there is really only one size for the box .Firstly, you get two different types of subwoofers, an open air, or closed air sub. If it is an open air sub ( hole with mesh in the center of the magnet) no ports are required, and the box should be sealed on the inside with silicone sealant. If it is a closed air sub ( no hole in the magnet) you need a 50mm port about 120mm long. Box size will be 11 inches x 11 inches x 11 inches. Hope this helps

    Jun 26, 2010 | DB Drive SP10.1 Car Subwoofer

    1 Answer

    I have a hole in my brand new db drive sub cone what do I do?


    Take it to the store from where you purchased this system and they should refund your money or exchange the item.

    May 13, 2010 | DB Drive SP10D.1 Car Subwoofer

    1 Answer

    How manny watts per channel??


    I'm guessing the 200w are the Speakers maximum input, right?
    Is the sub passive or active(=integrated Amp)?

    If it's a passive sub:
    If it's a 2-Channel Amplifier, you're talking about, you won't be able to connect all 3 - unless you can live with one speaker being significantly louder than the other or your amplifier going up in smoke...

    As to the power required, if it's 250W PER CHANNEL the amp will blow your speakers, if it's 250W combined you may not be able to drive them to their absolute limit but they will be loud enough (they probably reach their db-limit with less than 200w but if they reach it with 200, you'll only get ~6db less than that with 125w per channel)

    The Watt-numbers on (passive) speakers only tell you how much they can take before they are damaged, the relevant numbers for your problem are the efficiency (the unit is db/W or db/2,83V) and the maximum db-level (most floorstands can produce between 100 and 110 db at one meter distance)

    If your speaker produces i.e. 87db/W at 1 meter distance (which is the standard measuring distance), it will produce ~97db at 10W, ~107 at 100W, etc. - unless it reaches it's limit before that. Most speakers can take a lot more power, than they need to reach their limit but they won't get any louder if you keep turning up the volume beyond that (they'll probably produce more distortions though, so don't)


    As to the sub:
    if it's passive, you'll need another amp (there are special amp-modules for subs, but any amp with enough power will do)

    if it's active, you can connect it to the sub-out of your preamp (I'm guessing the PA Amp you mention is a Main Amp, not an integrated one) or your integrated amp via cinch (a tape-out works too)

    OR you can connect it to the speaker outputs and than connect the speakers to the sub - in that case the sub is still NOT driven by your main amp but you can use it's crossover to separate low frequencies (--> SUB only) form higher frequencies (--> SPEAKERS only).

    Most active subs can be connected both ways, if yours can't your stuck with one.

    Rarely there is a third way, which only works if your sub supports it and if you either have seperate Pre- and Main-Amp or if your integrated amp has a Pre-Out and a Main-In (in that case in can be split into preamp and main amp)

    IF you want to use your subs Crossover (which is good idea, provided it has one), you'll have to connect it between Amp and Speakers (works with allmost all active subs) or between preamp and main amp (works only with a few)



    I hope this is helpful

    Jan (Hamburg, Federal Republic of Krautistan)

    Mar 17, 2010 | Radio Shack 250 Watt PA Amplifier...

    2 Answers

    Want to connect my RCA sub to my yamaha htr-5940 reciever


    Subwoofer needs to be enabled through menu on Yamaha. LINE OUT might be turned off or Subwoofer volume set to low or off... (-db level) kinda thing...speaker wires are usually always live etc...

    Feb 03, 2009 | Yamaha HTR-5940 Receiver

    1 Answer

    Tuning speaker system denon avr 2400


    You need to check on the operation of your receiver regarding the use of the subwoofer output line. If it does not satisfy you, better get a better receiver or A/V control pre-amp system with lots of features in the subwoofer circuitry. Google (internet) might help you with your specific model.

    Sep 24, 2008 | Denon AVR-2400 Receiver

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