Question about DHD NTX-2009 Car Audio Amplifier

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Amp has 3 modes on it ,as a switch,what is this,it has a 2,3,4 channel mode,i have the gold dhd 1000watt x4 channel

My amp has a mode selector,2,3,4 mode switch built into the cross over section of the amp, it is the 1000watt 4 channel amp,which i have bridged into 2 channel driving 2x 12 inch pioneer svc 800watt subs,on my low level input i have 4 rca inputs which have an rca linked to it. MY QUESTION IS,WHAT MODE SHOULD I RUN THE AMP ON,TO REALLY MAKE MY WOOFERS POUND. OR WHAT DO YOU GUYS RECONMEND TO GET THE SUBS CRACKING,SO TO SPEAK.THE LPF IS @ 60HERTS,OF A PRE AMP WITH SUB MODE OUTPUT SWITCH SET AT 90HERTS,ITS A 7VOLT RMS PRE AMP. THE TROUBLE IS I FEEL THAT THE DHD NTX2009 COULD OFFER ME MORE THAN ITS DOING AT THE MOMENT. HELP HELP IT ,AT THE MOMENT GIVES ME JUST UNDER 140 DB,OFF A 2FARAD CAPACITOR. SEND A REPLY TO pgopichund@retailshopfittingservices.co.za

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  • guysaint Aug 22, 2007

    bridged into 2 channel from 250X4 into 500X2
    driving 2x800watt pioneer svc,how do i get this dhd ntx2009 to drive these spaekers at 2ohm stable?
    is it the wiring from the amp,
    or
    the wiring to the spaekers?
    obviously 2ohm is better performance in terms of bass power.
    help
    how do i get 2 ohm from this amp??????

  • regginalja2 Jan 30, 2009

    yes i have the same problem i bridged 1&2 to play two 10" bumper at 400 watts each and 3&4 to play top end but the bass keepindg on chippn out now only 2,3 and 4ch is working could u tell me what may have happen to ch1 and the amps is the same dhd 250watts x 4ch

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First thing 1000@4 means 250w per ch. which means150w usable power.the mode switch is only to reduce rca cables,use 2ch mode if only 1 pair rca available,60hz is a bit low for this amp,90 would work better.

Posted on Aug 22, 2007

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Hi this is amber I have 2x4 ohm qvc audiobahn abass2012P how would I correctly run them to get best bass n max power efficiency I have a soundstream Picasso 1000watt 4 channel bridge able amp to hook em up...


I assume you are replacing the built-in Audiobahn power amplifier with your 4 channel Soundstream amp. If so, you can set the Soundstream for bridge mode which should net you 2 high power channels of 250Wrms@4ohms or 500Wrms total power (if the speakers are quad VC), or alternatively, non bridged for 4x125Wrms (if the speakers are dual VC). You can see why below.
Next, you need to confirm each subwoofers coil configuration as follows: If each woofer is quad, there will be 8 connectors; if dual VC, then there will be 4 connectors. For dual VC, if each VC is 4ohm, you can choose between 8 or 2 ohms by series or parallel wiring. If each VC is 2 ohm, you can have 4 ohms in series to use. This can be determined with an ohm meter across one set of VC terminals. If you can get 4 ohm for each speaker, this will allow you to use the 2 channel bridged mode with each speaker getting the full 250W. If each VC is 2 ohm, use non bridged mode and run each of the 4 channels to each VC. For this case, use a 2 to 1 RCA jack to sum the two channels for each speaker on the amp's input side to make the signal 2 channel instead of 4 channel. Below are examples of quad and dual VC for reference only, the wiring may not match your setup which will depend on your VC resistance (impedance) measurement. Don't forget to set your HPF(High Pass Filter) as this is a subwoofer setup.

quad vc-bsudq2jd4xz1a3m0o2e0expj-1-4.jpg

dual vc-bsudq2jd4xz1a3m0o2e0expj-1-7.jpg

Nov 17, 2017 | Car Audio & Video

1 Answer

I have a QSC RMX 2450 in which both channels are driven even though the amp is in stereo mode and I am only sending a signal into input channel one. It acts as if the amp is in parallel mode but I have...


My thoughts are that the amp has a poor channel separation but usually you can only hear a very quiet trace of the sound through the undriven channel. I agree with Taurus and make sure that the switch is making contact and moving all the pins to the proper points. This is a Home stereo amp, it comes with an extended 6 year warranty if you register it, I would check into getting a warranty repair before doing anything to it! Looks like a nice quality piece, those dip switches are a little bit confusing but the way it's built it is necessary to have them. It has a Dual Mono amp section so there is no way that any sound can be crossing over unless the swithches are directing it. The only way that can happen is in Parallel or in Mono. You could be in Stereo / Mono which would input both channels and output 3 settings a 1, 2 in Stereo & a Mono, Try hooking a speaker up to the Mono/ Bridge outputs and see if it's louder than just hooked up to 1 or 2. Parallel inputs will give you Mono 1 & 2 with Bridge off, and might give you Mono 1 & 2 with a bridged Mono if the bridge is on, like 3 channels all mono with one getting twice as much power as the 1 & 2 will put out. Although they have it labeled to not use it in those settings it's possible to do. I can see why you would be checking the switches.
It may actually be labeled incorrectly , as strange as it seems, many Chinese products have been made with labeling errors. Plus and minus have been wrong on Asian Made car amps so it's not that inconceivable that this may have some incorrect settings shown?

Apr 03, 2013 | Car Audio & Video

1 Answer

CREDA FLASH PROGRAMMER 2S, I can programme the current time and the comfort / reduced mode, however when i set the slide switch to 'auto' all that is shown is 2 moons. According to the manual


Reset digital timers before programming to eliminate trace testing memories and restore full functionality

Make sure you're in correct mode fro programming: Time setting mode, with selector moved to top next to clock symbol

Compare your timer manual with Hagar manufacturer's generic manual for the 2-channel: English on page 3.
http://waterheatertimer.org/pdf/Hagar-monotron-200-2-channel-manual.pdf
http://www.credaheating.co.uk/assets/kb/operating_instructions/0/Flash_2S_Programmer_Instructions_Issue_1.pdf

Contact Creda
www.creda.heating.co.uk

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Mar 18, 2013 | Hardware & Accessories

1 Answer

1998 Chevy Suburban - service 4wd light comes on after running 4x4 for 2 mins


Well it could be the selector switch, but I doubt it.
Generally, the service light means something is not working that the computer controls. Solenoids and valves are a couple of possibilities.
The transfer case is shifted by solenoids commanded by the body computer based on the switch position on the dash.
You should be able to have a shop scan the body computer for trouble codes and proceed from there.
A basic code reader may not access the body computer.

Jul 05, 2012 | 1999 GMC Suburban

1 Answer

It was laying on the workbench in my kids stole the fusesWhat size fuses go in a koiiler model 9696 1000watt Max amp? To bridge this 4ch to 2 on the high input side. do you have to tie the input side??...


NO dont tie the inputs. Inputs stay just as they are. Outputs are where the bridging happens.
You amp specs are:
XM-9696 C/W 4 CHANNEL POWER CHROME/WHITE AMPLIFIER
MAX OUTPUT POWER (2 OHM): 200W X 4 = 800W
POWER OUTPUT: 90W X 4 @2 OHM (360W) LESS THAN 0.5% THD
60W X 4 @4 OHM (240W) LESS THAN 0.3% THD
BRIDGED 180W X 2CH @4 OHM

So lets take 800 watts and divide by 13Volts DC = 61.54 Amps
So if there are 2 fuses start with 30 amp. To play it safe you could use 25 amps and if they blow try a 30. Now if the 30 blows you may need to take
another look at your wiring. I think 30 will be fine though.

Apr 02, 2011 | Car Audio & Video

1 Answer

With a kenwood amp 1000watt 170rms x 2 ,how should i really wire these up!


You haven't supplied any model #s so its impossible to say - but Kenwoods don't normally like 2 ohm mono loads.

You're going to have to either use one channel @ 2 ohm... or use each subwoofer per channel on the amp.

For a 2 Ohm mono load - wire all positives and all negatives from each sub to the amplifier's respective (bridged) terminals.

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Oct 07, 2010 | Sony Xplod (P589) Car Subwoofer

1 Answer

How do I use this amp in one or 2 channel modes. The switch on the amp only shows 3 and 5 channel operation?


Run it in 3 channel with 1 to subs and the other 2 to the right and left front speakers or just don't hook up the channels you don't want to use.
It would be a shame to not use this amp to its full potential

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1 Answer

I own an old Sanyo VCR VWM 680. I have not used it for quite sometime & lost the remote control. I need to use it as my cable channel selector. Since its in the VCR mode, i cannot switch it to TV...


actually the tuner is in the vcr mode.
to get the channels to set,you have to autoprogram the tuner,and then they can be changed using the up down buttons.
rca make a universal remote for 10 bucks that will run that vcr

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1 Answer

Hello. I have one (1) XS-L1035 being powered by a JBL gts 180X 2/1 channel amp. The sub works fine if i power two(2) subs thru 2 channels BUT if I try to bridge the power to one sub the amp cuts out. Is it...


It sounds like the problem is with the amp. try using the other sub in bridged mode and see if it still turns it off. If it still turns off then its definitely the amp. In 2 channel mode you are using each channel at 4 ohms right? and in bridged mode to 1 speaker it should be throwing a ton of power on a 4 ohm load as well,it should work fine bro -its gotta be the amp

Jan 30, 2010 | Sony XS-L1035 Car Subwoofer

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