Question about Technical Hifi IA-B750 / IA-S750 Amplifier

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How do I know if my subwoofer output is blown?

I have a Technical Pro IA-S750 and when I have it on any of the channels I get a garrgled sound coming from the subwoofer and I can't get it to put out the bass to the song that's playing. Is there any way to fix this?

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  •  Grubhead
    Grubhead May 11, 2010

    Is it a powered subwoofer?

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Throw the damn thing away

Posted on Feb 16, 2009

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1 Answer

Evrything hookup there is no sound iget a good signal in the back of the sub so whats the problem


try connecting a speaker to the sub output terminals at low volume and see if it has loaded output, if it works , your subwoofers voice coil is open/blown

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Hello i have a s master digital amplifier model number SA-WSF200. Suddenly the right speaker a subwoofer stoped working. I tried plugging the right speaker into the left speaker output on the amp and it...


i dont know if amp has fuse for each channel, but they would be easy to see.. otherwise that baby has a blown component or two on a pc board, maybe an output power transistor of capacitor failed.
Last time i went to a shop it was like $100 plus parts for a similar repair.
I recomend sending Sony support an email and see what they say before you take it anywhere as well..

Dec 04, 2013 | Audio Players & Recorders

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2010 VW CC factory stereo amp popping sound


If the amplifier itself is making the popping sound I suggest you disconnect it immediately, as it could be an electrical short within the amp. If the popping sound is actually coming from the speakers, it could be due to a crossed wire, blown amp channel, or blown speaker. If you posses the technical know-how, you can test the amp channel and speaker by connecting a different speaker to the channel responsible for the popping sound. If the new speaker makes the same popping noise then it is most likely a blown channel. I hope this helps =)

Sep 24, 2013 | JVC AM FM CD DET FACE CAR STEREO

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There is no sound from left speaker


The audio output stage on the left channel has failed or blown a fuse. Check the speaker wires carefully, if okay! I recommend a pro to examine the receiver.

Apr 08, 2012 | Harman Kardon AVR 225 Receiver

1 Answer

CHANNEL 1 DOESN'T. WORK. WHAT CAN IT BE?


Try changing your RCA leads, they may me faulty, if that doesn't work you probably Have a blown output amp

Aug 20, 2011 | Technical Pro TA-1250 Amplifier

1 Answer

Someone is trying to sell me a Panasonic Home Theater system SC-HT900 from year 2005 for $200.00 Is it a good system, is it also good for listening to classic and jazz or just for movies? how is the CD...


Hi,
here it is some tech info ..it is a fair price for 2.hand unit...
as ebay has the similar prices..it seems to be a good deal...


Take care and please Remember to rate/vote and give me 4 Thumbs Up
for Helping out the Community :)

Hope this helps!

----------------
Product Features and Technical Details
  • Dolby Digital, Dolby Pro Logic II, and DTS-decoding home theater receiver with 5 speakers and a powered subwoofer
  • 35 watts per channel x 4 "tallboy" speakers, 140 watts for the center channel, and 150 watts for the subwoofer
  • High-resolution DVD-Audio playback; JPEG, MP3, and WMA CD playback
  • Magnetic shielding for distortion-free placement near a TV or computer monitor
  • Includes digital FM/AM tuner and a universal remote control
Technical Details
  • Brand Name: Panasonic
  • Model: SC-HT900
  • Output Wattage: 390
  • Component Type: Home theater system
  • Audio Output Mode: Surround Sound
  • Surround Sound Effects: Super Surround Sound
  • DVD Type: DVD changer
  • Built In Decoder: Dolby Pro Logic II, Dolby Digital, DTS decoder
  • Remote Control Description: Universal remote control
  • Optical Digital Input: Yes
  • Audio Input: None
  • Tuner Technology: Digital
  • Radio Bands Supported: AM/FM

Jun 21, 2011 | Panasonic Home Theater System System

2 Answers

I am not able to hear the dialog while playing DVDs. The background is great and comes through all 5 speakers, however, to be able to listen to the dialog, I have to switch over to 2-channel or Stereo. ...


Well let me first ask is the center chanel working? or properly hooked up. Cause most of the times when in 5.1 the talking or "dialog" as you put it comes only through the center channel its just kinda how they do it. Listen to see if the center channel is working. if you are unsure try hooking up a speaker that you know works into the center channel speaker output. If no sound comes out then the reciever possible has blown its center channel. Please follow up with a comment and i will be glad to assist you further thanks, Midwes-tek

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1 Answer

7.1 channel onkyo home theater -- no sound out of subwoofer


You might try different listening modes; Some modes (Direct, DTS, Dolby - though I'm not sure which, offhand) require a seperate LFE track for sound to be output by the subwoofer.

:)

Nov 25, 2008 | Onkyo 630-Watt 7.1 Channel Home Theater...

1 Answer

Subwoofer: Active or non active?


Hello Smegboy,

Yes, you are right. This receiver is rated at 100WRMS output in all 5 channels (2-front, 1-center and 2-surround) while in Dolby Pro Logic operation. The subwoofer output is line level only (not amplified), which means you need a powered subwoofer to be connected to this output. A non-powered subwoofer could be used but, you need an additional amplifier connected to the subwwofer output from the receiver to drive it.
Let me know if this helps.

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Dec 29, 2007 | Technics SA-AX710

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