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E-machine-Home professional. no audio works. What is output impedance for audio jacks??

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It is very low output, and needs an amplified speaker

Posted on Oct 21, 2013

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1 Answer

Connecting a sound bar


Typically you will connect the RCA audio output jacks to the audio input jacks on the sound bar, but if your television does not have RCA audio output, you may have to buy additional hardware to make the soundbar work. If your TV has a headphone jack, then you will need to purchase an 1/8" Headphone connector to RCA Connector cable from a local electronics or audio store. If your TV doens't have any audio outputs, you may need to purchase a digital tuner box and connect it to your TV and soundbar.

Jul 19, 2014 | Sharp home theater system HT-SB300 User...

1 Answer

I want to hook two speakers on each terminal (L/R).


The correct way would be to hook only one speaker to the powered outputs and use PRE-OUT outputs to connect separate amplifier (or active speakers).

For 2 speakers to work connected to the same powered output of receiver, their impedance would need to be high enough. Yamaha receivers officially support impedance >= 4 ohm for front speakers. If you would connect 2 different 8 ohm speakers, the combined impedance could be theoreticcaly 4 ohm, but that depends on many parameters. On low volumes it should work, but could overload the receiver if used for louder volumes.

Also note that the impedance is a function of frequency (specific to every speaker), so for different frequencies the power from receiver would be devided differently between the speakers and the sound would not be good.

Sep 22, 2013 | Yamaha RX-V671 7.1 Home Theater Receiver...

1 Answer

Rca tv ..how to hook up to home speakers


Unless the set has actual audio outputs it should not be done.

The set will have a very low audio output not intended for external systems--if you hook to wrong impedance speakers volume either will not work, be very low or even damage the audio circuit in the set

Mar 28, 2012 | RCA 27V530T 27" TV

1 Answer

Just got shure sm58, plug it into my starsinger on the tele but sounds is very low compared to the crappy mics? i plugged up a mixer box and can get more sound now but should it work fine with the...


The SM58 uses balanced output. If the starsinger uses a 1/4 inch jack, it is unbalanced input and probbly requires a high impedance rather than the low impedance SM58 mic. You can get an impedance transformer to fix that problem.

Dec 13, 2011 | Shure SM58 Professional Microphone

1 Answer

How to connect external speakers to this tv. Only output jacks exist for audio.


Most of the TV's do not have a speaker output and so you will need to open the set and take the speaker connect to be meshed along with a impedance matching.
You can connect with a switch wherein the TV speakers can be switched OFF and the external speaker connected . If not the external speaker if connected in parallel must not bring down the impedance to a lower level not supported by the output IC.
The other option is to use the output AV to connect to an amplifier and speaker. ( Your Audio system)

Feb 08, 2011 | Televison & Video

1 Answer

How do i connect my headphones? when i use a red/white tulip - jack out cable and then connect the headphones jackplug there is no sound, using the 'variable sound out'. should i use an amplifier like a...


If your TV does not have headphone jack outlet, then there is not much you can do, the Audio line level out RED and WHTIE RCA jaks are not made to drive headphone directly, it does not have enough power to drive low impedance load such as headphone which has about 8~32 Ohms impedance, the line out RCA is made to drive high impedance load 20,000 Ohms and higher.
If you want to use headphone, what you can do is to get cheap powered PC speaker system that has headphone out jack, then just connect the powered PC speaker to the audio line out of the TV, but the TV must have an option on the audio setup to turn off the built-in speakers.

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Jun 12, 2010 | LG 26LC2R 26 in. HD-Ready LCD Television

1 Answer

I have a white female rca and a red female rca which means right and left speakers hanging out of the back of my car audio cassette player. i can't anything out of them, nor can i get anything to go...


Hello joebobstgeor,

I wasn't able to lookup a manual for the Sharp GB960. In fact, manuals for any Sharp car audio product was woefully absent.

Try connecting the cables to the input of an amplifier. Female RCA jacks are used for low-level (preamplifier) outputs for subwoofers, sound processors, and additional amps. The impedance of the output is typically in the 20-25Kohm range and would not produce any sound in speakers or even low impedance headphones.

It's also possible that the RCA cables are an "AUX" input to the receiver and not an output. Although many of the mobile audio manufacturers are now using front-mounted phone mini-jacks as "AUX" inputs, some still have rear mounted RCA's.

Hope this helps.

May 18, 2009 | Sharp Car Audio & Video

3 Answers

Plugging in keyboard


MIDI only carries digital information, not audio. Midi is used to communicate patch settings and note value information. If you want the recording to know the note value, then you should use midi. This is useful if you want to do things like adding rythm tracks, etc.

If your keyboard has audio/line out (as opposed to headphone out), use that, as it is matched much better in impedance. If it doesn't have audio/line out, then you can use the headphone jack, but you will have to turn the attenuation way down because the headphone jack impedance is much higher. This will tend to distort on the recording if you are not careful.

The first thing to know about digital recording is that distortion is much more of a problem. I won't get into the theory of this, just know that impedance mismatching is more of a problem with digital.

Sep 08, 2008 | Tascam 2488 Portastudio Multitrack...

1 Answer

Problem adding wsp155 wireless speakers.


You must check with the instalation gude for the wireless speaker to see if the connection to the reciver is a high impedence or low impedence... If its like most wireless set-ups its going to be a high impedence output from the reciver to the transmitter part of the speakers. That would be from the RCA jacks in the back of the reciver maked line out or tape out. If you want to use them for a specific speaker output , some recivers have an output jack that would be labeled center sperker out but would be an RCA type jack ect ect. If your reciver dosent have that you can in a higher end audio store get an adaptor to convert the speaker output to a high impedence, But I dont recomend that as some of the adaptors do cause excessive strain on the output section of the amp or reciver.. If you buy a good one though you should be fine.. You get what you pay for.. Good Luck

Aug 06, 2006 | RCA WSP150 Main / Stereo Speaker

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