Question about Theater Research TR-2830 Main / Stereo Speaker

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General guestion just wondering if these speakers are magnetically shielded

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Yes they are

Posted on Jan 18, 2009

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Are my tr-2810 tower speakers shielded? Will they ruin my television?


if you are using lcd monitor then it will not do any damage to it. however, if it is a crt type of monitor then yes it can or may damage the monitor. if the speakers do not that they are shielded then you should assume that they are not and should be placed away from the crt monitor because the speakers magnetic field will affect the crt magnetic filed used to display the picture on the screen. speakers with high magnetic fields and are unshielded should kept away from crt type monitors! lcd monitors do not use magnetic fields to bring a picture to the screen so it will not affect these types of monitors.
you nay also check your user's or owner's manual for more information on you speakers and maybe check any of the manufactures web site as well. but it better safe the sorry to keep the speakers away from the monitor in question.

Sep 01, 2011 | Theater Research TR-2810 Main / Stereo...

1 Answer

I have bought an optical fibre cable to connect from my jamo a305 to my new sony nx810 tv and im getting a buzzing sound, there are 2 optical fibre outputs on the back of the amp, which one do i connect it...


Have you looked at the manuals?

http://www.retrevo.com/search?q=sony+nx810

A TV won't run external speakers directly. Besides, the TV-related audio should originate at, say, the cable Box, and go straight to your (presumed) AV receiver for the best possible decoding and reproduction.


Buzzing is an analog phenomenon and is NOT carried by optical cable in any case.

Buzzing is usally AC line noise leaking into an un-shielded cable somewhere or a floating ground. If the AC plug is reversible, try that. Sometimes the buzz is from an attached device. Make sure all audio cables are plugged in tightly at each end and routed away from or at right angles to any power cords and away from other sources of strong magnetic fields like TV's. I've also seen variable track lights induce noise but it's usually minor.

Try rotating the power cord in the wall outlet.

If it still buzzes with no cables or anything external attached there's an internal problem.

Disconnect the input(s) and see if it hums in the absence of an audio source. A bad audio cable shield or unwisely-routed audio cables will allow entrance of unwanted signals from external power sources, magnetic fields, even dimmer-controlled track lights. Sometimes, simply reversing the orientation of the ac power plug can eliminate humming.

Reverse the cables Left to Right to see if it stays with the cable or the input channel. Follow it back to the source, isolating in the same manner. Eventually you will find the entrance point of the hum. Frequently a cable's ground will oxidize over time and simply removing and reattaching the cable with a twisting motion will re-establish the shield.

May 02, 2011 | Jamo A 305 Main / Stereo Speaker

1 Answer

Buzzing sound when sub is on even without turning my amp on, if you can call me on my phone 909 938 9219 it be better for me thanks, i am little slow with my computer, please help


Buzzing is usally AC line noise leaking into an un-shielded cable somewhere or a floating ground. If the AC plug is reversible, try that. Sometimes the buzz is from an attached device. Make sure all audio cables are plugged in tightly at each end and routed away from or at right angles to any power cords and away from other sources of strong magnetic fields like TV's.

Disconnect the input(s) and see if it hums in the absence of an audio source. A bad audio cable shield or unwisely-routed audio cables will allow entrance of unwanted signals from external power sources, magnetic fields, even dimmer-controlled track lights.
I've also seen variable track lights induce noise but it's usually minor.

Try rotating the power cord in the wall outlet.

If it still buzzes with no cables or anything external attached there's an internal problem.

Apr 30, 2011 | KEF Audio PSW 2150 Speaker

1 Answer

Have an older (6 + Yrs) VX-10A model, that's worked fine up until now. I recently moved, hooked up the same stereo and surround sound speakers, which worked fine, but the subwoofer made a loud hum as...


Disconnect the input and see if it hums in the absence of an audio source. A bad audio cable shield or unwisely-routed audio cables will allow entrance of unwanted signals from external power sources, magnetic fields, even dimmer-controlled track lights. Sometimes, simply reversing the orientation of the ac power plug can eliminate humming.

Mar 03, 2011 | Velodyne VX-10 Subwoofer

1 Answer

When my sub is off it hums how can i fix this


Teach it the words ;-)

"OFF"? Turned off, no power?

Register and download the manual for free at retrevo.com

http://www.retrevo.com/support/Polk-Audio-RM6750-Speaker-Systems-manual/id/2771dj580/t/2/

Disconnect the input(s) and see if it hums in the absence of an audio source. A bad audio cable shield or unwisely-routed audio cables will allow entrance of unwanted signals from external power sources, magnetic fields, even dimmer-controlled track lights. Sometimes, simply reversing the orientation of the ac power plug can eliminate humming.

Feb 27, 2011 | Polk Audio RM6750 System

1 Answer

When I plug it up it makes a loud buzzing humming sound that's unconteollable with the volume.


Buzzing is usally AC line noise leaking into an un-shielded cable somewhere or a floating ground. If the AC plug is reversable, try that. make sure all audio cables are pluh\gged in tightly at each end and routed away from or at right angles to any power cords and away from other sources of strong magnetic fields like TV's. I've also seen variable track lights induce noise but it's usually minor.

If it still does it with no cables attached it's an internal amp problem.

Dec 31, 2010 | JBL PB10 Subwoofer

1 Answer

Sometimes there is a very annoying buzzing noise coming from the speakers. Why is that? Can it have something to do with the earth? I have grounded the speakers to an iron stick outside the house.


LOL. This is a common, easily solveable problem. Remove your cellphone or anything that emits radiation of any sort from the general area. Don't believe me? send a text message while sitting net to your speakers. It does this even if you arent sending a message because your phone sends intermittent signals to the cell tower. the radiation being emitted from the phone does weird things with the magnets inside the speakers.

Dec 17, 2010 | M-Audio BX5a Speaker

1 Answer

Is it possible to hook the infinity bu-1 subwoofer to a home theater system where the subwoofer output is straight power say it"s like 25 watts coming out of that one channel and before the original...


In general higher speaker impedance is safer than lower impedance for the amp. Don't expect anything impressive re: audio output from a passive (unpowered) sub if your HTS says it pushes only 25 watts. Without frequency bandwidth and distortion noted the spec is virtually useless as a comparison.

The BU-1 is a powered sub that accepts either RCA Line Level or HIGH LEVEL amplifier power. If you use the latter, impedance is a non-issue because the input feeds the BU-1's internal amp, not the speaker directly. You should be okay.

Perhaps if we knew some specifics about the HTS we could do more than guess.

Jul 21, 2010 | Infinity BU-1 Speaker

1 Answer

Connecting an Altec Lansing ADA995 subwoofer system to a stereo


I have this exact Altec Lansing speaker system and I'm currently just using it with my Dell computer. But, I know you don't have to install these speakers to any high powered receiver for good sound quality. The subwoofer has two separate 200 watt RMS combined amplifiers built in for it's single knob controlled dual 6.5" bass drivers and 2-way magnetically shielded satellites, which are amplified together by any source that has an analog or digital volume control. The speakers act as a preamp receiver to any volume or frequency tone level controlled audio source. These input sources can also equalize the speakers receiving input signal for bass, treble or mid-range adjustments. You only need to obtain the proper adapter to hook up all the speakers to your desired component or device. Besides a computer, for example a TV with a variable audio out function or a mp3 player will work. The adapter that i am referring to is similar to what is included with certain 5.1 Logitech brand computer and multimedia speakers specifying gaming console and TV connecting. It has all three color coded 1/8" connector inputs on one end and RCA jack outputs on the other. This can be purchased more easily online then offline at stores such as Ebay for a fairly inexpensive price. However this adapter will not decode true 5.1 surround, but instead give a 5 channel stereo effect. I guess if one was looking for an inexpensive alternative solution to purchasing traditional high end home entertainment audio equipment, the ADA 995s are one of few computer speaker models in my book that can do a decent job.

Jun 19, 2009 | Altec Lansing ADA995 Speaker

1 Answer

Can a subwoofer affect a computer monitor?


Most computer speakers are (SHIELDED) and this protects electronics from the magnets in the speakers! So you should be safe if your surround sound system is made for a computer system! ( if not two feet is a safe distance)
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Jan 10, 2009 | Speakers & Subwoofers

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