sonerin did u ever tighten the bolt behind monitor audio speaker? instruction say do it after some while

I am not sure, I don't have monitor audio speaker

The bolts securing the drivers to the speaker cabinet need to be tightened regularly. Actually not really that regular, once every one or two years will do. Reputable speakers should come with their own tools for doing that. I believe Monitor Audio provides Allen keys for such purpose.

I will say not to do anything unless you hear the sound has change

The drivers are subject to vibration, a lot of it, and the bolts become loose. You will be surprised how loose some the bolts have become over time.

Yes if is loosen than of course is good to tighten it. as long as there is no change of sound i will think is ok

Ahh..I see.

Unfortunately my receiver can't check input status.

As far as I know, the optical to RCA convertewr doesn't support dolby or dts, only PCM.

thanks for the info from u 2 sifus.
seller has provide allen key in sealed plastic, so i think its about time to adjust once.
instruction say screw in until bolt touch casing, then a 90' tighten will do. kautim

This post has been edited by ktek: Jul 10 2016, 11:13 AM

sonerin
Been quoted rm40+ per meter for Supra Classic 2x4.0, worth to take and got big different? Currently using Boss system AWG 12 OFC cable..

I have not heard the sound from supra cable but I will think is quite a decent cable. However, Bose system is really nothing to improve even with change of cable. I will say is just nice looking system.

Oh, I plan to replace my DZ7 and vokal speaker wire with Supra wire

I see. I am sure is better than stock cable but really can't tell if it will change much

Just curious if same type of wire but different diameter, got different? e.g. 2x2.5 vs 2x4.0

I checked mine last year after about 1.5 years. It was only slightly loose so I tightened it until its not loose.

Be very careful. Just make sure NOT to over tighten the rear bolts as it may damage the threads that hold the bolts. Not necessarily a 90 degree turn.

A few years ago, I had a friend who over turned the bolts till it becomes "forever loose" and he had to send the bookshelf speakers back to the distributor, Ban Leong, for parts replacement. Eng Siang International Ltd in Singapore is the new distributor.

Theoritically bigger should be better but is just a thought. You must try out to know

Didn't know MA had only so few screws to hold the drivers

Since your optical to rca converter only support 2 channel output, the audio has obviously been changed by your AV Receiver. You don't have sub-woofer for LFE channel.

You also said that your AV receiver don't display input status so its not easy to find out why your receiver sometimes output 2 channel and sometimes 5 channels. Look at your receiver remote to see if there is/are any buttons that changes the 2 channels audio to emulate 5 channels. Usually most Denon, Marantz and Onkyo AV receivers have 4 buttons which are coloured in "Green, Red, Blue and Yellow" which can change the "Sound Mode" from original 2 channels to emulated (not true) 5.1 surround.



In my case, when I play a video with only 2 channel audio, I can press the remote "Green" Movie button to change from Stereo to Dolby Surround (5.1).

Since your AV receiver is a different brand, I don't know whether your receiver supports such features or not. If it does support such feature, your receiver may do it in a different way and probably you may have pressed one of your remote button which caused the 5 channels emulation.

If there is a Manual, you can check it to find out. You can also post a picture of your remote here to show the buttons that it have so that I can at least "guess" the reason.

Yaloh. Each bolt is for holding one driver to the rear of the cabinet. MA bookshelfs with 2 drivers only have 2 rear bolts. My MA Gold GX200 have 4 drivers so it has 4 rear bolts.

No wonder it get loosen because only 1 bolt

A picture speaks a thousand words.