rear speaker hiss

[mpk200]

i have a yamaha rxv420rds 2 months old and i am getting speaker hiss from my rear speakers.
i've swapped front celestion f2 to rear etc and the hiss is still there.
i here it more in dolby or dts

any ideas!!

thanks
mike

ps i have also changed speaker cable as well still same problem!

dvd marantz3100

[kcxdev]

can't really help but the hiss is likely due to the amp not the speakers, have you got the rear volume turned up?

[Neon]

Just to humour me (and eliminate the obvious):

1. Are all the speakers correctly level balanced for your listening position using the dolby test tone?

2. Is the treble control "flat" (i.e. not turned up)?

3. Is it all movies, or just those trendy older ones which weren't digitally recorded?

[Bapapapa]

Do you have a snake living behind your sofa?

[kcxdev]

http://www.69megs.com/pages/smileys/animal/snake.gif

[mpk200]

NEON thanks for your comments!

as far as iknow all speakers are balanced.As a newbie im not sure what all should be set to

What is intresting treble is about half way round do i need to alter this?

I find the speaker hiss is with most movies even with the video essentials dvd it is very noticeable


thanks for your help

mike

[Neon]

The Dolby test tone is used to ensure that all speakers sound as loud as each other. Start the test - the sound (errm, a hiss, as it happens!) moves round LF-C-RF-RB-LB in sequence. Let it go round a couple of times to listen to the sound (it sits on each speaker for a couple of seconds before moving on). Then, use the volume control on your remote to adjust any speaker as it needs it. The tone will stay on that speaker while you tweak it.

The treble control should be midway.

I've got the RXV-620RDS and don't have any hiss, except from oldish (pre-1990) movies, where it's possible to hear the original tape hiss - but only during quiet passages and if you're trying to listen for it.

Are you sitting "too close" to your rear speakers?

Do you listen at unusually high volumes?

Is it both rears?

Electronic hiss is only normally a problem in low-level analogue circuits. Apart from the turntable phono input, there aren't any such circuits on your receiver - certainly none on the DD/DTS side.

The feeling in my water is that's the deficiencies of the source material which you're hearing.

[mpk200]

neon

thanks again for your response.

the hiss does come from both rear speakers.It seems to be coming from the tweeter on both speakers.I've tried turn the rear volume on the speakers to the minium but still can be heard.

Are your rear speakers totally quiet when not used in surround?
as mine are not,when the centre speaker is just being used such aS dialouge from the essentials disc the hiss is very noticeable.

i do have my system louder than average but not excessive.

[millec199]

It may be some interference from the speaker cable you are using. If it is very cheep and the runs are long and they pass a lot of electrical apps and sockets that may cause a hiss in the rears. If so try better quality speaker cable or a different route for the cable.

To test if this is the problem try using a short run from the rear outputs of the amp to the speaker and see if the hiss is still there. If so it is the amp or speaker (most likely the amp) and not cable but if not you have found your problem.

Hope it helps

[Neon]

Mine are completely silent. Except when they're not, obviously!

You will hear hiss predominantly from the tweeters.

I'm at a loss to suggest anything else at the moment. Can you get a replacement receiver? You may just have a lemon.

[mpk200]

Neon

Just spoke to richer sounds and they have agreed to change the amp.

QUALITY SERVICE!

What do you think of a upgrade to the 520rds its an extra £100

Thanks again for your help

Mike

[mpk200]

NeoN

forget the last posting richer sounds made a mistake with cost of the 520rds

THEY QUOTED THE TSP PRICE NOT THE PRICE THEY SELL AT ON THE WEB!

i now have the 620rds on order for wednesday for a extra £75

Thanks


Mike

[Neon]

Cool! The rocky upgrading path to ruin!

Best of luck.