Unnecessary radio amplifier

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27.04.2007 0:16:00
Good afternoon!

I am the owner Audigy 4 and Genius SW-HF5. 1 3000.
When running the amplifier from the speakers shed radio.
When disconnecting the amplifier from soundcard radio continues to pour. . .
When wrapping foil amplifier radio continues to pour. . .

in finding solutions to the problems found.

Tell me whether you can buy FM-card and let the radio amplifier in antiphase. . .
Or is there an easier way?

Thank you.
27.04.2007 11:12:00
Very funny. . . A garantiyku include not work? Speakers do not work as they should, and it's - the basis for a replacement or refund. If garantiyschiki will buhtet, call the radio signal noise (as undesirable) and refer to the discrepancy between the stated SNR.

If there is no guarantee, try 1. Disconnect the input wire, if it is turned off, and listen, will the radio. Maybe replacing wires - your gateway. 2. Jumper the entrance, in the best case (if the wire is disconnected) right at the entrance columns, in extreme cases (wire is not disconnected) directly to the connector (minijack, or whatever?). If the radio will remain pickup collects some of the internal circuitry amp or speakers, and replacement of the wire will not help you. Help repair or purchase of normal speakers.
27.04.2007 23:24:00
There is one nuance

Radio volume does not depend on what I put the volume on the amplifier.
Whether the situation that radio caught the wires coming from the amplifier to the speakers?
28.04.2007 12:07:00

whether you can buy FM-card and let the radio amplifier in antiphase. . .
slid under the chair. . .

quite obvious that the input of the amplifier catches the "hum". Screening should be not so much the amplifier itself as the cable from the PC to the amplifier.
28.04.2007 13:19:00
1. Radio caught in the AM, FM card so you will not help
2. If the volume of the radio does not depend on the position of the volume control column , this marriage columns.
3. If the regulator speaker on the radio yet affected, then try pootklyuchat wires - first from zvukovuhi, then from the speakers.

likely in the input cable is not connected properly.
28.04.2007 20:06:00
Yup. Was fuzzy. MEND.

have a sound card. Audigy 4. Works perfectly. Including through headphones.
There are 5 columns (without anything inside ) - only speakers.
There is a certain device that combines a power supply, amplifier, control unit (On / Off, Mute, input selection and volume) and a subwoofer. We call it the "Device". Power cord without grounding.

device has two types of inputs - AUX (two tulip) 1 and 5. (6 tulips). Connected 5. 1 (3 pairs of tulips). At the outputs of pairs of column conductors (great lengths). Let's call them "the output wires."

problem:
Columns hear the radio. Not loud, but legible.
Radio volume is always constant and does not depend on the selected volume (both on the device and on the sound card) or mode Mute.

lack of radio is observed only in one case - the unit is turned off (t. E. ONLY Off).
Switching the input, disconnect the input wires in any way on the radio is not affected.

If I squeeze beam output wires, the radio volume is reduced.

It seems obvious that a radio signal is applied AFTER the input gain.

Accordingly, there are three possible places:
1. Inside the device (but after the amplifier) ​​
2. Output wire
3. Columns

column is empty, the wire - this wire. Like it?

In principle, you can try instead of output wires attach headphones and listen to the radio presence. But it does not hurt if the device?
28.04.2007 20:59:00
No
not hurt headphone impedance higher than that of the speaker, just put the minimum volume, but the speakers hardly Choate something zooms, you can try to put the power cord ferrite filter, it should be cut high frequency if it falls into the unit so try a different outlet, ask to change the radio station frequency and t. d.
29.04.2007 0:33:00
In headphones noise: it looks like on the radio, but it is unclear.

Where to read about ferrite and its principle of operation?
29.04.2007 0:41:00
another had a "glitch", the current column mikrolab (lives near the TV tower), the problem was solved complete change of wires for screening "own" production
29.04.2007 1:26:00
What specific "concerns complete wiring" - input or output?
What was the screening?

PS general without wires (power only) Headphone gives this hindrance.
29.04.2007 9:42:00


So it is necessary to shield the inside "device". Tape the foil and connect it with the "earth" wire.
29.04.2007 20:04:00
I do not understand why when I pick up a bundle of wires output volume of the radio is significantly reduced.
30.04.2007 8:51:00
picking up the wires, you bring your container in an oscillating circuit, which was created in the device due to impaired assembly technology (possibly).

more ways to reduce fluctuations in the circuit:
1) different orientation of the device in space.
30.04.2007 9:15:00

Tell me whether you can buy FM-card and let the radio amplifier in antiphase. . .

theory - why not, but sbosob address the highly original
02.05.2007 14:39:00
+ For a sense of humor
02.05.2007 17:27:00

It seems obvious that a radio signal is applied AFTER the input gain.
Five points!


I do not understand why when I pick up a bundle of wires output volume of the radio is significantly reduced.
unlikely that the output stage is included in a bridge circuit. So one of the two wires is none other than as land amplifier. If
layout make the curves, it can also be a signal and power. . .

Try, for a change, to completely disable all inputs. Radio is?
19.07.2007 1:25:00
UPDATE:

coiled wires from the computer to the "device" foil - noise reduced.
wrapped "device" foil - even declined.
Put the entire structure in place - the radio worked very loudly.
interconnected these two "screen" - the radio was gone immediately.

have to believe in miracles and the Deus ex socket.

However, immediately jumped another problem - when softly playing music clearly audible low-frequency noise. I suspect that it is 50 Hz.
How is it treated? Connecting "screen" to zero effect is not produced.
19.07.2007 9:07:00
Homemade amplifier?
19.07.2007 23:25:00
Did I do the amplifier Genius SW-HF5. 1 3000?
Or it was a rhetorical question?
20.07.2007 9:41:00

There is a certain device that combines a power supply, amplifier, control unit (On / Off, Mute, input selection and volume) and a subwoofer. We call it the "Device". Power cord without grounding.

under this article may fall and homemade.

A amplifier is likely very defective. You are strong in electronics? Help, we can, but then you have to pick up a soldering iron and multimeter. . .
21.07.2007 14:03:00
Met such effects in a few people because of the translational radio (signal amplitude is large, probably somewhere near the substation reinforcement).
Consequently, partially save a competent screening or, better yet, the identification of the source of interference and its deactivation (The easiest - disconnect the wires on the radio panel).
22.07.2007 13:07:00
Yes
by radio that he got rid of. Now he pyatidesyatigertsevy background
22.07.2007 21:50:00
Inside the solder anything for a year do not want to.
Can you outside to do anything (including solder)?

quote:
:
Consequently, partially save a competent screening or, better yet, the identification of the source of interference and its deactivation (The easiest - disconnect the wires on the radio panel).

You can read more about the "competent screening" and "turn off the radio wires on the shield"? Links are welcome.
25.07.2007 18:57:00
if "fonit" - many discrete components, wires and soldering illiterate. Gather on the TDA7294 / 93 background will not.
If you do not know about radio traslyatsionuyu better not to climb. . . But it as a source of additional electromagnetic waves in an apartment is better to turn off immediately, the two wires, a specialist with a telephone communication unit does. About
screening talk long, there may even body peremennikov fonit if wrong "mass" is connected.
09.09.2007 1:55:00
This - radiorazvodka?

If so, how to determine that it is necessary to disconnect?
09.09.2007 3:47:00
Grey-cutters hryas!
Just do not mix with the neighbor.
09.09.2007 11:02:00
People, I am sorry, that is not on, but how much will it cost fm card? ? ?
09.09.2007 12:05:00

how much it will cost fm card? ? ?
simplified version of the TV tuner (ie. E. Only FM) a couple of years ago was worth about $ 20. Does it now - do not know.
And: TV + FM tuner can already be found for $ 50.
09.09.2007 12:53:00
Nifigase prices you, in the Cradle of Astronautics!
And in St. Petersburg 2 times cheaper.
09.09.2007 14:48:00

And in St. Petersburg 2 times cheaper.
What is it?
For example, fm-card for $ 18: http: // oldi. ru / catalog / show. php? idx = 1308 & amp; cod = 246 ... D58% 26sort_by% 3D1
There are cheaper options?
10.09.2007 0:13:00
quote:
:
clippers Grey-hryas!
Just do not mix with the neighbor.

disable both. . . Completely not help but relax.
What else can I do?
12.02.2008 23:18:00
Where in Moscow it is possible for money to repair this unit (Genius SW-HF 5. 1 3000)?
27.12.2008 22:55:00

you solved the problem?
I have the same with the dialog w-3000
ferrite rings did not help. I doubt that replacing shielded wires to help (search showed that usually is not the point, and interferences on the inside)
suddenly there you have cleared up something. . .
30.12.2008 19:44:00
Likely to have a poor self-excitation amp HF, which is modulated by the same RF interference, priststvuyuschey everywhere. Usually it is treated small (no more than 47 pF) capacitor from the output of the amp to its inverting input of the same. It is understood ESA but that the power amp shunt good ceramic S.
not help - to bring to the master.
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