Home stereo from 1990 's brand TECHNICS mix models this is what I see on it stereo integrated amplifier SU-G91 DOLBY SURROUND PRO-LOGIC in one of the corners says NEW CLASS A and the problem that I have is that it was on playing 5 cds one song at the time from each disc and the over load light when on and since then I haven't been able to use it anymore thankyou for your help.

Yes, it is hooked up using the (cassette) tape inputs and outputs. Use the tape monitor switch on the receiver to switch the EQ in or out.

did you hook up both rear speakers?in the right spots?,if not they wont work,do you have the speaker buttons pushed in?? TECHNICS SU G91 INTERGRATED AMPLIFIER 130W CHANNEL

TECHNICS SU G91 STEREO AMPLIFIER

I assume you want to use the SU-G91 as a power amplifier to drive your speakers. If your receiver has connections for inserting an equalizer (may be labeled pre-amp output and power amp input), remove the jumpers between the pre-amp and the power amp, then run cables from the pre-amp to the SU-G91 inputs. You can have an equalizer between the receiver and the integrated amplifier.
If this is not available, use the recording output (for a tape recorder on older receivers). Note that the volume control on the receiver will be bypassed with this connection.

Hello
If subwoofer is inactive now, the sound preference settings you set now is wrong.

Before using the remote control for the following
operation
* Set the remote control mode selector to AUDIO

** There are exceptions in the operation mentioned
above. In such a case, follow each instruction

Dolby Pro Logic II*1

# Dolby Pro Logic II has a newly developed multichannel playback

format to decode all 2 channel sources - stereo source and Dolby

Surround encoded source - into a 5.1 channel.

Dolby Pro Logic II has two modes - Movie mode and Music
mode

# Pro Logic II Movie (MOVIE)
Suitable for reproduction of Dolby Surround encoded sources

# Pro Logic II Music (MUSIC)
Suitable for reproduction of any 2 channel stereo music sources

# Dolby Digital*1

Used to reproduce multichannel soundtracks of the software
encoded with Dolby Digital

# DTS Digital Surround*2

Used to reproduce multichannel soundtracks of the software

encoded with DTS Digital Surround. DTS Digital Surround (DTS) is another discrete multichannel
digital audio format available on CD and DVD software

If you are playing a source that is Stereo such as FM Radio or a CD the sound will not use all 5.1 speakers unless you enable the correct Surround Mode. On the remote there is a button on the lower right of the remote that says SURROUND. You can toggle through the various surround modes with this button the mode you want is Dolby Pro Logic The Pro Logic mode uses the built-in circuit to steer the Left, Center, Right and Mono Surround channel audio signals and uses all five speakers to play both stereo and Dolby Pro Logic program source, such as TV and VCR. You can use this mode with any stereo program source (such as VCR/TV) to enjoy multi-channel sound experience.

The only way to get Dolby 5.1 audio out of the Xbox will be via fiber optic cable from the Xbox to a Dolby Digital amplifier - which will output a decoded 5.1 signal to a 6 channel amplifier and 5 speakers and one sub-woofer. I doubt the Logitech speaker system has a Dolby 5.1 decoder built in with the amplifier for under $100, but I can't say for sure. If the Logitech has a an optical (or TOSLink) input, connect it to the Xbox and follow the instructions below.

To configure your audio settings, follow these steps:

1. Start the Xbox 360 console without a disc in the disc tray.
2. In the System section of the Xbox Dashboard, select Console Settings.
3. In the Console Settings area, select Audio.
4. In the Audio Settings area, configure settings for analog output or digital output:
   • Analog output settings:
     • Dolby Pro Logic II: Select this setting for stereo systems or Dolby Pro Logic II-compatible systems.
     • Mono: Select this setting for systems that do not support stereo output. Note If you have connected to Xbox LIVE and downloaded any AutoUpdates, the Mono option will not be available.
   • Digital output settings:
     • Digital Stereo: Select this setting to use digital stereo output.
     • Dolby Digital 5.1: Select this setting to use Dolby Digital output.
     • Enable WMA Pro: Select this setting to enable WMA Pro pass-through if your receiver supports the WMA Pro format.

Note You must use one of the following cables to support digital output:

• Xbox 360 Component HD AV Cable
• VGA HD AV cable
• S-video AV cable
• Advanced SCART AV cable
• Japanese HDAV D-connector AV cable

Additional info:

http://www.dummies.com/how-to/content/hooking-up-xbox-360-sound.html

Hey, The model of the amplifier is SU-G91 Technics.....If you could help......Thank you.

THe amp has detected a problem and shutdown to prevent further damage. This unit has 2 amp pacs inside and one or both have failed. If you can solder, you can fix this yourself. The main amp pac is an SVI3206 and can be purchased online for about $60.

Keep me posted.
Dan

are you trying to use the surround sound for movies or music ? , ive got the dvd version of this system (sc-dv290) and ive noticed the surround sound tends not to perform well with music , but sounds great with movies. i think its because the movies have dolby digital and music does not. The dolby pro logic in my opinion doesnt really make that much of a difference in sound unless the sound is cranked up past 44db on the amplifier. the only cables you need are the ones that are attached to the surround sound speakers and they cannot be removed so it cant be the wiring . I reckon you have a 1 - faulty system 2 - listening to music 3 - maybe not pressing the pro logic button on the sound processor. Hope this helps