Theater 500 Surround "5.1-Set"

Usually, all 6.1/7.1 AV Receivers can generate a 6.1/7.1 playback from a 5.1 recording. The procedure is comparable with the Dolby Pro Logic Decoder, which generates a matrix circuit from the stereo signal of a centre channel.

The AV Receivers thus generate a rear centre channel from the rear R/L channels of a 5.1 recording through the matrix circuit. The stronger the rear R/L effects on the DVD, the stronger the signal from the rear centre.

No.

The LT 4 is a partially active system that requires AV receiver operation. It has a built-in amplifier that only supplies bass tones in the subwoofer housing That is why an "AV Receiver", i.e. a combination of radio receiver and multichannel amplifier, is essential for using the LT 4.

The subwoofer is connected from the Line In R input to the AV receiver's sub out jack using a mono RCA cable, while the three front satellites are connected to the three speaker outputs of the AV Receiver using the speaker cable and are supplied with power from there.

Connect signal-emitting source appliances such as DVD player or PC etc. directly to the corresponding input jacks on the AV Receiver.

Naturally 5.1 channel systems that play back all of the sound tracks contained on the DVDs already offer an excellent home cinema experience.

For the new 6.1 or 7.1 sound formats, a rear centre channel is controlled in addition to these channels. This channel, coded in the stereo effect channels, enables the better positioning of effects and music signals directly behind where you are sitting.

If using two speakers for the rear centre channel, the optimal seating position is not tailored to an individually specified position, i.e. you don't have to be seated in the exact centre.

In the following cases we would recommend upgrading to a 6.1 or 7.1 system:

• Your sitting position is not always dead centre, or you often have several viewers

• You have had a 5.1 system for a very long time and would like an improvement

• Your AV amplifier/receiver is designed as a 6.1 or 7.1 receiver and offers the corresponding connection possibilities

• You can also set up one and/or two rear centres. If you are currently building/renovating your house or flat, we would recommend you lay the cables for the additional rear centre channels in any case.

• Modern BluRay players usually issue a true 7.1 surround sound signal at all digital outputs and are thus optimally suitable - presuming the relevant AV Receiver - as a signal transmitter for a 7.1 channel home cinema system.

The choice of speaker(s) depends on the AV Receiver/amplifier. This has an additional power amplifier for one rear centre (6.1) or its two (7.1). You can easily see this by the wattage (e.g. 6 x 100 watt or 7 x 100 watt). To the existing (side) rear speakers for right/left (5.1 technology), one or two additional rear centres are utilised in addition (6.1 or 7.1 technology).

• My AV amplifier/receiver has six connections/power amplifiers (6.1):

In this case we recommend connecting the same centre at the rear that you also used in the front area.

• My AV amplifier/receiver has 7 connections/power amplifiers (7.1):

If you already use dipoles or direct emitters for your 5.1 system, then you have a choice of either supplementing two more dipoles or two direct emitters. For wall assembly and a short distance from the seating location to the rear wall (less than 1.00 metres), we would recommend dipoles. As soon as you want to set up the speakers on bases or on a shelf, then direct emitters would be the better choice.

Information:
Even if the AV Receiver/amplifier only has the connection and power amplifier performance for one rear centre, it is still possible to connect two instead of just one speaker through series connection.

Exception:
• The AV amplifier/receiver has seven connections/power amplifiers, but I can only set up one rear centre. As the 7.1 AV amplifiers/receiver also offer the option of operating just one of the two outputs (usually can be set in the speaker set-up!), you can also only connect just one rear centre.

Here we recommend connecting the same centre to the rear that you also used in the front area. For short distances to the listening location (less than 1.00 metres), a dipole would be the better choice - especially if you are also using dipoles at the sides.

Since the distance and volume of every individual speaker can be adjusted for the digital home cinema receivers, asymmetrical set-ups can be easily compensated. 

Take the level meter with you to the listening position and point the measuring device directly towards the front centre speaker. Now start the sound generator of the receiver (or of the sound card or DVD player) and equalise all speakers in succession to the same level.

The position and alignment of the measuring device should not be changed during this procedure. For a Teufel sound level meter, proceed as detailed in the following:

1. Remove the protective tab from the battery.

2. Set the weighting to "A" - only the "A" position considers the full frequency range during measuring!

3. Set the response to Slow.

4. Set the Range to 70.

5. Start the test noise from your AV device.

6. Change the volume for every individual channel at the AV device so that the level meter shows 75 dB (meaning between +4 and +6).

7. Done!

Compared with the 5.1 set, the 7.1 set has two extra speakers for the back rear centre channel.

The 5.1 channel set plays back all sound tracks on DVDs/Blu-rays and creates an excellent home cinema experience.

With the 7.1 sound format, a rear centre channel is also generated in addition to these channels and distributed to two further speakers (the "rear centre"). This channel, which is encoded in the stereo effects channels, allows better location of effects and music signals directly behind the sitting position.

If you use two speakers for the rear centre channel (i.e. installed 7.1 set), the optimum sitting position is not restricted to one specific place, so you don't have to be sitting exactly in the middle and several listeners can enjoy the best sound.

Because the centre plays back spoken dialogue, this speaker must be positioned as centrally as possible under or over the TV/monitor or the screen.

If the centre is placed outside the area of 40 centimetres to 1.20 meter height, it should be slightly inclined or angled towards the listener.

This hum can be caused by the connected devices or disruptions in your electricity current. Please do a test to see which it is.

1. Remove the RCA cable from the input on the subwoofer. If the hum is no longer heard, go to point B. Otherwise, follow point A.

A. Attach the net cable of the subwoofer to another electricity outlet (i.e. Kitchen/Bathroom/Bedroom). If the subwoofer still hums, get in contact with our Support team.

Should the hum no longer be there, the disruption was a problem in your power supply, which can, for instance, be caused by dimmers or chargers. To find out where the disruption is, unplug all your devices and work back from there. As soon as the hum is heard, you now know your source of the disruption.

B. In your case, the "ground hum" is responsible for the disruption. Please proceed as follows to discover your source.

• Disconnect the cable or satellite port from the TV Receiver and check if the hum disappears or not. If it does, you can use a sheath current filter for the cable outlet to prevent this. For example, the sheath current filter AC 9022 ED. If you have a satellite connection, connect the Satellite Receiver to the optical cable playback source - Teufel Optical Digital Cable


• If this reason can be excluded, separate all devices from the AV Receiver one at a time until the hum stops. The last connected device is then your hum source and should be separated from the others using a galvanic separation filter (found in a retail shop)


• If this doesn't work, get in contact with us once again so that we can give an individual, helpful response.

Thanks to the speaker set-up/bass management integrated in the home cinema receivers/amplifiers, the subwoofer functions in stereo, Dolby Surround and digital mode.

The corresponding setting in the speaker set-up must be adjusted individually for each source for many receivers, however, e.g. for CD playback only front without woofer, and front speakers plus woofer for Dolby Surround video playback.

Some AV Receivers/amplifiers issue the bass signals via the subwoofer pre-amplifier output so quietly that the subwoofer does not start automatically.

To make sure the subwoofer switches on and off correctly in automatic mode, (to be selected on the corresponding switch of the subwoofer, such as "Auto / On / Off"), we recommend turning the level control on the subwoofer to 1/3 or perhaps to 1/2 and increasing the output level for the sub in the receiver's speaker set-up – sometimes up to the maximum (+10 dB or +12 dB). The subwoofer should then work perfectly.

The maximum position of the output level in the speaker set-up of the AV Receiver is obligatory for some of our models (e.g. the Concept S subwoofer).

1. You take the load off of your amplifier/receiver and thus receive more dynamics.

2. The active subwoofer makes it possible to set the volume separately from the remaining speakers.

3. Only an active subwoofer can be connected directly to the subwoofer connection of a home cinema receiver.

Although designed to be fully active, the Teufel set is also partially active in conjunction with an AV Receiver.

You can connect it like a standard speaker system: the five satellites via speaker cable to the corresponding speaker outputs front R/L, rear R/L and centre of the AV Receiver/amplifier and the subwoofer from the front R input via a mono-RCA cable to the Sub Out output on the A/V Receiver/amplifier.

Please note:
The auto on/standby switch only responds when the front R input is being used! The subwoofer also receives the full subwoofer signal via this channel.

If the AV Receiver/amplifier has preamplifier outputs for all channels (front R/L, rear R/L, centre and subwoofer), the Teufel set can also be connected via three RCA cable pairs to the subwoofer and the satellites via speaker cables to the subwoofer. However, we recommend using the first version.

The hum (50 Hz) comes from the 220 volt supply network and is caused by current power flows through the protective conductor. These so-called "ground hums" is caused when you connect two devices that are already grounded on the protective conductor (subwoofer) or the antennae cable (AV Receiver) to the subwoofer cable.

Solution:
Separate the direct connection by a grounding filter for the antennae cable that is created for it - for instance, the Teufel modell sheath current filter AC 9022 ED. Alternatively, you can use a galvanic separation filter that is looped into the connection between the subwoofer and AV Receiver.

The hum disappears if the antennae cable is separated from the Receiver/Tuner/TV. First try the grounding filter, otherwise the galvanic separation filter.

The location of a subwoofer with a recommended cut-off frequency of under/equal to 120 Hz can be freely selected and does not affect the other speakers.

Placement within the straight line between both front satellites is ideal - but not precisely in the corner of the room because certain frequency components could be unpleasantly excessive when played back.

By setting the phase, you can affect the point at which the membrane of the subwoofer bass speaker moves to the front. This setting makes it possible to optimally adjust the subwoofer to the satellites.

The membranes of the satellites should move to the front at the same time as the membrane of the subwoofer bass speaker, because all speakers of the system must vibrate in phase for optimal playback. This means that (provided the connection has the correct polarity) all drivers must move in one direction when the three front speakers receive a pulse (towards the outside or towards the inside).

If the subwoofer is in line with the front speakers, its bass speaker should have the same direction of movement (phase) - the controller on the woofer is set to "0". If the subwoofer is not between the front speakers, but is to the side of or even behind the listening location, its phase length will not match that of the front speakers. That is why the phase of the subwoofer must be changed in such cases.

So much for the theory. In practice, this means: Listen to a loud piece of music with heavy basses and ask a second person to change the phase during playback. The correct setting of the phase switch depends on where the subwoofer is positioned in the room. The position where the bass playback (above all the upper bass range) sounds the fullest is the correct position. Have fun trying it out!

Unscrew the tamping screw from the Rampa insert and screw the Rampa insert back into the bottom of the speaker.

It is possible, but we don't sell any bases that meet the minimum recommended height of 1.50 metres. Stability at this height can only be guaranteed if the base plate is very big. A base of around 1 x 1 metre isn't going to look very attractive.

Perhaps your joiner will be able to make you something that will match your room. You should also make sure that the dipoles are positioned very close to the wall, including when they are on bases.

In theory, dipoles can be placed on bases providing they are always near a wall, but we cannot supply any bases that are of the recommended height of 1.50 metres. Stability at this height can only be guaranteed if the base plate is very big.

A base of around 1 x 1 metre isn't going to look very attractive. Perhaps your joiner will be able to make you something that will match your room. Otherwise you should also use direct speakers for the surround channels, preferably of the same model as the front speakers.

Yes. Alternatively, you can also use wall brackets to position the dipoles behind your seating location at a height of 1.40 to 2.10 metres. Almost all Teufel dipoles have an integrated M6 tamping screw in the bottom to accept wall brackets.

We recommend mounting the dipoles using the suitable, optionally available swivelling L wall bracket and then aligning the dipoles at a 45 degree angle slant to the inner lying speaker-equipped side to the back wall and aligning the other speaker-equipped side to the side wall. This causes the dipoles at the back and side walls to reflect, thus generating the desired diffusivity.
The distance of the dipole-side equipped speaker to the room side wall should be at least 10 centimetres.

A set-up close to the wall is possible in principle, but we cannot offer bases with the recommended height of at least 1.40 metres. Stability at this height can only be guaranteed if the base plate is very large.

However, a base of roughly 1 x 1 metres is certainly not a pleasant sight. Perhaps your joiner will be able to make something that matches your room.

Otherwise, you should use direct emitters for the surround channels as well - the same models as for the front speakers is best.

The reason for the error message is that the calibration functions were primarily designed for direct-emitting speakers.

However, as soon as dipole speakers are utilised, error messages can occur due to the spatial playback, because the dipole concurrently emits both phasings - the correct one and "the wrong one".

The reason why one speaker is displayed as "correct" and the other one as "incorrect" polarity is because sound is reflected variably due to the spatial conditions and consequently arrives variably at the measurement microphone. Depending which proportion of the sound is recognised by the microphone first, the receiver then decides whether there is (an assumed) false polarity or not.

Because polarity is visible based on the pole clamp markings on the speakers, you may ignore the measurement of the receiver.

The reason for the error message is that the calibration functions were primarily designed for direct-emitting speakers.

However, as soon as dipole speakers are utilised, error messages can occur due to the spatial playback, because the dipole concurrently emits both phasings - the correct one and "the wrong one".

The reason why one speaker is displayed as "correct" and the other one as "incorrect" polarity is because sound is reflected variably due to the spatial conditions and consequently arrives variably at the measurement microphone. Depending which proportion of the sound is recognised by the microphone first, the receiver then decides whether there is (an assumed) false polarity or not.
Because polarity is visible based on the pole clamp markings
on the speakers, you may ignore the measurement of the receiver.

Dipoles not only emit sound straight forward but also phase shift to the front and back.

This means that if you are sitting on an axis between the dipoles, the direct sound from the front and back sides of the dipole cancels itself out and you mainly hear room reflections. This simulates the sound field of a cinema where the surround channels of several speakers are reproduced.

The advantage of dipoles is that the surround field becomes wider and fills the entire rear area, whereas with direct speakers (normal speakers) you always hear the speaker directly. As a result, the sound experience with dipole speakers is always more intensive and emotionally stimulating.

Dipoles do not simply emit sound directly forwards, but emit towards the front and back in shifted phases.

This means that if you were sitting on an axis between the dipoles, the direct sound of the front and rear side of the dipoles is cancelled and you primarily hear the room reflections. This simulates the sound field of a cinema where the surround channels are played back by several speakers in each case. That is why the dipoles are mandatory for THX Ultra2 systems.

The dipoles should be hung on the slanted wall/ceiling to the side of your listening location.

All Teufel speakers have an M6 tamping screw at the bottom of the housing to fasten the dipoles to a sturdy L-Lock bracket, available in the Teufel accessories programme.

Only dipoles can transfer the atmosphere of the cinema sound par for par to a living room. The surround field for dipoles is broader and thus fills the entire rear area, whereas for direct emitters (normal speakers) you always hear the speakers directly. As direct emitters sound similar to the front systems, the atmosphere that creates three-dimensionality is missing as compared with the dipoles.

The disadvantages of dipoles is the necessity of positioning them on the wall (upwards of 1.40 metres) and the more expensive price: They usually cost more than normal direct emitters, as you require the double number of chassis to be used. For limits in price, the following general rule applies: better have good sounding direct emitters than bad dipoles.

The dipoles should be best mounted to the side of the listening location at a height of 1.40 to 2.10 metres. Many Teufel dipoles already have an integrated wall bracket. We offer the corresponding brackets for the other models, e.g. the L-Lock bracket.

The dipoles then emit towards the front (direction of TV/screen) and the back (direction of back wall) so that direct sound is not heard at the listening location. The distance of a dipole-side equipped speaker to the back wall should be at least 10 centimetres. If your living room does not permit the assembly in the described form, we will be happy to advise you.