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User's Manual

11

PREAMPLIFIER

MAIN

OUTPUTS

R

SUB/LFE OUT

R

L

L

AMPLIFIER

INPUTS

TO FRONT SPEAKERS

System Configurations

The following pages show some typical

connections that you might make in your
installation. They show how the inputs
and outputs of the Sunfire Subwoofer are
connected to your preamplifier or
receiver.

If your preamplifier has a

subwoofer output (often
labeled LFE for Low
Frequency Effects), it can
be connected to the
subwoofer’s Left (Mono)
input as shown. This is the
simplest and recom-
mended connection. A
receiver with a sub/LFE
output can be connected in
the same way.

The subwoofer will play

the low frequency range
and the other speakers will
play the frequency range
delivered to them by your
amplifier.

If you have a home

theater preamplifier, it may
have an independent
subwoofer volume and
crossover control. Make
sure this is correctly
adjusted, and that the
Sunfire Subwoofer’s
crossover frequency is set
to 100 Hz. This is by no
means an iron-clad rule,
rather it is a good starting
point. (See the crossover
frequency control details
on page 6 and adjustments on page 15).

You can set the subwoofer’s Bass

Level control to 0dB, and then use the
preamplifier’s subwoofer level control for
normal and routine adjustments.

Connections to a preamplifier’s subwoofer output

Summary of Contents for True Subwoofer Architectural

Page 1: ......

Page 2: ...onnected to a power supply only of the type described in these operation instructions or as marked on the Component 9 Power Cord Protection Power supply cords should be routed so that they are not lik...

Page 3: ...igurations 11 Adjusting the controls 15 Specifications 16 Troubleshooting guide 17 Limited warranty 19 Service assistance 19 Contents To find out more about this and other Sunfire products please visi...

Page 4: ...ly variable volume level control Soft clipping circuit allows graceful overload and prevents speaker damage due to clipping Gold plated inputs and outputs Dear Friend Thank you for purchasing my Sunfi...

Page 5: ...he driver however the enormous back electromo tive force generated as a consequence of its large motion and giant magnet causes the current flow to be much less than if it were a 3 3 ohm resistor It i...

Page 6: ...uce frequencies up to 100 Hz With the control fully counter clockwise the subwoofer reproduces up to 35 Hz Rotate the control until the bass sounds natural If the mid bass sounds natural but you want...

Page 7: ...o the subwoofer at the same time 8 High Pass Outputs Line level high pass output signals are available at these jacks These are active whenever a signal is present at the inputs of the subwoofer The h...

Page 8: ...mplifier heat sink and also as a conduit to remove internal heat to the outside and into the atmosphere It can reach temperatures of 60 degrees C which will feel hot to the touch using nerves of flesh...

Page 9: ...uld be fully shielded and as short as possible for the job The longest cable in your system will likely be to the subwoofer so choose a good quality brand Some patch cords can be a very tight fit and...

Page 10: ...r VCR or magnetic tapes and discs This will reduce the chance of the magnetic fields upsetting the TV screen or erasing your magnetic media Also position the control panel so that it is not touching a...

Page 11: ...LFE output can be connected in the same way The subwoofer will play the low frequency range and the other speakers will play the frequency range delivered to them by your amplifier If you have a home...

Page 12: ...n differential L R bass The opening scene in Top Gun for example has loads of L R bass information If this is not preserved the bass in these scenes sounds anemic The Sunfire Subwoofer utilizes differ...

Page 13: ...subwoofer s fixed high pass crossover point The signals coming out of the subwoofer s high pass outputs are not affected by any of the controls They are just a copy of the signals going in except that...

Page 14: ...ction of your receiver s power is transferred to the subwoofer There is no need to use the Speaker Level inputs if you are using a separate amplifier and preamplifier Such systems are best connected u...

Page 15: ...ill do fine as will the Stereophile test CD Step 1 Disconnect the subwoofer and run the main speaker with a tone in its passband 80 100Hz Measure the level Step 2 Disconnect the main speaker and recon...

Page 16: ...at 0dB 60 mVrms with volume control fully clockwise 0 75 Vrms from right input with volume control at 0dB 200 mVrms with volume control fully clockwise Input impedance 15 K for Line Level inputs 15 K...

Page 17: ...that your preamplifier or receiver s sub output is turned on Some systems only have a sub output signal when the front speakers are set to small If the preamplifier s subwoofer LFE output has an adju...

Page 18: ...hat they are disconnected where they first enter the room so they are making no connection to your preampli fier TV or any other component If the hum is caused by the cable TV line then you will need...

Page 19: ...any defective product and shall not in any event include property or any other incidental or consequential damages which may result from the failure of this product Some states do not allow limitation...

Page 20: ...Manual part number 913 008 00 RevC...

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