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User's Manual

4

Your Sunfire Subwoofer should reach

you in perfect condition. If you do notice
any shipping damage, please contact
your Sunfire Dealer immediately.

Gently lift out the unit and remove all

the packing material. It is important to
save all the packing materials and the
box in case your subwoofer ever needs
to be moved or shipped for repair.

Make sure that you keep your sales

receipt. It is the only way to establish the
duration of your Limited Warranty and it
may come in useful for insurance
purposes.

Please take a moment to fill out and

mail the Sunfire Warranty Registration
card. Also read the serial number located
on the control panel and record it here:

Unpacking

Features

1250 watt, high efficiency amplifier

Very low distortion

Long throw, premium quality driver

Extremely compact size

Automatic signal-sensing turn-on
and standby mode

Line level inputs

Speaker-level binding post inputs

Line level high-pass outputs

Flat/Video contour switch

Continuously variable phase
control

Continuously variable crossover
control, 35 Hz to 100 Hz

Continuously 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 Sunfire

True Subwoofer Architectural. I hope you
enjoy it and the music it makes as much
as I have enjoyed creating it for you.

The big breakthrough features of the

subwoofer are its uncanny tracking
downconverter and its long throw, high
back-electromotive force driver. Taken
together, they provide this subwoofer
with as much bass as you could get from
several 15 inch drivers mounted in a
cabinet the size of a small refrigerator.

Introduction

Serial Number:

Purchased from:

Date:

Care

To maintain the speaker cabinet’s

finish, first unplug the power cord and
then use a soft, slightly dampened cloth
to clean the surfaces and finish off with a
dry cloth.

To keep the large rubber surrounds

soft and supple for 20 years or more,
treat them with MINK OIL, available at
most shoe repair stores. Rub a generous
amount into the surrounds with a soft
cloth about once a year (more often if
you live in a dry climate).

If your Sunfire Subwoofer needs

servicing, please read the Troubleshoot-
ing section on page 17. If a problem still
persists, contact your nearest authorized
Sunfire Dealer.

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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