APOGEE ACOUSTICS Full Range Ribbon Speaker System, Owner'S Manual And Assembly Instructions

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LOW IMPEDANCE DIRECT DRIVE
Introduction & Description
The APOGEE Acoustics Direct Drive is an alternate embodiment of the speaker.
It is intended to take advantage of certain low power Class A Amplifiers with
exceptional sonic merits, and still provide adequate dynamic range for most
music. These amplifiers are capable of driving a 1 ohm load with no problem.
If you have questions as to the adequacy of a particular product, consult your
dealer or amplifier manufacturer.
The characteristics of the APOGEE Direct Drive are summarized as follows:
1. Typical Peak SPL's of 110 dB with 25 watt Class A amplifiers into 8 ohms.
2. Speaker has a nominal impedance of 1.6 ohms.
3. Woofer and Tweeter are transformerless.
4. All speaker connections are with Fisher Speaker Connectors.
5. The Passive Crossover supplied must be used for proper contouring.
6. Midrange / Tweeter adjustment resolution is ⅓ dB.
HOOK-UP
Connection of the Direct Drive is as follows:
1. All connections to the Interface Box follow the convention:
Red Right / Black Left
2. Connect the Woofer directly to the bass Amp using the Fisher Connector
3. Connect the tweeter to the Interface Box using the Fisher Connectors.
NOTE: Black Left / Red Right.
4. Connect the Midrange to the Interface Box using the Fisher Connector.
5. Connect the Interface Box to the MRT power Amp using the Fisher Connectors
provided.
6. Check the phasing & Hook-up according to the accompanying figure.
7. Recheck the connections.
NOTE: For tri-amp direct drive, connect MR/TW power Amps per designation on
the Interface Box.
All APOGEE Full Range Ribbon Speakers may be retrofitted with direct drive
technology. See your dealer for details.
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