Speaker Guidelines

•  DO NOT connect a speaker load with a total impedance below the minimum rating of your amplifier to prevent damage to your equipment.

•  DO NOT connect speaker(s) with a total power handling capacity that is less than the power output rating of your amplifier to prevent damage to your equipment.

•  ALWAYS switch your system power OFF before connecting or disconnecting speakers.

•  ONLY use unshielded speaker cable of 18 gauge or heavier (16 or 14 gauge) for speaker connections. Shielded instrument cable WILL NOT work and may damage your equipment.

•  ONLY connect one amplifier to each speaker load. Two amplifiers connected to a single load WILL NOT

work and may damage your equipment.

Use the impedance and power ratings on your amplifier and speakers to determine if a particular combination

of speakers is appropriate for your amplifier. NOTE: All SWR® speaker enclosures, as well as most others, will be connected in parallel (NOT series) when linked (daisy-chained) together. Therefore, these guidelines apply only to parallel speaker configurations.

The speaker illustration gives you the total impedance load calculations for various speaker impedance combinations (Ω=ohms). The ideal speaker load (total impedance) is equal to the minimum impedance

rating of your amplifier. Operating below the amp's minimum impedance rating can overheat your amplifier and cause damage. Operating above the amp's minimum impedance rating, while safe,

reduces the amplifier’s maximum power output.

Something else to consider: You can obtain the same group total impedance load from different combinations of speaker impedances (see illustration). If each speaker in a group has the same impedance, each speaker will receive the same amount of power from your amplifier. However, if

impedances are not all equal, the lowest impedance speakers will get the most power. For example, if you connect an 8Ω and a 16Ω speaker to an amp output

of 30 watts, the 8–ohm speaker will receive about 20 of those watts (and be twice as loud as the 16-ohm speaker).

Take this into consideration when calculating power handling capacities and when positioning your speaker enclosures.

For an in-depth discussion of setup tips for amplifiers and speakers (including a look at impedance and power rating issues), visit the Support area of the SWR website at www.swramps.com.

Specifications

TYPE:

 

PR 761

 

 

 

 

PART NUMBERS:

 

4420500010 (120V, 60Hz)

 

4420503010 (240V, 50Hz) AUS

 

 

 

4420504010 (230V, 50Hz) UK

 

4420506010 (230V, 50Hz) EUR

 

 

 

4420507010 (100V, 50Hz) JPN

 

 

 

 

POWER REQUIREMENT:

 

575W

 

 

 

 

POWER AMP:

MINIMUM OUTPUT IMPEDANCE:

 

 

 

 

 

POWER OUTPUT:

160W RMS into 4Ω @ < 1% THD, 1kHz

 

 

 

PRE AMP:

INPUT IMPEDANCE:

4.7MΩ (1/4" input); 20kΩ (XLR input)

 

 

 

 

SENSITIVITY AT FULL POWER:

9mV (1/4" input); 900µV (XLR input)

 

 

 

TONE CONTROLS:

 

±15dB @ frequency knob setting

 

 

 

COMPRESSION:

RATIO:

1:1 to 20:1

 

 

 

 

EFFECTS LOOP:

SEND IMPEDANCE:

1kΩ

 

 

 

 

 

RETURN IMPEDANCE:

10kΩ

 

 

 

 

BALANCED LINE OUT:

SEND IMPEDANCE:

50Ω

 

 

 

 

SPEAKERS:

WOOFER:

Eminence Neo 10" 4 ohm (0076017000)

 

 

 

 

HORN:

Eminence 8 ohm (0067254000)

 

 

 

 

DIMENSIONS:

HEIGHT:

19.5 in (49.5 cm)

WIDTH:

15 3/8 in (39 cm)

DEPTH:

14.5 in (36.8 cm)

WEIGHT:

 

26.5 lb (11.6 kg)

 

 

 

 

Product specifications are subject to change without notice.

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SWR Sound Spellbinder Blue manual Speaker Guidelines, Specifications