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Oct 30, 2018

Connecting Bose FreeSpace DS 40F to the amplifier

Hi All,

 

I really need some help. I have currently ceiling speaker Bose FreeSpace DS 40F, that I want to connect to amplifier HK AVR70 (specification below).

Each speaker is connected directly with the cable to amplifier, on each speaker transformer is set on 8 Ω variant. Here are my questions:

  1. Is it safe to connect these speaker to this amplifier? (Does it have enough power?)
  2. Should I use transformer as 8 Ω on the speakers or can I use 100W.
  3. Can I use amplifier Onkyo TX-NR686 to connect these speakers? (Is this safe?)

 

Bose FreeSpace DS 40F:

Frequency Response (+/-3 dB)   80 Hz - 17 kHz

Frequency Range (-10 dB) 70 Hz - 19 kHz

Recommended High-Pass Filter 70 Hz high-pass filter

Loudspeaker EQ Recommended

Overload Protection    PTC/Resistor

Long-Term Power Handling 40 W (160 W peak)

Sensitivity (SPL / 1 W @ 1 m) 87 dB SPL

Maximum SPL @ 1 m 103 dB SPL (109 dB SPL peak)

Nominal Impedance    8 Ω (transformer bypassed)

Transformer Taps (70/100 V)   70 V: 2.5 W, 5 W, 10 W, 20 W, 40 W 100 V: 5 W, 10 W, 20 W, 40

 

Amplifier Harman Kardon AVR70:

Multichannel power: 75W per channel, two channels driven @ 6 ohms, 20Hz – 20kHz, <0.1% THD; 100W per channel, two channels driven @ 6 ohms, 1kHz, <1% THD

Input sensitivity/impedance: 200mV/47k ohm

Frequency response: 10Hz – 100kHz

High instantaneous-current capability (HCC):  ±25 amps

 

Please help!

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Dec 5, 2016

Re: Connecting Bose FreeSpace DS 40F to the amplifier

Hi MiniJack,

 

Thanks for the post.  For the FreeSpace line of professional speakers, you will need to go to the Bose Pro forums for support.

 

Best Regards,

Brandon - Community Support