Author Topic: The M1 speaker project with ABC switch  (Read 17153 times)

Offline HAL

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Re: The M1 speaker project with ABC switch
« Reply #15 on: October 16, 2024, 07:43:18 PM »
The M1 box speaker ABC switch is operational.  First using the original passive crossover for reference.

Will startup the logic box tomorrow to switch to the upgraded passive crossover for some run time.  The crossovers are always getting signal from the amp channel they are connected to for extra run time. 

Once that is running can then try the dspNexus 2/8 DSP crossover for the M1. 

To have a fair comparison, each amp being used is getting signal from an AK4499EX DAC channel in the dspNexus 2/8 and pink noise will be used to check level matching.

Fun stuff!

Offline HAL

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Re: The M1 speaker project with ABC switch
« Reply #16 on: October 18, 2024, 03:49:33 AM »
The AB is now setup for both the original and upgraded component passive crossovers.

All good, so waiting on the arrival of the other set of 4 XLR cables that match the first set of 4 to setup the dspNexus 2/8 as the DSP crossover instead of the passive crossovers for the C capability.  The ABC switching just needs the 4 amps outputs to run the speakers.

Offline HAL

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Re: The M1 speaker project with ABC switch
« Reply #17 on: October 18, 2024, 06:51:12 PM »
Last set of 4 amp to speaker cables to connect the amps via the switches to direct drive the tweeter and woofer.   This is for the dspNexus 2/8 channels to amps acting as the new DSP crossover for the M1 speakers.

Offline Nick B

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Re: The M1 speaker project with ABC switch
« Reply #18 on: October 19, 2024, 08:47:52 PM »
Last set of 4 amp to speaker cables to connect the amps via the switches to direct drive the tweeter and woofer.   This is for the dspNexus 2/8 channels to amps acting as the new DSP crossover for the M1 speakers.

Hi Rich,
Don't recall if you mentioned it before, but what wire are you using on those speaker cables?
Nick
Orchard Starkrimson Ultra amp
Hattor Big preamp
JMR Voce Grande speakers
Holo Cyan2 dac
Holo Red streamer
Hapa Aero digital coax
WyWires Silver cables
TWL Digital American II p cord
Audio Envy p cords
Roon, Tidal, Qobuz
PI Audio UberBUSS

Offline HAL

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Re: The M1 speaker project with ABC switch
« Reply #19 on: October 21, 2024, 04:45:59 AM »
Nick,
It is Belden 1309A 14awg Stranded wire with the PVC outer covering removed. 

I remove the PVC makes it a lot easier to handle.  The inner dielectric is polyethylene, so good for audio. 

Offline Nick B

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Re: The M1 speaker project with ABC switch
« Reply #20 on: October 21, 2024, 07:52:38 PM »
Nick,
It is Belden 1309A 14awg Stranded wire with the PVC outer covering removed. 

I remove the PVC makes it a lot easier to handle.  The inner dielectric is polyethylene, so good for audio.

Thanks, Rich.
Orchard Starkrimson Ultra amp
Hattor Big preamp
JMR Voce Grande speakers
Holo Cyan2 dac
Holo Red streamer
Hapa Aero digital coax
WyWires Silver cables
TWL Digital American II p cord
Audio Envy p cords
Roon, Tidal, Qobuz
PI Audio UberBUSS

Offline HAL

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    • Hollis Audio Labs
Re: The M1 speaker project with ABC switch
« Reply #21 on: October 25, 2024, 06:58:43 PM »
The M1 Acoustic Suspension speakers ABC Switch System is operational and playing music. 

Now to get it packed up for CAF2024 and work with the Magnepan LRS speakers.