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Proprius system integration
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janvda View Drop Down
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Joined: 25 Feb 2023
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Points: 17 		Post Options Post Options   Thanks (0) Thanks(0)   Quote janvda Quote  Post ReplyReply Direct Link To This Post Posted: 26 Feb 2023 at 10:05am
Originally posted by CageyH CageyH wrote:

The only advantage I found was that you could use much better speaker cable for the same budget if the amps were next to the speakers.

Thx for the reply. 
That could indeed be considered an advantage. But I´m one of "those" guys, who is hard to convince of the advantage of expensive or esotheric speaker cables. Mind you, I don´t have trained hearing, nor am I an electrical or electronics engineer. So I can only go by my own experience. I do understand the importance of inductance and capacitance in cables (or at least I think I do). Hence I tend to stick to Mogami or Van Damme cabling.
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Graham Slee View Drop Down
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Joined: 11 Jan 2008
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Points: 16314 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Graham Slee Quote  Post ReplyReply Direct Link To This Post Posted: 26 Feb 2023 at 10:38am
Originally posted by janvda janvda wrote:

I'm one of "those" guys, who is hard to convince of the advantage of expensive or esoteric speaker cables

GOOD!

Originally posted by janvda janvda wrote:

I do understand the importance of inductance and capacitance in cables (or at least I think I do).

Using extremes:

If the cable was sufficiently capacitive, it would divide the amplifier output at some signal frequency (an audible frequency), which, by negative feedback, would cause the amplifier to boost its output, and eventually go pop! (or the protection circuit would operate - whichever came first).

If the cable was sufficiently inductive, it would attenuate the upper frequencies to the load, and "dull" the treble. It would also "remove" the amplifier load, and if the amplifier were not sufficiently stable, would eventually go pop! (or the protection circuit would operate - whichever came first).

Inductance and capacitance in cables are inversely related - one goes up the other comes down.

The BBC found that a heavy duty microphone cable gave the best balance between the two, and used miles of a particular brown in colour jacketed microphone cable, ignoring the shield.

The Spatia speaker cable is the equivalent of the "BBC microphone cable" without a shield, and of slightly greater cross sectional area (less lossy), and a little lower capacitance.
That none should be able to park up and enjoy the view without a smartphone and the knowledge in how to use apps
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CageyH View Drop Down
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Joined: 30 Apr 2012
Location: Toulouse, Franc
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Points: 1751 		Post Options Post Options   Thanks (0) Thanks(0)   Quote CageyH Quote  Post ReplyReply Direct Link To This Post Posted: 26 Feb 2023 at 10:47am
Originally posted by janvda janvda wrote:

Originally posted by CageyH CageyH wrote:

The only advantage I found was that you could use much better speaker cable for the same budget if the amps were next to the speakers.

Thx for the reply. 
That could indeed be considered an advantage. But I´m one of "those" guys, who is hard to convince of the advantage of expensive or esotheric speaker cables. Mind you, I don´t have trained hearing, nor am I an electrical or electronics engineer. So I can only go by my own experience. I do understand the importance of inductance and capacitance in cables (or at least I think I do). Hence I tend to stick to Mogami or Van Damme cabling.

I am another of those guys, preferring to find sensibly priced alternatives, often using the same base cable as a HiFi offering, without the associated price tag.
Kevin
European loan coordinator, based near Toulouse, France.
Funkified SL1200 Mk.II, BB3, Firebottle Kin , ADI-2 DAC FS, Modulus 686, PD-S703, Solo UL, Triangle Antal EZ
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Help with bass View Drop Down
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Joined: 07 Aug 2020
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Points: 76 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Help with bass Quote  Post ReplyReply Direct Link To This Post Posted: 05 Apr 2025 at 8:21pm
With apologies if I have missed it elsewhere in the forum, can I ask what is the quoted Gain figure (in dB) for the Proprius amps?
Thanks!
D
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Fatmangolf View Drop Down
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Joined: 23 Dec 2009
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Points: 9695 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Fatmangolf Quote  Post ReplyReply Direct Link To This Post Posted: 06 Apr 2025 at 7:37am
535mV in for rated output 26W into 8 ohms so the voltage gain is 28.6 dB.
Jon

Open mind and ears whilst owning GSP Genera, Accession M, Accession MC, Elevator EXP, Solo ULDE, Proprius amps, Cusat50 cables, Lautus digital cable, Spatia cables and links, and a Majestic DAC.
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Help with bass View Drop Down
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Joined: 07 Aug 2020
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Points: 76 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Help with bass Quote  Post ReplyReply Direct Link To This Post Posted: 06 Apr 2025 at 7:55pm
Excellent, thanks Fatmangolf👍
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