Topic Options
Ash wrote:
Copyright © 1998
Cadman Enterprises Ltd
Welcome to the Graham Slee Audio Products Owners Forum  Open to all owners plus those contemplating the purchase of a Graham Slee HiFi System Components audio product and wishing to use this forum's loaner program: join here (Rules on posting can be found here) This website along with trade marks Graham Slee and HiFi System Components are owned by Cadman Enterprises Ltd |
What speakers do you use with your Proprius? |
Post Reply 
|
Page 123 4> |
| Author | |
Ash 
Senior Member 
Joined: 18 Mar 2013 Location: Dorset Status: Offline Points: 4334 |
 Post Options
 Thanks(1)
 Quote Reply
 Topic: What speakers do you use with your Proprius?Posted: 27 Aug 2023 at 3:43pm |
|
Thank you for the replies.
I was considering multi-way horizontally and vertically with the same driver for a larger image size (potentially) and even less mechanical excursion for the bass. Don't need more power and no need to reduce dispersion. I'll have to try it; cardboard boxes are cheap.
|
|
|
We do not see things as they are. We see things as we are.
|
|
 |
|
|
Graham Slee
Admin Group 
Retired Joined: 11 Jan 2008 Location: South Yorkshire Status: Offline Points: 16298 |
Post Options
Thanks(1)
Quote Reply
Posted: 27 Aug 2023 at 11:54am |
|
It is true that the amplifier's load can destroy the amplifier should that load be a short circuit, or too low an impedance, or its capacitance or inductance compromises the amplifier's stability. Therefore, an amplifier ought to be designed with these things taken into consideration. The output inductor protects against some degree of capacitive short/overload. The Zobel network compensates for the loss of loading. And the phase and gain margins must not reduce to, or go beyond zero (or even approach it) when the amplifier is subjected to known difficulties. Thermal conditions are easily detected simply by touch, and if a particular load results in the heatsink/casework getting hotter than you feeling comfortable with, then maybe something is amiss. Much of the worry comes about by manufacturers who omit safeguards on the premise that their circuit is "perfect" (which circuits seldom are) or "it sounds better" without them. |
|
|
That none should be able to buy or sell without a smartphone and the knowledge in how to use apps
|
|
|
|
|
Fatmangolf
Moderator Group 
Joined: 23 Dec 2009 Location: Middlesbrough Status: Offline Points: 8998 |
Post Options
Thanks(2)
Quote Reply
Posted: 27 Aug 2023 at 9:27am |
|
In series add the inductances together so two identical drivers gives double. In parallel 1/L = 1/L1 + 1/L2. So 4 in series/parallel have same inductance as one driver. No harm to the amp or drivers, just sacrificing two or four cardboard boxes...
Are you experimenting or looking for a particular change in sound from using multiple drivers, Ash? A vertical line array would reduce vertical dispersion and give a higher sound image, albeit with interference patterns as you note. Usually multiple drivers are for more power handling, coil heating and lower cone excursion. Comb filtering would be a problem at higher frequencies unless you crossover to a single driver. With two drivers In series on a panel/open baffle you could have a capacitor connected across one of the drivers so its output rolls off? |
|
|
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. |
|
|
|
|
Ash
Senior Member
Joined: 18 Mar 2013 Location: Dorset Status: Offline Points: 4334 |
Post Options
Thanks(0)
Quote Reply
Posted: 27 Aug 2023 at 8:29am |
|
In terms of impedance, it would be fine.
In terms of inductance, I don't know as I don't understand the physics of inductors/back EMF for series/parallel combinations. I have four pairs of CHP-90 drivers that I could try a 2x2 series-parallel on each side but it would probably sound worse overall than a single driver per side, especially when you start considering phase shifts and comb effects at different listening positions. Keeping it simple is probably best.
|
|
|
We do not see things as they are. We see things as we are.
|
|
|
|
|
Graham Slee
Admin Group
Retired Joined: 11 Jan 2008 Location: South Yorkshire Status: Offline Points: 16298 |
Post Options
Thanks(0)
Quote Reply
Posted: 27 Aug 2023 at 12:58am |
Sorry I missed this post. It would work, but I cannot comment on the sound you'd get as it would depend on multiple factors of the proposed design.
|
|
|
That none should be able to buy or sell without a smartphone and the knowledge in how to use apps
|
|
|
|
|
Bags
Regular 
Joined: 14 Apr 2018 Status: Offline Points: 80 |
Post Options
Thanks(0)
Quote Reply
Posted: 24 Aug 2023 at 6:49pm |
|
Just reporting back on my friend trying out my proprius amps with his Kef refs.
As Graham suggested, no sweat. Those big output caps kept everything nicely in control.
|
|
|
|
|
Ash
Senior Member
Joined: 18 Mar 2013 Location: Dorset Status: Offline Points: 4334 |
Post Options
Thanks(0)
Quote Reply
Posted: 07 Aug 2023 at 8:59pm |
|
Graham, is there any limit to line arrays with the Proprius?
For example, if I had 16 of the same driver per channel and each driver has 8 Ohm impedance and I wire a 4x4 series-parallel arrangement on each side, would things still sound good?
|
|
|
We do not see things as they are. We see things as we are.
|
|
|
|
|
Post Reply
|
Page 123 4> |
Tweet
|
| Forum Jump | Forum Permissions You cannot post new topics in this forum You cannot reply to topics in this forum You cannot delete your posts in this forum You cannot edit your posts in this forum You cannot create polls in this forum You cannot vote in polls in this forum |
Forum Software by Web Wiz Forums® version 12.01
Copyright ©2001-2018 Web Wiz Ltd.
This page was generated in 0.173 seconds.
Copyright ©2001-2018 Web Wiz Ltd.
This page was generated in 0.173 seconds.