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#258294 - 2017-01-25 12:30 Power Conditioning on DSP8000SEs
Registered: 2006-04-18
Posts: 12
Trader99 Offline
Harmless
Trader99 Offline
Harmless

Registered: 2006-04-18
Posts: 12
Loc: Hong Kong
Does anyone know if the DSP8ks have any power conditioning built-in?

I've had the speakers for a number of years and been using the standard plugs that came with them, with a standard surge protected power block for the speaker that's far from the socket.

When I had the speakers upgraded to SE's it was recommended that some kind of power conditioning was used. All these were recommended: Audioquest NRG-4, Audioquest NRG=10, Isol-8 Mini-Sub Axis, Isol-8 Ultra Powerline.

But given the cost of the DSP8ks my feeling was that Meridian surely must be satisfied with their own conditioning as they only provide a standard power cable. If a better cable improved the sonic performance then it would be in Meridians interest to sell, recommend or include it in the package? Any thoughts? (I should note that I have no analogue in the system)

Thanks!


Audio: DSP8000SE upgrade, MC200, 818v3, Tidal, Bluesound
Movie1: Sony 520ES, 145”, Pan DMP-UB900, Oppo BDP-105D, Denon AVRX7200, Artcoustic Spitfire Subs, SL 8-4 (fronts) , SL4-2 (rears/sides), SL4-2 (4 ceiling)
Movie2: 861v4, DSP5500HC, Revel Ultima Sub 30, PS3, Sim2 HT5000, 134”screen, Faroudja DVP-1010, Consider4x M6 to replace DSP8k's
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#258296 - 2017-01-25 13:21 Re: Power Conditioning on DSP8000SEs [Re: Trader99]
Registered: 2007-11-03
Posts: 502
Dollar2 Offline
Paranoid android
Dollar2 Offline
Paranoid android

Registered: 2007-11-03
Posts: 502
Loc: Durham, CT, USA
I would look into a power conditioner only if I had poor power service from the utility. I have good power so I plug my 8KSEs straight into the wall. I do have a whole house surge protector in my panel that protects my A/V circuits.


Regards,
Bill

Sys 1: AC200, (2) DSP3200s, (4) P320is
Sys 2: 861v8+ID41, 218, (2) DSP8KSEs, DSP7200VCSE, (2) DSP5200s, Marantz UD9004, (2) JL Audio F113s,
Sys 3: 861v4+ID40, (2) DSP5200s, DSP5200HC
Sys 4: Prime HPA+PS, Focal Utopia
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#258298 - 2017-01-25 13:50 Re: Power Conditioning on DSP8000SEs [Re: Trader99]
Registered: 2001-05-23
Posts: 2,718
Gianni Offline
Great Green Arkleseizure
Gianni Offline
Great Green Arkleseizure

Registered: 2001-05-23
Posts: 2,718
Loc: North London, United Kingdom
I would make sure that any active power conditioning device can handle the current required by the DSP8000s.

Five 150w amplifiers per speaker (specifications vary across datasheets) is 750w. Offering a generous 33% efficiency suggest they really need ~2250w. At Hong Kong's 220V standard that is around 10 amps per speaker.

See for example the Isol-8 power specifications which show a maximum of 10 amps across one or all power outlets.

When my second-user DSP8000s were installed one of them blew the plug fuse at switch-on as somehow an IEC cable with a lower value (3 amp) fuse had got into the mix. A 13 amp fuse was needed.


Wonderful perfect quadraphonic sound with distortion levels so low as to make a brave man weep smile
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#258300 - 2017-01-25 14:46 Re: Power Conditioning on DSP8000SEs [Re: Gianni]
Registered: 2010-08-22
Posts: 255
Shankar Offline
Hitchhiker
Shankar Offline
Hitchhiker

Registered: 2010-08-22
Posts: 255
Loc: Chennai, India
I am using a Furman 1500K UPS on my Front 8000kSEs. It has a meter that indicates power consumption. At the maximum bearable volume the pair consumes 750W.

I have sized the UPS to provide a 100% headroom.

Shankar


Oppo UDP-203, Sonos, Nvidia Streamer, Cable, Trinnov Altitude32 into Dan D'Agostino Momentum into Wilson Alexa 2, Paradigm Sub 1, Monitor Audio In Wall surrounds, Sony VW550ES
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#258301 - 2017-01-25 15:52 Re: Power Conditioning on DSP8000SEs [Re: Shankar]
Registered: 2004-01-12
Posts: 2,290
Crion Online content
Senior Shouting Officer
Crion Online content
Senior Shouting Officer

Registered: 2004-01-12
Posts: 2,290
Loc: Stockholm, Sweden


I use a Shunyata Triton v2 for the three front speakers 2x DSP8000SE, DSP7200HCSE on a separate 16A/240V breaker.

My experience is that Meridian wants to keep the current clean and powerful. If you would put in a current limiting conditioner - that would hamper the instantaneous current draw of the speakers. Everything is drawn in pulses or bursts especially if you analyze the current draw of amplifiers.

Audio performance will not just be limited by the MAX current draw of the system, rather the burst draw capability of the complete system chain combined with low noise. This equals more percussive dynamics and clearer texture and ambience detail if attended to.


Future 861 MQA/24-192 system upgrade owner!
DSP8000SE, DSP7200SEHC, DSP5200SE sides, DSP7200SE rears, 861v8/ID41, MC200, Sim2 HT380 T2 1080P, Stewart Cinecurve 2.35:1, XEIT CM-5E Anamorphic lens, Apple-TV 4K with nFuse 5, HDI Dune BD Prime 3.0 with Wireworld Platinum HDMI -> UHD722 -> Audioquest Diamond RJ45. Shunyata Sigma Digital@861v8.
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#258302 - 2017-01-25 15:59 Re: Power Conditioning on DSP8000SEs [Re: Gianni]
Registered: 2000-05-28
Posts: 8,659
Fiddler Offline
President of the Imperial Galactic Government
Fiddler Offline
President of the Imperial Galactic Government

Registered: 2000-05-28
Posts: 8,659
Loc: Northeastern, USA
Originally Posted By Gianni
Five 150w amplifiers per speaker (specifications vary across datasheets) is 750w. Offering a generous 33% efficiency suggest they really need ~2250w. At Hong Kong's 220V standard that is around 10 amps per speaker.
You can't go by the output wattage what the input load requirement is. Just look at the specs.

From the DSP8000SE Data Sheet

POWER
20W standby, 920W max


- Fiddler (IMHO)

If you think listening to music is fun, try learning an instrument.
HT: G61RSL, 4x5K, 5.5KHC, 2xSC6000, Transporter, HD621, Philips BDP7501 4K, Tivo, 65" LG OLED 4K C6
Computer: Foobar2000, 5K, Mojo, HiFiMan HE1000 V2
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#258304 - 2017-01-25 16:12 Re: Power Conditioning on DSP8000SEs [Re: Fiddler]
Registered: 2001-05-23
Posts: 2,718
Gianni Offline
Great Green Arkleseizure
Gianni Offline
Great Green Arkleseizure

Registered: 2001-05-23
Posts: 2,718
Loc: North London, United Kingdom
So either Meridian are claiming a very high >81% efficiency for the DSP8000 power amplifiers or they are providing "optimistic" figures for power output and/or consumption. grin

Your point is well made and taken however. cool


Wonderful perfect quadraphonic sound with distortion levels so low as to make a brave man weep smile
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#258309 - 2017-01-25 16:33 Re: Power Conditioning on DSP8000SEs [Re: Gianni]
Registered: 2000-05-28
Posts: 8,659
Fiddler Offline
President of the Imperial Galactic Government
Fiddler Offline
President of the Imperial Galactic Government

Registered: 2000-05-28
Posts: 8,659
Loc: Northeastern, USA
Does Meridian state it can drive all 150watt amps simultaneously? No (not that I know of anyway).

Do they state how long they can sustain all 5 amps at 150watts? No (not that I know of).

There is also the response time. How quickly does that power need to be delivered? That's what the capacitors are for. But the faster the response the higher the instantaneous power required. But that does not make it all the way back to the AC lines.

The spec is what the AC line will see. Worst case. As an entire system. The Amp spec is what ONE amp can do.

There are a ton of variables between the input and output. Not just the efficiency of the power supply.

How much reserve is stored in the huge Toroidal transformer, how much is stored in those huge capacitors.

As pointed out above it would be VERY hard to get any where near the 950 watts. Yours ears would probably be bleeding before reaching 500 watts.

But also keep in mind that watt meters average over some time period. And it's hard to know what the peak load is over a shorter span of time and if that shorter span of time would even hit the AC line or be absorbed by the capacitors.

But I think the spec would be the safest spec to go with, with oodles of margin.


- Fiddler (IMHO)

If you think listening to music is fun, try learning an instrument.
HT: G61RSL, 4x5K, 5.5KHC, 2xSC6000, Transporter, HD621, Philips BDP7501 4K, Tivo, 65" LG OLED 4K C6
Computer: Foobar2000, 5K, Mojo, HiFiMan HE1000 V2
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#258323 - 2017-01-25 20:33 Re: Power Conditioning on DSP8000SEs [Re: Fiddler]
Registered: 2003-09-15
Posts: 375
JohnMcElfresh Offline
Hitchhiker
JohnMcElfresh Offline
Hitchhiker

Registered: 2003-09-15
Posts: 375
Loc: Boston, Massachusetts, USA
As I recall, long ago Meridian HQ (can't remember the individual) went on record on this forum stating they prefer NO power conditioning on DSP speakers.


My system: Apple TV, HD621, G68D, AC11, 218, DSP7200SE (L+R), DSP3200 (L+R Rear) [Zone 2 - M3100 L+R]
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#258332 - 2017-01-26 03:55 Re: Power Conditioning on DSP8000SEs [Re: JohnMcElfresh]
Registered: 2002-09-24
Posts: 285
JOE-C Offline
Hitchhiker
JOE-C Offline
Hitchhiker

Registered: 2002-09-24
Posts: 285
Loc: California, USA
I have been told the same thing (
no conditioners recommended) by a few of Meridian's hierarchy over the years.

I think every demo I have attended put on by a dealer with M reps in attendance have used Transparent Audio power cables plugged directly into the wall socket along with Transparent interconnects where needed.

I know M USA always liked Transparent audio products but I know that is another subject (after market power cords etc.) that can be controversial.


My M gear: 861v8 with ID41, 800v3, HD621, 8000.1(SEs),7200.1(SE),320s,3200s,5500s ,SW5500s ,MS200 (2nd zone),218.
Other: JVC RS-500 projector, Prismasonic HD-5000 anamorphic lens, Panasonic UB900, Oppo BDP-103D, QNAP TS-251 (M core and store).
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#258359 - 2017-01-26 16:50 Re: Power Conditioning on DSP8000SEs [Re: JohnMcElfresh]
Registered: 2007-09-01
Posts: 336
Cmr600 Offline
Hitchhiker
Cmr600 Offline
Hitchhiker

Registered: 2007-09-01
Posts: 336
Loc: Nairobi, Kenya
Originally Posted By JohnMcElfresh
As I recall, long ago Meridian HQ (can't remember the individual) went on record on this forum stating they prefer NO power conditioning on DSP speakers.
That's true, so let's see how we get on now mine are connected to Kenya power frown

Nervous will be an understatement!


M Customer since 1991...

M Kit: 861v8+ID41, 8000SE's, 7200HCSE, HD621, Explorer 2, AD88

Non M Kit: 27inch Roon Touchscreen (Lenovo), QNAP TVS-871-i7-16G 8 Bay NAS, Philips 4k Ambilight TV, Hue Lighting System, TiVO, PS3, ATV (v.4) Shure SE846 Headphones & a whole lot of Apple stuff...
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#258366 - 2017-01-26 19:47 Re: Power Conditioning on DSP8000SEs [Re: Cmr600]
Registered: 2012-12-04
Posts: 476
JaapJan Offline
Paranoid android
JaapJan Offline
Paranoid android

Registered: 2012-12-04
Posts: 476
Loc: Land van Maas en Waal, Netherl...
Don't worry there in Africa. It is either on or off but mostly off which saves you conditioning it. eek


System 1: MC200, 818v3, DSP7200SE
System 2: boxed (DSP5000.1, Monarchy DIP24/96, Squeezebox Duet.)
Office: MS200, STAX SRM-323II, SR303
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