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#275718 - 2018-05-04 07:48 Re: Legacy DSP Aging Issues ca. 2018 ***** [Re: Gerard]
Registered: 2004-08-07
Posts: 660
Rodney Gold Offline
Paranoid android
Rodney Gold Offline
Paranoid android

Registered: 2004-08-07
Posts: 660
Loc: Cape Town, South Africa
The main issue that (oldish) speakers face is tweeter related in my experience, I have replaced many of them on the various DSP/active speakers that I have had. They deteriorate with age. I generally dumped the Meridian unit and used a Seas Excel tweeter (not the millenium) and had marked improvements
(there is a thread here with instructions).

I’ve only had 1 speaker with a blown amp (old DSP5000) and Meridian kindly sent me a PDF of the whole circuit diagram of the speaker and recommended replacement parts. It was a cheap and easy fix...

I also had a blown power supply in a G series processor and the replacement was an off the shelf unit.


Roon/Tidal, SBT, Trinnov ST2 , Twin Devialet D premiers, Vivid Audio Giya G1 Spirits, dedicated and treated room.
Meridian gear: 568.2mm and DSP5000's acting as TV speakers.
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#275722 - 2018-05-04 10:48 Re: Legacy DSP Aging Issues ca. 2018 [Re: Rodney Gold]
Registered: 2012-04-17
Posts: 1,904
3dit0r Offline
Knows where his towel is
3dit0r Offline
Knows where his towel is

Registered: 2012-04-17
Posts: 1,904
Loc: South UK
In DSP5000s at least, I know the load resistors on some models were prone to fail. Wiki about preventative maintenance here: Load resistor maintenance

I can tell you that when I bought my first pair of DSPs (5K smiley faces) about 5 years ago, they had the load resistor issue and, when I removed the back plates to take a peek, several visibly deteriorated caps (swelled and 'weeping'). Also a tweeter was past its best, audibly.

I was lucky as, at the time, Chris at Meridian Repair Shop was still in the repair business and he renovated the pair for a very reasonable sum including new load resistors and all re-capped, new tweeters, etc.

Regardless of reliability, the difference in sound was *not* subtle. Highly recommended, but you either need the proper information and skills, or to find a suitably skilled technician. One of the reasons I moved away from legacy was when Chris shut up shop...


818v3, DSP7200.2, Oppo BDP-105, Sony VPL-HW55ES projector, Kimber Mains Cables, Russ Andrews Torlyte Equipment Rack and Mains Filtration, GIK Acoustics Room Treatments
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#275761 - 2018-05-05 15:07 Re: Legacy DSP Aging Issues ca. 2018 [Re: 3dit0r]
Registered: 2016-10-31
Posts: 113
Nstzya Offline
Hitchhiker
Nstzya Offline
Hitchhiker

Registered: 2016-10-31
Posts: 113
Loc: Indianapolis, USA
Interesting. I guess that shows definitively that the Smileys are not immune from the resistor issue. Also some valuable added experience on the cap issue. Tarik is your resource in UK on that issue, BTW. See his cap kit in the Restaurant repairs forum.


DSP5000/18, 500.2, Bluesound Node 2 (MQA)
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#275762 - 2018-05-05 15:11 Re: Legacy DSP Aging Issues ca. 2018 [Re: Rodney Gold]
Registered: 2016-10-31
Posts: 113
Nstzya Offline
Hitchhiker
Nstzya Offline
Hitchhiker

Registered: 2016-10-31
Posts: 113
Loc: Indianapolis, USA
Originally Posted By Rodney Gold
The main issue that (oldish) speakers face is tweeter related in my experience, I have replaced many of them on the various DSP/active speakers that I have had. They deteriorate with age. I generally dumped the Meridian unit and used a Seas Excel tweeter (not the millenium) and had marked improvements
(there is a thread here with instructions).
Only difficult part for most is the milled down flange. Do you do that work yourself? And/or have someone who could do so for those interested? (BTW, I don’t think your link is working)


DSP5000/18, 500.2, Bluesound Node 2 (MQA)
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#275771 - 2018-05-05 20:52 Re: Legacy DSP Aging Issues ca. 2018 [Re: Nstzya]
Registered: 2012-04-17
Posts: 1,904
3dit0r Offline
Knows where his towel is
3dit0r Offline
Knows where his towel is

Registered: 2012-04-17
Posts: 1,904
Loc: South UK
As I understand it, Meridian design the amp specifically for the driver and also compensate various aspects of the driver in DSP. If you use a different tweeter than the unit originally specified, you’ll be outside those design parameters. Safest approach if you wish to hear the full benefit of what the designer originally implemented would be to replace with a new unit of the original specification.


818v3, DSP7200.2, Oppo BDP-105, Sony VPL-HW55ES projector, Kimber Mains Cables, Russ Andrews Torlyte Equipment Rack and Mains Filtration, GIK Acoustics Room Treatments
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#275773 - 2018-05-05 21:43 Re: Legacy DSP Aging Issues ca. 2018 [Re: 3dit0r]
Registered: 2016-10-31
Posts: 113
Nstzya Offline
Hitchhiker
Nstzya Offline
Hitchhiker

Registered: 2016-10-31
Posts: 113
Loc: Indianapolis, USA
True, as discussed in a number of other places, including the excellent Tweeter thread.

To summarize those, we are on the third version of SEAS made DSP line tweeters, all essentially the same electromechanically. What is currently available is the so called “Black Tweeter” SEAS H1054. Simply a black colored rather than native silver colored aluminum dome. Backwards compatible to all DSP legacy and SL models. (SE models of course have the special Berylium tweeter)

Hitchhiker Partner Bruce with CMB Integrations offers special pricing to HHers on new old stock Black Tweeters in the US.


DSP5000/18, 500.2, Bluesound Node 2 (MQA)
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#275774 - 2018-05-06 00:36 Re: Legacy DSP Aging Issues ca. 2018 [Re: Nstzya]
Registered: 2004-04-20
Posts: 451
Jdb-si Offline
Paranoid android
Jdb-si Offline
Paranoid android

Registered: 2004-04-20
Posts: 451
Loc: New Jersey, USA
It is possible to surface mount the Excel Millennium Tweeter as is, but it will no longer be flush with cabinet.


Theater: G68, G98DH, DSP6k, DSP55kC, SW1600x2, DSP55k, Plasma, (Zone 2)
Living room: DSP5k, DSP52kC, SW1600, G68, Sooloos MC600 (Zone 1)
Bedroom: M80
office: SACD, 861v4, DSP6k (Zone 3)
Storage: P350Ws, G55s, M33s, DSP33s, DSP5k, 501, 518, 561
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#275839 - 2018-05-08 09:26 Re: Legacy DSP Aging Issues ca. 2018 [Re: Jdb-si]
Registered: 2018-04-02
Posts: 4
DigitalDunce Offline
Harmless
DigitalDunce Offline
Harmless

Registered: 2018-04-02
Posts: 4
Loc: Poole, UK
Thank you to Tarik and other posters on this thread:

I recently lost the sound on one of my 24/96 DSP5000’s that I bought new circa 2001 and that have previously given me no problems. After finding that Chris Coaster is no longer repairing (he did a great job on my G68) the usual fruitless enquiries with Meridian agents and other audio repairers, I was faced with replacing them.

With advanced years, hearing loss and tinnitus I had no ambition to spend a lot of money doing this, so without any hope of a result went in to a local firm of engineers. Although they knew nothing about Meridian, they said they would take a look and let me know. They replaced resistors and caps for an exceptionally reasonable cost and all was operational again. I ended up taking them the other main and the centre and they carried out the same work. Great guys, really helpful, so if you are within reach:

Intek Electronics, Poole, Dorset.

Chris

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#275840 - 2018-05-08 09:36 Re: Legacy DSP Aging Issues ca. 2018 [Re: DigitalDunce]
Registered: 2012-04-17
Posts: 1,904
3dit0r Offline
Knows where his towel is
3dit0r Offline
Knows where his towel is

Registered: 2012-04-17
Posts: 1,904
Loc: South UK
Good to know, thanks!

I also noticed, given that I popped on Chris' current site that he now recommends JSAudio for repairs - Meridian Legacy repairs


818v3, DSP7200.2, Oppo BDP-105, Sony VPL-HW55ES projector, Kimber Mains Cables, Russ Andrews Torlyte Equipment Rack and Mains Filtration, GIK Acoustics Room Treatments
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#275842 - 2018-05-08 11:33 Re: Legacy DSP Aging Issues ca. 2018 [Re: 3dit0r]
Registered: 2002-08-28
Posts: 4,329
Mr Meridian Offline
President of the Imperial Galactic Government
Mr Meridian Offline
President of the Imperial Galactic Government

Registered: 2002-08-28
Posts: 4,329
Loc: Perthshire, Scotland
Isn't that the firm that Carl later posted an update about? ie they declined to take any Meridian work?

Cheers (minimal cheer on this one)

George

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#275843 - 2018-05-08 11:33 Re: Legacy DSP Aging Issues ca. 2018 [Re: 3dit0r]
Registered: 2008-05-23
Posts: 7,772
Carl Offline
President of the Imperial Galactic Government
Carl Offline


President of the Imperial Galactic Government

Registered: 2008-05-23
Posts: 7,772
Loc: Central England, UK
JSAudio ... Unfortunately that's not the case anymore frown see ...

Repair, service and upgrade of Meridian legacy products

Regards,
Carl


861v6+ID40, HD621, 8000.2, 7200HC, 7200, SKYQ Silver, PS3, PDP-LX6090, QNAP TS870-Pro (8*6TB), Roon, iPadAir2.
[In Reserve] C15, MD600 (2*3TB), TwinStore RM (2*2TB)
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#275865 - 2018-05-08 19:44 Re: Legacy DSP Aging Issues ca. 2018 [Re: Carl]
Registered: 2012-04-17
Posts: 1,904
3dit0r Offline
Knows where his towel is
3dit0r Offline
Knows where his towel is

Registered: 2012-04-17
Posts: 1,904
Loc: South UK
Thanks Carl, George, good to know.

Oh dear. That’s quite depressing really, as I really love some of the legacy gear, but it’s now getting to the age where even 500 series will need at least a good recap.

I suppose any high end repair service could take it on, but this makes Chris shutting up shop even more of a loss (although perfectly understandable for him on a personal career level).

Would love to hear of any suitably reputable, qualified engineers taking on this work.


818v3, DSP7200.2, Oppo BDP-105, Sony VPL-HW55ES projector, Kimber Mains Cables, Russ Andrews Torlyte Equipment Rack and Mains Filtration, GIK Acoustics Room Treatments
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