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#261988 - 2017-03-23 17:47 Re: New tweeters **** [Re: J in Ibiza]
Registered: 2007-09-23
Posts: 1,548
Syles Offline
Working on the ultimate question
Syles Offline
Working on the ultimate question

Registered: 2007-09-23
Posts: 1,548
Loc: London, UK
4 to 6 ohms wouldn't result in no sound; a little lower dB due to the higher impedance, but there would still be sound.

I think your 'new' tweeters are broken.

All the best,

Steve


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#262035 - 2017-03-23 23:45 Re: New tweeters [Re: Syles]
Registered: 2004-04-20
Posts: 424
Jdb-si Offline
Paranoid android
Jdb-si Offline
Paranoid android

Registered: 2004-04-20
Posts: 424
Loc: New Jersey, USA
Can confirm using the Excel Milleniums worked perfectly. Probably broken tweeter as Steve suggests.


Theater: G68, G98DH, DSP6k, DSP55kC, DSP55k, Plasma, Sooloos (Zone 2)
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#262049 - 2017-03-24 07:11 Re: New tweeters [Re: Syles]
Registered: 2008-02-04
Posts: 3
J in Ibiza Offline
Harmless
J in Ibiza Offline
Harmless

Registered: 2008-02-04
Posts: 3
Loc: Valencia, Spain
Steve, thanks for the input. Do you think its possible the problem could be that I tried powering up the system with 1 new and 1 old tweeter and this confused the electronics?

BTW, it wasn't just no sound from the tweeter - there was no sound from any of the drivers on the speaker with the new tweeter, but the other speaker was OK.

John

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#262051 - 2017-03-24 07:35 Re: New tweeters [Re: J in Ibiza]
Registered: 2007-09-23
Posts: 1,548
Syles Offline
Working on the ultimate question
Syles Offline
Working on the ultimate question

Registered: 2007-09-23
Posts: 1,548
Loc: London, UK
The symptoms you describe make me think that either the new tweeter is short circuit, or that you shorted something when connecting it.

This may have caused the loudspeaker to go into a safe mode and shut the amplifiers down to prevent damage.

Have you any way of testing the tweeters; a simple multimeter could confirm a short or open circuit

All the best,

Steve


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#262066 - 2017-03-24 11:51 Re: New tweeters [Re: Syles]
Registered: 2008-02-04
Posts: 3
J in Ibiza Offline
Harmless
J in Ibiza Offline
Harmless

Registered: 2008-02-04
Posts: 3
Loc: Valencia, Spain
Thanks Steve.

OK, this is what I did. Tested the tweeters - no short.

I decided to install both tweeters, and hey presto - they're working perfectly. I think you were right, that I must have shorted something the first time. Anyway, I'm very happy now everything's working. I should have changed the tweeters years ago - they are 25 years old, and now the speakers sound better than I can ever remember.

So for anyone thinking about replacing their tweeters - just do it, its really worth it. Its like having a new set of speakers again.

I used SEAS H519 25TFFC NEW 2015 Manufacture and no mods were necessary - they dropped straight in, albeit, because the flanges are not as deep, they are recessed a millimetre or two.

Best regards,

John

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#271516 - 2018-01-07 18:36 Re: New tweeters [Re: J in Ibiza]
Registered: 2016-10-31
Posts: 31
Nstzya Online content
Harmless
Nstzya Online content
Harmless

Registered: 2016-10-31
Posts: 31
Loc: Indianapolis, USA
At the risk of inciting a huge groan of protest about dredging this thread out of the dust bin ... again! ... my apologies.

Having read through all 7 pages, I am no closer to understanding what a current true drop in replacement is for the original 18 bit DSP5000 Silver voice coil/Silver dome tweeter? I have seen SEAS H539, H519, a black dome (not sure which model), etc...

Although I built a Hafler power amp kit back in college, I was a naive kid back then and kinda oblivious... Wizened by experiences since, I am already intimidated by the notion of what sounds like needing to solder in any replacement and overheating and melting a voice-coil in the process. I am definitely not interested in lathing off flange thickness, or routing, filing, or otherwise modifying the cabinet. I’d like a true drop in replacement. And if that is the OEM, where to get two in the USA since that seems to be an issue as well... Not sure that I saw that any of the “improvement” options was a drop-in, but if there is... Personally, I don’t care if something is a millimeter or two proud or shallow either.

I imagine those following me here into this wormhole would like such a definitive summary of the state of tweeter update/replacement/rejuvenation for legacy DSP speakers as of early 2018... so if one of the sage wise men would indulge us with a bit of their wisdom/time?

Thanks
-Scott

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#271527 - 2018-01-08 04:37 Re: New tweeters [Re: Nstzya]
Registered: 2009-11-10
Posts: 1,162
CMB Integrations - Bruce Offline
Meridian Partner Pan-dimensional being
CMB Integrations - Bruce Offline
Meridian Partner
Pan-dimensional being

Registered: 2009-11-10
Posts: 1,162
Loc: Lexington, South Carolina, USA
I keep them in stock. They are very easy to change out


www.cmbintegrations.com

Personal System #1 Theta Digital Cassablanca 4, 818v3, 218, DSP8000.2SE, DSP7200SEHC, Boston Acoustics Lynnfield 500L series 2, Monitor Audio Silver 10, ATI 200WX5 Amp, JVC RS15, Black Diamond Zero Edge screen. QNAP TS-251 3TB
Personal System #2 F80.

Crestron control and multi room audio via Meridian 258 amplifiers.
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