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#255632 - 2016-11-30 18:36 Re: SpeakerLink Preamp to all Legacy DSP [Re: RobertW]
Registered: 2000-05-28
Posts: 8,672
Fiddler Offline
President of the Imperial Galactic Government
Fiddler Offline
President of the Imperial Galactic Government

Registered: 2000-05-28
Posts: 8,672
Loc: Northeastern, USA
Originally Posted By RobertW
Yes everything is smooth.
?


- 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
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#255639 - 2016-11-30 21:33 Re: SpeakerLink Preamp to all Legacy DSP [Re: Fiddler]
Registered: 2005-10-22
Posts: 143
Curly Offline
Hitchhiker
Curly Offline
Hitchhiker

Registered: 2005-10-22
Posts: 143
Loc: West Midlands, UK
George,

Going back to your original comms question I recently did a similar change going from a legacy G91 to G61R-SL with all legacy speakers.

I just bought 3 off SL/SPDIF convertors (1 for Front L/R, 1 for Centre/Sub and 1 for Rear L/R) and then plugged the comms into the legacy output on the G61R-SL. Didn't make any changes to cabling between speakers and it all just worked. I was originally looking at AC12 etc but it's not required.

Paul


Current Mismash of components :
1) TV System Living Room
2) Media Streaming Kitchen
3) Cinema System
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#255645 - 2016-12-01 08:05 Re: SpeakerLink Preamp to all Legacy DSP [Re: Curly]
Registered: 2000-05-28
Posts: 8,672
Fiddler Offline
President of the Imperial Galactic Government
Fiddler Offline
President of the Imperial Galactic Government

Registered: 2000-05-28
Posts: 8,672
Loc: Northeastern, USA
Thanks Paul.

Which SL to SPDIF converters did you use?


- 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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#255698 - 2016-12-02 12:48 Re: SpeakerLink Preamp to all Legacy DSP [Re: Fiddler]
Registered: 2005-10-22
Posts: 143
Curly Offline
Hitchhiker
Curly Offline
Hitchhiker

Registered: 2005-10-22
Posts: 143
Loc: West Midlands, UK
Hi,

I got them from Rick at Audio Images (along with the G61). Not sure of the make. Just used a short SL cable from the G61 to the converters. I'll look later and see if there is a make on them but think they were just a black box.

Paul


Current Mismash of components :
1) TV System Living Room
2) Media Streaming Kitchen
3) Cinema System
4) Media Streaming Room 2
5) Other stuff in the post...
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#255702 - 2016-12-02 14:35 Re: SpeakerLink Preamp to all Legacy DSP [Re: Curly]
Registered: 2006-01-14
Posts: 645
ISB Offline
Paranoid android
ISB Offline
Paranoid android

Registered: 2006-01-14
Posts: 645
Loc: Gregory, Michigan, USA
Those sound like the ones that Rick developed himself.


Cheers, Ian

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#255714 - 2016-12-02 20:55 Re: SpeakerLink Preamp to all Legacy DSP [Re: Fiddler]
Registered: 2005-10-22
Posts: 143
Curly Offline
Hitchhiker
Curly Offline
Hitchhiker

Registered: 2005-10-22
Posts: 143
Loc: West Midlands, UK
Checked the converters and no name or description on them. They are about 1" square and about 2 inches long with SL connector one end and phono the other. As mentioned I think they are Audio Images own. I can send you a picture if you want.

Paul


Current Mismash of components :
1) TV System Living Room
2) Media Streaming Kitchen
3) Cinema System
4) Media Streaming Room 2
5) Other stuff in the post...
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#255715 - 2016-12-02 21:08 Re: SpeakerLink Preamp to all Legacy DSP [Re: Curly]
Registered: 2000-05-28
Posts: 8,672
Fiddler Offline
President of the Imperial Galactic Government
Fiddler Offline
President of the Imperial Galactic Government

Registered: 2000-05-28
Posts: 8,672
Loc: Northeastern, USA
That's fine, I was just curious what you used.



- 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
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#255716 - 2016-12-03 07:02 Re: SpeakerLink Preamp to all Legacy DSP [Re: Curly]
Registered: 2000-11-01
Posts: 2,675
RobertW Offline
Robert.W Great Green Arkleseizure
RobertW Offline
Robert.W
Great Green Arkleseizure

Registered: 2000-11-01
Posts: 2,675
Loc: Austria, Europe
Paul can you place a picture in the gallery ? Thanks


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#255816 - 2016-12-07 20:51 Re: SpeakerLink Preamp to all Legacy DSP [Re: Fiddler]
Registered: 2000-05-28
Posts: 8,672
Fiddler Offline
President of the Imperial Galactic Government
Fiddler Offline
President of the Imperial Galactic Government

Registered: 2000-05-28
Posts: 8,672
Loc: Northeastern, USA
Finally got my parts in.

I'm using this and will test tonight. I plan to check it with a scope.


Before adding Attenuation for SPDIF


After adding Attenuation for SPDIF (See Note below)


The above was correct for AES/EBU/XLR but wrong for Meridian SpeakerLink. I changed it to three 43 Ohm Resistors for -6dB attenuation and got 0.5V P-P output.


- 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
Edited by Fiddler; 2016-12-08 06:11.
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#255826 - 2016-12-08 04:42 Re: SpeakerLink Preamp to all Legacy DSP [Re: Fiddler]
Registered: 2000-05-28
Posts: 8,672
Fiddler Offline
President of the Imperial Galactic Government
Fiddler Offline
President of the Imperial Galactic Government

Registered: 2000-05-28
Posts: 8,672
Loc: Northeastern, USA
All measurements are on Unbalanced RCA with 75 Ohm Load.

Baseline Target DSP5000 Output (as expected 0.5V P-P)


Baseline Target G68-ADV Output (as expected 0.5V P-P)


G61SL SpeakerLink after Neutrik 110 to 75 Impedance Match
(I expected 3.3V P-P after impedance change but only 1.7V P-P was there, SpeakerLink is not standard AES/EBU/XLR Voltage of 4.0 it's only 2.0V)


G61SL SpeakerLink after Neutrik 110 to 75 Impedance Match with -16dB Attenuation
(I was assuming SpeakerLink was AES/EBU/XLR and it is not, so this was expected and too low 0.25V P-P)


G61SL SpeakerLink after Neutrik 110 to 75 Impedance Match with -6dB Attenuation
(I used the same attenuation used for AES to BNC, this was right on at 0.5V P-P [same as G68-ADV output above] with an impedance transformer)


For Grins I checked M-Audio CO3 AES/EBU/XLR Output still using Neutrik 110 to 75 Impedance Match.
It is true AES/EBU/XLR, supposed be 3.3 V (after impedance change) but measured a little short at 3.1 V. Note: CO3 will NOT pass 24/96 MHR.


For Grins I also checked HOSA CDL-313 AES/EBU/XLR Output still using Neutrik 110 to 75 Impedance Match.
It is also true AES/EBU/XLR, supposed to be 3.3 V (after impedance change) and it is dead nuts on 3.3 V. It WILL Pass 24/96 MHR.


Finished Passive SL to SPDIF


- 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
Edited by Fiddler; 2016-12-08 10:29.
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#255828 - 2016-12-08 08:21 Re: SpeakerLink Preamp to all Legacy DSP [Re: Fiddler]
Registered: 2004-10-20
Posts: 1,488
GMT Offline
Working on the ultimate question
GMT Offline
Working on the ultimate question

Registered: 2004-10-20
Posts: 1,488
Loc: Cambridge, Cambs, UK
Looks good George - how long do you think it took you to make?

Cheers
Tom


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#255831 - 2016-12-08 10:26 Re: SpeakerLink Preamp to all Legacy DSP [Re: GMT]
Registered: 2000-05-28
Posts: 8,672
Fiddler Offline
President of the Imperial Galactic Government
Fiddler Offline
President of the Imperial Galactic Government

Registered: 2000-05-28
Posts: 8,672
Loc: Northeastern, USA
Originally Posted By GMT
Looks good George - how long do you think it took you to make?


20 hrs for the 1st one
30 min each for the 2nd and 3rd one smile


- 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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