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Cvr d-2004
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benjrig View Drop Down
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Joined: 09 June 2019
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Points: 13 		Post Options Post Options   Thanks (0) Thanks(0)   Quote benjrig Quote  Post ReplyReply Direct Link To This Post Posted: 29 June 2022 at 5:34pm
How did you manage to get the software to work in the end? Mine just keeps coming up with no device found?
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snowflake View Drop Down
Old Croc
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Joined: 29 December 2004
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Points: 3443 		Post Options Post Options   Thanks (0) Thanks(0)   Quote snowflake Quote  Post ReplyReply Direct Link To This Post Posted: 29 June 2022 at 6:41pm
finally realised that the software on the disc shipped with the amp was not the right version. ask them to email you correct version - or PM me if no luck and I will find the file they sent to me. Once I had the correct version it all just worked without any setup required. latest amps don't need laptop connected with USB>LAN converter - just connect them to network and the software will automatically find them.
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benjrig View Drop Down
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Points: 13 		Post Options Post Options   Thanks (0) Thanks(0)   Quote benjrig Quote  Post ReplyReply Direct Link To This Post Posted: 29 June 2022 at 8:30pm
Originally posted by snowflake snowflake wrote:

finally realised that the software on the disc shipped with the amp was not the right version. ask them to email you correct version - or PM me if no luck and I will find the file they sent to me. Once I had the correct version it all just worked without any setup required. latest amps don't need laptop connected with USB>LAN converter - just connect them to network and the software will automatically find them.


cheers mate will give that ago and give them an email
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snowflake View Drop Down
Old Croc
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Joined: 29 December 2004
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Points: 3443 		Post Options Post Options   Thanks (0) Thanks(0)   Quote snowflake Quote  Post ReplyReply Direct Link To This Post Posted: 08 July 2023 at 4:10pm
Originally posted by snowflake snowflake wrote:

Originally posted by RoadRunnersDust RoadRunnersDust wrote:

Originally posted by snowflake snowflake wrote:

220uF 250V rather than 330uF 220V ... 100uF caps rather than 150uF


For the PSU I think if one set is Low ESR and the other isn't will make greater difference than the capacitance, 1/3rd less capacity in the main power rails is fairly significant though (assuming the ratings are accurate)...


had another look at the caps

CVR uses Samxon 220uf 250V. 12 on each channel and 12 on power supply. plus 6* Samxon 100uF 400V
Morin has LH.Nova 330uF 220V. 12 on each channel and 12 on power supply plus 6*Nichicon 150uF 400V

I haven't found any spec sheets for these yet to check ESR.


got a Sinbosen D4-3000 DSP last week. It is virtually identical to the Morin amp and has definitely been assembled in the same factory.

Sinbosen caps are KXJ 270uF 250V and Nichicon 120uF 400V

cores on the power supply are similar but have different part numbers on them - can't find specs online though.

Sinbosen power lead is 3mm2 rather than 2.5mm2 on the Morin and CVR

Sinbosen 12V fans are 4*1.4A which is four times as much airflow as the Morin or CVR

Will do a post about the Sinbosen DSP when I've had more of a play with it.

Morin:
https://www.mouser.co.uk/datasheet/2/240/Littelfuse_Discrete_MOSFETs_N-Channel_HiPerFETs_IX-1856253.pdf

CVR:
https://datasheetspdf.com/pdf-file/585880/FairchildSemiconductor/FDH45N50F/1

Sinbosen:
Oriental Semiconductor looks like it says
OSG65R041HT3Z D10P05N but can't find a spec sheet for that exact part number
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RoadRunnersDust View Drop Down
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Points: 617 		Post Options Post Options   Thanks (0) Thanks(0)   Quote RoadRunnersDust Quote  Post ReplyReply Direct Link To This Post Posted: 08 July 2023 at 8:53pm
Quote  Sinbosen 12V fans are 4*1.4A which is four times as much airflow as the Morin or CVR

Current isn’t inherently linked to CFM of a fan…
www.guildfordcablecompany.co.uk
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snowflake View Drop Down
Old Croc
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Joined: 29 December 2004
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Points: 3443 		Post Options Post Options   Thanks (0) Thanks(0)   Quote snowflake Quote  Post ReplyReply Direct Link To This Post Posted: 09 July 2023 at 11:04am
Originally posted by RoadRunnersDust RoadRunnersDust wrote:

Quote  Sinbosen 12V fans are 4*1.4A which is four times as much airflow as the Morin or CVR

Current isn’t inherently linked to CFM of a fan…


not inherently, but when components are de-rated by 5W/C cooling can be an issue. the CVR has a heat sensor on each channel and on the power supply so will try to investigate how hot it gets at high output.
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Points: 617 		Post Options Post Options   Thanks (0) Thanks(0)   Quote RoadRunnersDust Quote  Post ReplyReply Direct Link To This Post Posted: 09 July 2023 at 10:44pm
But what has that got to do with baseless statements about air flow? Confused

Air flow is also only one small cog in the machine of thermal management, it doesn’t matter if it shifts more air than a Boeing 737 if it’s not ducted to give adequate air flow over the relevant components 
www.guildfordcablecompany.co.uk
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snowflake View Drop Down
Old Croc
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Joined: 29 December 2004
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Points: 3443 		Post Options Post Options   Thanks (0) Thanks(0)   Quote snowflake Quote  Post ReplyReply Direct Link To This Post Posted: 09 July 2023 at 10:57pm
Originally posted by RoadRunnersDust RoadRunnersDust wrote:

But what has that got to do with baseless statements about air flow? Confused

Air flow is also only one small cog in the machine of thermal management, it doesn’t matter if it shifts more air than a Boeing 737 if it’s not ducted to give adequate air flow over the relevant components 


It's one of a very few obvious objective differences between two otherwise identical amps. Whether it is significant depends on whether you believe the higher power specs and whether these seem compatible with the differing cap and MOSFET specs.
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Elliot Thompson View Drop Down
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Points: 5365 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Elliot Thompson Quote  Post ReplyReply Direct Link To This Post Posted: 11 July 2023 at 4:23pm
I cannot say I have heard of any CVR amplifiers offering any overheating issues. As for the Morin, the hottest I have ever encountered was 55 Degrees Celsius when I conducted the longevity test years ago. 

Had an outdoor event last week in which, I used the Morin for Bass to power two Double Eighteens. The amplifier remained 46 Degrees Celsius for 8 hours ( -5 dB from Clipping) under 87 degrees Fahrenheit weather with, 100% Humidity.  45 - 46 Degrees Celsius appears to be the standard on the Morin for the past 2 years this amplifier has been in usage.

Best Regards, 


Edited by Elliot Thompson - 11 July 2023 at 4:26pm
Elliot Thompson
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tehuti View Drop Down
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Points: 8 		Post Options Post Options   Thanks (0) Thanks(0)   Quote tehuti Quote  Post ReplyReply Direct Link To This Post Posted: 14 August 2023 at 5:59am
So whats the most solid looking build qualitywise of the various companies if they seem to be made in the same or similar factories?  
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Old Croc
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Joined: 29 December 2004
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Points: 3443 		Post Options Post Options   Thanks (0) Thanks(0)   Quote snowflake Quote  Post ReplyReply Direct Link To This Post Posted: 09 June 2024 at 11:05pm
Originally posted by hmaudio hmaudio wrote:

Yes the Dsp version does have external software, the external control interface is Rs485 and comes with a usb converter. The dsp version has limiters, cross over slopes, delay and will tell you voltage and current supplied by each channel. The front panel can also be locked from the software which disables the controls on the front. The amplifier has built in gates for all channels to stop backround noise.

I am currently in the process of trying to use a rs485 ethernet serial server which uses a virtual com port, not had chance to try it yet but i will let you know if it works. They also have aes digital audio in aswell as analogue audio.


just spent a while trying to use dsp software connecting D2004 amplifier and laptop to a router. This works for newer CVR amps but I think this one may have come with an USB adapter to connect laptop direct to amplifier. Think adapter may be lost - what would be a suitable replacement? Or should I be asking CVR to send the exact right one?

Did you ever get older amp to work another way without the adapter?

will this work?
https://www.ebay.co.uk/itm/176137768011

Edited by snowflake - 09 June 2024 at 11:47pm
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Earplug View Drop Down
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Joined: 03 January 2012
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Points: 7752 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Earplug Quote  Post ReplyReply Direct Link To This Post Posted: 10 June 2024 at 12:19pm
Originally posted by tehuti tehuti wrote:

So whats the most solid looking build qualitywise of the various companies if they seem to be made in the same or similar factories?  


I'd say that it is a bit of a lottery. Ya pay ya money & ya take ya chances...   Smile

BUT - the amps are cheap enough to buy a couple of spares just in case....   LOL LOL LOL LOL LOL
Earplugs Are For Wimps!
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