DSR1 low output gain

8-Channel Interactive Signal Processor w/ Integrated iDatalink Maestro Module
User avatar
Dara DeGrand
ADS Team
Posts: 6415
Joined: Mon Dec 02, 2013 1:34 pm

Re: DSR1 low output gain

Post by Dara DeGrand »

Yes, we're working on it.

A small favor- can you save your current DSP configuration as a preset in the perfect tune app and send the file to us at maestro.support@idatalink.com ? We'd love to see how you have it set up. That helps us build a case to fix the firmware.
Dara DeGrand
Maestro Technical Support Manager
Automotive Data Solutions Inc.
8400 Bougainville, QC
T 514.807.2888
TF 866.427.2999

krishelnino
New User
Posts: 11
Joined: Sun Sep 22, 2019 11:57 pm

Re: DSR1 low output gain

Post by krishelnino »

Dara DeGrand wrote:
Wed Sep 25, 2019 12:53 pm
Yes, we're working on it.

A small favor- can you save your current DSP configuration as a preset in the perfect tune app and send the file to us at maestro.support@idatalink.com ? We'd love to see how you have it set up. That helps us build a case to fix the firmware.
I emailed the preset file to the provided email address. Let me know if you need anything. Keep in mind that i haven't tuned the system yet so most of the settings are default.

The master slider volume is set at -6dB (default 0 dB). I've found that lowering it by that much removes most of the hissing noise, bad noise floor in the output signal. It's a balance between getting enough volume output and not having a bad hiss.

For reference i'm using the Audio Control LC 6.1200 amplifier with Focal 165 AS3 3-way component speakers (passive crossover) at the front and Focal 165 AC co-ax speakers at the rear. The subwoofer is JL 8w3v3

Let me know if you need anything else.

User avatar
Dara DeGrand
ADS Team
Posts: 6415
Joined: Mon Dec 02, 2013 1:34 pm

Re: DSR1 low output gain

Post by Dara DeGrand »

I got your file, thank you. We have updated the live firmware to allow you to set your input gain. If you would like to try this to fine-tune it and try to eliminate the hiss, it's up and ready to try.
Dara DeGrand
Maestro Technical Support Manager
Automotive Data Solutions Inc.
8400 Bougainville, QC
T 514.807.2888
TF 866.427.2999

krishelnino
New User
Posts: 11
Joined: Sun Sep 22, 2019 11:57 pm

Re: DSR1 low output gain

Post by krishelnino »

Dara,
I tried the new official Mustang Maestro firmware v1.6 that was posted. It's now giving me an option to select input sensitivity as either 3V, 3.5V, 4V (default), 4.5V, 5V when flashing the firmware using the Weblink tool. I flashed the firmware 3 times by selecting the input sensitivity option as 3V, 4V, 5V.

Even when selecting the different input sensitivity values when flashing, i couldn't notice any difference in the output gain volume or noise floor. It was the same and i was still having the noticeable hiss when volume is at level 0.

User avatar
Dara DeGrand
ADS Team
Posts: 6415
Joined: Mon Dec 02, 2013 1:34 pm

Re: DSR1 low output gain

Post by Dara DeGrand »

Where are your gains set on the amp?
Dara DeGrand
Maestro Technical Support Manager
Automotive Data Solutions Inc.
8400 Bougainville, QC
T 514.807.2888
TF 866.427.2999

krishelnino
New User
Posts: 11
Joined: Sun Sep 22, 2019 11:57 pm

Re: DSR1 low output gain

Post by krishelnino »

The gains are around 50-60 % of max.

Cathul
New User
Posts: 29
Joined: Sat Mar 30, 2019 9:55 am
Location: Germany

Re: DSR1 low output gain

Post by Cathul »

When resetting the input sensitivity on the DSP you also have to reset the gains on the amplifier. Always.

User avatar
Dara DeGrand
ADS Team
Posts: 6415
Joined: Mon Dec 02, 2013 1:34 pm

Re: DSR1 low output gain

Post by Dara DeGrand »

Give it one more re-flash. There was a problem with how the update was posted, but it should be good now.

And as Cathul mentioned, you would need to re-set your gains after updating to level match and that should help the floor noise.
Dara DeGrand
Maestro Technical Support Manager
Automotive Data Solutions Inc.
8400 Bougainville, QC
T 514.807.2888
TF 866.427.2999

Cathul
New User
Posts: 29
Joined: Sat Mar 30, 2019 9:55 am
Location: Germany

Re: DSR1 low output gain

Post by Cathul »

Any update on this @krishelnino?

ndinadis
New User
Posts: 11
Joined: Tue Apr 16, 2019 1:39 pm

Re: DSR1 low output gain

Post by ndinadis »

I have loaded 1.6 and notice that the default is quite a bit higher gain then before.
I turned the gains on my amps way down (minimum) and its still louder then before.
For the first time I now also have some hiss (not ground loop noise there is no alternator hum etc) just the noise floor is too high. I want to try flashing at 4.5 or 5v to see if that reduces it

ndinadis
New User
Posts: 11
Joined: Tue Apr 16, 2019 1:39 pm

Re: DSR1 low output gain

Post by ndinadis »

I re flashed as posted in the other thread under 2019 mustang, I decided to try the 4.5V setting, its better there is a touch of noise but better, its still quite loud and I think I may try the next higher next time.
These new settings have it where my max listen volume is at ~12 out of (30 I think) on 1.5 I was around 22
I cant imagine turning it all the way up (and again gains are set at minimum)

Cathul
New User
Posts: 29
Joined: Sat Mar 30, 2019 9:55 am
Location: Germany

Re: DSR1 low output gain

Post by Cathul »

Just remember to set gains of the amplifiers with all speakers disconnected, the headunits volume at 30 and all output gains at max in the DSR1. From there tune the DSR1 to your liking (TA, Crossovers, EQ, Levelmatching drivers et. al.).

Cathul
New User
Posts: 29
Joined: Sat Mar 30, 2019 9:55 am
Location: Germany

Re: DSR1 low output gain

Post by Cathul »

Have now updated my DSR1 as well and set the sensitivity to 4V to match the output of the ACM in the Mustang. Holy Moly. Could raise the gain about 1/5 until my amp showed clipping with a 0db 1khz test tone whereas before I could raise the gain all the way up without any clipping. Now it‘s plenty loud with a much lower noise floor.

Post Reply

Return to “Maestro DSR1”