I can't agree with you on passive speaker crossovers. If that's what you're using (and you know how to do them right) then there are other things I'd look at first.
I agree on the digital source. I had some bad early experiences with mp3s which looking back were probably very low B/R. I'm not saying that analogue sources don't have their charm (and I still highly regard them) but I can enjoy listening to a (good) mp3. The differences in mastering quality and all that led up to that point in a recording can seem greater than the apparent dryness etc that an mp3 can impart, but if I feel like drumming to it then I can be happy.
I agree on the digital source. I had some bad early experiences with mp3s which looking back were probably very low B/R. I'm not saying that analogue sources don't have their charm (and I still highly regard them) but I can enjoy listening to a (good) mp3. The differences in mastering quality and all that led up to that point in a recording can seem greater than the apparent dryness etc that an mp3 can impart, but if I feel like drumming to it then I can be happy.
Yea I am looking forward to my SE amps looking at a vc direct. Thats why I always appreciated full range. Digital keeps that intimate relationship with multi way. Dam I cant do without analogue any longer I sold my tt and 12inch sme in a dull audio period. I am building a analogue mono system again. vintage alnico multi cell horn based just for flamenco guitar and gospel records but that off topic lol
I know the sound you're seeking, wish it wasn't off topic here, I still use passive crossovers in some places.
Hey Guys, don't want to be rude but please let's try to keep this thread on the technical questions about the miniDSP kits.. It will help future readers.
Topics like Austar/passive crossover or unrelated chitchat can be fitted in a different section of DIY audio.. plenty of space out there.
Thanks for your understanding,
DevTeam
Topics like Austar/passive crossover or unrelated chitchat can be fitted in a different section of DIY audio.. plenty of space out there.
Thanks for your understanding,
DevTeam
Glad to hear that you're a happy customers with our products!
Both request seems quite valid to us and could indeed be implemented in future revisions...
Looking forward to seeing your future work!
Great... I look forward to the upgrade as it will help me with my creations..
And once I get this major project for a mfg past me, I'll finally have time to build for my clients and order some more dsp goodness
Finally got the balanced miniDSP working but now the output level is not being shown but the amps lights are blinking and there is plenty of bass. It worked before with the unbalanced miniDSPs. Is this a known bug with the balanced miniDSP? I liked keeping an eye on that graph when in use and it hardly ever moves.
I've checked all mute controls as well as levels. The sub is putting out quite a bit but nothing shows on either the input or output meters.
I've checked all mute controls as well as levels. The sub is putting out quite a bit but nothing shows on either the input or output meters.
The level meters of the Advanced Two Way miniDSP software doesn't work with either my subs balanced miniDSP or the center channel's unbalanced miniDSP. This started as far as I can tell when I first hooked up the balanced miniDSP but could have been slightly before that. I've reinstalled the required software, .NET etc., and even my graphic's card's driver with no sign of what the problem might be even in the system logs.
I can live without the meters, they never came within 40db of clipping anyway but this is a mystery I feel compelled to solve.
I can live without the meters, they never came within 40db of clipping anyway but this is a mystery I feel compelled to solve.
Hissing Noise In System
My MiniDSP setup is injecting a hissing noise into the system & I have no been able to work out what is causing it. I have tried it with my 2 amps & it is the same with both. I don't think it was there (cant be sure) when I was running 2xDSP 2xDigi, Now I am running 2xDSP 1xDigi.
My main (Coldamp) volume control is after the RCA inputs to the amp & before the amp modules with the Coldamp. I have it set so that I am using the last 30% of the Squeezebox volume for adjustment.
When I use the Integra Receiver as the amp, the Squeezebox it set on 100% volume & I use the Receiver volume for adjustment.
Both amps product the same hiss, except the Receiver is worse.
The DSP's channel Inputs are set with no attenuation & the DSP outputs are set to level the driver but have very little attenuation overall. So If I understand Gain Structure correctly, that shouldn't be a problem. I'm definitely not the only one that has this issue as I have read about numerous similar problems in the MiniDSP forum, I am also aware it is not a global problem
I normally run it off a 12V External Hard drive PSU, But have tried it with my 12V Kingrex Linear PSU and the noise is the same.
I have tried pulling it out of the case, triple stacked it as per instructions, shortened the link cables, & mounted it on a piece of wood as it was in the 2xDSP & 2xDigi setup.
Nothing has worked, can anyone help?
My MiniDSP setup is injecting a hissing noise into the system & I have no been able to work out what is causing it. I have tried it with my 2 amps & it is the same with both. I don't think it was there (cant be sure) when I was running 2xDSP 2xDigi, Now I am running 2xDSP 1xDigi.
My main (Coldamp) volume control is after the RCA inputs to the amp & before the amp modules with the Coldamp. I have it set so that I am using the last 30% of the Squeezebox volume for adjustment.
When I use the Integra Receiver as the amp, the Squeezebox it set on 100% volume & I use the Receiver volume for adjustment.
Both amps product the same hiss, except the Receiver is worse.
The DSP's channel Inputs are set with no attenuation & the DSP outputs are set to level the driver but have very little attenuation overall. So If I understand Gain Structure correctly, that shouldn't be a problem. I'm definitely not the only one that has this issue as I have read about numerous similar problems in the MiniDSP forum, I am also aware it is not a global problem
I normally run it off a 12V External Hard drive PSU, But have tried it with my 12V Kingrex Linear PSU and the noise is the same.
I have tried pulling it out of the case, triple stacked it as per instructions, shortened the link cables, & mounted it on a piece of wood as it was in the 2xDSP & 2xDigi setup.
Nothing has worked, can anyone help?
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I had similar issue when I first tried to introduce one miniDIGI and it appeared to be due to the plug-in installation process.
Have a look at miniDSP forum but in few words, I didn't follow ALL the steps described in the installation guide. In fact I forgot only one that was to reset configuration before installing plug-in again.
Hope this helps.
Have a look at miniDSP forum but in few words, I didn't follow ALL the steps described in the installation guide. In fact I forgot only one
that was to reset configuration before installing plug-in again.Hope this helps.
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I had similar issue when I first tried to introduce one miniDIGI and it appeared to be due to the plug-in installation process.
Have a look at miniDSP forum but in few words, I didn't follow ALL the steps described in the installation guide. In fact I forgot only one
Hope this helps.
My setup plays music ok, I think I have done the setup right, after a few tries
Matt
Thanks for the input, I think reducing the output -20 db is just masking the problem that still really exists, I need to go & reread the gain structure artical in this website to check I am doing it the right way.
I have tried a well built linear PSU but it didn't make any difference & as you say I think I have the RFI under control.
Thanks
David
So whats the issue? Do we need a tissue?
I am still collecting parts for my multi amp horn system. I have been sitting back and following the development. Which is fortunate because they have now made a more suitable unit for me for 300$. But if its going to be a hissy piece of crap that is unfixable I need to know. So I have a vested interest in fixing this issue.
What I have been experimenting with is tripaths for bass channels. These have a rep as having similar issues. This mainly comes out of the fact they have got huge bandwidth and pick up RF on the input or cabling or I suspect thats the issue. And of course the power supply can be a input too. Now with the first tripath I built from a board. I used sealed lead acid battery for power supply as I intend to do with the crossover. And drove it directly into the input with one of my preamps. which was 600ohm impedance and a dcr to ground of maybe 30ohms. This amp was dead quiet and a real pleasant surprise sonically.
So is this what where dealing with here? Dirty supply's and highimpeadance inputs?
I am guessing these will need nice copper or mu metal cases. Forget switchers unless there hiend. Even a cheap toroidal supply will pass a lot of RF.
Input may have to be well loaded close to ground. Unused digital inputs may have to be terminated if not in use.
Is this any help? I would like to know if after I buy and set it up right that it going to be quiet. This is how I will set one up. It will be trans coupled and battery supplyed so it will be completely isolated.
Good luck guys I especially would like to hear about the new 8 way. Hell I am even thinking about using one of these on my mums new set up I am building her.
I am still collecting parts for my multi amp horn system. I have been sitting back and following the development. Which is fortunate because they have now made a more suitable unit for me for 300$. But if its going to be a hissy piece of crap that is unfixable I need to know. So I have a vested interest in fixing this issue.
What I have been experimenting with is tripaths for bass channels. These have a rep as having similar issues. This mainly comes out of the fact they have got huge bandwidth and pick up RF on the input or cabling or I suspect thats the issue. And of course the power supply can be a input too. Now with the first tripath I built from a board. I used sealed lead acid battery for power supply as I intend to do with the crossover. And drove it directly into the input with one of my preamps. which was 600ohm impedance and a dcr to ground of maybe 30ohms. This amp was dead quiet and a real pleasant surprise sonically.
So is this what where dealing with here? Dirty supply's and highimpeadance inputs?
I am guessing these will need nice copper or mu metal cases. Forget switchers unless there hiend. Even a cheap toroidal supply will pass a lot of RF.
Input may have to be well loaded close to ground. Unused digital inputs may have to be terminated if not in use.
Is this any help? I would like to know if after I buy and set it up right that it going to be quiet. This is how I will set one up. It will be trans coupled and battery supplyed so it will be completely isolated.
Good luck guys I especially would like to hear about the new 8 way. Hell I am even thinking about using one of these on my mums new set up I am building her.
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Some ideas
Gday You want to think about shielded power supple cables. And perhaps a cmc or 2 in there. What earthing are you using? Rf can get in that way too. What input impedance are you using? Perhaps you can put a 600 ohm resister in there if you driving with op amps or buy some trans.
Gday You want to think about shielded power supple cables. And perhaps a cmc or 2 in there. What earthing are you using? Rf can get in that way too. What input impedance are you using? Perhaps you can put a 600 ohm resister in there if you driving with op amps or buy some trans.
I'm working on a Power Board with filtering.
There are plenty of people who don't have my problem, I'm not sure if its the configuration I am using. I'll build the filter & then see how I go.
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