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Gridmon

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About Gridmon

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    WA
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    Far far away
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    Andy

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  1. Gridmon

    One sub or two.

    Oh noooo. Both my new subs come with builtin DSPs and have fancy apps to use. How can I throw that **** out and still have some bottom end for my LS50s?
  2. Gridmon

    One sub or two.

    Well I think you have gone a fair way to providing your own proof about low frequencies interacting with the room. As mentioned the dual subs + positioning + eq (ie tweaking the signal with a DSP eg the one in your amp and/or others) is all about trying to get the best most realistic reproduction in your environment. You would be lucky indeed if one sub in your room is all that’s needed. My Umik mic just arrived. Looking forward to measuring my room and seeing what it does. It’s apretty awful room with only one solid wall to hang tv on, 2 others are floor to ceiling glass and last one is half open to kitchen (half height partition), floor is all hard surface too (wood) and ceiling is glass in a pyramid shape.
  3. Gridmon

    One sub or two.

    PS if you’re a surfer then you will probably have seen places with a big back wash then can double your wave, and or experience another wave sucking out your wave.
  4. Gridmon

    One sub or two.

    Low frequencies are much more likely to create standing waves in typical sized rooms - 20hz sound wave is 17m long where as 20khz is only 17mm. So when the sound is reflected off walls and comes back to hit you again you could end up with negative part of a low frequency wave hitting you a fraction after the original wave and nearly cancelling it out. Or depending on the travelled path you could have a peak on a peak and nearly double it (the reflection will have less amplitude from distance and diffusion). If you play some low frequencies test tones and move around the room you should be able to confirm this yourself. Or better still get some good acoustic measurement software like REW (free) and a suitable calibrated Omni mic and you can quantify it across freq range and listening positions and with different sub placement. Hence I’ve just ordered a pair of subs (my first) to go with my switch to bookshelf speakers. This isn’t to make more bass impact but to even out low frequencies and try my best to get good tight bass where I need it. Will also be using DSPs, experimentation with positioning, maybe some treatments depending on how it goes.
  5. I like this idea... Seeing as were on the run, I’ll opt for these from my local store: LS50 wireless https://addictedtoaudio.com.au/collections/speakers/products/kef-ls50-wireless-bookshelf-speakers $2789 KEF Stands https://addictedtoaudio.com.au/collections/speakers/products/kef-performance-speaker-stands $600 Both are on special - so I’m saving the rest of you taxpayers some dollars. However, I did by my LS50’s from A2A, and those kef stands. So that might make me traceable. So, I’ll head to the store the other side of me and get: Elan debut b6 https://www.douglashifi.com.au/products/debut-b6-bookshelf-speakers-ex-floor-stock-to-clear-be-quick $500 Rotel ra1570 https://www.douglashifi.com.au/collections/integrated-amplifier/products/rotel-ra1570 $2090 I’d feed them both from stored FLAC’s so my location couldn’t be traced, and so the backup hard disk could live in the ‘go bag’.
  6. Gridmon

    NAD D3020 vs AV Receiver

    Yay, SVS Subs and AVR finally came in yesterday and shipped out this morning. Can hardly sit still waiting for 'em. Have been trying to find some reviews for the SB-3000's but still surprisingly little published so far.
  7. Gridmon

    NAD D3020 vs AV Receiver

    Ordered 'em Cheers @Snoopy8
  8. Gridmon

    NAD D3020 vs AV Receiver

    OK. Dont have either, so I can order them. But I thought the T758v3 came with a calibrated mic? Here's the reference on their website "supplied calibrated microphone" - https://nadelectronics.com/product/t-758-v3-av-surround-sound-receiver/
  9. Gridmon

    NAD D3020 vs AV Receiver

    Sorry OP - feel like I'm hijacking your thread here with my purchase. Are you going to try an AV with pre-outs, so you can use your D3020? I did have another thought for your AV options, there might be some older stock around like a Marantz SR5012 or someone trading it in. This model comes with the better Audyssey MultEQ XT. Either that or the XT32 version can be customised with an iOS App. Pretty sure it's free! If you look at it in the app store - it should have all the compatible models.
  10. Gridmon

    NAD D3020 vs AV Receiver

    Now begins the tortuous wait for things to ship across the nullabor. @Snoopy8 Anything I should do to prepare - buy a mic stand etc?
  11. Gridmon

    NAD D3020 vs AV Receiver

    Purchased! (Whilst waiting for sashimi)
  12. Gridmon

    NAD D3020 vs AV Receiver

    Doing it now... ordered the pair of SB-3000’s off em last week.
  13. Gridmon

    NAD D3020 vs AV Receiver

    Oh no Snoopy, your about to cost me some money. Lost sleep thinking the I should get the T758v3 instead of MRX 520. Unfortunately I dont think there is anyone in Perth who has them, and I've never heard one.
  14. Gridmon

    NAD D3020 vs AV Receiver

    I think jventer described it well - you need an AV that has pre-outs (at least for front L/R). These will become line level inputs to your d3020 like any other source CD etc. The things that will make it interesting are: 1) You'll need to always switch on the 3020 amp when using the AVR - NP for you, but you need to train others (WAF). There are solutions to this - some AV have a trigger out that you can connect to trigger in on your d3020? My old AV had mains out that it switch on, you can buy 3rd party power switching devices, program a universal remote like Harmon, etc. 2) Probably more important... If you decide to also hook certain stereo sources directly to your d3020 amp - because the signal path is more direct, AV doesnt have streaming, or its a phono or whatever. Then the volume management issue will be more important. I dont know if the d3020 has a power amp mode where the input is expected to be coming from a pre and the volume managed on the pre. But even if it doesn't, it's no big problem to pick a fixed volume position (LOUD) on it and have the AV do it's calibrate to get the sound levels right between the speakers it powers directly through onboard amps and the front 2 that it will rely on your d3020 to power. BUTT (its a big but hence the double T and shouting), if you then switch d3020 source to CD and your amp assumes all sources have same line levels (again dont know if thats the case for your d3020) it could be a rude shock and a bit unkind to all concerned AMP, Speakers, and catalyticly damaged wet wear in the vicinity. Other than the caveat's above, it's an attractive option for making the most out of different bits of gear and probably a way to get more bang for your buck (I mean the nice kind not the blown kind. Ah, you not what I mean). The high end AV are a big investment, and the technology is changing fast.
  15. Gridmon

    NAD D3020 vs AV Receiver

    I’m grinning as I read this because despite the adverserial nature’s of the comments, you seem to reinforce each other’s points. The rotel looks to be really nice amp, with reviews knocking it for room correction software. Putting it at odds with the vast majority of cheaper AVRs that save money on amp section but have all bells and whistles and Bass management as per OP’s question. It was a good question, to which I could add to more options, making it - do you: a) replace NAD 3020 with moderate AV b) use nad with HT bypass and moderate AV c) buy whizz bang super expensive AVR that has great correction features and capable amps. d) exotic solutions eg miniDSP for bass management, or seperate processor and amp. I’m hoping something like the NAD 758v3 or an Anthem MRX 520 would provide me with a good enough amp for 2ch duties. But I really won’t know till I try em on my speakers in my home (which is all about to change with a reno anyway). At least those 2 aren’t too expensive that I wouldn’t be put off buying an external amp, YMMV.
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