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Old 7th September 2010, 04:33 PM   #81
udailey is offline udailey  United States
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Sangram,
My friend has stereo Revel speakers with 2 subwoofers. Forget the subwoofer brand. Oh, yeah, Sunfire. I can guarantee you that subwoofers have a place in hifi. Its the 2nd or 3rd best system I ever heard.
Uriah
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purchase LDRs anytime Also try my Resistor Replacers or LDR based Input Selector Email me. diyldr@gmail.com
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Old 7th September 2010, 05:23 PM   #82
alkasar is offline alkasar  France
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Quote:
Originally Posted by hifimediy View Post
In my opinion, the cross talk is very weak and you can even ignore it.
for the sake of information, Troels Gravesen, well recognized in the speaker building community, has done some research on coils placement in crossovers. See this page including bottom comments. He indeed does not recomend this placement.

There is potentially cross talk, but neglictable. The proof is the great sound produced by this amp
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Old 7th September 2010, 06:13 PM   #83
sangram is online now sangram  India
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@Uriah - I'm pretty confident this kit is nowhere near Sunfire or REL level and quality of performance (no disrespect to the kit manufacturer!!!)

And at the $8000 for two REL subs plus speaker budget, I could arguably find a few combinations that would perform as well as the combination itself. Unless, of course, the room is extremely large and it cannot be pressurised properly without subwoofers!

Sorry once again for the OT posting!
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Old 7th September 2010, 06:19 PM   #84
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Quote:
Originally Posted by sangram View Post
Though you're some way along the development, I would put in another vote for a stereo setup instead of a 2.1. Most subwoofers already have a high level crossover which can be used with a stereo setup if required, and (IMHO) the use of a subwoofer in a stereo setup is in itself a compromise, being the domain of PC sound (rather than High fidelity reproduction) systems.
While most subwoofers have an internal low-pass crossover, only a few (more expensive) models also have high-passed outputs that can be connected to a set of main speakers. Most budget subwoofers lack these outputs, since their manufacturers assume you'll be using a DSP or a shelf amplifier to handle the crossover. So the 2.1 functionality is indeed important, particularly for the DIY crowd.
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Old 7th September 2010, 06:58 PM   #85
Cyan is offline Cyan  Italy
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Quote:
Originally Posted by SoldierAnt76 View Post
While most subwoofers have an internal low-pass crossover, only a few (more expensive) models also have high-passed outputs that can be connected to a set of main speakers. Most budget subwoofers lack these outputs, since their manufacturers assume you'll be using a DSP or a shelf amplifier to handle the crossover. So the 2.1 functionality is indeed important, particularly for the DIY crowd.
Quote, mine only has low pass crossover. So if only one kind of crossover can be set in the kit, i'd like it to be high pass.
There are only 2 kinds of crossovered subwoofers in the market: full crossover (both high pass and low pass), and only low pass.
The subwoofer is needed for many reason, but in my opinion the very first one is to reduce the HUGE distortion of the usual 5 or 6'' woofers of speakers. No high pass can still give all the other advantages, but doesn't have one of the most important features of subwoofers.
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Old 7th September 2010, 10:48 PM   #86
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So will this be audiophile level sound quality or is this more for PC gaming/home theater?
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Old 8th September 2010, 12:35 PM   #87
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Quote:
Originally Posted by sangram View Post
Though you're some way along the development, I would put in another vote for a stereo setup instead of a 2.1. Most subwoofers already have a high level crossover which can be used with a stereo setup if required, and (IMHO) the use of a subwoofer in a stereo setup is in itself a compromise, being the domain of PC sound (rather than High fidelity reproduction) systems.

And a 5.1, for the HT crowd I wonder how you'll get Dolby and DTS decoding into it....

On another note, when are the T3 boards without the power supplies expected to release? As of now the shop only has the single power supply and protection board as a bundle with the T3, but I may be using my own linear supplies - I already have too many transformers and capacitors Apologies for going off topic. I do want to explore Class T, after Class D was a wipeout for me
Hi, for 5.1 next product, will be Dolby and DTS, and I already do some work.
Please contact Nick for T3, I think your requirement will be fulfilled.
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Old 8th September 2010, 12:39 PM   #88
ptiJean is offline ptiJean  France
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Hey hifimediy : will it be Dolby and DTS high-def ? (DTS master audio & Co) or just old DD 5.1 ?
Thank you, can't wait !
Regards,
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Old 8th September 2010, 12:54 PM   #89
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Quote:
Originally Posted by alkasar View Post
for the sake of information, Troels Gravesen, well recognized in the speaker building community, has done some research on coils placement in crossovers. See this page including bottom comments. He indeed does not recomend this placement.

There is potentially cross talk, but neglictable. The proof is the great sound produced by this amp
I don't think we can make everything perfect, so some thing may be ignored when it only have very small effect.
For coils, big one (like mH in your link) and without core (like air coils) will have bad cross talk to each other. Large changing flux in the air lead to current on conductor near by... and so on. So if you take a look again at what will happen on our system, you can see that it just has very small effect and can be ignored. Similar placement can be found on some official reference board (RB-TK2050 for example).
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Old 8th September 2010, 12:57 PM   #90
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Quote:
Originally Posted by ptiJean View Post
Hey hifimediy : will it be Dolby and DTS high-def ? (DTS master audio & Co) or just old DD 5.1 ?
Thank you, can't wait !
Regards,
Will be old DD/DTS first, I just start with it so come with the simplest.
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