My 10W Mono Single-Ended modules - D10.1

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#141
Brian,

I received the box of components first thing this morning,thanks very much.

I must say your D10.1 (pictured) does look very interesting - any reviews anywhere ?

BWRX10-1.jpg


BWRXD10-1.jpg
 
#142
Hi Danny. Thanks for letting me know you got the parts. I didn't think you'd get them until Friday at the earliest. The US postal service has actually been pretty good with shipments lately 😉

Mike posted his short and sweet review on the previous page, and I think I posted some thoughts on them back near the beginning of the thread. One other person has an old kit (as shown in the above pictures) but hasn't built it yet (that I know of). Once these latest kits go out and get built you'll hopefully see some more listening impressions. The boards are supposed to be delivered today but no one will be home to sign for them so I won't get them until tomorrow 🙁
 
#144
I stayed up way later than I should have to get these built, so you're getting some pictures because I don't want to be tired tomorrow at work for nothing!

Here are the first two D10.1s to be built. I'll test them in the evening tonight after work and if they work, will collect payment and ship out the kits next week.
 

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#146
I got to give them some quality playing time and if they sound this good not broken in then they're good to go! I probably said this before but the quality of the bass is very good, and the top end is not bright or lacking in any way on either pair of 8 ohm 2 ways I've auditioned them on. Full range drivers with a rising impedance may cause the frequency response to rise a little bit, but that's no biggie for most people because full range drivers often lack that top end sparkle anyway.

Honestly, these latest boards are a little bit better than the previous version. For a small to medium room with sensitive speakers 7-13W is plenty to get to adequate volume levels unless you really like it loud. For that I'm working on seeing how bridged stereo modules sound 🙂 The old modules sounded just as good when bridged so I would expect the new ones to sound equally good, only with about twice as much power into 8 ohms. 14W should rock the Klipsch 2 ways downstairs quite nicely.

It may also be possible to parallel these modules for more current into 4 ohm loads, but I need to think about that a little more before going ahead and ruining a bunch of chips.
 
#150
Jason, depending on your room size they're fine for use at normal to moderate listening levels with speakers that sensitive. 7Wrms max into 8 ohms (the max power rating of these modules) doesn't seem like a lot but it's enough to reproduce some very tough organ music (Bach's Toccata and Fugue) at more than adequate levels for most people (excluding punk rockers and deaf people).

Tom, no coupling cap is indeed advantageous. You can still add one if you prefer the slight coloration it adds or want that DC offset peace of mind, but it may add a pop on start up or shutdown like with the Tripath modules. I haven't used one and don't plan to. The output filter cap is a 5mm lead spacing 5% MKT (metallized polyester film).

Mike, thanks 🙂

I hope to have another pair finished off by Sunday so I can test out a bridged stereo pair.

P.S. I'll be away today so I don't get back to you it's because I'll be up at Penn State getting rained on at the football game 🙂
 
#153
Thanks guys.

Don't let the size fool you. These little modules aren't just for a second cheaper bedroom or ambiance audio system (although they'd work just fine for that sort of application). They will rock your speakers if they're sensitive enough.

I was blasting music by Orgy, Linkin Park, Kid Rock, and Eminem earlier and you would not have believed that these little modules were driving the speakers if you were brought into the room blindfolded. I was shocked and I knew exactly what was going on! 😎

RX5 - Thanks for posting all the info about your DIY class d amp in your thread. It's a very interesting read! 🙂
 
#154
Hello BWRX,

never said anything about "cheapness" 😀 I know they sound GOOD...

hehehe :smash: I was indeed looking/planning to make a 10-20W D-amp for room... I know its more than enough... esp the size of it(board)

BUT.... I also know I have to order those chips abroad... :cannotbe:

practicality, use what is locally available.... whew

BUT I do wish I had one ..... love to put it in my room :smash:


regards,
Raff
 
#155
BWRX said:
Thanks guys.

Don't let the size fool you. These little modules aren't just for a second cheaper bedroom or ambiance audio system (although they'd work just fine for that sort of application). They will rock your speakers if they're sensitive enough.

I was blasting music by Orgy, Linkin Park, Kid Rock, and Eminem earlier and you would not have believed that these little modules were driving the speakers if you were brought into the room blindfolded. I was shocked and I knew exactly what was going on! 😎
Click to expand...


I think I'm the only other person to have built the first version so far.. and I can agree with him on all points!
 
#158
I'm waiting to get feedback from you guys to see if it would be possible to make any further improvements before going any further. As it stands, I'd really want to do a small production run, but it would be easier for me to foot the bill if I knew more people were interested in these modules. Plus, I obviously think they sound fantastic, but that's just my opinion. I'd like to hear what you guys think of them as well, as I value the opinion of my fellow audio enthusiasts.
 
#160
Hi Chris. I sent you an email asking if you'd like the one kit I have left since someone backed out at the last minute. If you'd like it please send me an email through the forum. If Chris doesn't want it then it's up for grabs.

To everyone who has a kit on the way - I just sent each of you emails containing documentation that will help with assembly.
 
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