If I continue to use either a TPA3116 or TD7492 class D amp powered by a 19v laptop brick, full power would probably be 17 volts peak (90% of 19v). Is 17v going to make the voicecoil hit the magnet back plate or fly out onto the floor? My "protection" is to use a small amp. If I ever switch to the 200w IRS2092 with +/-38v, well that is a different matter but not sure I would need any of that power reserve. A HPF definitely makes sense there.
Ok, whatever you say. I just said you probably weren't going bottom the driver easily, so I don't know why you're acting like I'm saying otherwise
I'm only trying to help by giving you the facts, at least according to simulation, instead of guessing and acting all giddy every time the sound changes. I'm no expert, but I'm not exactly full of s**t either, but I won't bother anymore, you have the capability to do it yourself if you're so inclined
Btw, it's also poor practice to use an underpowered amp as over excursion protection. Clipping is potentially more harmful than too much power
Satx,
Hope you didn't take it the wrong way. I appreciate all your help and guidance. I never thought you were anything but knowledgable and helpful. I was only saying that my protection was an underpowered amp. I can see that as potentially having clipping issues but there should not be any dangers with regard to damage of amp there as the class D amps are smart and basically bulletproof to clipping, overload, shorting output, etc. they self protect with soft shut down.
Please don't take offense - keep doing what you do. Thanks.
X
Hope you didn't take it the wrong way. I appreciate all your help and guidance. I never thought you were anything but knowledgable and helpful. I was only saying that my protection was an underpowered amp. I can see that as potentially having clipping issues but there should not be any dangers with regard to damage of amp there as the class D amps are smart and basically bulletproof to clipping, overload, shorting output, etc. they self protect with soft shut down.
Please don't take offense - keep doing what you do. Thanks.
X
in my amp pile is an xls2000 - decent sound and reliability - - X, when measuring response are you doing it at the loudspeaker input terminals or with a non-inductive dummy load? I've seen response with classic global feedback tube amps 'move' a dB or two on the top octave and assume some digital amps vary on the top too as load conditions change. The little assembled Breeze TPA3116 are nice size as could be carried in one pocket and the 19v laptop brick in the other. 100-200W per channel would be cool. 400W would be nice for a single channel instrument amp.
I use dummy load to measure rms voltage and note the input setting from REW for the excitation. Then put speaker load on and measure. Another way is to run sine wave at freq far from fs or peaks due to cabinet and measure at speaker terminals. I get same voltage as the dummy load.
thanks - - how long til your 200W modules arrive? - have you gathered the power supply stuff yet for those ? for a drum machine driving a K10 or 12, I'd like 100-200w - ideally in a tough case - have you seen that module sold in an enclosure?
Probably another week before it gets here from China. Can't complain given free shipping. I plan to use four laptop bricks in series and tying the mid point to ground to get dual rail 38v. I need a real speaker as my little 8in Dayton can't handle that kind of power.
I haven't seen these in boxes as a DIY. I think class D pro amps like XLS1000 etc might use something similar. It's very scalable - same thing with higher voltage rated mosfets can do 2000 watts.
I haven't seen these in boxes as a DIY. I think class D pro amps like XLS1000 etc might use something similar. It's very scalable - same thing with higher voltage rated mosfets can do 2000 watts.
$229 is a decent amount of $ but probably good value with the xls1000 as there's a sturdy case, binding posts, x-over, and warranty Crown XLS 1000 Power Amplifier, 1000 Watts, New
FAST does belong in the full range forum if you ask the Mods. Keep the XO below 600Hz or so and it qualifies 🙂
Don't forget the xo. It's a nice feature to have.
The behringer inuke series aren't as sturdy, but they're about $100 cheaper and they have a pretty decent dsp interface.
I think he might be talking about all the amp talk. But if that's the case, I don't see the issue with people talking about what they use to drive their full range speakers.
Freddi, you might try these guys- unique_squared_inc on eBay
I think they're a brick and mortar in Atlanta
I bought an Inuke3000dsp from them for an amazing price. It was new in perfect condition, fast shipping and they're an authorized retailer. I don't know if they carry crown or not, but it'd be worth a look. If you buy from them, be sure to make an offer, I offered about $50 under the sale price and they took it.
Edit: I just took a quick look and they have the XLS1500 for $245 with free shipping. That's $5 less than I paid used and 150 less than most places. So apparently they do carry crown. That XLS has a make an offer option so you could probably go a few bucks less yet
I think they're a brick and mortar in Atlanta
I bought an Inuke3000dsp from them for an amazing price. It was new in perfect condition, fast shipping and they're an authorized retailer. I don't know if they carry crown or not, but it'd be worth a look. If you buy from them, be sure to make an offer, I offered about $50 under the sale price and they took it.
Edit: I just took a quick look and they have the XLS1500 for $245 with free shipping. That's $5 less than I paid used and 150 less than most places. So apparently they do carry crown. That XLS has a make an offer option so you could probably go a few bucks less yet
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"ahhhhh...." (kinda 'siiiiggghhhh')
freddy you danged-instigator!
good to see you pushing bits out there ya freakin' codger : ) <-- there's a joke about that -- i've sat on the barstool next to his Every Day for 45 years and watched him throw-away his life...
: )
well, i haven't but it seems like it for piles of us.
soooo...well, you gotta admit that that dual-18-sigmas-per-side-rig was maybe sweet and some fine diy-er-madness... could be Really sweet with that OB rig. heck 1X Hz F3 has my attention anytime.
and yet, kinda nothing (nobody's designs) is okay running at max-freddy-envelope (lol?).
that's one of the many gifts that you've given me. "always check for freddy spl and f3 combinations". "check".
you madman : ) no-fair : )
i thank you for your contagious experimentation and enthusiasm. for freaking ever, amongst us "old'uns", at least.
every-undefined-experimental-audio-place i've been, i find some amount of "freddy tracks" : ) <-- complimentary, or at-least, that was the intent.
hmmm--given a chance to focus, well--freddy--you've encouraged more experimentation and open-minded apprehension of objective assessments than-about anyone i can recall off of the web for decades. okay, yeah, add an indictment for bianchini...
carry-on : )
Behold, the power... compact 200 watt monoblocks
Although Satx's calcs show I don't need more than 30 watts to hit xmax with my woofers, I had these on the way.
Aliexpress comes through again with another bargain. This amp PCB looks extremely well-built with quality soldering and construction and nice parts. I hooked it up with my quad 19v smps bricks in series for a +/-38v power supply with the center tap for ground. I hooked it up to some PA drivers that can handle to power and tested it. Man, is it LOUD, and very clean. I used a Beta 12CX for the woofer and a PRV 5MR450NDY as the tweeter, both can handle more than 200 watts so I wasn't worried about blowing them out. I could not handle the sound levels above 1 o'clock setting unless I got earplugs.
Anyhow, they are wired up and ready for my next big project. Definitely worth $19ea.
Although Satx's calcs show I don't need more than 30 watts to hit xmax with my woofers, I had these on the way.
Aliexpress comes through again with another bargain. This amp PCB looks extremely well-built with quality soldering and construction and nice parts. I hooked it up with my quad 19v smps bricks in series for a +/-38v power supply with the center tap for ground. I hooked it up to some PA drivers that can handle to power and tested it. Man, is it LOUD, and very clean. I used a Beta 12CX for the woofer and a PRV 5MR450NDY as the tweeter, both can handle more than 200 watts so I wasn't worried about blowing them out. I could not handle the sound levels above 1 o'clock setting unless I got earplugs.
Anyhow, they are wired up and ready for my next big project. Definitely worth $19ea.
Attachments
Looks like I need one of these bad boys for the PS - kind of pricey, does anyone have suggestion for lower cost 400 watt alternative?
Connexelectronic
$69 + $38 for the amps = $107 for 2ch x 200w, is that a good price?
Connexelectronic
$69 + $38 for the amps = $107 for 2ch x 200w, is that a good price?
Of course the sims aren't dealing with music power, so I'm sure they can handle more power than 30W.
How fast are you getting your stuff from Aliexpress? I'm thinking of ordering a little amp with bluetooth for a bluetooth speaker
$107 sounds really cheap to me, so I'd say it's a good price. There's also Mean Well, sometimes they're a little cheaper
How fast are you getting your stuff from Aliexpress? I'm thinking of ordering a little amp with bluetooth for a bluetooth speaker
$107 sounds really cheap to me, so I'd say it's a good price. There's also Mean Well, sometimes they're a little cheaper