Hi all
I have been sitting on some ATC SCM150 drivers for years and finally decided to put them together.
Built a cabinet and baffle.
I want to tri amp them with active crossover not use them with passive crossovers.Something similar to the ATC actives but I don't have the budget to go Bryston, Naim, Krell or ATC originals.
The actives power amp specs are
Treble 50 Watts RMS
MID 100 watts RMS
Bass 200 Watts RMS
My friend has some SCM100ASLs. I had a look at the amp packs - they don't look that special.
What would you guys recommend for tri-amping? I can DIY as well. I haven't found many kits/pcbs that can put 200 W RMS into 8 ohms. Apparently the originals are Class A for 2/3 of output power. Is there anything out there for DIY? Or a sleeper amp that I can use or modify that has a similar spec?
I have heard that people biamp or tri-amp with HH mosfet amps or Crowns with very good results.
As for active crossovers the originals are 4th order Linkwitz Riley. What do people recommend for kits? Also originals have Phase correction on them as well. Are there any DIY designs that include this?
A bit hard on a paltry budget but I can build it up slowly.
I have been sitting on some ATC SCM150 drivers for years and finally decided to put them together.
Built a cabinet and baffle.
I want to tri amp them with active crossover not use them with passive crossovers.Something similar to the ATC actives but I don't have the budget to go Bryston, Naim, Krell or ATC originals.
The actives power amp specs are
Treble 50 Watts RMS
MID 100 watts RMS
Bass 200 Watts RMS
My friend has some SCM100ASLs. I had a look at the amp packs - they don't look that special.
What would you guys recommend for tri-amping? I can DIY as well. I haven't found many kits/pcbs that can put 200 W RMS into 8 ohms. Apparently the originals are Class A for 2/3 of output power. Is there anything out there for DIY? Or a sleeper amp that I can use or modify that has a similar spec?
I have heard that people biamp or tri-amp with HH mosfet amps or Crowns with very good results.
As for active crossovers the originals are 4th order Linkwitz Riley. What do people recommend for kits? Also originals have Phase correction on them as well. Are there any DIY designs that include this?
A bit hard on a paltry budget but I can build it up slowly.
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There's a misleading title. I thought you were going to show us how to make our own 3in sm75-150 soft dome mid from a pro woofer driver voice coil and motor🙂
The amps are easy. Go class D and don't look back. Very efficient, lightweight, low HD, and cheap.
For your higher power requirements you need an IRS2092 based amp capable of 200w. Those are $20 ea without power supply. The dual rail 52v SMPS will run you either $20 if you can still get the buyout Abletecs or you will need to spend $60 on a SMPS capable of the voltage rails and current. For the tweeter, the TPA3116D2 is probably enough at 40 watts.
The amps are easy. Go class D and don't look back. Very efficient, lightweight, low HD, and cheap.
For your higher power requirements you need an IRS2092 based amp capable of 200w. Those are $20 ea without power supply. The dual rail 52v SMPS will run you either $20 if you can still get the buyout Abletecs or you will need to spend $60 on a SMPS capable of the voltage rails and current. For the tweeter, the TPA3116D2 is probably enough at 40 watts.
If you already got the drivers chances are that your 3" dome is a 16Ω unit while the woofer should be 8. This means that if you want to stick to your power the mids will need the same amp as the woofer.
If you don't fancy Class D Nelson Pass may have some suitable Class AB projects.
Not sure because building amps is beyond my very limited soldering abilities. ;-)
If you don't fancy Class D Nelson Pass may have some suitable Class AB projects.
Not sure because building amps is beyond my very limited soldering abilities. ;-)
Thanks guys
yes I'm pretty sure the mid is 16 ohm - I'll check
Are you talking any generic manufacturer like the ones listed on Ebay from CN or HK or do you mean Connex or some other brand? Is there any real difference between them? What about Hypex? I think Hypex only sell modules not kits right?
As for the original AmpPacks - run class A for 2/3 output power. Is there anything similar in the DIY world. I guess even DIY this will be a much more expensive adventure than Class D? Looks like they only have one transformer - is that 3 different windings and 3 different PSUs? or just one PSU for all 3 amp modules?
yes I'm pretty sure the mid is 16 ohm - I'll check
Are you talking any generic manufacturer like the ones listed on Ebay from CN or HK or do you mean Connex or some other brand? Is there any real difference between them? What about Hypex? I think Hypex only sell modules not kits right?
As for the original AmpPacks - run class A for 2/3 output power. Is there anything similar in the DIY world. I guess even DIY this will be a much more expensive adventure than Class D? Looks like they only have one transformer - is that 3 different windings and 3 different PSUs? or just one PSU for all 3 amp modules?
I have only tried the generic Chinese IRS2092. But if you want more Provenance the ones built by LJM for double the price seem highly regarded (still Chinese he just happens to be a diya member and manufacturer). Connextronic SMPS are what I was referring to for the dual rail SMPS.
I built something not too different (using Volt Radial, PMC mid dome, and Scanspeak revelators) in a bass reflex design. I used a Behringer active crossover at first (and it was OK for a get-you-going thing) but then got a set of Rod Elliot's active crossovers and they are really excellent. I use a set of HH amps and you can see why they were used so extensively in studios, fantastic things but they do have fans, they weigh a LOT and they are old. Go for MC2 if you want something more modern.
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