On Board Amp

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Bill Fitzmaurice
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On Board Amp

#1 Post by Bill Fitzmaurice » Mon Oct 15, 2018 2:08 pm

This on board amp from Parts Express looks good, at a price that makes sense.

https://www.parts-express.com/dayton-au ... h--300-798

It could be mounted on just about any of our full range cabs with minor modifications. With DRs the logical method is on the back, using a small extension box mounted there. It has enough power to drive a pair of cabs, so it would be easy enough to install a 4 pole Speakon on the cab containing the amp and one on the extension speaker. Full DSP that includes crossover, EQ and limiting plus Bluetooth makes this a very attractive rig.

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Re: On Board Amp

#2 Post by CFBIRD » Wed Nov 28, 2018 11:14 pm

Love that DSP!

I wonder if they are using eGaN FET or MOS FET?

I expect someone to dip their toes in the water and report back :)

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eshadeol
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Re: On Board Amp

#3 Post by eshadeol » Fri Jun 07, 2019 12:04 pm

Would I still have to use a crossover made by me or speakerhardware.com , er something like that?
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Re: On Board Amp

#4 Post by Bruce Weldy » Fri Jun 07, 2019 12:31 pm

eshadeol wrote:
Fri Jun 07, 2019 12:04 pm
Would I still have to use a crossover made by me or speakerhardware.com , er something like that?
No, there's plenty of DSP to achieve a good crossover. But, if you want to drive two speakers with it, you'll need to use NL4 connectors and 2 Pair speaker cable to get the highs and lows to the other speaker.....

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Bill Fitzmaurice
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Re: On Board Amp

#5 Post by Bill Fitzmaurice » Fri Jun 07, 2019 12:40 pm

eshadeol wrote:
Fri Jun 07, 2019 12:04 pm
Would I still have to use a crossover made by me or speakerhardware.com , er something like that?
Read the section of your plans regarding bi-amping.

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Mark Coward
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Re: On Board Amp

#6 Post by Mark Coward » Mon Aug 05, 2019 2:36 pm

I've been looking at these, replacement amps for the Turbosound powered cabs with the Ultranet digital inputs for Behringer/Midas gear. It's very attractive to run digital I/O over ethernet cables, less A/DA conversion and noise from analog. I haven't been able to find out if the full range version is biamp or not, the power rating is crazy for the IQ series. A lot of bang for buck if these can be tuned, it appears that custom DSP is possible.

https://www.fullcompass.com/prod/533692 ... y-for-iq12

https://www.fullcompass.com/prod/533727 ... p-assembly
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Bill Fitzmaurice
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Re: On Board Amp

#7 Post by Bill Fitzmaurice » Mon Aug 05, 2019 2:56 pm

The power rating is BS. That's what happens when a company like Turbosound gets bought out by Behringer. I'd have to know a lot more about them before I'd take a chance on them.

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Re: On Board Amp

#8 Post by Bruce Weldy » Mon Aug 05, 2019 6:16 pm

Maximum output power* 2,500 W
*independent of limiters and driver protection circuits


That's from the TBsound PDF.....at least they admit that the rating is crap....just not in so many words.

All of the powered boxes shout about peak power, when the crappy drivers they have couldn't withstand 400 watts at 60hz without blowing up.

It's all smoke and mirrors. Not saying they can't sound good - it's just that they are promoting lies to sell their boxes. And all of the manufacturers do it. Sad....

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Re: On Board Amp

#9 Post by SethRocksYou » Mon Aug 05, 2019 9:16 pm

Even long time trusted names like QSC are big offenders now-a-days... Their K12.2, powered 12" mid/High cab is advertised as "2000 WATTS". Uneducated consumers and even seasoned musicians not in the know eat those statements and ratings up like it's birthday cake. Even my dad looks at me like I'm crazy when I tell him it's complete BS and doesn't mean a thing. JBL... EV... all spewing bogus 1500w+ numbers for their powered speaker lines. It's certainly not a "Behringer" thing. It's an industry wide sales tactic.

Now, this TurboSound deal, outside of the inflated rating... I do like the idea of using the UltraNet and network cabling. I currently run a digital AES/EBU signal from my S32 stage box to the DEQ2496 and also between the DEQ2496 and DCX2496, eliminating 4 DAC/ADC's from the signal chain.

Side note that's somewhat related; I've also been reading about people using CAT5E (and the like) to run up to 4 ANALOG signals/channels with success. Could clean up some runs as well as reduce cabling costs. The commercially available "adapters" are a little spendy for what they are. Here's one of the more reasonable offerings I've found, https://smile.amazon.com/dp/B07T92D5X4/ ... Db2VP9MVF

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Re: On Board Amp

#10 Post by Mark Coward » Tue Aug 06, 2019 2:56 pm

SethRocksYou wrote:
Mon Aug 05, 2019 9:16 pm

Side note that's somewhat related; I've also been reading about people using CAT5E (and the like) to run up to 4 ANALOG signals/channels with success. Could clean up some runs as well as reduce cabling costs. The commercially available "adapters" are a little spendy for what they are. Here's one of the more reasonable offerings I've found, https://smile.amazon.com/dp/B07T92D5X4/ ... Db2VP9MVF
You can DIY these, they've been around for a few years. Dave Rat makes them, and did some pretty convincing YT demo of running analog and digital I/O over the XLR connects https://www.youtube.com/watch?v=djep5sFmVsU . It requires STP Cat6, 4 twisted pair + ground. His are pretty pricey, found these on Ebay https://www.ebay.com/itm/4-Channel-XLR- ... SwbuddCwAI

I think a DIY using a rackmount with 8 or 12 XLR for the male end, and 2 or more 4x boxes for the remotes would be great for stage.
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Re: On Board Amp

#11 Post by ACUA » Tue Aug 06, 2019 3:22 pm

+1 on Dave Rat’s stuff. I plan to buy two of these amps and put one each into a peavey215 cabinet. That should help me get the most out of them. I am sad to see that you cannot run the low frequency low pass below 1khz that made me sad as they would have been great as a sub and top combo amp. Oh well I will report back once I get my hands on one of these amps
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Re: On Board Amp

#12 Post by SethRocksYou » Tue Aug 06, 2019 6:07 pm

Yup, that's the guy

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Re: On Board Amp

#13 Post by BrentEvans » Wed Aug 07, 2019 11:05 pm

Regarding the amps... amps intended for specifc cabs often have DSP curves designed for that particular cabinet. Probably not a great choice for DIY.
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