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Old 16th December 2016, 09:00 AM   #1
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Default I want 13 channel power amplifier with in built active crossover ?

Please suggest if any multichannel amplifier with in built active crossover. Wattage per channel should be 100-200W
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Old 16th December 2016, 09:04 AM   #2
adason is offline adason  United States
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no such thing...
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Old 16th December 2016, 10:47 AM   #3
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This is *DIY*audio...
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Old 16th December 2016, 02:05 PM   #4
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A multichannel amplifier containing the crossover networks for even just a few amplifiers, will need to have the individual amplifiers or "channels" carefully matched to the particular speaker drivers and arrays used, whatever type of crossover is used. So it will most likely need to be be custom designed and built, complete with the specific loudspeakers required. That will make it very expensive or if it's DIY, it will take a lot of time if it's to perform as well or better than existing, simpler multchannel products.

The amplifiers could also need to be grouped and switched alternately to suit perhaps mono, stereo or multichannel signal sources too. Otherwise, unless you have the specialised measuring microphones, instruments and software to calibrate the crossovers for whatever speakers are available and purpose, you are wasting your time considering this grand scheme.

Visit the Multiway Speaker and Analog Line Level forums here and do some reading on the topic elsewhere too, before you decide that you want something that isn't available as a retail product or hasn't even been discussed here as a project or is just impractical or too hard to DIY.
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Old 16th December 2016, 02:37 PM   #5
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You will need to build this. You will be able to use modules etc, eg. minidsp and suchlike.

You need to do some research on the required power for bass, music and high channels. There is no need for all the amplifiers to be high power, but possibly need for more for subs.

If you don't feel like doing this yourself, then you really ought to reset your ambitions.
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Old 16th December 2016, 04:46 PM   #6
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I'm building something similar except it is 7 channels not 13 and lower power. However I'm not going to put the active crossover inside the amp. My first idea was to put them together, but there's a lot of reasons to make them into two units. First of all, if all the amps are the same then I can swap inputs to check if it's the amp or the crossover that has the problem. Second, I can build it first with an op amp based diy crossover and change that out for a miniDSP later. Third, it breaks the problem into smaller pieces that can be researched separately.

The big drawback is that I'm going to have 14 RCA Jacks each on my crossover and amp boxes, and big bundle of patch cables connecting them.
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Old 16th December 2016, 10:43 PM   #7
kct is offline kct  Canada
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Wow 13 channels is a lot. I am building 5 channel independent mono blocks with XLR symmetrical inputs, 120W per channel based on the good old Technics SE-A5. Channel assignment and processing is done externally with DSP and professional audio gear. All 5 channels will be fitted into one case and is estimated to weigh about 25kg to 35kg. Unless you are looking for a wonderful Class D, a 13 channel will definitely be a costly heavy weight.

Anyway, good luck finding a fully integrated off the shelf 13 channel unit.
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Old 17th December 2016, 02:56 AM   #8
Bare is offline Bare  Canada
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Quote:
Originally Posted by dipankar862 View Post
Please suggest if any multichannel amplifier with in built active crossover. Wattage per channel should be 100-200W
File that notion in there with a wish for an Antigravity device.
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Old 17th December 2016, 04:40 AM   #9
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Quote:
Originally Posted by dipankar862 View Post
Please suggest if any multichannel amplifier with in built active crossover. Wattage per channel should be 100-200W
What is the application?
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