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My new office

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gnif:
Just a few pics of my garage converted to office :)

CewHit76:
Looks good man!!!

Spektre21:
Badass!  Speakers look good, are they custom?

CewHit76:
Everything in gnif's crib is custom!! A lot of that stuff he's designed!

gnif:

--- Quote from: Spektre21 on June 24, 2016, 08:23:57 am ---Badass!  Speakers look good, are they custom?

--- End quote ---

Thanks! They are indeed, they are custom made bi amplified (not to be confused with bi-wired) mid-high range speakers, 100W RMS each. I built a custom pre-amplifier that uses Linkwitz-Riley active crossovers to split up the frequencies before amplification for low (< 120Hz) mid (< 1.2KHz) and high. The mid and high outputs are fed into a four channel amplifier, and then each driver in each speaker is fed directly from the amplifier without any passive crossovers or filtering. The low output is fed into an active sub woofer I scavenged from a junk pile and bypassed it's tonal controls, so the signal from my pre-amplifier is fed directly into the sub's amplifier without any additional filtering, etc.

To determine the best crossover frequencies, I am no mathematician, so I used an adjustable dbx active crossover I repaired from eBay, which allowed me to tune and play with the output until I found the best crossover points for each individual driver for my liking. It is tuned to sound good and not favor any particular type of music, from Bach to the BEP, it sounds great.

Since I took over the tonal controls for the sub I also installed a sub level control right up with the volume controls on the pre-amp, which makes it handy for night time listening so I do not disturb the family/neighbors. It is also great to boost it up a little when playing games with explosions, etc... nice to feel them :).

The net result is a small hifi system that truly kicks the crap out of anything you can buy for under $10,000 and only cost me about $500 to build in total. Nobody sells bi-amplified systems anymore (since the late 1970's), the era of audio professionals has ended and now we just have "audiophiles" that will buy anything if it costs lots of money, because it must be better.

If you want a true audio experience, avoid passive crossovers at all costs and invest the extra cash in the additional amplifiers needed to drive each driver individually.

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