I am currently using a Rane AC23 to run 2 - 3 way speakers. I am not completely unhappy with the sound but I would like to try something newer. I have read some of the info in the thread about this item But I have questions for those who are using it. I am 71 years old and I cannot solder without burning myself. My hands shake badly and attempts to medicate made me a zombie. Is there any one here that might build what I need for a simple set up? Any idea what it might cost? thanks for your consideration. Please move if I am in wrong area.
If finding someone to build a custom 6-24 is fruitless, maybe have a look at this one box analogue XO https://sublimeacoustic.com/products/k231-stereo-3-way-active-crossover
Thank you for your reply. First of all, I just returned 2 - three way boards and a power supply to Sublime Acoustics. I spent about $250 for the boards, power supply, cables and adapters. I was not able to make it work for me. I spoke with Mark Longley by email but I could not get it to work.
weltersys- What would it take using the boards sold in the DIY audio store? I don't know. I would be willing to start out with a two way if I am asking too much.
I have a 6 channel Rane MA6 amp and it is fine except the fan is too loud.
I am retired and audio is my main entertainment. I just bought a pair of JBL studio monitors a few months ago.
weltersys- What would it take using the boards sold in the DIY audio store? I don't know. I would be willing to start out with a two way if I am asking too much.
I have a 6 channel Rane MA6 amp and it is fine except the fan is too loud.
I am retired and audio is my main entertainment. I just bought a pair of JBL studio monitors a few months ago.
A magnifying glass and a steady hand...
I have primarily used digital processing for the last few decades for it's flexibility to easily adjust for different set ups.
I had one of those. After cleaning out the tar and nicotine (old club install) it ran cool enough that the fan speed could be slowed down to quieten it with an externally mounted resistor.
That Sublime Acoustic xover looks like a cheap toy. The 6-24 is a powerful tool for experimentation, and sounds better than probably ANY opamp or DSP based xover, no matter the price. It is incredibly flexible, ultimately transparent, and perfectly quiet, even without an enclosure. It can be built inexpensively or with some audio bling. Many of the builders on the subject thread don't seem to grasp the utility, and treat it as if it were a fixed value commercial product. It is made to be adjusted until one achieves the optimum sound from any stereo pair of drivers. Of course it can be expanded to accommodate more drivers, which increases the complexity of integration. It is not simple to operate, but it is easy to use and adjust. What it cannot do is equalize frequency response of individual drivers or add gain. It can provide any crossover slope and adjust levels, but it cannot shape response. It can combine drivers in every way possible to achieve unusual system responses, or it can be tuned to perfectly match phase and native driver outputs.
Which Jbl monitors are you using?
If it’s one of the older legacy designs in the 43XX series l can help you.
I’ve done a fair amount of analogue crossover networks using the Nelson Pass kit.
Once it’s set up right is brilliant.
Cheers
Ian
Last edited:
308 mk2
I got one at Amazon for $150 and the second at Sweetwater for $200.
Could get both for $150 ea with a little patience.
I got one at Amazon for $150 and the second at Sweetwater for $200.
Could get both for $150 ea with a little patience.
That is already an active monitor with built in dsp and self powered
Can you explain exactly what you are trying to do?
Can you explain exactly what you are trying to do?
This particular model has built in active crossovers.
Unless you bought it for parts is a complete loudspeaker system.
I have a pair of these monitors myself so l am wondering what your trying to achieve here ?
Unless you bought it for parts is a complete loudspeaker system.
I have a pair of these monitors myself so l am wondering what your trying to achieve here ?
I have over 50 drivers and most have never been used. This would be second system to play with. JBLs are always ready to go. Heresies upstairs for my wife. Bozaks in the garage.
You need to define which specific drives you’re going to use before considering the 24 db kit. This is because it’s not adjustable after it’s assembled.
The drivers would need to be evaluated, a crossover point and slope determined.
From what you have said a simple straight forward dsp active crossover would provide you far more flexibility on the fly.
But you will need to be able to use a computer (laptop) to program a dsp cross over.
Come back with a proposal of your pick of drivers to make up a system.
Now that I think about it, I never added fan resistors on that amp (it already has one), but have added series resistors to other amplifier fans (12v or 120v) to slow (quiet) them down. 12v fans use ~1/10 the series resistance to slow them down.
The MA6 120volt fan normally runs fairly quiet (for an amp designed for PA use) with it's 200 ohm 25 watt resistor in series, which is shorted when the 60C thermistor closes, then it runs "full tilt" until it cools down.
After I cleaned the bar goo from my MA6, it always ran at the slow speed.
If you want the slow speed slower, add more series resistance to the 200 ohm 25watt R69 resistor:
Adding another 50 to 200 ohms in series should quiet it down enough and still allow the fan to start up.
If it doesn't spin up to speed within a few seconds, you have added to much resistance.
You could add a switch to short (bypass) the additional series resistors so you would have a normal/low speed choice.
Art