Find great deals for JBL M Stereo Mono Variable Crossover Rack Mount. Shop with confidence on eBay!. This crossover was rack mounted and is in good working condition. New lower price!. Please add the letters JBL behind part numbers when ordering. Page 3. JBL M Page 4. JBL M Page 5. JBL M Page 6. JBL Page 7. JBL

Author: Kek Gardalmaran
Country: Bhutan
Language: English (Spanish)
Genre: Career
Published (Last): 20 May 2010
Pages: 499
PDF File Size: 14.43 Mb
ePub File Size: 4.63 Mb
ISBN: 765-9-11866-502-6
Downloads: 54800
Price: Free* [*Free Regsitration Required]
Uploader: Gardak

Originally Posted by wpod.

I would have a tech solder the IC,s directly to the boards IC pinouts, or you can do it yourself if your handy with a soldering iron! Stock, its untity gain in and out.

Originally Posted by Baron Results 1 to 6 of m5522. What do you think? External ground link terminals for independent access to signal and chassis grounds, permitting greater flexibility in system grounding. The bottom line is that you want to sum flat through the crossover point so 50Hz on either side on the dial doesn’t really matter as k552 as you are flat through the transition.

You don’t need to engage the divide by 10 switch.

JBL M average used price – Audiofanzine

Gain, both input and output IC feedback loop resistors should be changed to increase available gain, how much is the question! If you don’t have an RTA just go with what sounds best to you. With just about EVERY speaker I, and my friend, who also does commercial audio, we just find 18db Butterworth filters allow us to create a much more seamless sound with 3 way or 4 way active setups.

All four devices incorporate Servo-Balanced outputs for proper gain matching and elimination of extemporaneous noise. Noise Gate Control Ranges: Wide bandwidth, flat response; 10 Hz to 40 kHz.


If you have an RTA you can use that to determine where you are. TODAYS top quality crossovers, like Bryston, have selectable slopes, and the dsp crossovers have 6,12,18,24,36,48, and 52 db slopes, as well as one dsp unit jl db brick wall linear phase filters available. Complete user control over Threshold, Attenuation, Attack jbk Release controls.

Advice on JBL M crossover. Extra Tabs by vBulletin Hispano.

Extra Tabs by vBulletin Hispano. Better than dB unweighted. Immeasurable lower than noise floor. User adjustment of Threshold, Attenuation, Attack and Release controls.

JBL M552 average used price

But, 18db Butterworth sums flat at unity, which I think sounds nicer. Some prefer the with the output transfomers removed from the signal path, this may or may not be to your liking. You could use silver mica disc caps, said to be superior.

Power supply, mfd axial 25v caps stock, m552 to upgrade to an axial mFd 50v cap, there are three to replace.

Came running from down the hall, thanks Grumpy! You may want to consider better diodes high speed, soft recovery, Vishay diodes come to mind for the power supply rectification as well.

JBL M552 Stereo Mono Variable Crossover Rack Mount

This flies in the face of current engineering trends and practices and is to some, highly questionable, but, we find the sound between the ranges to gel together seamlessly, and eminate as ONE using 3rd order butterworth filters, BUT higher order slopes 24db, 36db 48db, etc produce ubl sound that to our ears, make the ranges BASS, MIDRANGE, HIGHS sound like they are sparate from each other, and lacks the seamless image I consider natural sounding.

Subsonic filtering for protection of low frequency transducers from over excursion. I presume it is HZ. I just want to double check with you on this.

Advice on JBL M crossover

The time now is Results 1 to 8 of 8. Of course, 24db slopes, and higher, allow higher power to be used for compression drivers and tweeters, but, unless your doing HIGH POWER commercial sound, I don’t think this is a problem for you. Gate function with independent Threshold control for ,552 channel. If you can get one cheap and spend some money to clean up the power supply caps and such, j552 probably fine, but if you want to upgrade from what you have – there are better crossovers around.


When dramatically increasing the size of the power supply capacitors, it is certainly a good idea to also increase n552 handling capacity of the rectifier diodes. Extremely low distortion; THD 0.

If you see the pic, I currently set the crossover at the center bar, namely between and If you find a mintI will be more than happy to pass modification info to you, and whatever assistance you want, to achieve the best you can get from the However, I have moved on, to bryston, and I havent looked back yet.

DSP crossovers also have the option of selectable filter types as well. Thanks a lot for your feedback and advice. I do ,552 like 24DB slopes. LF summing combines both channels for subwoofer applications where only one mono channel is needed. I, personally, have been a long time urei user, AND I loved it back in the vinyl days.

Sometimes, its a bitch getting the EXACT setting you had when you futz with the trying to dial it in to sonic perfection. Seeing as that was almost a decade ago, I wouldn’t wait up for a reply.

Author: admin