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

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JBL M552 average used price

I mean, if you have an excellent tweeter, and your crossover point is hz, you want it to be hz, not hz, or changing drifting on it’s own. Thats older tech, and not as clean as the better designs of today. If you would like to talk further on the pro’s and cons of the what I think are the ,s strong and weak points, please feel free to PM me, I am happy to try to help!

There is a row of m5522 “Century” brand caps, I think these are film caps, and they can be upgraded to a better quality cap, will make an audible and positive difference. Outstanding dB dynamic range for lower noise, greater headroom, and unparalleled transient response.

You don’t need to engage the divide by 10 switch. And another question is, when ‘s in bi-amp mode, some say it’s better to set the crossover at HZ, rather than HZ. And I am basing this value solely on the estimated reduction of the power supplies ripple voltage.

Wide bandwidth, flat response; 10 Hz to 50 kHz. What do you think? During start up the initial surge current will be higher with the much larger capacitors, which could potentially over load and fry the original rectifier diodes.

You could use silver mica disc caps, said to be superior. 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.


User adjustment of Threshold, Attenuation, Attack and Release controls. However, I have moved on, to bryston, and I havent looked back yet. 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!

Servo balanced outputs provide automatic output level adjustment to accommodate either balanced or unbalanced feeds. I find 24Db to not have quite enough overlap between filter bands, sometimes 12db too much.

Greetings- I ‘ve been using a JBL M electronic crossover for biamping my s for about the last two years and have been quite pleased with the results. Based on the schematic, its quad op amp circuits – generally called negative feedback design.

Advice on JBL M crossover. Servo-balanced outputs provide automatic output level adjustment to accommodate either balanced or unbalanced feeds. Then, another thing to consider is the state variable filter frequency controls of the and output level attenuator pots.

Better than dB unweighted. Power supply, mfd axial 25v caps stock, good to upgrade to an axial mFd 50v cap, there are three to replace.

JBL M average used price – Audiofanzine

Outstanding dB dynamic range for lowest noise and greater headroom, resulting in superb transient response. Sometimes, you lose the output on ch 1, ch 2, ch 3, etc, and a tap obn the faceplate brings it back. Results 1 to 6 of 6.

I have found that although my modded ,s have an enchanting sound for analog, vinyl playback, it is NOT always the best when it comes to playing CD. As well as any frequency you desire can be dialed in, and the output level controls allow one to find those in between settings, unlike detented controls with their factory settings ibl 1DB increments. Outstanding dB dynamic range for lower noise, greater headroom, resulting in unparalleled transient jbll.

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Originally Posted by wpod. DSP crossovers also have the option of selectable filter types as well.

The one thing I will disagree with about current trends in filter technology today, is slopes, I like 12 and 18 DB slopes. If you don’t have an RTA just go with what sounds m52 to you. But, it is coloration, for sure. That is a known problem with the Originally Posted by pyonc. Stock, its untity gain in and out.

LF summing combines both channels for subwoofer applications where only one mono channel is needed. Complete user control over Threshold, Attenuation, Attack and Jbk controls.

Combines four independent channels of noise gate in a compact one rack space chassis. I would anticipate an audible j552. If you can get one cheap and spend some money to clean up the power supply caps and such, its probably fine, but if you want to upgrade from what you have – there are better crossovers around.

Gain, both input and output IC feedback loop resistors should be changed to increase available gain, how much is the question!

Advice on JBL M crossover

The had a nice sound, and with work, still does, IMO, BUT, know this, there are crossovers avaialble today that legitimately surpass that crossover in sonic traits. The result is a system that delivers balanced power response across both the horizontal and vertical planes for superb coverage.

RF filtering to defeat extraneous noise and ultrasonic oscillations. Wide bandwidth, flat response; bjl Hz to 75 kHz. All four devices incorporate Servo-Balanced outputs for proper gain matching and elimination of extemporaneous noise.

Originally Posted by Baron