Logitech Z623 Home Speaker System. Service & Support. Limited warranty - 2 years. From drivers and manuals to diagnostic tools and replacement parts. View and Download Logitech Z523 quick start manual online. At Logitech’s option, (1) to repair or replace the hardware, or (2) to refund the price paid.

While it may be the standard I'm not a fan of subwoofers and this is only the second product I've reviewed that has one. Component Overview: Driver Satellites use a 2.5' full range driver, and once the grill is removed the driver actually looks pretty nice. The surround is a soft butyl rubber, and instead of a dust camp or whizzer there is a nice shiny phase plug in the center of the driver. Back of the driver shows the z623's are magnetically shielded and seem pretty well made. Grills Removing the grills took a bit of paper clip folding, but came off cleanly once I applied the right amount of force. Grills are a metal mesh and seem open enough to not interfere too much.

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DSP Correction: Working from left to right. I cut a massive chunk of the bass, and then used that headroom to extend the bass to about 32Hz. There was a resonance of some kind coming from the subwoofer in the 600Hz range. I had to cut it, and it sounds better now. Leveled off the rising response in the midrange, and chopped the nasty cone breakup distortion above 10k. Corrected Listening Notes: Audiophile music sounds great on this, of course well recorded music sounds good on almost anything. Playing M O O N's Hydrogen track measures 105dB at 50Hz before the amp runs out of juice and starts distorting.

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Keep in mind with close mic the treble response is going to taper off and there is an artificial hump around the resonant frequency of the driver. Regardless of the anomalies in the measurement it's clear above 6k the little full range drivers are having a panic attack from being played too high. For the bass response I'm using a technique I just came up with, 'kind of close ground plane measurement.' Basically to avoid floor bounce the mic goes on the floor like a traditional ground plan measurement, and to keep room modes to a minimum the mic is kept equidistant between the port and woofer 1 foot away from the corner of the sub.

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The standard has been watered down to a loudness spec, ability to play 85dB with 20dB peaks, so just about any ole garbage can be THX certified. Design Overview: The Logitech z623 speakers follow the standard 2.1 satellite and subwoofer format. While it may be the standard I'm not a fan of subwoofers and this is only the second product I've reviewed that has one. Component Overview: Driver Satellites use a 2.5' full range driver, and once the grill is removed the driver actually looks pretty nice. The surround is a soft butyl rubber, and instead of a dust camp or whizzer there is a nice shiny phase plug in the center of the driver. Back of the driver shows the z623's are magnetically shielded and seem pretty well made.

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Turns music into movie special effects. Treble is spiky and headache inducing in the dog whistle range. I've now got a massive headache from the treble. Fuck this shit, I'm done. Measurements: These little sat sub combos are a pain to measure accurately. I've got to fight room modes in the crossover region, as well as phase cancelation and other not good things. This is a close mic of the satellites.

Service Manuals and Schematics Fulltext search - Service Manual free download,schematics,datasheets,eeprom bins,pcb,repair info for test equipment and electronics Schematics 4 Free Service manuals, schematics, documentation, programs, electronics, hobby. (welcome to eserviceinfo.com at 16 Aug 01:25 pm GMT) [news] [/news] Login: Password: Fulltext search results This is the full text index of all Service Manuals, schematics, datasheets and repair information documents. Files are decompressed (supported zip and rar multipart archives) Text is extracted from adobe acrobat pdf or plain text documents so that you are able to perform searches inside the files. Enter Search results for: Logitech Z623,speaker system File File in archive Date Context Class Size Popular Mfg Model Relevance Added by Teac-SPX2i speaker.pdf 28-4-2010 SR-X2i 3.

Bass coverage is pretty even with the subwoofer close enough to kick. Too much of the subs performance feels like port noise instead of driver, but for the most part it's doing the job.

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Keep in mind with close mic the treble response is going to taper off and there is an artificial hump around the resonant frequency of the driver. Regardless of the anomalies in the measurement it's clear above 6k the little full range drivers are having a panic attack from being played too high. For the bass response I'm using a technique I just came up with, 'kind of close ground plane measurement.' Basically to avoid floor bounce the mic goes on the floor like a traditional ground plan measurement, and to keep room modes to a minimum the mic is kept equidistant between the port and woofer 1 foot away from the corner of the sub.

Leveled off the rising response in the midrange, and chopped the nasty cone breakup distortion above 10k. Corrected Listening Notes: Audiophile music sounds great on this, of course well recorded music sounds good on almost anything. Playing M O O N's Hydrogen track measures 105dB at 50Hz before the amp runs out of juice and starts distorting. This is enough to get you evicted from most apartments, more importantly, it meets the THX standard.

This is enough to get you evicted from most apartments, more importantly, it meets the THX standard. Trying for more, the deep bass in M O O N's Release has headroom falling to about 95db at 35Hz before the subwoofer runs out of excursion. Bass coverage is pretty even with the subwoofer close enough to kick. Too much of the subs performance feels like port noise instead of driver, but for the most part it's doing the job.

SHARP - Mini Component System Model: CD-M4000W and Speaker System Model: CP-M4000 Audio 3869 kB 124 SHARP CD-M4000W jesuslel Stereo Speaker protection schematic Audio 78 kB 253 J.M Industries JM-2 Speaker protection mifune 5.1 Multimedia Speaker system Electrical diagram 1294 kB 1956 Philips MMS 4 291 40159 ursuiulian Service Manual - (pag. 11) Active Speaker System Audio 631 kB 629 Aiwa Hi-Fi TS-W45 09-996-403-7R1 salvacolnome 4-way powered speaker system Audio 915 kB 3382 JBL S412P toltec speaker repair document Audio 34 kB 5373 bose 901 speaker prd528 Service manual for home cinema speaker system HT-BE1/SA-WBE1/SS-BE1 Audio 2000 kB 821 Sony HT-BE1 docentas Technics SB-202 SB202 speaker system operating instructions and specifications. Audio 660 kB 400 Technics SB-202 _mb_ Schematic diagram for ACTIVE SPEAKER SYSTEM models: TS-SLW700, TS-SLW701 Audio 1512 kB 2013 Aiwa TS-SLW700 TS-SLW700 dupator datasheets for some of the philips AD speaker units sold in de 80's. Example's: ad12100/w4 - ad8061/w8 - ad0140/t8.

DSP Correction: Working from left to right. I cut a massive chunk of the bass, and then used that headroom to extend the bass to about 32Hz. There was a resonance of some kind coming from the subwoofer in the 600Hz range. I had to cut it, and it sounds better now.

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Measurements: These little sat sub combos are a pain to measure accurately. I've got to fight room modes in the crossover region, as well as phase cancelation and other not good things. This is a close mic of the satellites.

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Stamped steel basket, big magnet, paper cone, and foam surround - looks like a pretty good driver considering the price of the system. No vented pole piece on this driver, instead there are tiny holes in the cone behind the dust cap to vent the pressure. Spider looks generic but functional. Cabinet/Amp/Port The satellites are two piece ABS plastic and have 6 screws holding the two halves together. Honestly this is probably good enough because the driver is so small, and crossover point so high. The subwoofer cabinet is 9x12x11 inches and cheap mdf, but heavier than I expected. In comparison to the size of the box, the port on this subwoofer is massive.

Also, there is a headphone output and an aux input on the side of this satellite. Desktop Setup: Satellites are very sensitive to placement. A slight toe-in and elevation with some blocks of wood make for pretty good imaging, although the sound is a bit too directional for my taste. Listening Notes: Bass is really heavy, turning down the knob removes a bit too much of the 300-100Hz range without cutting the 60Hz mess that is actually the problem. Just going to have to deal with the bass as is to keep the midrange balance.

Service Manual free download,schematics,datasheets,eeprom bins,pcb,repair info for test equipment and electronics Schematics 4 Free Service manuals, schematics, documentation, programs, electronics, hobby. (welcome to eserviceinfo.com at 16 Aug 01:26 pm GMT) [news] [/news] Login: Password: Search service manuals database Enter Mfg: Type: Show Files Order by Type: Size than Class: Please, enter search term! Search results for: (found: ) File Date Description Class Size Popular Mfg Model Original Added by No Results Found!

Lots of chips in there doing a bunch of stuff. I'm guessing there is some logic for switching inputs, some equalization, a crossover for the sub, and 3 channels of class D amplification. Inputs The z623 speakers have two inputs, RCA and 1/8 inch headphone jack. There is no way to switch inputs and I didn't bother trying to play two sources at the same time, so I have no idea how switching is handled. Controls Right speaker has volume and bass knobs. Volume pot seems clean and I did not notice any imbalance or static while testing. Bass knob has a centering indent so you can find the default position easily.