Channel Dsp
2009
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 CISCO PVDM2 64 with hologram 64 channel DSP module Several can ship same day $105.00 Time Remaining: 24d 11h 11m Buy It Now for only: $105.00 |
 Cisco PVDM2 48 48 Channel Packet Voice Fax DSP Module $74.99 Time Remaining: 2d 15h 19m Buy It Now for only: $74.99 |
 AIM VOICE 30 Cisco 2600 3660 3700 30 Channel 4 DSP Advanced Integration Module $105.00 Time Remaining: 2d 13h 41m Buy It Now for only: $105.00 |
 Cisco PVDM2 48 48 Channel Packet Voice Fax DSP Module $79.99 Time Remaining: 2d 15h 20m Buy It Now for only: $79.99 |
 Cisco PVDM2 16 16 Channel Voice Fax DSP Module 1Mth Wty $108.50 Time Remaining: 11d 9h 11m Buy It Now for only: $108.50 |
 CISCO PVDM2 64 64 Channel Packet Voice Fax DSP Genuine $120.00 Time Remaining: 27d 6h 46m Buy It Now for only: $120.00 |
 Cisco PVDM2 64 64 Channel Packet Voice DSP w HOLOGRAM $219.00 Time Remaining: 26d 11h 49m Buy It Now for only: $219.00 |
 Cisco PVDM2 16 16 Channel Packet Voice DSP w HOLOGRAM $79.00 Time Remaining: 7d 10h 1m Buy It Now for only: $79.00 |
 Cisco PVDM 256K 12 Channel Packet Voice Fax DSP Module $179.95 Time Remaining: 21d 8h 22m Buy It Now for only: $179.95 |
 NEW Cisco 32 Channel Voice and Video DSP Module $1,029.99 Time Remaining: 17d 13h 16m Buy It Now for only: $1,029.99 |
 Cisco 8 channels Packet Fax voice Dsp Expansion Module Pvdm pvdm28 $278.49 Time Remaining: 26d 7h 30m Buy It Now for only: $278.49 |
 Cisco 16 channel Voice And Video Dsp Module Pvdm pvdm316 pvdm3 16 $537.43 Time Remaining: 19d 9h Buy It Now for only: $537.43 |
 NEW F S Cisco PVDM3 16 16 CHANNEL VOICE VIDEO DSP MODULE $444.00 Time Remaining: 4d 7h 46m Buy It Now for only: $444.00 |
 Cisco AS53 6VOX 6 Channel TI C542 based DSP for AS5300 $30.00 Time Remaining: 16d 20h 13m Buy It Now for only: $30.00 |
 Cisco PVDM2 8 8 Channel Voice Fax DSP Module 1Mth Wty $78.91 Time Remaining: 16d 20h 18m Buy It Now for only: $78.91 |
 Cisco PVDM2 48 48 Channel Voice Fax DSP Module 1Mth Wty $147.96 Time Remaining: 11d 9h 13m Buy It Now for only: $147.96 |
 32CHANNEL PACKET VOICE FAX DSP $1,134.99 Time Remaining: 20d 15h 57m Buy It Now for only: $1,134.99 |
 Cisco PVDM2 64 64 channel packet fax voice DSP module $595.00 Time Remaining: 8d 11h 36m Buy It Now for only: $595.00 |
 Cisco 32 channel Packet Fax Voice DSP Module $1,099.75 Time Remaining: 23d 18h 18m Buy It Now for only: $1,099.75 |
 Cisco PVDM2 32 32 Channel Voice Fax DSP Module 1Mth Wty $147.96 Time Remaining: 11d 9h 12m Buy It Now for only: $147.96 |
 Cisco 16 channels Packet Fax Voice DSP Module $547.09 Time Remaining: 11d 12h 56m Buy It Now for only: $547.09 |
 CISCO PVDM2 32 CISCO 2600 3700 32 CHANNEL PKT VOICE FAX DSP MOD SPR $1,107.01 Time Remaining: 17d 11h 27m Buy It Now for only: $1,107.01 |
 Cisco 64 Channel Voice and Video DSP Module $2,186.25 Time Remaining: 21d 19h 19m Buy It Now for only: $2,186.25 |
 Cisco 32 channel Packet Fax Voice DSP Module $1,093.17 Time Remaining: 21d 19h 21m Buy It Now for only: $1,093.17 |
 CISCO PVDM2 32 CISCO 2600 3700 32 CHANNEL PKT VOICE FAX DSP MOD SPR $1,066.85 Time Remaining: 15d 18h 19m Buy It Now for only: $1,066.85 |
 Cisco PVDM2 32 32CHANNEL PACKET VOICE FAX DSP $1,108.68 Time Remaining: 21d 9h 56m Buy It Now for only: $1,108.68 |
 Genuine used CISCO2821 + PVDM2 16 16 channel fax voice DSP module 2800 series $795.00 Time Remaining: 4d 21h 31m Buy It Now for only: $795.00 |
 Cisco Genuine CISCO2821 + PVDM2 32 32 channel fax voice DSP module 2800 $860.00 Time Remaining: 4d 21h 31m Buy It Now for only: $860.00 |
 Genuine used CISCO2821 + PVDM2 8 8 channel fax voice DSP module 2800 series $795.00 Time Remaining: 4d 21h 31m Buy It Now for only: $795.00 |
 Cisco PVDM2 16 16 channel voice fax DSP mod $115.00 Time Remaining: 7d 16h 59m Buy It Now for only: $115.00 |
 Cisco PVDM2 48 ChannelVoice Fax DSP Module 48 Channels $195.00 Time Remaining: 7d 16h 59m Buy It Now for only: $195.00 |
Channel Dsp
Digital Audio Crossovers
In the world of DIY Audio, building good passive loudspeaker crossovers isn't for the faint-hearted!
From the filter simulations to building & assembling the crossovers, there will most likely be more than one revision to get it right. Why? For one, because the software package you may be using to provide acoustic modeling of an enclosure & driver combo is only a model. In other words, an estimation based on math equations, not the real world where, for example, an odd reflection inside the enclosure may modify the response. Your choice of drivers will also interact with the crossover components/filter configuration, making it harder to simulate the system performance. In the end, any experienced loudspeaker builder would agree that there will always be some unknown element that software simulation doesn't cover. The trial & error with different configurations then wins hands down over the pretty software simulations. So you better get yourself ready with an extensive set of passive components, build multiple PCB's, start learning electronic theories (basic & advanced) and try out your luck to fit the previously simulated configuration. Quite a daunting task!
Digital crossovers
Coming to the picture are digital crossovers such as the miniDSP kit. With their great flexibility, ease of use and accurate response, controlling the parameters of a crossover becomes a child's play. A digital signal processor uses cascaded filter banks (IIR or FIR) to provide the processing you need. Forget about electronic design or PCB prototyping with our products. miniDSP kit, a low cost firmware upgradeable module, breaks the misconception of Digital Signal Processors (DSP) being expensive.
If you ever thought of building an active bi/tri/quad-amped loudspeaker , you must have also realized how complex of a task it is. A miniDSP kit, a small 4 channel amplifier and off you go prototyping your ideas. Loudspeaker prototyping finally getting back to audio, not writting code or understanding math equations.
Time alignment
In a loudspeaker cabinet, time alignment of each driver is paramount to proper wavefront reconstruction. Think of a tweeter and woofer, mounted to the front of your enclosure, their respective acoustic center will obviously be offset in space, so in time. The end result will be comb-filtering among other things. (Frequency response not uniform)
By combining time alignment along with the phase relationship from the crossovers, miniDSP kits can make acoustical outputs of adjacent loudspeakers to become coherent.One can easily prototype many configurations by modifying delay and crossover settings with a few mouse clicks.
Processed Active loudspeakers
miniDSP kits along with our soon to be released miniPower modules will be the perfect fit for DIYers in need of an easy solution to prototype small active loudspeakers. Neatly tucked inside the enclosure, the DSP + all digital amplifier combo will provide flexibility and useability DIYers always looked for.
Over are the days of passive filter prototyping, may the DSP fun begin!
For more information, check us out at miniDSP.com
About the Author
Tony is the co-founder of miniDSP, a company dedicated to digital signal processing for audio applications. Besides his passion for audio, electronics and music, Tony loves traveling through out Asia Pacific, discovering one culture at a time with what the world has to offer.
Fender Amp Channel Switch Problem?
I have a fender dsp 65 princeton..and lately, I couldnt get to switch to dirty channel...and the DSP effects are off as well...I plugged a footswitch and it could do the switching..but still no DSP effects....do you think theres a problem with the Amp Channel Button?I popped the fuse a while back since Its a 110V unit..im thinking if it might have damaged the circuits..have you encountered this problem before? Does shanghai have good amp repair shops? Thanks a million guys
There is a proper Fender footswitch for that amp http://www.dolphinmusic.co.uk/product/11450-fender-2-button-footswitch-princeton-65-dsp.html . If you are any good with electronics (or have a friend who is) there's the schematic at http://support.fender.com/schematics/guitar_amplifiers/Princeton_65_DSP_schematic.pdf
Having had a look at the schematic, apart from possibly the wrong kind of footswitch there are any number of things that could go wrong with the channel switching as it's quite complex. It is entirely possible that you damaged something before the fuse popped but it would take some time with an oscilloscope to confirm it. As for good repair shops, ask around at a few music shops they may know some good guitar amp techs and if two shops recommend the same tech then bingo you've found your man.
UBISOFT RESPONDS - DSP IS INNOCENT!!! (restore my channel!)
