What size Amp? |
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KDW32
Young Croc Joined: 09 April 2010 Location: Green Hell Status: Offline Points: 539 |
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Use imgur, imgbb or something similar. Ask Google for picture hosting for forums.
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SnailSpace
Registered User Joined: 08 December 2022 Status: Offline Points: 221 |
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Perfect! Ha I’m on a roll! Such a shame you can’t upload photos/drawings I imagine this conversation may have not been so long ha! So that’s Tweeter Amp, Speakers connected, PV BW amp sorted - I think I’ll give you all Christmas off before I get into the Crossover ha! That does seem like some witchcraft!
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Earplug
Old Croc Joined: 03 January 2012 Location: Europe Status: Offline Points: 7216 |
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The 850 would be perfect for the 22's/HF in general. It's a lovely little amp. PITA:- Put it Where it Fits!! |
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Earplugs Are For Wimps!
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SnailSpace
Registered User Joined: 08 December 2022 Status: Offline Points: 221 |
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I think the penny has finally dropped for me yay got there in the end! Another question: RX 22 - Tweeters x4 (Can’t find much info on the Fane or Altai I have) https://peavey.com/rx-22-ct-driver/p/03616190 QSC USA Amp 850 https://www.hifiengine.com/manual_library/qsc/usa-850.shtml Would this QSC amp suit the PV RX22 Tweeters I have? PS does PITA stand for ‘Put It In The Amp’ ha! Edited by SnailSpace - 13 December 2022 at 12:00pm |
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Earplug
Old Croc Joined: 03 January 2012 Location: Europe Status: Offline Points: 7216 |
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"What is this way of connecting/linking boxes on exterior called?" I'd call it a PITA! As already noted, series is really for connecting inside the cabinet, very common in guitar cabs, where you might have 2 or 4 speakers linked up. That could be a mixture of series/parallel, depending on the ohmage of the speakers, eg some guitar speakers are 16 ohm. For PA, it would be more common to have 2 or more cabinets linked (in parallel) with short jumper cables. |
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Earplugs Are For Wimps!
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SnailSpace
Registered User Joined: 08 December 2022 Status: Offline Points: 221 |
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You mention each cabinet having 2 drivers? Each cabinet will have x1 driver - so can I still use this way of linking/connecting on the exterior ie x2 linked by ‘jumper’ cables with x1 cable going back to channel A, then x2 linked by ‘jumper’ cables with x1 going back to channel B? Conanski referred to it as jumper cables is this what this is? Is Series & parallel for interior wiring/connections or can it be used exterior? Apologies for me missing/miss interpreting info but it’s a while since I’ve been on a forum it takes some getting used to again all the ‘quoting’ etc. plus kids interrupting me ha! Edited by SnailSpace - 13 December 2022 at 11:06am |
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SnailSpace
Registered User Joined: 08 December 2022 Status: Offline Points: 221 |
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Thanks Konanski - I did think that Peavey where specialist guitar speakers but when the person who gave me the first BW’s said they where good bass speakers I just took it literally but makes sense now he probably meant bass guitar as it was from a live PA set up, I presumed they’d do the job elsewhere.
Did you see the earlier response to your post regarding ‘jumper’ cables?
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Conanski
Old Croc Joined: 26 January 2006 Location: Ottawa, Canada Status: Offline Points: 2537 |
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Every loudspeaker driver is designed and build with slightly different goals in mind, it depends on a lot of factors like what the intended use is. Smaller midrange and guitar speakers are built with light cones and relatively short voice coils for high efficiency and in the case of guitar speakers they actually want a certain amount of non linear(distorted) response as it adds color to the sound. High power subwoofer drivers have heavier cones to survive more abuse and higher air loads, and the voice coils are longer to control the cone at larger excusrions. The way a speaker works is pretty simple, when the voice coil is exposed to a voltage it generates a magnetic field that pushes or pulls(depending on polarity) against the magentic field created by the permanent magnet mounted around it. If you put a DC voltage on the voice coil ( +to +, - to -) with a 9v battery, the cone moves out and sits there. If you reverse the battery the cone move in and sits there. If you connect an AC voltage(like music) to the voice coil it vibrates in and out and generates sound. Those PV 15's you have are actually built more like guitar speakers with short coils and light cones, what that means is that they won't handle much power at lower frequencies before the motor(voice coil and magnet) loses control of the cone and distortion rises to audible levels. So to combat that a steep low cut filter is used to limit the amount of very low frequency energy it is exposed to. That is a standard thing for most PA subwoofer applications the difference is that the filter is set at a higher frequency for your PV drivers than it would be if you had modern sub drivers.
Edited by Conanski - 13 December 2022 at 2:46am |
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SnailSpace
Registered User Joined: 08 December 2022 Status: Offline Points: 221 |
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Thanks, not quite sure what that means yet but I will definitely refer back to it when I do get to setting up crossover.
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SnailSpace
Registered User Joined: 08 December 2022 Status: Offline Points: 221 |
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I have read & watched plenty to do with ohms law etc and its anything but basic and probably why the physics/maths/audio language side of it is taking time to sink in and for the penny to drop. I do understand that I have to split the frequencies and that is the quest I'm on, as I said in original post Im lacking the knowledge of this next step. I can make my own cables, Ive always done my own soldering etc I will eventually make Speakon cables. What tyope of special cable do you mean?
Edited by SnailSpace - 12 December 2022 at 9:54pm |
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SnailSpace
Registered User Joined: 08 December 2022 Status: Offline Points: 221 |
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+- Banana Plug Binding Posts on x4 of Jamo's and +- Jacks on the x4 Boxes with Black Widows in. I will eventually change to Speakon.
Edited by SnailSpace - 13 December 2022 at 10:02am |
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SnailSpace
Registered User Joined: 08 December 2022 Status: Offline Points: 221 |
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Yeah I missed the wording again, apologies.
Wired in Parallel Internally?
Sorry yes that's what I meant 3-way passive speakers which I presume will have a little crossover element in with mid & high still connected.
Yes I have a rack with my amp/mixer/pre amp in. I probably explained it wrong. I still want to have my rack one end of the room and the stack of x4, I just want to limit the amount of cables running back to amps from the stack. Which is what you are saying here by saying short 'jumper' cables between the boxes of the same type. I think I presumed series/parallel referred to a way of linking speakers at the back externally. So from what yourself and earplug are saying does this mean series/parallel is a way of linking speakers internally within the boxes? So maybe I should have asked how do I link them with jumper cables? If so what is the configuration of jumper cables? The Jamo boxes currently have Banana Plugs and the PVs have Jacks.(I will switch to Speakon but I imagine Ill do that when I make custom boxes and have used this current reconfiguration as part of the process of upgrading and learning)
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