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Posts by Gitarrenschlumpf
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Two coaxes sitting next to each other don´t work. I know, there are companies out there, who have something like that on the market, but I don´t want to sell it.
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Hi,
I tried this, but it didn´t work. There´s no room for 2 tweeters on the baffle of the Palmer 2x12". And a empty 4x12" cabinet is too big for just a 2x12" DIY cab. That´s why the DIY 2x12" is GFR and not FRFR.
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My opinion (opinion, mind you) is that if you want the traditional "amp-in-the-room" guitar cab experience, simply turn off the Cab Module on your KPA and connect it to a traditional guitar cab (although you may need an external amp). However, this is going to limit you tonal flexibility, as the physical guitar cabinet is going to be contributing the majority of your over-all tone/sound.Yes, that´s right. FRFR and GFR can only replace the sound of a guitar cab, that´s been recorded through a microfone. To get the feeling of a real guitar cabinet, is the holy grail, everyone is searching for. IMHO
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Try the following: Take a profil includiong a V30 you know very good and hear it through studio monitors or any other flat FRFR amplifications. Headphones are okay for that too. Now set an EQ block to block X and cut everything above 2 or 2,5 kHz. Does it sound the same? ... If yes, you can use any PA low-mid driver for your amplification.
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I believe you guys are comparing apples with oranges here.
The coaxial design on the XiTone I take is to achieve FRFR, not GFR and what @Gitarrenschlumpf mentions on the Blueamps with a broadband driver, is restricted to achieve GFR. Both devices use a 2 driver approach for FRFR, one coaxial an the other non-coaxial. Or I am wrong?
My understanding is that to achieve GRFR the XiTone only reduces the HF with the -3 dB pad, and Blueamps totally shuts down the HF driver. right?
Yes, you are right in both questions.
Coming back to the original discussion.
Reading that sentence on the quote, you are basically saying what I thought initially that a GFR Cab that has a x-over point over 10.5 kHz would be more than enough to reproduce any profiled/modelled Cab. That would bring me back to my original question in the topic title.I am interested in knowing the point of view of @Gitarrenschlumpf about this topic. if we are not playing tracks or any other instruments, would not a GFR Cab be enough and FRFR overkill? (Strictly speaking about guitar).
My point of view: If you play electric guitar without sparkling sounds (earlier clean Lukather, earlier Marillion, some Oldfield... everything above 10 kHz), it´s enough to have a GFR amplification. It sounds more realistic, if there are broadbands inside. But if you want the whole range and acoustic guitar, FRFR is the right way.
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Sorry. My first post wasn´t meant to be a correction to your post above.
Tha advantage to a coax in GFR-mode:
The coax speaker has 2 different voice coils. The tweeter sits behind the LF-driver. So all the stuff above the x-over point comes out of the speaker a little later. In GFR mode also, if it´s just a 3 dB pad on the HF.
The GFR cabs in the way we build it have only one voice coil. So the whole sound comes out at the same time.
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GFR in the way we do it, are speaker cabinets with speakers inside which do the whole spectrum of GFR. And that´s the advantage, better than a coax, if you play electric guitar. The toggle switch switches off the tweeter, that starts at 10 kHz. Everything under 10 kHz comes out of the 12 inch speakers.
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To be clear: A GFR cab is NOT a simple 2-way cab with disabled tweeter.
We have a new cabinet, which can do both, FRFR and GFR, by toggeling a little switch. Search for BlueAmps "Beast", if you are interested.
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We have a customer here, who plays with in-ears, but needs the interaction with the guitar. So we built him a custom FRFR system, that is able to cut everything above 800 Hz with a little switch. He says, he´s very happy with it. He feels the interaction and all the other band members are also happy with it, because they don´t hear that much of the guitar.
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Yes, it would be very interesting to see the frequency response curve of a single "12 inch speaker" with "ceramic", "250 watts RMS", 97 dB/w/m and HF up to 16 kHz at -3 dB without a coax.
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I wouldn´t put anything that changes the sound behind the Kemper. Why the BBE?
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So you can also order the Kemper-sized one as well?
Yes. The custom racks go from 2 up to 6 rack units. The Kemper Rack is 3 RU.
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This is a custom rack and can be ordered at BlueAmps.
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All the companies tweak their crossovers. But there´s no need to voice an active FRFR cab (speakers+crossover+housing) for a simple class d power amplifier. The only reason could be the Kemper sign.
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Why do you want something like that with the Kemper brand? There are some companies out there, who sell exactly what you are looking for.
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