#Spark amplifier how to#
#Spark amplifier mods#
#Spark amplifier software#

Really interesting to read the initial thoughts that the 63mm magnets are undersized, and that suggests that maybe there is room for significant improvement 'inside the box'.Īs PRR said, they have almost certainly spent all their money on the modelling. Perhaps you folks know some great frfr speakers this thing could push? For bass though I am guessing you'd need some more amplification, so that would probably mean the headphone out into a powered frfr (headrush 12 is cheap)? The amp is 40watts (apparently) so I am not sure how it could ever really function as a modelling amp that will cover bass guitar. Several folks in the group are working on an external speaker jack solution. Also, I don't know what TS parameters means.

#Spark amplifier how to#

I don't know what their DC resistance is, or how to measure that. I'm getting the exact inside & outside measurements of the cabinet. I also have found lots of pictures of the circuit boards should anyone be interested in those as well. What is the best way to share pictures? An imgur album link, or share them all on here? I don't want to spam this thread with pictures, but maybe that is the best way. I am working on getting some pictures, and exact measurements of the cabinet. I'll get the UMIK 1 out and take some measurements asap. This could be a really popular practice amp as it is selling for about $250 US at the moment. My hope is that with the REW graphs, and those dimensions then together we could identify a better set of drivers.

#Spark amplifier software#

I seem to remember some loudspeaker design software where you could put in the cabinet dimensions, but for the life of me I can't remember the name of that software. The speakers have identical ink-printed markings on the back of the approx. The back reflections from the 4” speakers appear to just rattle around inside the box, and whatever gets reflected into the bass tube determines bass response.There are no other internal ports or baffles.The bass reflex port appears to be a 6” long, 1/8” thick, 1-1/2” ID plastic tube, offset from the flat back wall of the enclosure about 0.5”, and flush mounted to the front speaker baffle.The speaker baffle, also 1/2” thick MDF, has been routed down 1/8” to inset fit the 4” speaker frames.I have not had a chance to tear into mine yet to get the exact cabinet measurements.

#Spark amplifier mods#

The following is from another person on the Spark Amp Mods group. Can anyone here help me interpret the REW results? I have a UMIK 1 and REW (from an old mini dsp hi-fi setup).

My focus is on measuring the speakers, and seeing if we can just drop in some other speakers. There is a pretty good group on facebook called Spark Amp mods where a couple of folks are pulling it apart. The main selling point of the amp is that it is a practice amp that can analyze songs to show you the chords, create a backing track to play against, and has a tone library. It is not great for bass, but sounds okay for guitar. It is 40 watts, and has two (supposedly frfr) 4 inch speakers. Recently, more and more folks are receiving delivery. It has been in pre-order for a while with only a few being shipped. Positive Grid are selling a small guitar and bass amplified called the Spark. I'm hoping to get some advice from y'all, and to share what I learn with others. I have a little background in DIY audio, but I am still very much a newbie to this.