Subkick v1!

Last week I spontaneously had a go at making a subkick. It was for use in a recording (not mine) and was constructed from a long rejected Carlsbro PA speaker.

Although impedance was an expected issue (an 8 ohm speaker connected to a mic preamp expecting 200-300 ohms) we had no specific way of matching so plowed on nonetheless.

After removing the driver (which was a 12″ driver – we were working with what was available) pins 2&3 were connected to the +ve and -ve speaker terminals respectively.

A 40dB inline pad was found to be appropriate to control the signal, and experiments with a passive DI box proved to yield the same results as a pad.

The resultant recordings when combined with a D112 were thought to be more than usable and well, you can hear for yourself via the SoundCloud player below. Please note, at present “Both” is just a 50/50 mix of the D112 and the Subkick mic, I will try and create a more usable sound soon.

The driver was then remounted in the speaker casing, mainly for convenience but also as Shaun’s valiant efforts to construct a tom shell mount were ongoing, and we wanted to see what it sounded like.

On the topic of mounting the subkick, we plan to A/B the subkick in both the speaker casing and the tom shell to investigate the pros and cons of each approach. There is certainly more protection in the speaker casing, and logic would suggest that it’s dimensions are more accurately matched to the driver than the 12″ tom shell.

My project planed to use a 10″ driver so comparisons will be drawn when it its complete.

Also, in the interest of driver quality testing, a recently departed Genelec 8030 driver may also be resurrected as a subkick in the near future.

Stay tuned!




A new project

I am considering undertaking a small project, after discovering a long lost 10″ driver in my (parents’) garage.

I have always wanted to try making a speaker into a dynamic microphone and this provides a great opportunity. So, following advice from my dad and various internet sources, I will attempt to make what Yamaha have deemed a “Subkick”, and will post the progress and results as blog entries under the category “Subkick”.

If successful, it should provide a great mic to record both bass guitar amps and kick drums, although I suspect it may be more suited to getting the sub-bass from the kick drum – something in the 60Hz range – rather than capturing bass amps. Although the sub bass from a bass amp is just as useful but we shall see. If there is a reasonable amount of high end, it might be more versatile than I suspect!