scannerman Posted January 16, 2021 Share Posted January 16, 2021 so guys, I want to upgrade my bass that has an Aguilar OBP2 in it to include a low pass mid filter...similar to an Alembic or Wal filter. I used to have an Alembic and miss their filter and Q boost and finding that I use the filter setting on the ottobit jnr on its own quite a bit. trouble is, I'm not sure if this control/ circuit is available and where to get one from... anyone ever done a similar mod who can pass on some advice. thanks Quote Link to comment Share on other sites More sharing options...
ikay Posted January 16, 2021 Share Posted January 16, 2021 (edited) I recently bought a state variable low-pass filter with variable Q from Helmuth Lemme. Details here - https://www.gitarrenelektronik.de/produkte/aktive-elektronik/state-variable-filter-detail. High quality electronics and reasonably priced. Intended for onboard installation but I configured mine as an external pedal to have the flexibility to play around with different basses. Works great. Freq range is from 300Hz to 5kHz. Q factor is continuously variable (weak to strong) with a pot or you can use a 3-position mini-switch. There's also an Alembic style filter called JTEX Distiller made by a chap in Canada available on ebay: https://www.ebay.com/itm/JTEX-Distiller-Alembic-style-Resonant-Low-Pass-Filter-for-Basses-VIDEO-DEMO-/233803173958 Edited January 16, 2021 by ikay 2 2 Quote Link to comment Share on other sites More sharing options...
Owen Posted January 16, 2021 Share Posted January 16, 2021 Oooooh, that JTEX looks nice. Quote Link to comment Share on other sites More sharing options...
Jabba_the_gut Posted January 16, 2021 Share Posted January 16, 2021 This might be worth a look for filter type preamp. facebook.com/Lusithand Quote Link to comment Share on other sites More sharing options...
jazzyvee Posted January 17, 2021 Share Posted January 17, 2021 I have two sets of ACG EQ02 filter modules in my beater bass and I would like to have them put into a pedal instead so that I can use it as switchable eq. Quote Link to comment Share on other sites More sharing options...
BassBunny Posted January 17, 2021 Share Posted January 17, 2021 4 hours ago, jazzyvee said: I have two sets of ACG EQ02 filter modules in my beater bass and I would like to have them put into a pedal instead so that I can use it as switchable eq. I'm sure Alan had an EQ02 in pedal format. Sure I remember seeing it at one of the last UK Bass Shows in Manchester. Might be worth having a word. Quote Link to comment Share on other sites More sharing options...
jazzyvee Posted January 17, 2021 Share Posted January 17, 2021 I will check his site. Quote Link to comment Share on other sites More sharing options...
BassBunny Posted January 17, 2021 Share Posted January 17, 2021 25 minutes ago, jazzyvee said: I will check his site. Doubt it's on there. From memory it was a one off that John East knocked up for him. A quick email or call would probably be the best way forward. Quote Link to comment Share on other sites More sharing options...
scannerman Posted January 17, 2021 Author Share Posted January 17, 2021 thanks for all your helpful comments peeps... Quote Link to comment Share on other sites More sharing options...
bloke_zero Posted January 18, 2021 Share Posted January 18, 2021 On 16/01/2021 at 21:41, Jabba_the_gut said: This might be worth a look for filter type preamp. facebook.com/Lusithand I put one in a bass - I really like it, but I'm not sure it'd get you where you want to go when you're talking mids as it's a pure lowpass with a switch to increase the resonant peak. Don't get me wrong - it's kind of perfect for me, but if I'm reading you right might not provide enough adjustment for you? Alan was saying here that he has some of his EQ-01 : Quote Link to comment Share on other sites More sharing options...
ikay Posted January 18, 2021 Share Posted January 18, 2021 If you want better control of mids then something like the John East Mid Sweep module would be a better bet than a low pass filter https://www.east-uk.com/product/mid-sweep-01/ Quote Link to comment Share on other sites More sharing options...
garfo Posted May 12, 2021 Share Posted May 12, 2021 The NFP, or Double NFP are second order low pass filters with a resonant peak at the cutoff frequency. The potentiometer allows you to travel between , approximately, 150hz and 4khz. The potentiometer is push-push for boosting the cutoff frequency. It's not a mids pot, but you can make it act like one by adjusting the pot. You'll take more advantage of the preamp with a double version that allows you for more variety. 2 1 Quote Link to comment Share on other sites More sharing options...
OJtheD Posted May 29, 2021 Share Posted May 29, 2021 (edited) That JTex is pretty wonderful. I have two and had them installed in my Ibanez Musician, one per pickup. Great sound, and the three position Q boost switch is really nice. These are very similar to the setup in the Alembic Series I. I took them out as I returned the Musician to stock in preparation for sale, and I put one of the distillers into a single pickup fretless bass I have. http://jtex.ca/2021/02/04/distiller/ Edited May 29, 2021 by OJtheD 1 2 Quote Link to comment Share on other sites More sharing options...
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