New Tight Arse design. Please feel free to comment.

Boutique bass guitar effects pedals that require no battery or power supply. Includes multi-channel boosters and drivers in a compact, aluminium casing with D.I. output.
Cave Passive Pedals
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New Tight Arse design. Please feel free to comment.

Post by Cave Passive Pedals » 14 Sep 2016, 12:10

Hi Everyone,

The new TA design is a variable HPF from 20Hz to 81Hz and a variable LPF from 400Hz to 20KHz. The reason for the LPF is to rid your signal of any top end hiss created from multiple effects, boosters, noisy pedals, etc. (If set towards the 400Hz, this can cut into your bass guitar's harmonic frequencies but... noise verses slight tone cut... ???)


The theory behind the new TA:

**The average human hears frequencies ranging from 20Hz to 20KHz, which is why the new TA has a starting frequency of 20Hz and ends with 20KHZ.

**A four string bass, with 24 frets, will have a top frequency (without harmonics) of approximately 400Hz. As mentioned above, this can cut into tone, so you could just take it up a "tad" (technical terms used!!!).

**Making the HPF adjustable to 81Hz caters for guitar (for those of you who play both instruments.) The low E string sits at about 81Hz, hence the HPF stopping at 81Hz.

**By limiting all the unnecessary frequencies entering your speakers will allow for better tonal performance. (By studying your instrument's range and setting the New TA accordingly is recommended.)



The question I have is: Do you guys want to stick to passive and tolerate the very slight volume decrease, or should I design a suitable powered booster?


Thanks
Heath

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vin-tone
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Re: New Tight Arse design. Please feel free to comment.

Post by vin-tone » 14 Sep 2016, 12:14

Whats the input impedance? Having it 1-10meg would make it handy as a DB preamp.
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BigDaddy
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Re: New Tight Arse design. Please feel free to comment.

Post by BigDaddy » 14 Sep 2016, 16:26

Passive is fine Heath. Mine has been sitting at the end of the chain since I got it and I have not had any problem with signal going into the amp.

Out of interest, (this might be a silly question - electronic knowledge, minimal) is there a way of having a noise gate built into the passive circuit? Clearly it would end up in a bigger case if it is possible. That might be attractive to guitarists and their noisy single coil hum.......especially when they leave the wah on with the amp idling at gig volumes :eyebrow:
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Classic5
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Re: New Tight Arse design. Please feel free to comment.

Post by Classic5 » 14 Sep 2016, 21:55

The variable HPF and LPF idea sounds good to me. Definitely makes it a more versatile unit.

oh...and passive is fine by me.
Last edited by Classic5 on 14 Sep 2016, 22:18, edited 2 times in total.
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Phatbass
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Re: New Tight Arse design. Please feel free to comment.

Post by Phatbass » 14 Sep 2016, 22:00

Passive, IMO, would be the way to go.
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cl8n
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Re: New Tight Arse design. Please feel free to comment.

Post by cl8n » 16 Sep 2016, 11:22

The volume loss is not noticeable on my TA (which, like BigDaddy, I have permanently set at the end of my chain), so if the results are the same I say passive all the way.
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Re: New Tight Arse design. Please feel free to comment.

Post by Aussie Mark » 16 Sep 2016, 11:32

I don't notice any volume loss either, with my TA on my board after other effects. Passive good.

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Re: New Tight Arse design. Please feel free to comment.

Post by BassLine » 16 Sep 2016, 11:56

Passive, it's your unique selling feature (plus more reliable as it doesn't need batteries).

I love the adjustable HPF/LPF ideas. Great for these modern cabs containing crossovers for different driver sizes (ie. 12" & 6"). You can fine tune the TA freqs to find your 'sweet spot' for that bass/rig/venue/etc. Combined with an amps EQ section, you can get a lot of great sounds.
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Re: New Tight Arse design. Please feel free to comment.

Post by weemac » 22 Sep 2016, 06:39

All sounds like a good idea. The variable Lpf would also cater to 8 string basses..

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Re: New Tight Arse design. Please feel free to comment.

Post by StinkyPete » 23 Sep 2016, 13:14

Passive.

I'm after one of the new or older versions (if available) to permanently mount on my Fender TB600 head, the only reason I take my pedalboard to a gig with this head is because I have a Thumpinator on the board which is great when using the Aggy TH500 and O/D pedal but I can get by with just the TB600 pedal if I had a passive TA.
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Rocksolid
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Re: New Tight Arse design. Please feel free to comment.

Post by Rocksolid » 23 Sep 2016, 14:11

The variable H + LPF is a great idea. I just got a pedal from a manufacturer in Canada named Broughton that does exactly that. His pedal is not passive, however it does also have a gain stage that can drive a power amp, not something that can be done with a passive unit.

These sound like they would be awesome in the back of your rack patched into the effects loop, or even beaut velcroed to the back of a class D head.
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Re: New Tight Arse design. Please feel free to comment.

Post by BazzBass » 23 Sep 2016, 15:00

Hiya Heath, hope you are well :)

yes to a variable LPF and HPF and yeah keep it passive, that's your differentiation from all the other pedals
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Re: New Tight Arse design. Please feel free to comment.

Post by dubista » 29 Sep 2016, 00:19

I really dig the "old" TA. I haven't noticed any volume drop in my signal but I reckon I'd love a variable hpf/lpf. Another vote for "passive".
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bobbybdazzler
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Re: New Tight Arse design. Please feel free to comment.

Post by bobbybdazzler » 29 Sep 2016, 16:03

There is defiantly a small volume drop with the TA but not enough to be an issue. The variable HP/LP would be a great improvement, are you going to have two pot's and knobs on top or going to use the screwdriver operated trim pot's?
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madidus
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Re: New Tight Arse design. Please feel free to comment.

Post by madidus » 03 Oct 2016, 10:31

I'd be very interested in a passive TA with variable HPF/LPF.

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