They're probably 25k and 250k, these are typical values for guitar stuff
IMO it's more common to read a bit lower rather than a bit higher. On new pots at least.
I should clarify - the cab and chassis is princeton.. but the circuit is marshall JCM800 front end but instead of the power section being 12ax7->el34 pentodes (55W) it will be 12at7->ef80 pentodes (2W) so not the fender sound. Also i will be fitting provision for a fender 6G15 circuit in it for reverbThat is a very dangerous shop!
In other news, I’ve been planning the combo amp which is loosely based on a princeton reverb but the internal volume has been resized to cope with a 12” speaker.
Current dimensions will be (approx): 27”W 18.8”H 10”D which gives a good 26”x16”x9.88” volume for the alnico to breath. The cab will be an open back (partially closed but more than enough to not act like a rear port).
I’m going to use a pre-made princeton reverb chassis case with wood to pad out the difference.
I think this is realistically the smallest a 12” alnico could fit without being too boxed in. The dimensions are golden ratio, and I will mount the speaker slightly off centre to continue avoiding standing waves (probably by 3.6x2.2cm from the the centre point towards the bottom right corner).
The cab will also give space for a reverb or a SS class A amp at a later date (or replacing the power section to use big tubes
for that distortion with reverb sound 
\m/ (given this will not be loud enough to reverb large rooms).
Oooh the race is on! I shelved my JCM800 Micro project over a year ago now, but once the house move is finished...I should clarify - the cab and chassis is princeton.. but the circuit is marshall JCM800 front end but instead of the power section being 12ax7->el34 pentodes (55W) it will be 12at7->ef80 pentodes (2W) so not the fender sound. Also i will be fitting provision for a fender 6G15 circuit in it for reverb
)
so I think this may end up full on MF low noise marshall :/
That does ring a bell! I sourced all the parts when I planned out my circuit, and used carbon comp for the input/preamp bits. Think I literally had to order 1s and 2s of the values I needed.I feel dirty.
Just been looking at carbon comp resistors. @LuckyBenski if you want carbon comp resistors for the authentic noisy marshall sound then you’d better get your skates on. It seems mouser’s stock is “verify status with factory” or “end of life”. I knew allen bradley resistors were NOS and no new production but it seems the larger companies are ending stock.. so that means gambling HV resistors on ebay..
Digikey = larger stock but that is not being restocked.
Farnell = limited (only 3 in stock I need at 350V)!
Mouser = nope.
So it looks like it’s metal foil for me.. and put a couple of noisy carbon vomp/carbon film in the vital spots.
I’m torn with the neck pickup - simply forgoing the humbucking and just going for a higher output single coil.
(I’m tempted to make a repair time capsule of replacement AB with a desiccating sachet to make a moisture low pod). Perhaps a cigar metal container with a seal). That way in 15 years time it’s got some legs. Perhaps larger and add a set of replacement tubes too.. just in case people have been predicting the death of tube amps for decades now. They'll still be with us.It’s really irratating - all the speakers I like are 100dB/watt. So that efficiency = blinking loud (so 2W would be 103dB) at approx 8V. 85dB would be about 1Vrms (1.414Vpeak).
To get preamp distortion is easy, to get power amp distortion, that’s going to need the amp running at higher volume. I can’t put a 16R resistor in parallel with a 16R speaker as this will have an unknown frequency response (the resistor will have varying impedance over frequency so that will change the impedance of the speaker.. which then affects the speaker frequency response).
The celestion G12H greenback 75hz resonance has an open tone, same with the blue and cream alnicos (all three are 100dB) but everything else seems to push mids or lead highs but then clamp the highest frequencies that make it sound open.
I know that carbon comp resistors absorb moisture over time - the seal for them is super important. The square edge types aren’t as reliable over time as the rounded edge allen bradley. However you’re then faced with the choice of NOS allen bradley (old hence already part way through it’a life time) vs newer end-of-stock which are unproven. I may as well get some allen bradley then
I think everything over the next 10-15 years will become online - so the days of amps other than the digital amp driving the output of the modelling amps & mixing setup will cause tube amps to disappear.
one of her videos came up on my recommended on Youtube the other day, it's title was 'NEW CHAPTER of my life' - I was just thinking you're only like 8!
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This bass intrigues me. Called a child's bass, with a 25.5" scale length that makes it equivalent to my electric. Does that make it a good option for jumping between instruments or is the point of bass to have that long scale lenth (and less span/finger reach) to make you walk up the board than try to do anything too fancy?one of her videos came up on my recommended on Youtube the other day, it's title was 'NEW CHAPTER of my life' - I was just thinking you're only like 8!
NEW CHAPTER Of My Life
Official Merch Store: https://ellenplaysbass.myshopify.comSupport us on Patreon:https://www.patreon.com/EllenPlaysBassPerformance Song by Yousician:Music by ...
The adult version is probably marketed as a 'travel bass'.
but doesn't the string gauge compensate? You just use heavier strings - it's still using bass strings.
Could work, but tends not to be the case. You'd need the B from a 5 string set for the E, etc. So it'd be much heavier strings.
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