2w Sub Miniature Express

[gearhead]

I've been using an Eminence Private Jack in a cab built by Bob Burt. The PJ sensitivity is 101. Good, broad spectrum.

Plan next to drop in an Eminence Wizard. It's more effecient, at 103. A bit more treble, with a tighter bottom.

BTW, the BB cab is one I spec'ed for him to build. It replicates the precise dimensions and ports of a Shiva combo cab.

[Structo]

I've heard a lot of good things about those Burt cabs.

Is your cab a barn pine wood cab?

He built one out of really old barn wood for a friend of mine.
Looks and sounds great!

[gearhead]

It's tolex-covered new pine. Wanted to replicate all the characteristics of the Shiva cab. Was very tempted tho. His work is just outstanding.

[coco]

The clips help & I hear a lot of potential in those clips BTW!!

[gary]

just sorted out some parallel wiring for two newish 16 ohm 12" Greenbacks in epiphone Valve Junior extension cabinets. Not bad at all - an improvement on the V30 in an open backed cab. Impressive amount of bass in this amp! Seems almost ridiculous for its size.

[UR12]

just sorted out some parallel wiring for two newish 16 ohm 12" Greenbacks in epiphone Valve Junior extension cabinets. Not bad at all - an improvement on the V30 in an open backed cab. Impressive amount of bass in this amp! Seems almost ridiculous for its size.

So am I understanding you right? You went from a v30 open back to a couple of closed back 1 x 12s with greenbacks?

[MCK]

just sorted out some parallel wiring for two newish 16 ohm 12" Greenbacks in epiphone Valve Junior extension cabinets. Not bad at all - an improvement on the V30 in an open backed cab. Impressive amount of bass in this amp! Seems almost ridiculous for its size.

I have a Marshall 1936V which has 2 x 12 V30s and think it sounds great with my Lil Devil. I also played it through a 1x10 Celestion V10-40 Silver Series mounted in a Little Lanilei closed back cab by Songworks. Sounds weak but better for late night practice with lower volume.

[gary]

just sorted out some parallel wiring for two newish 16 ohm 12" Greenbacks in epiphone Valve Junior extension cabinets. Not bad at all - an improvement on the V30 in an open backed cab. Impressive amount of bass in this amp! Seems almost ridiculous for its size.

So am I understanding you right? You went from a v30 open back to a couple of closed back 1 x 12s with greenbacks?

The epiphone 1x12 cabs have a 6" square cut-out on the back panel, so they're not fully closed. I just spliced a couple of home-made speaker cables together to parallel the two 16 ohm cabs.

[MCK]

Is it possible to mod this amplifier somehow so it can also accept 16Ohm speakers?

[UR12]

Is it possible to mod this amplifier somehow so it can also accept 16Ohm speakers?

Not without changing the OT. You can safely run a 16 ohm speaker on the amp. 4 ohm might be a bit much but 16 ohm should work without damaging the amp.

[MCK]

Super! Thanks for letting me know. My V30's measure about 14Ohms on my Fluke anyways so closer to 8 than 16.

[UR12]

Super! Thanks for letting me know. My V30's measure about 14Ohms on my Fluke anyways so closer to 8 than 16.

You are measuring DC resistance of the speaker coil when you measure it with an ohm meter. That will be a little bit different than the AC impedance of the speaker. For example, a speaker with a 4 ohm impedance will usually measure about 3.2 ohms resistance. A 8 ohm speaker will measure about 6 ohms resistance and a 16 ohm , as you found out will measure about 14 ohms.

[MCK]

Great to know my V30's are regulation 16Ohms then! I'm educated once again. Thanks much! You should have charged me extra for all the knowledge!

[dayn]

Does the kit or production amp come in a combo version, where the chassis would be flipped around with the tubes and iron hanging from the bottom?

[UR12]

Does the kit or production amp come in a combo version, where the chassis would be flipped around with the tubes and iron hanging from the bottom?

No, I had plans for a combo version but after trying a couple of prototypes I decided to do a 1x 12 cab and the head. I had the chassis mounted like the old Fender tweed amps (verticle) with the controls on the top back of the cab.