ChromeDomeAudio, LLC

11041 Reading Rd. Cincinnati, Ohio 45241 

513-733-3663 



Pick up & drop off hours for the service shop.

Thursday & Friday 1PM- 7PM

Saturday 11AM-6PM

 

   Cincinnati & the Tri-State area's dedicated tube Custom shop.

Chrome Dome builds high end tone machines and services, modifies and upgrades any and all tube guitar amplifiers to better suit your needs.

We don't interpret the rules of Tone, we write them.

If it's a Vacuum Tube amp, Adam White will work on it.

 

ChromeDomeAudio, LLC
11041 Reading Road
Cincinnati, OH 45241

ph: 513-733-3663

info@chromedomeaudio.com

Follow us:Facebook

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  • Blues Junior Deluxe Recordings

Junior Deluxe

 

Listen to recordings of the amp here

 

Order now

 


 


 

 

Our Blues Junior "Deluxe" is an awesome blues and rock amp that will get the job done on stage and in the studio. You can go from Princeton Reverb tone to singing bluesy sustain in one amp and control it with your guitar volume.

It is a 18ish watt, 6V6GT based tone monster, and the results are so good that it's kind of silly!

 

We upgrade the output transformer to a wide bandwidth, high fidelity transformer. Increase the power supply capacitance considerably which along with the new output transformer, helps the amp deliver greatly enhanced bass performance. During the redesign, all plate load, cathode and grid resistors are replaced with good quality carbon composition parts. Bypass caps, coupling caps, tone stack parameters and the phase inverter improvements are all part of the recipe.

Stock Jr's are notorious for oscillation problems in the long tailed pair phase inverter. We rewire the circuit to utilize a cathodyne inverter. This is same circuit you hear in a Princeton Reverb and Deluxe. This offers an entirely different feel to the amplifier. Because of the different approach in Phase inverters, our Deluxe rendition uses 4 amplification stages all properly set up and tweaked for tonal nuances from stage to stage which delivers wonderful responsiveness and tonal versatility in the amp. Shimmering clean tones, warm jazz tones and singing sustain can be rolled in and out of with your guitars volume control.

We maintained the use of the foot switchable "Fat" switch, but the effect is quite different. It is a very usable lead boost. It increases the overall volume of the amp just enough, but takes the drive tone of the amp and just nails it. It adds just the right amount of compression and sustain, but doesn't muddy or drastically change the tone of the amp.

The amp uses 3 12AX7 preamp tubes, but the power amp is converted to the venerable 6V6GT. The new 8 pin ceramic tube sockets are mounted directly to the chassis.

We install a 12 inch 16 ohm American made WGS (warehouse guitar speaker) veteran 30 driver We use 16 ohm loads whenever possible because the damping factor is higher, which simply means that the amplifier has more control over the speakers moving parts which translates into better low end performance.

There is a true external speaker jack installed on the amplifier that disconnects the internal speaker when used.

We utilize a 3 position power switch. OFF/Stand by/Play

The stock reverb performance in improved greatly due to the significant changes made in the beginning of the signal path in the amplifier. The signal driving the reverb is improved and the return signal is improved and as a result the reverb performs to a studio level. We upgrade the tank to a MOD tank and medium decay is stabdard but can install long decay devices as an option.

Making the reverb foot switchable is an option, available for an addition 59.00. This option combines the lead boost and switchable reverb into one, dual button foot switch. With LED indication. 

 

Complete Jr. Deluxe's are available for 1149.00 with a 3 year warranty through ChromeDomeAudio, LLC

Modifying existing Blues Jr's (Customer provided) to our specifications is 599.00, and comes with a 3 year warranty through ChromeDomeAudio, LLC

 

Amp above shown with optional two button LED enabled foot switch for reverb and Lead boost

  • OEM Blues Jr. circuit board
  • Removing the ribbon cables to the EL84 power tubes
  • Ceramic 8 pin octal sockets installed on chassis
  • Our selected output transformer is Ultra-Linear capable
  • Output section of board has been removed to make way for wiring of octal sockets
  • Phase inverter components removed as well as all associated ribbon cables
  • Cathode resistors, bypass caps, plate load resistors. Better parts
  • Power tube wiring and heater wiring, in chassis
  • Power supply and bias supply component changes
  • Another rear shot of the chassis durring reasembly, and a messy bench!
  • Doubled 1st & 2nd PSU stages really helps,  the amp does put out more power now
  • Bare baffle board ready for new grill cloth
  • Baffle out of the cabinet and another productive, I mean messy bench.
  • New WGS Veteran 30 16 ohm driver installed on baffle board
  • Getting it all back together, new output tubes installed
  • All fire up and ready to roar!



3 Position switch. Off/Standby/Play

Amplifier in "Standby" or warm up mode.

Amplifier in operation, or "Play"

 

 

Copyright, ChromeDomeAudio, LLC  All rights reserved. 2007-2015



We accept credit cards in person or over the phone. As well as PayPal.

 

ChromeDomeAudio, LLC
11041 Reading Road
Cincinnati, OH 45241

ph: 513-733-3663

info@chromedomeaudio.com

Follow us:Facebook