SML Tech
Northern VA, Washington D.C. area musical equipment repair and modification. Specializing in tube amplifiers.

Blues Jrs, Vintage Marshall, G-DEC

Background & experience

Services

Custom Build Samples

Favorite Links

Contact info:

Pete (703)615-8445 e-mail


5W Custom built Single Ended amp using EL84 and high efficiency 10" Alessandro speaker. Only 11"x11"x8" & about 12lbs! I can sell these amps for about $650
uAmp Front uAmp Back uAmp Chassis
Front Back Chassis


10W Custom built Single Ended amp using EL34 and high efficiency 12" Lil' Texas speaker. This amp kicks and is now my main gigging amp! I can sell these amps for about $950
SE 15 Front SE 15 Back SE 15 Chassis
Front Back Chassis


Build based on Blackface Deluxe kit. I can sell these type amps for $1100
Blackface Deluxe from kit Blackface Deluxe from kit Blackface Deluxe from kit


Franken Amp. Built from scratch and spares. Circuit is similar to Tweed Deluxe. I can sell Tweed Deluxe amps for $1000
Franken Amp Franken Amp Franken Amp


Marshall 18W Clone. Built from a kit. I can sell these amps for $1000
Marshall 18 clone from kit Marshall 18 clone from kit Marshall 18 clone from kit


Background & experience:

I've been working on tube amps every since I modified my first Heathkit "Hi-Fi" for guitar use in 1968. I've was an electronics design engineer by profession for 30+ years and have countless hours of experience on everything from vintage tube amps to modern high density printed circuits. I have a well equiped shop with all the tools and instruments required to trouble-shoot and test most audio equipment. Lab Bench

Back to Top

Services:

- Amplifier Maintenance & Repair

I specialize in tube amplifiers but do solid-state as well as. Note: class D devices (& other switching technology) are often not cost effective to repair.

Re-tube & re-cap are common services I can do with very rapid turn around.

Many common tube failures can be addressed within 24hrs.

- Amplifier Modification

Modifications are most common on tube amplifiers. Typical mods include master volume, triode modifications, and tone stack mods. Contact me for consultation and a quote.

- Custom Builds

I have built several amps from kits and from scratch. I will build to spec from kits or from scratch. Contact me for a quote. My lastest projects are amplifiers of my own design (see photos).

The 5W amp is a Single Ended, true Class A (many thought to be class A are really cathode biased AB amps) using a 12AX7 and an EL84.

It is just barely loud enough for small gigs and is excellent for practice and recording. Both tubes operate in cathode biased Class A,

so they can be changed without bias adjustments and there is no need for tube matching.

The speaker is an Eminence 10" Alessandro.

Weight is about 12lbs and it measurements are 11"W x 11"H x 8"D.

The 10W amp is a Single Ended, true Class A using a 12AX7 and an EL34.

It is surprizingly loud and has become my "go-to" amp for small gigs. There are only two tubes in this amp, both operating in cathode biased Class A,

so they can be changed without bias adjustments and there is no need for tube matching.

The speaker is an Eminence 12" Lil' Texas.

Weight is about 26lbs and it measurements are 15.75"W x 16.5"H x 9.5"D.

I built these amps because I wanted really simple, small, old-school amps that I can gig with.

Class A tone is great but the common Class A amps out there (e.g. Fender(TM) Champs and tweed Princetons - intended for practice

and beginners) are underpowered and have small speakers that just don't make them gig-worthy to me.

Check out my Facebook page for more pics throughout build (https://www.facebook.com/smltechva/)

Build samples:

5W Custom

10W Custom

Blackface Deluxe Clone

Tweed Deluxe Clone

18W Marshall Clone

- Speaker Repair

In many cases it is not cost effective to rebuild speakers. However, for high-end and vintage models it often is. I can rebuild many JBL, Jensen, Celestion, and Eminence (as well as many other less common) speakers. Contact me for a quote.

- Effects Repair

In many cases it is not cost effective to repair effects. However, for high-end and simple failures it can be. Contact me to discuss failure symptoms.

- Guitar Setup

I am trained and experienced in guitar setup. I do truss-rod, action, intonation, and pickup adjustment as well fret leveling and dressing when needed.

- Equipment Consultation

I offer consultation on amplifier mods (free if mods are done), equipment purchase recommendations (instrument amplification, Public Address, recording, and acoustics). Fees are negotiated when the scope of work is determined. Contact me for a quote.

Back to Top


Links:

Viking Amps: Eric Summer builds great sounding amps. These aren't just 'knock-offs', they're thoughtfully designed using modern high quality parts.

BANG! Music Support this owner operated music store in Stafford, VA.

BillM mods: This great source for cool mods and kits for (mostly) Fender amps - especially the Blues Jr.

WEBER: Weber speakers, amp kits, and parts.

MOJOTONE: MOJOTONE amp kits, and parts.

Mister Smith: This is my site for musical endeavors.

Back to Top

Visit Counter:

Live Stats For Website