My first bands practice space had a sunn beta lead. Or if someone sells a new version or if there is a schematic somewhere. Sunn was a brand with a fairly long and interesting history, but today lets focus on the late 70s. Wouldnt the sunn pl20 guitar preamp be a better match. Mar 27, 2012 the sunn concert lead was a kickass little amp particularly since it was ss, but the tube heads like the 1200 and the model t hit the ash heap of history for good reasons with the main reason being that they just could not hang with the marshalls of the day. Hi all, i was working on the power amp board of my sunn beta lead to find out why the 15vdc supply was only reading vdc. Sunn schematics 190l sentura ii sceptre solarus 100s.
When connected in chan nel a, forexample, only channel a. Hey all, does anyone have a schematic for a sunn beta lead head. I see there are footswitches for the sunn beta lead. Wondering whether ic1 might be partially shorted and dragging down the voltage, i pulled it from its socket see attached schematic so i could power on the amp for 2. Looking at the schematic, im only supposed to be seeing 66vac. The only modifications are c8, c140, c141 and c143 values. Beta lead additional power bass occasionally you may find it necessary to use your beta as a power amp. This early version had dual channels with 4 input jacks.
Sunn beta lead beta bass custom case, amp not included up for sale is a custom sunn beta lead beta bass custom case for your beta lead or bass chassis. Wondering whether ic1 might be partially shorted and dragging down the voltage, i pulled it from its socket see attached schematic. Sunn beta bass preamp schematic by morain51 17 apr 2015, 10. The impulses were recorded and edited by the shift line team in st. People say the univox 1501 is a sunn model t clone, but i cant find schematics so i cant confirm for you. I used a sunn beta bass combo back in the late 70searly 80s, and at the time, i liked it a lot. What wiki does not tell you is that conrads solution was basically to add a preamp stage to a dynaco mark 3 home hifi amp and stick it in a big speaker cabinet. Thus, the sunn musical equipment company was founded. Free electronics schematic diagrams downloads, electronics cad software, electronics circuit and wiring diagrams, guitar wiring diagrams, tube amplifier schematics, electronics repair manuals, amplifier layout diagrams,pcb software for making printed circuit boards, amplifier design software cad for drawing circuit diagrams free download. They built an amp for guitars and for bass, and the grill cloth had vertical stripes on it that got wider as you moved left to right.
For greater savings check out our used sunn beta lead 2x12 300w guitar combo amp and get a great deal today. The power amp was a new solid state design and was built into the bottom of the speaker cabinet. Sunn beta bass footswitch discussion in amps and cabs bg started by. One is that the power transformer has 3 taps for seperate voltage windings and 3 rectifiers, where as the red knob series has a pt with a single secondary, and all the lower ps voltages are tapped off from there. Ive built a beta lead aswell, i used the common schematic. Mar 14, 2017 sunn concert lead schematic old version, silverface. The good, is the head works and sounds great, no problems, controls are quite and it functions fine. This is the second instalment in the series of exclusive impulses recorded from lesserknown and somewhat rare cabinets. Sunn coliseum lead amplifier 1975 schematic contents. Sunn plc 3200, wiring schematic diagram fender electronics, sunn on. I think they are the poorest made guitar amps i have ever seen. The most important early beta lead user was undoubtedly buzz osborne of the melvins, whose flagrant abuse of the amp inspired nirvanas kurt cobain, adam jones of tool, the bands sunn o and red fang, and innumerable other modern doom and sludge guitarists to plug into this compact, unassuming head. Sunn beta worshippers unite post your photos, videos, and songs featuring this great amp.
But the level pot is quite scratchy at the beginning of the sweep, like if it passes dc signal kind of a sho behaviour. Your guitar heroes use solidstate amps reverb news. This rackmount preamp from hilbish design is based on the circuitry of sunn beta bass and lead amps. One is that the power transformer has 3 taps for seperate. The who, moody blues, cream, steppenwolf, kiss, rush, queen and a little music festival in upstate new york all endorsed sunn equipment. This later version had a single channel with 2 input jacks.
My first bands practice space had a sunn beta lead 200 head and 610 cabinet sitting in it. The other guitarist in my band has a beta lead combo that is loud as hell and sounds excellent. Prowess amplifiers offers resources for the guitar tube amplifier builder. I replaced the ss rectifier adaptor plug with a gz34 per the schematic as i rather like the effect of a tr. Free sunn diagrams, schematics, service manuals schematics. This site helps you to save the earth from electronic waste. According to the schematics its a 30k s curve 4 pin pot. I am picking up a 1970s sunn concert lead for 150 bucks, does anyone have any experience with these amps.
I found a sunn beta bass head with an old sunn 4x12 bass cabinet at a local guitar shop, and i was quite confused when i found out that they had it marked as a 300 watt head, and when i took a peek at the back of the head it had a rating of 300 watts on it. There were two main amps in the beta series, the beta lead and beta bass. Sunn beta lead pwr amp schematic return to sunn beta lead resources. A reissue was released in 2008 by fender, and is also quite rare.
Turns out one of my links was one space out and i managed to cross things out on my schematics too. In respect to guitar gear, buzzs use of sunn beta lead heads has proven particularly influential. Solid state guitar amp forum diy guitar amplifiers. I dont know much about sunn amps, and the two i have tried over the years were pretty different from each other.
Jul 09, 2017 hi all, i was working on the power amp board of my sunn beta lead to find out why the 15vdc supply was only reading vdc. I have two sunn tube heads solarus and 2000s and two sunn solid state heads well the 1200s is the modern age hybrid w tube preamp and solid state power section. I found only one but its too fuzzy to read some values, so anyone please share if having something clearer. These amps are getting harder to find and are usually pretty well roached when they. They are crazy rare, but thats what they are beta gtr pre, in a 19 rack mount. Does anyone know what would be a compatible or suitable replacement or if someone sells a new version or if there is a schematic somewhere. This version varies from the red knob concert series amps in a few ways. Apr 23, 20 the sunn beta lead is approximately 100w, solid state guitar amp and is used by a fair few doom bands. Sunn diagrams, schematics and service manuals download for free. Its a great time to upgrade your home music studio gear with the largest selection at. Ive been assuming im supposed to see 120vac at the ac side of the rectifier on the sunn because my brain was thinking this was the line, but its not. Formerly poorly regarded by guitarists who were more familiar with sunn s topshelf tube amps, the 100watt, twochannel beta lead has lately become ubiquitous in the rigs of stoner, sludge, and doom bands, and secondhand prices have risen.
We also ran across a sunn enforcer which is a rare ted nugent model. Through a seismic audio 2x12 with celestion g1285 speakers. Sunn guitar and bass amplifier owners manuals fender. Still to this day the sunn beta units are incredible to play through. This offer includes original fender manualdocumentation only no hardware included. Sunn amplifiers owners group public group facebook. If a moderator or administrator have a look on this thread, maybe it could be renamed to sunn beta bass and beta lead preamp schematic. Here is a beta lead version, without reverb section. Sunn 300t reference and owners manual pdf download. My version so i tried to reproduce this killer sound in a box. I am restoring a sunn beta lead amp and i need to replace one of the pots on the reverb channel. Epiphone dot studio with seymour duncan 59 humbuckers.
Another option is a marshall superbass their preamps are near identical, but the sunn. Starting to appreciate sunn amps telecaster guitar forum. The unofficial sunn musical equipment web site feel the sunn. To do that, i basically reproduced the preamp circuit of the sunn. The thing about this amp i didnt like was that it was pretty.
We have a huge schematics inventory, projects section and forum. Sunn amplifier power amp puzzle electronics forum circuits. Page 2 thus, the sunn musical equipment company was born. Sunn amplifier power amp puzzle page 5 electronics forum. Although the lead was marketed to guitar players specifically, the only difference between the lead and bass is the lack of reverb on the beta bass. Skip to main content skip to footer site5112375444 used 112375444 sunn beta lead 2x12 300w guitar combo amp guitar center. Sunn electric guitar and bass amplifiers vintage guitar. Sunn guitar and bass amplifiers amps manufactured by sunn. Sunn guitar and bass amplifier owners manuals sunn 215 bass speaker cabinet. Fister large shirt doom sludge drone metal sleep khanate sunn.
Hey all, ive been looking into getting a footswitch for my sunn beta lead and i have a few options that im exploring. Sunn featured heads, and what they referred to as selfcontained amps, commonly known as combos. Sunn concert lead schematic old version, silverface. As subject says, im looking for schematics of beta lead. The beta bass was the bass amp, while the beta lead was the guitar version not sure about the alphas circuit, though. I see there are footswitches for the sunn beta lead, but i am.
The sunn musical equipment company was formed by conrad and norm sundholm bass player with the kingsmen in 1965, in tualatin, oregon, usa. This basic design would provide the essential platform for all the classic sunn. Sunn coliseum lead amplifier 1970 schematic contents. Shift line beta preamp inspired by sunn beta bass sunn beta lead amps bongzilla gateway red fang wires blind dog coming to skip navigation sign in. In todays gear corner, were going to discuss a unique specimen of solid state amplification. The basic design for crate amps comes from a guy named jerry gold who also designed the sunn beta lead. I have a 72 412s with 2 original transducers plus 2 replacement speakers, not sure if theyre transducers no stickers, and a studio lead with a realistic 15 speaker in place of the 12s or 10s that were originally in it. Sunn did also issued solid state amplifiers that are quite hyped today as well like the sunn beta bass. Doom 2 valve amplifier bass amps guitar pedals vintage guitars loudspeaker guitar amp electric guitars fuzz. Jul 12, 2010 yea, thanks to the doom scene they have gone up. As the years passed, countless pioneers of rock would rely on sunn amplifiers to carry the weight. The sunn orion series was sunns first solid state amp. External speaker outputs on the beta lead allow for easy mixing and matching this is a 1979 sunn beta lead amp head.
The head worked and i remember it sounding exactly like the guitar tones in red fangs song prehistoric dog. Schematics, waveform charts, pc board layout, parts list, semiconductor generic reference numbers. In 1979, after moving all forms of production back to. The sunn orion series was sunn s first solid state amp. Sunn beta lead digital cmos technology made in usa randy holden, ted nugent, buzz osbourne of the melvins used these mondo volume machines.
Service manuals, schematics, eproms for electrical technicians. Sunn amplifiers pete townshends guitar gear whotabs. See more ideas about guitar amp, bass amps and amp. The unofficial sunn musical equipment web site feel the.
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